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I had seen one too many posts about people asking and complaining about battery drain issues on their G1 phones and it gets tiring to read it every 5-10 posts. So I decided to create this thinktank to pool in ideas from the community and create a set of best practices to maximize mileage of our phones. I'm currently using a HTC Dream with stock battery and my battery life is pretty good with light to medium usage. I would like to contribute to the community by creating this thinktank thread. I hope this can help as a guide for myself and for people who have been having numerous battery drain issues on 5.0.7-DS and variants of this distribution.
This is NOT the ultimate end-all solution for your battery problems. These are just steps to tackle the problem. If you want minimum to no battery drain keep it plugged to socket or plug it in a car battery.
If you would like to contribute your experience, or make any corrections please do not hesitate to post and I'll include them if they seem fit and attach your name as reference. I'll also do my best to give credit where credit is due. Please see the references at the bottom part of the post. Please do not clutter this thread by doing "I'll try this" or "It doesnt work" post. Its more important for all of us to know WHY it work/didnt work. Stick to topic, and be constructive. Be intelligent. Think first.
0. Update your Radio
Updating your G1's radio to the currently-latest version (2.22.23.02) should give you better battery life as well as signal reception (you can always switch back to 2.22.19.26I if it doesn't work out for you)
1. Recalibrate
Take note that BATTERY STATS ARE WIPED whenever you flash a new rom. (since full wipes are required whenever changing ROMS, and /data is where the battery info is.) This usually leads to inaccurate battery readings.
Here's how you recalibrate properly:
- Charge your phone till the GREEN LED shows up. Leave it for another hour.
- While plugged, go to recovery and wipe your battery stats.
- Right after the phone is booted up and settled, unplug and use as per normal till it shuts off. Then charge as per normal.
2. Disabling some basic phone hardware functionality
Turn off GPS, WIFI when not in use. And brightness set to manageable levels. Even loudspeaker. This is self-explanatory. Automation software like LOCALE can be useful, but usually all it takes for you to turn off your ringer, or turn on wifi when you're at a specific area is just a press on the Power control widget.
3. Overclocked kernels
Running on full overclock speed (by default is 528mhz or even higher on some kernels) will drain your battery faster and you'll notice significant heat increase when you're using your phone along with 3G.
Although im using pershoots 576mhz overclock kernel, I do not max it to 576 unless needed. The reason why I use his kernel is due to its UNDERVOLT capability. I have set up my phone using SetCPU
MAXFREQ: 480,
MINFREQ: 176
CPU Governor : ONDEMAND.
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Usually I would set my phone to 384mhz if im going to stay on it longer (texting/long browsing etc). On the sleep mode I set it to 122mhz to 384mhz.
4. Tame your widgets, minimize using them.
Widgets that constantly connect to the internet, or constantly refreshing on the screen to update data being shown on the screen at extremely small intervals would also give you battery drain. Minimizing widgets can help minimize applications running in the background (free up memory) and avoiding your phone going on "partial sleep". Also tweak your widgets to update as less as manageably possible. If for some reason you can't see the next suggestion.
Aside from that you might want to disable Background syncing and do manual syncing. Aside from saving your data plan, it also saves battery life. You can disable it by doing the following:
Menu > Settings > Accounts & Sync > Background Data - OFF
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manually update your facebook widget or contacts/gmail by
Menu > Accounts & Sync > Facebook (or GMail) > Sync.
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5. 3G, 2G, switch off, or automate it.
You'll notice that inside the default settings for mobile networks. Setting to 2G will "save battery" which is actually true. The connection will definitely be slower, but if you like your phone to last longer throughout the day, either switch to 2G or turn it off altogether.
Also, similar to juice defender, I use 2g/3g toggle and toggle data as and when needed.
Another suggestion that I just found out recently is the use of Juice Defender app [d]. It automatically turns on or off your APN settings at intervals. You might want to try to look at that app if you cannot do #4
6. Disable live wallpapers. Auto Updating Sense
Remember that 2.1 isnt actually built for our old phones. and livewallpapers do require cpu/gpu processes. These are also running in the background and may run while your phone is asleep. So turning them off will benefit you.
7. Refrain from using Automated task killers and choose what you kill.
If you see that the app you had been trying to kill a few times keeps coming back. Stop killing it. Everytime you do, and whenever it respawns, CPU flies to 100%. Go back to #4.
