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[Q] How can you make the battery last longer??

Is there a tweak out there that stops the stupid battery from guzzling? Im tired of charing it constantly and I swear it takes hours and hours to charge it back to full power. The thing cant last longer than a day without loosing power I cant stand it. Whats making it use all that power? I thought maybe if I switch wireless it would help but I didnt notice a difference.

I can get 2 days out of my battery.
I let it drain to 1% and then stick it on charge over night. When i get up the battery will be at 100% and then 30 minutes later down to 90% but it settles down after that.
I do not have wifi and bluetooth on all the time, just when I need to.

sORRY DOUBLE POST................

Archangel22 said:
Is there a tweak out there that stops the stupid battery from guzzling? Iam tired of charging it constantly and I swear it takes hours and hours to charge it back to full power. The thing cant last longer than a day without loosing power I cant stand it. Whats making it use all that power? I thought maybe if I switch wireless it would help but I didnt notice a difference.
Click to expand...
Click to collapse
I don't understand people telling battery lost for 2 days..... even if we keep phone idle it will lose power in 24 hrs i believe....try like this try to use ROM with out manila & with manila once you will know the difference other than that there is some tips to save battery in Energy ROM thread in 3 rd 0r 4th post ..

4 days normal usage.
Manila2, GSM
15 minutes call, 6~10 text message, sync exchange, 30 minute ebook reading per day

If I build rom myself from the kitchen. It usually runs for 2-3 days.
However, in most cases when I try decent cooked ROM, for example, Energy - battery drains in about 5 hours. That's been the case with other cooked roms as well.
I suspect that some popular configuration change done by cooks causes battery to drain in certain environments. Would be nice to find out which change is that.

Processes and services often place a strain on the life of the battery; add to the mix a buggy service or application that further shortens battery life and one has an unusable device.
Another habit that can shorten Li-ON battery life is full discharges - near 0%. One of the members put out a thread a while back on research he/she had done on batteries - worth the read if you haven't already.
Cheers,

alexnoalex said:
If I build rom myself from the kitchen. It usually runs for 2-3 days.
However, in most cases when I try decent cooked ROM, for example, Energy - battery drains in about 5 hours. That's been the case with other cooked roms as well.
I suspect that some popular configuration change done by cooks causes battery to drain in certain environments. Would be nice to find out which change is that.
Click to expand...
Click to collapse
I just had the same experience, cooked for the first time and my battery was better than it has ever been!
Since then I have flashed to RRE 21731 6.3 and it seems my battery has stayed the same (Brilliant, 2 Days no problem).
The only thing ive done differently is I have used the new UK Voda rom as my Stock Rom that i flash before flashing custom, and i believe this may have something to do with it...What, I don't Know.
I also believe changing the Radio After a flash can affect battery life, I always try to flash a new radio before a Custom rom.
I have wondered for some time wether the European Touch Pro is slightly different to the US Fuze in its hardware, Since most Cooked Roms are configured for the Fuze maybe that is what it is?
maybe we will find out..One Day

turn off 3G and you will get much better battery.

Get a Blackberry Bold. My phone has been on for 2 days, sent around 150 texts, got in 150, I'm at 85%

ukjock said:
I can get 2 days out of my battery.
I let it drain to 1% and then stick it on charge over night. When i get up the battery will be at 100% and then 30 minutes later down to 90% but it settles down after that.
I do not have wifi and bluetooth on all the time, just when I need to.
Click to expand...
Click to collapse
That will ****-up your battery, you should never let it drain to 1%, just charge it when you have the time, preferably before it drains to about 20%.

I guess it all depends on the eye of the beholder, I come from the Diamond part of XDA, and we are lucky to get 24 hours on the Diam.
I was happpyyyyy with my new TP battery life -compared to Diam that is-
But ya, turning of 3g and being picky about processes and back light helps.
Greets to all.

Search the development and Hacking thread for Windows Long Life/save your gonads. Chainfire is developing a neat application to automatically switch from 3G when not needed. I tried an early version and it seemed to significantly increase my battery life.

Check my sig....it tells you how to deal with Li-ion batteries...

battery stuff on my site
Check out chapter 17. I cover this pretty thoroughly.

Archangel22 said:
Is there a tweak out there that stops the stupid battery from guzzling? Im tired of charing it constantly and I swear it takes hours and hours to charge it back to full power. The thing cant last longer than a day without loosing power I cant stand it. Whats making it use all that power? I thought maybe if I switch wireless it would help but I didnt notice a difference.
Click to expand...
Click to collapse
An app that may help is Advanced Task manager, it has a widget to end all running processes/tasks which i tap before putting mine to sleep about 1000+ times a day it seems. go in and exclude ones you may want to exclude always and then its as simple as 1 click. as everyone else said, no gps,wifi,3g when not 100% necessary. also, get widget "toggle disply" from rounded labs and keep your screen completely dim (not like you can't see it...), being able to make it bright when you step outdoors. Also, toggle backlight app for root users keeps the pesky keyboard backlight off when you don't want it on (suggest making keyboard shortcut for quick toggle). last but not least because i'm sure theres plenty more, but yesterday i switched to cyanogen's newest stable ROM and it seems to be much more effective than any other i have tried in the means of saving battery life. had wifi on after a 98% charge for about an hour and a half (30mn usage) and it only went down to 91%... wow. "and that's all, i have to say, about tha-aat"- Forrest Gump

Firstly I don't think this is the right sub-forum for this question since it's not a specific ROM question.
Secondly, try nueDynamicClock, if you use the right settings, you'll extend your batt life by at least 1/2 a day if not more.

alexnoalex said:
If I build rom myself from the kitchen. It usually runs for 2-3 days.
However, in most cases when I try decent cooked ROM, for example, Energy - battery drains in about 5 hours. That's been the case with other cooked roms as well.
I suspect that some popular configuration change done by cooks causes battery to drain in certain environments. Would be nice to find out which change is that.
Click to expand...
Click to collapse
It's really very simple. Flash an awesome rom, and the battery burns and burns. Flash a rom you hate, and the battery lasts forever. Don't over-think it.