8. Disable Market notifications.
- Open the Market application.
- Select the Menu key.
- Select Downloads.
- Select the Menu key again.
- Select Notifications.
- Select the Do not notify me radio button. press [Ok]
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9. Make your phone sleep.
Open your spareparts application, Go to End button behavior. Select "Go to sleep"
10. Under the hood tweaks
10.1 Extending Wifi scan intervals
Edit the wifi scan interval in /system/build.sapphire.prop (or build.trout.prop if you have a G1)
# Time between scans in seconds. Keep it high to minimize battery drain.
# This only affects the case in which there are remembered access points,
# but none are in range.
wifi.supplicant_scan_interval = 45
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Click to collapse
Changing this number to just 90 second will half your wifi scans. Obviously larger numbers can mean less wifi scans which means more battery life, though it may take a little longer for your phone to pick up a remembered access point when in range. This is not just a CM/Eclair thing, it can also work for Donut phones.
This setting needs a reboot after editing the file. Edit it with Root Explorer, or nano as root if you have CM5, or pull the file with adb then edit it then push it back.
11. Remove your phone from your pocket whenever you can.
Body heat deteriorates battery life no kidding! there had been already studies to back it. I keep my phone either on my hand or outside of my pocket to keep it cool. Do whatever is manageable in your environment. If you're using your phone as a music player streaming using streamfurious and stuff. dont let your body heat add to the heat already been generated by your phone itself.
References / Updates :
[a] cyanogen recalibrating batteries : http://wiki.cyanogenmod.com/index.php/Troubleshooting#Battery_recalibration
thanks to mejorguille for correction on /data and wiping.
pershoot UV kernel: http://forum.xda-developers.com/showthread.php?t=666850
[c] SetCPU main site : http://www.pokedev.com/setcpu/ - Thanks also to ShadowCH for tip.
[d] JuiceDefender : http://www.latedroid.com/2010/01/juicedefender.html -
- Thanks to shohid1234 for 3G-2G toggle
[e] Thanks to Jaymzz for tip on disabling market: http://forum.cyanogenmod.com/index.php?/topic/94-i-fixed-my-battery-drain/
[06/02] thanks to Arkain2k for tip #0
[06/04] Thanks to Foo_Blyat's tip for disabling background sync and manual updates for fb/gmail (item 4) http://forum.xda-developers.com/showpost.php?p=6670907&postcount=36
[06/04] Thanks to Super Jamie for tip 10.1 extending wifi scans http://forum.xda-developers.com/showpost.php?p=6684954&postcount=49
reserved in case something nice comes up
10. Remove your phone from your pocket whenever you can.
Body heat deteriorates battery life no kidding! there had been already studies to back it. I keep my phone either on my hand or outside of my pocket to keep it cool. Do whatever is manageable in your environment. If you're using your phone as a music player streaming using streamfurious and stuff. dont let your body heat add to the heat already been generated by your phone itself.
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really? isnt warmth charging batterys? in my old gameboy years i always put my batteries on the heater when the drained completely and after an hour i could play again with the old batteries.
1. Recalibrate [a]
Take note NOT TO WIPE BATTERY STATS whenever you flash a new rom and your battery is less than 90%. This usually leads to inaccurate battery readings. If you already wiped your battery during one of your flashes, here's how you recalibrate properly:
- Charge your phone till the GREEN LED shows up. Leave it for another hour.
- While plugged, go to recovery and wipe your battery stats.
- Right after the phone is booted up and settled, unplug and use as per normal till it shuts off. Then charge as per normal.
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Click to collapse
This is true, but since battery stats are stored on the data partition, a data wipe also deletes the battery stats. A lot of rom's require a full wipe, meaning data and dalvik, so battery stats are deleted whether you select the option or not.
Since001 said:
really? isnt warmth charging batterys? in my old gameboy years i always put my batteries on the heater when the drained completely and after an hour i could play again with the old batteries.
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Hi!
Yes Im very familiar with that practice because i do that too. The reason might be because of the composition of the battery (alkaline, non alkaline). Usually we put it under the sun so that the heat will help change the composition of the compound inside the battery in order for it to lower down its resistance. Leading to a "charge".
But now we are using Li-Ion batteries, and I do not suggest putting them under the sun because it will deteriorate your battery capacity holding charge and its lifecycle.
reference: http://www.batteryuniversity.com/parttwo-34.htm see figure 1.
samaral said:
Hi!
Yes Im very familiar with that practice because i do that too. The reason might be because of the composition of the battery (alkaline, non alkaline). Usually we put it under the sun so that the heat will help change the composition of the compound inside the battery in order for it to lower down its resistance. Leading to a "charge".
But now we are using Li-Ion batteries, and I do not suggest putting them under the sun because it will deteriorate your battery capacity holding charge and its lifecycle.
reference: http://www.batteryuniversity.com/parttwo-34.htm see figure 1.
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Thanks, that makes sense.
Made me lol to see that there actually is a "battery university"
Thank you! this post is noted
mejorguille said:
This is true, but since battery stats are stored on the data partition, a data wipe also deletes the battery stats. A lot of rom's require a full wipe, meaning data and dalvik, so battery stats are deleted whether you select the option or not.
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Noted. I have edited the guide to reflect your insight.
Thank you very much
how about going to setting - about phone - battery use?
there you can find out exactly whats killing your battery and take appropiate action.
Also, similar to juice defender, I use 2g/3g toggle and toggel data as and when needed. Using these two widgets i have no battery issues.
Post noted and added on top
shohid1234 said:
how about going to setting - about phone - battery use?
there you can find out exactly whats killing your battery and take appropiate action.
Also, similar to juice defender, I use 2g/3g toggle and toggel data as and when needed. Using these two widgets i have no battery issues.
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Click to collapse
Noted. Your suggestion is added on top.
change preferred network type helped for me increasing battery life
Hello all,
as describe in post
forum.xda-developers.com/showpost.php?p=6432560&postcount=1
changing preferred network type worked for me.
default setting: WCDMA preferred drains my battery in a few hours, crazy
within CM 5.0.7-test7 I was able to change to: GSM/CDMA auto and it worked
But now in the final release 5.0.7-DS I can not select this setting. Perhaps it correlates to the this (PRL) info in brackets.
It seems that no "auto" setting want be working so I am trying WCDMA only right now and will see if I have a network in 2G networks too.
Bye morT
Hhmm let me think…
Running a prrocessor that's massively overclocked with software that was never meant to run on our g1's I have an idea.
****** off back to stock or get over it
I mean seriously people come on, we have set cpu for power profile management, basic battery usage which is dim screen, turn off wifi and 3g when not in use blah blah blah same **** written in every guide about battery life for ANY roms from cupcake to eclair.
As I said, get over it or go back to stock.
[highlight]Mod Edit: Please watch your language and don't flame others.[/highlight]
im sorry does turning on "display battery status" in spare parts still effect battery life? TIA
Ive noticed that bluetooth is killlllling battery life, but dont know if its normal. I charged to 100% and turned everything on, leaving screen on the whole time and what not.
While I was actively using the net over WiFi, I had nothing using the bluetooth, and both seem to eat up 20%..
This might be normal, might not be, but thought it was odd that it being on, but not in use, ate up just as much as functioning, in use, wifi.
whats funny to me is as soon as my phone dies i plug it up reboot it a few times and my battery is at 70%
.... i think its not reading correctly .. i mean fully charged play talk text browse till it shuts off .. plug it in turn it right back on then reboot ..
and my battery is back at 70% which is weird ... anyone else notice that???
also wifi, gps is on screen brightness is standard !!!
batteries really seem to be the least developed technology in our high tech phones. feels like a sportscar with a one gallon tank...the fun's over quickly...
turned off my 3G and got a lot of additional battery life. with bad 3G reception (like in the place I live in) the phone was sometimes sucked empty in just a few hours, now I get two days.
another thing that really helped me extend my battery life was turning on airplane mode when I went to bed.
how about dont use overclock or any other cpu speed up tool....maybe the speed they are factory set to is there for a reason...Hmmmmmmm
dcowboys2184 said:
whats funny to me is as soon as my phone dies i plug it up reboot it a few times and my battery is at 70%
.... i think its not reading correctly .. i mean fully charged play talk text browse till it shuts off .. plug it in turn it right back on then reboot ..
and my battery is back at 70% which is weird ... anyone else notice that???
also wifi, gps is on screen brightness is standard !!!