hi guys.
i was eager to start up this discussion and am glad to find it here itself.
even am really finiky about battery.
tried alot of thing but cudnt find any spcl tweaks.
though i came across some registries from advanced config and other wise also but they seem to be more worse.
;IMPROVE BATTERY PERFORMANCE
[HKEY_LOCAL_MACHINE\Comm\AsyncMac1\Parms]
“DisablePowerManagement”=dword:0
[HKEY_LOCAL_MACHINE\Comm\Irsir1\Parms]
“DisablePowerManagement”=dword:0
[HKEY_LOCAL_MACHINE\Comm\PPTP1\Parms]
“DisablePowerManagement”=dword:0
[HKEY_LOCAL_MACHINE\Comm\L2TP1\Parms]
“DisablePowerManagement”=dword:0
when i use these tweaks the power consumption of my rom reached to 4.112 volts(as per power detect) which otherwise without these tweaks is 3.992 at startup.
more power consumption i guess means less battery i guess.
and even if its not still these tweaks as per my usage show bad results.
why so?
and arnt there spcl application which can detect the packages which might consume more battery, as i have over 50 packages in my rom and it'll hell to check which eats more.

Some tweaks I do
I have also found for me that disabling these things in advanced config also helps.
Performances
> File System cache: Disabled
> File System filter cache: Disabled
> Glyph Cache: 32kb (advised) I'm not sure if disabling this one is a good idea. I like having a little bit of glyph cache on my device.
Light senor
> Light sensor polling: Disabled.
*Note: If you want to still have light sensor on (this means the auto backlight feature) I would set the:
> Light sensor polling interval: 2000. This will make it poll every 2 seconds instead of every .2 seconds. I would even try setting it to 5000.
The backlight will make a huge difference on how long you battery will last. The brighter it is the more the battery needs to light up that screen. If you turn off the polling all together it will make the battery last longer.
Also running fancy UI apps will also deplete the battery more. Just common sense really as another poster alluded to earlier. The more things you have running and sucking up memory the more battery it will consume. If you disable TF3D or other apps such as this you will get your battery to last longer. Given that these devices are meant to have these types of programs on them you will have to weigh the options of how much you really want to "tone down" your devices to get the most out of your battery.
Also different radios will cause you battery to last longer. I suggest to everybody that they try different radios to see which ones last longer. Also people who live on the edge of 3G and EDGE area will cause the battery to drain faster as it constantly switches in and out of 3G coverage.
WMLongLife is a great app if you don't need 3G while you phone is just sitting in you pocket. It works great for me and when I want to use 3G I simply launch opera and the program will automatically enable 3G once again.
There are many things that you can do to improve your battery life. I encourage everybody to find what is best for them given what they use there device for and try and test things out. The best way to tell which works best for you is to simply try it out for yourself.
**NOTE** I also set all ROMs that I flash with a page pool of 0. I don't know if this has any real effect on battery life but it does seem to make my battery last a little bit longer. Not sure if this is a placebo affect though.

[howto] improve battery life on Thunderbolt (revision 1: 4/2/11)

EDIT: thanks everyone for the input! Here's the revised guide:
Ladies and Gentlemen,
The purpose of this how to is to help you, whether new or experienced, to achieve the best battery-life results possible.
This is not:
a magical solution doubling or tripling battery life
a collection of zip files to flash, offering dubious promises
anything of my own making. If I quote anybody and forget to give credit pls pm or comment.
What this is:
Tried and tested methods to *slightly increase* your battery life
An open forum, if I miss anything don't hesitate to comment
I'm organising this post as follows:
Basic: Stuff you probably all know, but here for newbies' sake
Intermediate: More effort involved
Hacks: Root required
[Basic]
1) Turn off wifi, bluetooth, and GPS when not in use. HTC and Google both provide handy widgets to toggle these on and off.
EDITED:
2) Don't use automatic brightness. Use a widget to ramp it up only when needed. Automatic brightness may ramp it too high, and engages an additional sensor so It might actually decrease battery life. ( Thanks droid fetish and magneticzero )
3) Set brightness as low as possible when you can. There's an app called "dimmer" on the market that will set it lower than standard widgets. Use this when you're in the dark.
[Intermediate]
1)Update: The following may or may not help, I am doing some tests to try and get a solid answer: Turn off 4G when not needed, especially if you're in a 3G only area.
to do this dial *#*#4636#*#* then change "CDMA + LTE/EvDo auto" to "CDMA auto (PRL)"
Change it back when needed.
*** I don't remember where I first read how to do this, so if you discovered this please let me know so I can give credit.
You can also get an app from the market by the great folks at TeamAndIRC called "LTE OnOFF" at the moment it's just a shortcut to the *#*#4636#*#* menu, but they're working on improving it.
If you're rooted, you can flash "advanced Radio Tools In Settings" by jcase *thanks for the great tool* that will add this menu into your network settings. (its in rom manager under jcase)
Find the original thread here: http://forum.xda-developers.com/showthread.php?t=1018159
2) Bump Charge. As explained in detail here: http://forum.xda-developers.com/showthread.php?t=871051 (great post byrong!)
follow the instructions here: http://forum.xda-developers.com/showthread.php?t=1016508 (thanks psufan!)
3) Currently there is a bug with certain towers that really drain your battery. Until they get it fixed there's a solution in post 12 of this thread. here: http://forum.xda-developers.com/showpost.php?p=12597290&postcount=12 (thanks Zshazz!)
[Hacks]
1) Remove Bloat.
IF you are rooted, you can use titanium backup to "freeze" (restores on hard reset) or delete apps out of the stock rom. Blockbuster is really bad, as are many of the others.
A good way to do this is to just flash a rom with the bloat removed. They are many, find them in the development section.
I use Das BAMF by adrynalyne here: http://forum.xda-developers.com/showthread.php?t=1009876
2) Undervolted Kernel. Flash a new kernel, a good one comes with Das BAMF, for other roms, you can flash adrynalyne's in MrBobrowitz's section in rom manager.
For an interesting read: here's an excellent post by byrong about the effects of cpu and brightness on battery:
http://forum.xda-developers.com/showthread.php?t=979359
Go ahead and read that, then give him a "thanks" for all the hard work.
Thanks for reading!
This is a working list, so please comment anything that should be added!
Regards,
-Jesse

Reserved
Currently running the following tests:
a) run pandora after fresh charge/boot on both 3G only and 3G/4G with screen and volume off. Report ma usage and battery level every half hour.
b) run phone in standby on both 3G only and 3G/4G with screen and volume off. Report ma usage and battery level every half hour.
(calls will be forwarded)
This is no objective, and I see the following 2 flaws:
a) pandora may not have a consistent data usage amount
b) my signal may very for 3G and 4G.
If you can think of a way around this let me know.

Thank you for not putting ATM in here. I would've reported you... fo realz

Hahahahaaa lol! I'd sooner shoot myself. I sell phones for a living, and it took so long to convince my peers about atm its turned me into an anti-atm/atk zealot

Is there still any debate on whether or not turning off 4G has a significant improvement on your battery life? I remember reading a while back (2 weeks ago) that it didn't matter, so I never put any effort into disabling it. But being in a non-4G area I'm sure it doesn't matter.
Just curious what other people have seen/heard.

I will try and do some tests tomorrow... if anyone has evidence pls let us know.
Until then, goodnight
Edit: thinking about it: it might not matter. The rumor probably came from the ego 4G, because wimax behaves like wifi (to my understanding) and is therefore a battery drain. That being said, LTE does not behave that way....
So there are 2 questions in need of answering:
1 does the phone 'search' for LTE in 3G only areas, thus wasting battery
2 does turning it off in a 4G area save battery?
I can tackle the second since im in a 4G area. If anyone wants to test the first, be my guest.

use a brightness wiget and keep screen down until you need it.

Auto brightness is a battery killer...set your screen and forget it

I don't think turning off 4G saves battery, I have tried it both ways at work in a heavily blanketed 4G area, and I can't see any difference. I have also looked at the battery history with phone in idle, and drain seems to stay consistent at about 35-45 mah. So I think it only "searches" for signal maybe if you are in a non 4G area. I never not in 4G, so this I can't answer.

magneticzero said:
Auto brightness is a battery killer...set your screen and forget it
Click to expand...
Click to collapse
I agree. I would assume it takes more functions to determine automatic brightness then it does to have a set level.

I can't do that, as I am in and out all day. I wish we had some user customizable screen auto brightness settings like luminosity on winmo. That is literally the only thing I miss from winmo. Basically it allows you to set the minimum bightness that you can stand for all different outdoor lighting conditions. Instead of having the standard that goog or HTC sets. (not sure who sets it)

The biggest battery saver might only be able to be done via the user. Maybe if you have Tasker you can set it up, but here it goes:
Some areas/towers cause your radio to drain enormous amounts of power (and it doesn't show up in your Battery Use menu). For the people getting 6h of battery life, I'm looking at you. Download CurrentWidget and find out where these places are. When you discover the areas this happens, make sure your Mobile Data is turned OFF while you're in those areas. You may also use wifi if available. This stops the "bug" from draining your battery.
Normal areas (such as the area around my house) draws 40-80 mA with my screen off according to CurrentWidget. These bugged areas (like certain areas in town, for me) will cause your phone to draw 700mA minimum ... and when I looked through my current widget logs, 900mA has seemed to be the norm. As you can imagine, your battery wouldn't survive very long at all with that kind of drain.
After paying attention to where this bug happens, I've managed to extend my battery life to taking 20% (as in, my battery widget showed 80%) of my battery in 13 hours and 30 minutes. That is a 4x improvement over my old battery life. With careful use like this, you could see 2 days of light-medium usage very easily.
I'm not saying this is normal or that you should be expected to do this... I'm saying HTC/Verizon has a bug they need to fix ASAP, and this is just a stopgap until they fix it.

Zshazz said:
When you discover the areas this happens, make sure your Mobile Data is turned OFF while you're in those areas. You may also use wifi if available. This stops the "bug" from draining your battery.
Click to expand...
Click to collapse
Wow, so just for giggles I installed that widget to see what I was getting at my desk, and it was running around 380-410mA, turned on the wifi (which also disables mobile data) and I'm down to 150-160mA immediately.
I'm going to enable logging and keep an eye on this now. Thanks for the info!

seandalton0 said:
Wow, so just for giggles I installed that widget to see what I was getting at my desk, and it was running around 380-410mA, turned on the wifi (which also disables mobile data) and I'm down to 150-160mA immediately.
I'm going to enable logging and keep an eye on this now. Thanks for the info!
Click to expand...
Click to collapse
of course wifi uses less power, but dont tell anyone the secret to longer life /holygrail

magneticzero said:
of course wifi uses less power, but dont tell anyone the secret to longer life /holygrail
Click to expand...
Click to collapse
My understanding of layer 1 technologies is pretty limited, so this is good news for me

seandalton0 said:
My understanding of layer 1 technologies is pretty limited, so this is good news for me
Click to expand...
Click to collapse
-1 for reminding me of freshman year, +2 for being clever.

Updated the op. Running tests on 4G to Make sure my info is accurate.

I can't even take it off WiFi at home even though I am in a 4g area ( according to Vz's map). 4g drops constantly. Sucks.
Sent from my ADR6400L using XDA App

Since you included some hacks into the mix (kernel/rom), you might want to make mention of both some standard SetCPU profiles, and the smartass governor.
Thanks for the continued effort.

seandalton0 said:
Wow, so just for giggles I installed that widget to see what I was getting at my desk, and it was running around 380-410mA, turned on the wifi (which also disables mobile data) and I'm down to 150-160mA immediately.
I'm going to enable logging and keep an eye on this now. Thanks for the info!
Click to expand...
Click to collapse
Ok. Here is where I have a problem. Everybody knows this right? Well, I thought I was having problems with my wifi. It drained my battery down to zero every night no matter what the battery was. With my Dinc I ran wifi (Y5 - so it was automatic as soon as I walked in the door) and the battery life at home was GREAT. Well, not so with my TB. I did notice however that I am on the fringe of 4G/3G as I am on the outskirts of Cincinnati. When I was on data it would bounce back and forth between 4G/3G. So, what I've tried is using the LTE on/off widget I turn it to 3G only when I get home and voila! my battery life is supurb with only about a 5% drop overnight max. This is while I'm on wifi. Why in the world should I have to regulate the data type while I'm on wifi?

battery drain fix - alternate method!