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You should go through a battery recalibration - steps on the first page.
Best Practices for Improving Battery Life for CM 5.0.7 (and variant ROMS) is to use this ROM, Thanks.
Do whatever you like, show or hide battery status in the Spare parts, calibrate or not....the battery remains....for loOng....enough time....
hot/cold controversy
Since001 said:
really? isnt warmth charging batterys? in my old gameboy years i always put my batteries on the heater when the drained completely and after an hour i could play again with the old batteries.
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Since I have a background in electrical theory and chemistry, let me end this debate once and for all: heat makes atoms (and therefore molecules) move faster. Lack of heat (cold) makes them move slower. In general, fast-moving atoms in batteries mean MORE power, not less. The reason your car doesn't want to start when temperatures are subzero is that the battery acid (electrolyte) molecules are moving too slowly to oxidize (give off e-, electrons) and turn back into positive ions. The same is true for the ol' Gameboy AAs -- put them on the heater, the dry cell warm up, and more electrons are transferred to the anode by anions, the positive ions (cations) are more able to travel to travel back to the cathode (in the case of dry/wet-cell rechargeable storage batteries). Heat acts as a catalyst to produce electricity. Some of you may have even taken your car battery indoors if the electrolyte froze in the winter. Some of your cars may have battery blankets or even battery heaters if you live really far up north. In addition, the process of charging a Li-Ion, Ni-mH, or even lead acid battery will produce heat, because chemical conversion is bi-directional, but anyway . . . you charge the G1, it gets hot. You use it heavily, it gets hot. You know you're spending electrons somewhere when it gets hot period. Keeping the phone cool will not increase battery life or make it charge fast. What lower battery temperatures will do is lengthen the battery's overall life. What happens if you leave meat out in 100F/30C temperatures? It goes bad quickly. Same principle in Li-ion. The rechargeable battery is ideally an efficient, closed system of ion exchange that should work for many (hundreds) of duty cycles, but eventually heat plays a role in deterioration of the electrolyte and chemical catalysts inside.
So put your extra charged batteries (but you don't want a Li-ion or Ni-mH battery to sit very long in an discharged state, so be careful here) in the refrigerator in an airtight bag (rotating on a daily basis) if you really want them to last a long time, but don't charge them frozen (ka-boom!) and remember cold batteries charge slowly. Car batteries in sub-tropical areas are replaced at a rate of about once every 24 months, but in Sweden? Maybe every five or six years. Cold temperatures slow down chemical deterioration just like cold keeps that steak from becoming maggot food.
Again, a hot G1 may weaken its own internal components and batteries over time, but putting it on ice won't give you an extra 6 hours to oogle Miley Cyrus' vBlog
Hope this helps.
For me, unless I'm expecting a text or a call always have my phone on airplane mode. I turn it off every hour or so to see if I got any unimportant texts, and then turn it back on
As some of you have been complaining about your Infinity's poor battery life, I thought we should start a thread on getting more out of its battery. I invite you all to share your experiences, hopefully we could come to sth helpful together.
Perhaps when the development's carried on further by more XDA developers, we can split this to stock ROM and custom ROMs, as probably the latter will have more of these already included.
1. Arguably full charge and discharge does nothing good on modern Li-Ion batteries and it's rather advisable to keep it balanced - discharge a little, don't push it with charging all the time (however in case of the Infinity, as with many other devices, the charger will just stop consuming energy after [almost] fully charging your device). There is one reason for doing a few full discharges and charges however - so that the battery monitoring apps/widgets can learn more about your battery's life and power consumption.
2. Monitor your battery life and monitor it wisely (don't use power-consuming apps and widgets). I personally like Battery Monitor Widget, as it gives you mA and % / hour (either drain or charge), which is pretty cool, as you can see how much your usage exhausts your battery in real time. This way I've found out that switching the WiFi off while reading books actually gives me battery drain closer to 10%/h than 15%/h etc. You can see some other in this apps thread. Try different apps and see what fits you best. Don't rely on system battery usage stats, see what other apps show us and what apps and processes drain the most of your battery, show most wakelocks, etc.