This is a sister-thread to "Battery Drain Fix" for the g2x that lists a factory reset as a possible fix to battery drain issues.
First, let me say that even if you do not currently have battery drain issues with your G2X, that doesn't mean that you're immune. My battery has been phenomenal at times, abysmal at others. I've done the factory reset and that DID help for awhile, but battery problems arose again.
I believe the problem that plagued my phone was the dreaded 50% cell standby problem. If you're unaware of this problem, essentially the issue is that "cell standby" (found under settings --> about phone --> battery use) is at or around 50% always -- in other words, it doesn't matter that the phone has fine reception, is or is not being used, or even has the signal active (that's right, the problem persists even with airplane mode activated).
While I do recommend the factory reset method (assuming that you haven't had your phone too long, as it can be a real pain to reconfigure everything if you've set it up how you like it over many weeks...), I think this alternate method is something we should all do as well. In brief, you'll want to do the following:
-open dial pad and dial *#*#4636#*#* (If Testing menu doesn't come up than click "Call" and it will come up)
-Go to Phone information
-Scroll down and you'll see preferred network type
-click it and switch it to GSM/WCDMA auto
-click back button
After taking these steps, you should see an immediate improvement to your battery drain problems, as well as much faster battery charge times. Additionally, your cell standby % should decrease dramatically.

Isn't the same effect achievable from the Network Settings? No need to go to the secret menu. Unless I'm missing something.

electric33l said:
Isn't the same effect achievable from the Network Settings? No need to go to the secret menu. Unless I'm missing something.
Click to expand...
Click to collapse
I thought the samw but in the hidden menu it is set to wcdma preferred
switched will report tomorrow
thanx for this. hope it works
sent from my G2X with no regrets

I just changed it, hopefully it works. If it does work, thanks in advance
Sent from my LG-P999 using Tapatalk

Interesting. I've had mine set to 2G networks only, so I hadn't noticed. I'll switch it over as well, and see what happens. I've been getting great battery life though, so this is purely an exercise in curiosity. Regardless, the root cause of this problem has already been determined- the drivers are ****ty. CyanogenMod is liable to fix this up immensely.

I changed mine too and I will report back if I notice any improvements
Sent from my T-Mobile G2x using XDA App

The battery reporting is terrible so cell standby could be nothing really.

I believe doing this also fixes the GsmTracker poll failure in one of the threads. At least mine is no longer red but green (in the logs)

I can personally attest to the fact that this does absolutely nothing different. I have had my phone switched between WCDMA, GSM and WCDMA/GSM auto just to see if there was any difference for the past few days. My device has battery life worse than the HTC Thunderbolt that I returned, and being only 7 days in I'm thinking about doing the same to this device. I'm definitely experiencing buyers remorse.

@TheMightiest -- did you do a factory reset first and then try this method?

Erislover said:
@TheMightiest -- did you do a factory reset first and then try this method?
Click to expand...
Click to collapse
I've factory reset my device 5 times, just drained it, for the 5th time and recharging it as we speak. I still lose between 15-30% per hour if data is enabled...just like the HTC Thunderbolt. At least I got 19mb download with the Thunderbolt, I'm getting an average of 6mb with the G2x, which ain't bad, i'm just saying.

Mine was set on gsm only. I've just made the switch so i'll report back if there is a difference or not.

I've read a lot on the whole philosophy of "drain completely and recharge fully to maximize battery life," and from the looks of it, that method doesn't do anything for Lithium-Ion batteries, which have no memory effect (http://en.wikipedia.org/wiki/Lithium-ion_battery - not that wikipedia is the ultimate authority on things, but hey, it's a link at least).
Your battery sounds WAY worse than others' batteries...you should seriously consider returning it and getting a new one.

Well, my cell standby percentage has not gone down at all, but still my battery consumption is much improved.
As was stated in this thread, the battery readings may be very off the mark from actual battery life, however, that fact doesn't help explain why some of us only were getting 5-6 hours of battery life with moderate (and sometimes no) use. There obviously is a problem, and CM7 may well fix it, but the method in this thread has definitely helped my phone stay on longer...irrespective of battery readings.

Erislover said:
I've read a lot on the whole philosophy of "drain completely and recharge fully to maximize battery life," and from the looks of it, that method doesn't do anything for Lithium-Ion batteries, which have no memory effect (http://en.wikipedia.org/wiki/Lithium-ion_battery - not that wikipedia is the ultimate authority on things, but hey, it's a link at least).
Your battery sounds WAY worse than others' batteries...you should seriously consider returning it and getting a new one.
Click to expand...
Click to collapse
This is not the reason people on these forums recommend draining completely and charging fully. The reason is that in order for your phone to get a semi-accurate idea of what percentage the remaining battery life is at. With this particular phone, however this is probably still a lost cause as the driver will never give an accurate approximation of remaining life.
At any rate, the full drain, full charge is a one time thing. This will also in no way extend battery life (but I haven't seen anyone on the forums claim this either). You can, however, extend battery life by keeping the charge at ~80% and keeping it as cool as possible.
On a side note, great to see yet ANOTHER battery thread

MWBehr said:
This is not the reason people on these forums recommend draining completely and charging fully. The reason is that in order for your phone to get a semi-accurate idea of what percentage the remaining battery life is at. With this particular phone, however this is probably still a lost cause as the driver will never give an accurate approximation of remaining life.
At any rate, the full drain, full charge is a one time thing. This will also in no way extend battery life (but I haven't seen anyone on the forums claim this either). You can, however, extend battery life by keeping the charge at ~80% and keeping it as cool as possible.
On a side note, great to see yet ANOTHER battery thread
Click to expand...
Click to collapse
It's amazing right - we have dual core 1Ghz processors in our smartphones with 1GB of RAM and high res screens, 4G data, etc. etc. yet battery technology hasn't advanced in years. Whoever improves battery tech is going to be the richest person in the world. Think about it.
Edit: Btw, mine was set to WCDMA preferred although in Network Settings it was on Auto so I changed it to Auto.

mobilehavoc said:
It's amazing right - we have dual core 1Ghz processors in our smartphones with 1GB of RAM and high res screens, 4G data, etc. etc. yet battery technology hasn't advanced in years. Whoever improves battery tech is going to be the richest person in the world. Think about it.
Edit: Btw, mine was set to WCDMA preferred although in Network Settings it was on Auto so I changed it to Auto.
Click to expand...
Click to collapse
I thought 512MB of RAM?
Can someone explain to me what WCDMA is? I am in a 2G only area. Should I select GSM only?

Erislover said:
I believe the problem that plagued my phone was the dreaded 50% cell standby problem. If you're unaware of this problem, essentially the issue is that "cell standby" (found under settings --> about phone --> battery use) is at or around 50% always -- in other words, it doesn't matter that the phone has fine reception, is or is not being used, or even has the signal active (that's right, the problem persists even with airplane mode activated).
Click to expand...
Click to collapse
Okay. I read the original thread and it sounds like the 50% is refering to the "Time Without Signal" value when you actually click on Cell Standby. Not the value of Cell Standby itself.
My G1 running FroYo last month had at least 50% Cell Standby with only ~1% Time Without Signal and the battery lasted about 2.5 days with moderate use.
I'm not an EE so obviously, I could be wrong about this.

You sir have just received a thanks, because this could also be the cause of some of our data issues and how the phone picks up on 3G vs 4G signal. Im doing some testing regarding APN and now with this hidden menu. Have noticed my speeds are a little bit better then they were. Battery drain was not a problem for me before.

Thank you! i did this to mine and my husbands g2x's last night. seems to have fixed the switching issue

Battery drain issues: last attempt - with screenshos and dumps

Hi guys,
I am hoping someone may notice what's going on with my device... I am at a loss. Attaching all screenshots and dump file from BetterBatteryStats (may need to open in Wordpad for the spacing work).
To summarize, my battery drain is very inconsistent. Some days it lasts a long time, 2-3 hrs of screen time, can stay in standby for over 2 days. And then some days it drains very quickly, like right now - it drops by 3% every time I basically turn on the screen to check e-mail/messages. I think we can all agree that 4 hrs of standby and 15 mins of screen usage should not use 50% of the battery.
I have tried two different units (swapped thinking my battery was faulty), and the issue persists - so I think it has to be something related to my software setup. I am running the AT&T LTE stock phone, 1.85 firmware. I have tried doing the full factory reset (clearing all settings/apps/storage), and cycling the battery.
Some folks have mentioned that my drain seems to begin when I hit an area with low/no signal (I take the subway to work in the morning), and then persists - as if something is trying to sync/connect somewhere, but can't... so it keeps looping and draining the battery.
My autosync is only on for Gmail, Google calendar (not contacts), and Weather (every 2 hrs only). Phone is not overly hot, battery is at 86 degrees right now. My brightness is at 40%.
If someone has any ideas, please share - I am at a loss, I don't know what to do... but battery life has got to be better than this, at least in terms of consistency.
Thanks so much.

Little to no signal is a battery killer.

Right, but the phone drains like crazy after the signal is regained. It doesn't drain much while there is no signal. Besides, what are people supposed to do when they lose signal? Restart the phone afterwards or lose all battery?
Also, some days it works just fine (and I still take subway to work on those days and lose signal) - so not consistent. I don't think it's simply the fact that no signal kills my battery in this case.

SmiLey497 said:
Little to no signal is a battery killer.
Click to expand...
Click to collapse
But OP is getting huge drops in the battery level when network signal is green (full signal strength); and also screen mostly off. Which is very odd . . .

Sounds like there are other folks experiencing this issue, related to signal drop in LTE (riding a subway, etc.):
http://forum.xda-developers.com/showthread.php?t=1719227

neocryte said:
Hi guys,
I am hoping someone may notice what's going on with my device... I am at a loss. Attaching all screenshots and dump file from BetterBatteryStats (may need to open in Wordpad for the spacing work).
To summarize, my battery drain is very inconsistent. Some days it lasts a long time, 2-3 hrs of screen time, can stay in standby for over 2 days. And then some days it drains very quickly, like right now - it drops by 3% every time I basically turn on the screen to check e-mail/messages. I think we can all agree that 4 hrs of standby and 15 mins of screen usage should not use 50% of the battery.
I have tried two different units (swapped thinking my battery was faulty), and the issue persists - so I think it has to be something related to my software setup. I am running the AT&T LTE stock phone, 1.85 firmware. I have tried doing the full factory reset (clearing all settings/apps/storage), and cycling the battery.
Some folks have mentioned that my drain seems to begin when I hit an area with low/no signal (I take the subway to work in the morning), and then persists - as if something is trying to sync/connect somewhere, but can't... so it keeps looping and draining the battery.
My autosync is only on for Gmail, Google calendar (not contacts), and Weather (every 2 hrs only). Phone is not overly hot, battery is at 86 degrees right now. My brightness is at 40%.
If someone has any ideas, please share - I am at a loss, I don't know what to do... but battery life has got to be better than this, at least in terms of consistency.
Thanks so much.
Click to expand...
Click to collapse
Step 1: Remove sense.
Step 2: Proceed to experience the best battery life I have ever seen on an Android device.
If you do not want to remove sense then you need to take a very close look at your apps because something in the apps is responsible. I personally think its HTC sync or some other rediculous service that comes preinstalled on the phone. Something is trying to sync or communicate and is hanging.
Like I said, get rid of sense and save yourself the hassle. Nova Prime + AOKP = the best mobile operating system known to man.