3. Use as low power mode as you need (administered most easily through ASUS/Android notification bar on the bottom of your screen). There are three power modes:
power-saving (keeps your CPU at 1 GHz according to some apps, 500 MHz according to others) <- can give you up to 2 additional hours
balanced (keeps your CPU at 1,5 GHz)
normal / performance (keeps your CPU at the highest speed - in stock kernel 1,7 GHz for the 1st core and 1,6 for the others)
You have to try these for yourself. Most games run well on balanced, but may sometimes need the performance mode (keep in mind that overheating your CPU and GPU may cause the clocks to actually slow down). You may also find yourself happy with the power-saving mode, which really helps your battery to last longer, but I've noticed issues with some apps while running it (problems with pdf rendering, for example), as it probably changes more than just the CPU clock speed, but also the system behaviour. I hardly ever leave the balanced mode, mostly when curious about benchmark results
There are also different CPU governors in Android/Linux kernel, which you can change if you are rooted, but perhaps leaving the default "interactive" one on should serve you well (you can also try "conservative", but it has been argued it doesn't save your battery so well in the long run).
(if rooted) You can also use CPU management apps like SetCPU, create your custom profiles or use the default ones according to your needs (for example ).
4. In ASUS setttings switch on both power-saving options at the very bottom of the list (WiFi and dock deep sleep [the former is the same as choosing "never" in WiFi advanced settings]).
5. Keep the screen brightness as low, as you can. It's better to adjust it manually through the notifications bar or a widget than to switch auto-brightness on (some recommend LUX app, personally I had problems with it trying to outsmart me when I was doing some manual changes). I like to keep it around 30-40% indoors during the day and 0-10% at night.
6. Switch WiFi off when you don't need it, unless you need it on constantly.
For me, it sometimes also helps organise my work too, when I don't get constant notifications or when I'm not eager to browse the web all the time, when just reading something and taking notes.
7a) (if rooted) Make your device fall into really deep sleep...
Add these to your build.prop file (see the thread on tweaking):
ro.ril.disable.power.collapse=0
pm.sleep_mode=1
7b) ...and make it scan for available WiFi networks less often, for example every 180 seconds (same as above):
wifi.supplicant_scan_interval=180
8. (if rooted) Switch off all the apps you don't need that auto-start on boot with a program like System Tuner.
(f not rooted) Use auto-killer for the apps you don't need (if rooted you can do the above two together as well).
You can also deactivate unused apps (settings -> apps -> [select app] -> deactivate). Remove bloatware, too (see the first few posts).
9. Adjust your minfree values, so the low level system task killer will take care of the apps running in the background for you (see the thread on tweaking). You can try with different settings and see what's better for you. Some apps drain your battery life even when you don't use them, while others don't and it's better to leave them in the memory than run them all over again every time. Do some tests and see what's best for you, if you have time for it.
10. Switch auto-syncing apps to lower values when possible (sometimes PUSH is better, sometimes worse for your battery life).
11. Keep it simple. Too many funky animations, floating wallpapers, lots of nice widgets will make your battery drain really fast.
12. Try different custom launchers, you can set more UI behaviour rules in these (see this apps thread).
13. Use a dark wallpaper and dark themes / night reading modes (see why).
PS JuiceDefender reported to having disabled deep sleep, so stay away if possible.
Hotmail app has been said to trigger wakelocks, while overriding system wifi sleep when screen is off, so keep that in mind if you want better battery life over constant e-mail syncing.
Hit [THANKS] if it helps.
First of all, thanks to d14b0ll0s for yet another great write up. I am one of those concerned with the battery life of the Infinity. Though some review says it got up to 9-9.5 hours with BALANCED mode I believe is the mistake. By using Power save mode, I think we can potentially get to that level but still hard.
My system is NOT rooted, but I have noticed significant change in my battery life so far with following:
1. Balanced Mode to Power Save mode.
This gets me like extra 2 hours or so. WIthout this change, 5-6 hours for my usage and with this it goes up to 7-8 hours screen time.
2. Under Wi-Fi Setting change Use wifi during sleep mode (mine is in Japanese so exact wording may be different) to never. Default setting was always. Prior to this change, I lost quite bit overnight unplugged; however, after the change it loses negligible amount.
Now rather than these, I am trying to play around with Juice Defender, which was recommended by d14b0ll0s in best application list he created. I have initially downloaded Juice Defender Free edition, and noticed may be minimal gain over #1 already instituted. But concept was great. So I ended up purchasing Ultimate edition, which allows us to control when to turn of WIFI per individual application based without Root i.e. while reading PDF I don't think I need WIFI connection.
https://play.google.com/store/search?q=juice+defender&c=apps.