I am a bit new when it comes to Android and all the various ROMs out there. To remove Sense, do I need to unlock the bootloader and install a custom ROM? Or can I install an alternate launcher (like Nova Prime)?
Thanks!

neocryte said:
I am a bit new when it comes to Android and all the various ROMs out there. To remove Sense, do I need to unlock the bootloader and install a custom ROM? Or can I install an alternate launcher (like Nova Prime)?
Thanks!
Click to expand...
Click to collapse
To remove sense you'll need to install a custom ROM such as AOKP or cm9. Those will remove sense. You can find AOKP in the general section under the title "AOKP lives!!" and cm9 under developement. They both have flaws such as the camcorder not working, but considering the flaws that sense has out of the box, you're much better off in my opinion. cm9 and AOKP will get infinitely better in the coming weeks as they iron out the bugs. Sense is disgusting bloatware that is piled on top of stock android. It takes a ton of resources and makes even the simplest tasks a chore. Once you go to an AOSP ROM I don't think you'll ever go back. I can multi task away for hours and come back to another app that wasn't closed out of memory. Try that with sense.
To install a ROM you'll need to:
Root
unlock bootloader
Install a custom recovery
Backup your entire ROM with that recovery
Flash whatever you want
All of the directions of how to do this are in the dev section. Let me know if you have any questions.

Installing a AOSP ROM (such as CM9 and AOKP) will completely "desense" your phone.
Installing a ROM based on stock (like all of the CleanROMs) will get rid of most of the HTC stuff but Sense will still be there.

Thank you seh and rohan, I will give that a try. Will read up on it and let you know if I have questions.

neocryte said:
Thank you seh and rohan, I will give that a try. Will read up on it and let you know if I have questions.
Click to expand...
Click to collapse
Seriously just go check it out in the dev section. If you are unsure or have any questions at all come back here and let me know. I can walk you through all of it. Don't be afraid of ruining your device or anything like that. This stuff is all one click these days and isn't bad at all. I can literally walk you through every step if needed. Just check it out yourself though, I bet you'll be fine

Thanks again. Reading through the dev section now. Seems relatively straight-forward... just need to get home to get this stuff going.

neocryte said:
Thanks again. Reading through the dev section now. Seems relatively straight-forward... just need to get home to get this stuff going.
Click to expand...
Click to collapse
FYI, the root process failed for me 2 times before it took. Just keep trying and it will go. Once you are rooted, you'll never have to plug your phone into a computer again. You can do anything from the device, no questions asked.

neocryte said:
Hi guys,
I am hoping someone may notice what's going on with my device... I am at a loss. Attaching all screenshots and dump file from BetterBatteryStats (may need to open in Wordpad for the spacing work).
To summarize, my battery drain is very inconsistent. Some days it lasts a long time, 2-3 hrs of screen time, can stay in standby for over 2 days. And then some days it drains very quickly, like right now - it drops by 3% every time I basically turn on the screen to check e-mail/messages. I think we can all agree that 4 hrs of standby and 15 mins of screen usage should not use 50% of the battery.
I have tried two different units (swapped thinking my battery was faulty), and the issue persists - so I think it has to be something related to my software setup. I am running the AT&T LTE stock phone, 1.85 firmware. I have tried doing the full factory reset (clearing all settings/apps/storage), and cycling the battery.
Some folks have mentioned that my drain seems to begin when I hit an area with low/no signal (I take the subway to work in the morning), and then persists - as if something is trying to sync/connect somewhere, but can't... so it keeps looping and draining the battery.
My autosync is only on for Gmail, Google calendar (not contacts), and Weather (every 2 hrs only). Phone is not overly hot, battery is at 86 degrees right now. My brightness is at 40%.
If someone has any ideas, please share - I am at a loss, I don't know what to do... but battery life has got to be better than this, at least in terms of consistency.
Thanks so much.
Click to expand...
Click to collapse
Here is what I'd do before installing custom ROMs etc. (Not that I am discouraging you against that but, if your device is indeed faulty then unlocking the bootloader will void your warranty and HTC may not replace/fix it.) And, you'd have wasted countless hours trying to fix the issue with software that was hardware to begin with.
1. Run the battery test *#*#3424#*#*, press 'Accept', Go to More and run 'Battery Test'. Follow instructions in there. If the battery isn't faulty i.e. after one hour the battery level is still greater than 85% (The function test shows a different number) your battery is fine. Else, ask HTC to fix it.
2. If your phone passes the battery test; turn on 'Airplane mode' when you get into an area with spotty signal. This should address your suspicion regarding that.
3. Display: display seems to be draining the most battery - doesn't mean it actual does but, at least the phone seems to think it is. Try reducing brightness to around 20% for a day - I know it is too dim but, it will eliminate that possibility.
4. If you have facebook installed - turn off all syncing. Especially the HTC sense social plugin always tries to update it from facebook.
Based on the screenshots, it seems that the battery drains very quickly when you have the screen on, even with good signal strength.
Lastly, as an alternative to point 2 above, turn on airplane mode for 1 hour and turn off sync, remove all widgets from home screen(s) and just use the phone on wifi with stock browser - see if it drops as quickly or not.
Having gone through it, I understand how frustrating this is. In the end, I rooted and completely desensed my phone (only keeping essentials - basically recreating clean rom). I do not use Auto Sync but manually engage it every few hours to update everything. And, keep the brightness to 30% most of the time.
Hope this helps, good luck.

john_tillman, thanks for the suggestions as well!
1. I did the battery test, finished at 92%. So I think I'm OK there.
2. I will try doing airplane mode before subway rides going forward, will see if that helps.
3. Something is funky with the way the battery meter app is measuring this. Basically the battery doesn't move - and then when I unlock the phone, it drops like 3%. So my suspicion is that I'm losing battery, it just doesn't get updated until I fire up the screen.
4. Yep, all syncing is turned off. I only have Gmail/Gcalendar syncing now.
I've been playing around with the phone(s) earlier as well - keeping it in airplane mode and just watching movies/etc. makes it last forever. It really does seem to be something with the signal and perhaps something in Sense.
Have you tried CleanRom? I do like the visuals in Sense, would be sad to go to bone-stock ICS... but battery is more important.

neocryte said:
john_tillman, thanks for the suggestions as well!
1. I did the battery test, finished at 92%. So I think I'm OK there.
2. I will try doing airplane mode before subway rides going forward, will see if that helps.
3. Something is funky with the way the battery meter app is measuring this. Basically the battery doesn't move - and then when I unlock the phone, it drops like 3%. So my suspicion is that I'm losing battery, it just doesn't get updated until I fire up the screen.
4. Yep, all syncing is turned off. I only have Gmail/Gcalendar syncing now.
I've been playing around with the phone(s) earlier as well - keeping it in airplane mode and just watching movies/etc. makes it last forever. It really does seem to be something with the signal and perhaps something in Sense.
Have you tried CleanRom? I do like the visuals in Sense, would be sad to go to bone-stock ICS... but battery is more important.
Click to expand...
Click to collapse
I experience the same thing. After my subway commute and after I regain signal, battery doesn't drop until a couple of seconds after o turn on my screen, but it drops like 3%.
Sent from my HTC One X using Tapatalk 2

Rooting, and unlocking the bootloader
I was able to go from stock 1.85, to sick-sense ROM in a matter of minutes yesterday. I was nervous at first even though I know what I was doing, although all was good after following the instructions given on each step of the process. I haven't really bricked a phone before because this was my first smartphone ever, But I believe that the worse thing that can happen is soft bricking your phone, which can be resolved by RUU. I hope this helps you out.
Regarding OP, I had MUCH MUCH more battery life compared to bone stock. I used to get 3 hrs screen on time with 20% brightness, now Im at 4-5 on 50% under similar usage. One last thing to note; LTE, Auto sync, GPS, and low reception, are the most battery eating thing on the phone assuming you don't have rouge apps (wakelocks).

JCon0320 said:
I was able to go from stock 1.85, to sick-sense ROM in a matter of minutes yesterday. I was nervous at first even though I know what I was doing, although all was good after following the instructions given on each step of the process. I haven't really bricked a phone before because this was my first smartphone ever, But I believe that the worse thing that can happen is soft bricking your phone, which can be resolved by RUU. I hope this helps you out.
Regarding OP, I had MUCH MUCH more battery life compared to bone stock. I used to get 3 hrs screen on time with 20% brightness, now Im at 4-5 on 50% under similar usage. One last thing to note; LTE, Auto sync, GPS, and low reception, are the most battery eating thing on the phone assuming you don't have rouge apps (wakelocks).
Click to expand...
Click to collapse
GPS has no affect on battery life unless it is being actually used. Its not going to drain battery just by being enabled. Auto sync has minimal impact on battery as well, unless you are getting 5 emails every 1 minute. Push is always more battery friendly than pull. (unless there is heavy traffic)
About the low reception thing. While it does indeed affect battery life when the phone is constantly looking for service, it is not as bad as you would think. I sit in an area at my work that has about 1 bar of service. The phone will go from 1-0 bars to searching, about every 5 minutes or so ALL day long for 8 hours. To see the impact this had on my battery life, I did some experimenting. I basically ran my phone in airplane mode for 3 days and then compared and averaged the results over 3 days of normal use with the phone having bad service.
I lost 8% more over an 8 hour work day.

neocryte said:
john_tillman, thanks for the suggestions as well!
1. I did the battery test, finished at 92%. So I think I'm OK there.
2. I will try doing airplane mode before subway rides going forward, will see if that helps.
3. Something is funky with the way the battery meter app is measuring this. Basically the battery doesn't move - and then when I unlock the phone, it drops like 3%. So my suspicion is that I'm losing battery, it just doesn't get updated until I fire up the screen.
4. Yep, all syncing is turned off. I only have Gmail/Gcalendar syncing now.
I've been playing around with the phone(s) earlier as well - keeping it in airplane mode and just watching movies/etc. makes it last forever. It really does seem to be something with the signal and perhaps something in Sense.
Have you tried CleanRom? I do like the visuals in Sense, would be sad to go to bone-stock ICS... but battery is more important.
Click to expand...
Click to collapse
No, I didn't try clean ROM. But, I took the change log from one of the clean ROMs and deleted most of the apps that can be safely deleted. So, I do sort of have a clean rom and it works fine so far - in terms of battery life. When I used to boot with stock rom, I used to have 150 - 170 mb free ram. With the clean up that I performed - now, free RAM is 270 - 300 mb after a reboot.

Try disabling LTE and see how your battery does.
Click on mobile network settings, and choose gsm/hspa auto.

[P3110] Battery Charging Issues

Greetings;
Im having a weird issue (again - but with different device now).
After re-flashing about 4 or 5 times my p3110 with stock firmware (i never used customs) my battery wont charge to 100% anymore... It will reach 99% and wont reach 100%.
This happened to me previously with i9003.
Actually with i9003 everytime i flashed my device the battery would show a lower value each time.
Also; with i9003 i used Custom Roms; and used to " Erase Battery Stats "; wich such erase seemed to be the problem.
Since i've never erased my stats (to keep my device as close to factory as possible); what could be causing this issue?
Any experts on this matter that can provide me accurate info?
Thanks in advance.
Best Regards;
Richard

rgxHost said:
Greetings;
Im having a weird issue (again - but with different device now).
After re-flashing about 4 or 5 times my p3110 with stock firmware (i never used customs) my battery wont charge to 100% anymore... It will reach 99% and wont reach 100%.
This happened to me previously with i9003.
Actually with i9003 everytime i flashed my device the battery would show a lower value each time.
Also; with i9003 i used Custom Roms; and used to " Erase Battery Stats "; wich such erase seemed to be the problem.
Since i've never erased my stats (to keep my device as close to factory as possible); what could be causing this issue?
Any experts on this matter that can provide me accurate info?
Thanks in advance.
Best Regards;
Richard
Click to expand...
Click to collapse
The first thing that must be checked here is that wall charger and usb cables are not at fault. It maybe a coincidence that happened at the same time you started flashing stock firmware.
2nd depends on the firmware which you have chosen,
Different firmwares have different ways of working. Some have blocking modes, some have power saving modes, different set of features, different bugs as well too.
It might be a glitch altogether as well.
Nobody can explain this exactly accurate unless you try these options. Mine aee just aimed at pointing you to the right direction.
---------- Post added at 05:15 PM ---------- Previous post was at 04:41 PM ----------
One more point, tried discharging it completely? Then charging it in offline/online mode?
Now what about battery stats?
Erasing battery stats, well if you have searched on google about it, you would have seen mixed comments about it's affecting battery life, some says it does help, some says it doesn't.
Some feels It's better to do it and
some prefer better to leave it untouched.
My experience on same issue
I had 2 same sduos devices.
on both I used to flash roms
Custom, stock, everything.
Only difference was, on first one, I did erase battery stats many times.
And the second one I didn't ever touched it.
Result-well the first one, I got 4 other batteries replaced for it, and even the new ones would have trouble keeping the charge on the device after I wiped the battery stats. I couldn't blame the battery stockist for giving me 4 faulty batteries. Battery levels were erratic on stock, on custom.
Second one seems working pretty much nicely and i still haven't replaced the original one. Although on this, sometimes I have a glitch, where battery level would drastically go down after restarting the device and slowly build up to the same level without charging.
I know it's a glitch coming from the custom kernel side. Altogether it's better this way.

Greetings Billysam;
Thanks for your repply.
I aleady had checked both (Charger and Cables) they seem to be just fine.
Yesterday i decided to give my p3110 a good rest while charging and finally it charged completely.
Seems like the last 1% (to achieve full battery charge) requires a little bit more time than usual.
It may have been something related to the last flash i've done or due to constant use.
Stil... It is hard to point out what has really happened.
I was a little bit affraid that my battery or System got messed up somehow.
Do you know if flashing affects the Battery Stats in any way?

rgxHost said:
Greetings Billysam;
Thanks for your repply.
I aleady had checked both (Charger and Cables) they seem to be just fine.
Yesterday i decided to give my p3110 a good rest while charging and finally it charged completely.
Seems like the last 1% (to achieve full battery charge) requires a little bit more time than usual.
It may have been something related to the last flash i've done or due to constant use.
Stil... It is hard to point out what has really happened.
I was a little bit affraid that my battery or System got messed up somehow.
Do you know if flashing affects the Battery Stats in any way?
Click to expand...
Click to collapse
The last one percent does take extra time to reach that last 100% charged level.
The answer to your question is Yes and no.
Where is batterystats stored? It's stored inside root/data/system folder
When you flash or format your device data, it gets wiped too as well
So, Yes. cause it got deleted even when you only deleted data.
It affect battery No. Why?
What information that file has? Is it really important?
Information that you see in settings battery
It holds record of all the past history not the current ones. Or future ones.
Now you decide.

Greetings;
Superb Answer!
Exactly the answer i required.
That gives me whole new perspective, and confirms my theory regarding past and new files when flashing.

rgxHost said:
Greetings;
Superb Answer!
Exactly the answer i required.
That gives me whole new perspective, and confirms my theory regarding past and new files when flashing.
Click to expand...
Click to collapse
Further additional bummers
I was checking the batterystat in my device, and to my findings i saw, the file got modified after I full charged the device. So, it gets rewritten/modified/deleted after each full cycle. So, regardless of flashing rom or data, that file is constantly deleted, modified and created!!
Now suppose if I decide to delete that file holding my current charge capacity information, or the better so called "battery calibration" or "wipe battery stats" from cwm, which is nothing more than deleting it the same way from a root manager.
The file would be created again after restart, with new stats, which could be random or the lowest or highest values, according to the algorithm. Which would be seriously clueless of what the heck did happened to it!
That should clear why people claimed to have good and bad experience with their battery stats.
Even if their battery were good, the stats showed it bad and vice versa.
The algorithm is not at all easy to crack, let alone be calibrated. Even If someone would try to do it, Highly impractical, nor worth it. False claims.
Easiest was deleting it, thinking of it as a refresh, users would do it. And termed the coin calibrated.
"Got better", worked!!
No? Keep Wipe again and again.
So many apps were popular for calibration as well that time. Around 4 years back. I Can't remember their names but i did tried them as well!, in the beginning!!
I did learn from my mistake over the years, thanks to you I looked for answer inside me today. Although I stopped that habbit long ago, but you reminded me of digging deeper today
It should never be done.

Greetings Billysam;
Thank God i'm not the only one reaching such conclusion.
I've done pretty much the same steps; except i didn't knew what to check within the "battery stats" file, and i wasn't aware of the algorythm behind it.
I've tested pretty much those applications as well by that time with my i9003. (Back then someone said iDeleting Battery Stats / Calibrating had a "bogus" effect...)
Well.. I did noticed lots of differences each time i Deleted the " Battery Stats " - Either with CWM or through some application.
Sometimes Good improvement, sometimes terrible (until battery got fat, and stopped charging completely - Actually my i9003 is stuck at 60 or 80%, it simply wont go further).
After so many "Mistakes" on my i9003 i realized that the Battery Stats should be left untouched to prevent any " damage " / issues. I just didn't had a clue what exactly was behind that " Battery Stats " file ( Changes and Operations - or Code if you Prefer)
...
With all this being said and tested.
It seems Logical that Whenever we put a device charging, it should charge completely without interruptions.. Else it may or may not corrupt the file, algorythm or make the battery faulty.
Maybe these are the reasons why manufacturers advice people to fully charge their devices, and in some devices to "Not Fully Discharge " them.
Ofcourse, this is just a theory.