I am still tweaking and playing with Juice Defender, but I am certain without change in #1,#2 (which are actually taken care by Juice Defender in its own way), I can gain same battery life and my hope/guess is I can get even more battery life.
So in conclusion, for those not rooted try Juice Defender (at least free version). I will let you all know how the ultimate version does in next couple days.
Thanks for this! ^^ Post 1 updated.
Have you noticed what power-saving mode changes apart from CPU (& GPU?) clock speed? Does it change auto-sync settings or unload some modules? I'm not using it, as it is too slow for me to render big pdfs consisting of scanned jpgs. But when I'm reading them with WiFi off on balanced, I normally get 9.9% drain per hour according to Battery Monitor Widget, which even with some other things that I do from time to time and some additional rendering when opening new files should give me about 9 hours on a single charge. Browsing over WiFi gives me about 7.
The Wi-Fi settings you mentioned are the same as WiFi power-saving settings on the bottom of ASUS setting list, but I've clarified that in post 1 now.
I'm happy JuiceDefender helped you, it's good to advertise it here. I'm adding the info about your post apart from the link to the list of apps.
Thanks
I would also add that it's good the deactivate unused apps/widgets (settings -> apps -> "select app" -> deactivate)
it's only possible for apps which cannot be uninstalled
Good point! ^ Added (-> p. 8).
Mine will be here this weekend.
Thanks d14b0ll0s
Look very useful! I'm about to try.
I think the standby time is awesome. Wifi off, power save mode enabled and left the tablet over night right after full charged battery w/o dock. After 10h still 100%.
Ali I Hagen said:
I think the standby time is awesome. Wifi off, power save mode enabled and left the tablet over night right after full charged battery w/o dock. After 10h still 100%.
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#nice
The system measuring system isn't exact, and early on so are all the indicators, so don't rely on it too heavily. There may be a variance of 1-3% and a lot more in the usage indicators. Try different battery / apps widgets and compare the results.
Anyway, deep sleep is nice indeed. It normally drains about 0.2% (-0,5%) per hour, mine is now 98% after the night off the charger and responding to a few e-mails in bed
Thanks for the info, it's appreciated.
Antutu's Battery Saver worked great on my 101, I'm observing how it will regulate the power drain on my 700. Hopefully it will keep the back of the tab cool as well.
i think the problem is when you have wifi on!
Ali I Hagen said:
I think the standby time is awesome. Wifi off, power save mode enabled and left the tablet over night right after full charged battery w/o dock. After 10h still 100%.
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this is good when you have wifi off. however, when you have the wifi on, it shows 80% wifi and 20% screen consumed by battery. you can stop network access by disabling wifi from Asus customized settings and also in wifi setting, you can keep wifi on during sleep to NEVER. this helps a lot..
Stock battery (usage) stats are not relevant, use other battery apps or widgets for that.
I've heard good things about AnTuTu's bat.sav., but also that it doesn't let you have more insight into what it's actually doing, so JuiceDefender seems a better option in that matter.
d14b0ll0s:
Do you know the specific voltage setting / configurations coming out of the usb line?
Is it 16V and how does it distinguish between 16V and 5V on the single USB cable.
For example does the voltage cable go on different lines for 16V and 5V for the TF700?
Or is it 16/5V dual switchable on the same power cable?
I'm asking this is because there's interest to charge the tablet by using alternative methods such as mobile battery with 16V setting.
If so, then does a DC to USB cable be suffice for the job? Or is the cable wired differently as proprietary ASUS?
Thanks!
Sorry, I wouldn't know that. There some ppl here that are doing some testing with the batteries and hardware, perhaps the_kreature or MartyHulskemper could know something. You should post it as a thread in Q&A too.
Redefined301 said:
d14b0ll0s:
Do you know the specific voltage setting / configurations coming out of the usb line?
Is it 16V and how does it distinguish between 16V and 5V on the single USB cable.
For example does the voltage cable go on different lines for 16V and 5V for the TF700?
Or is it 16/5V dual switchable on the same power cable?
I'm asking this is because there's interest to charge the tablet by using alternative methods such as mobile battery with 16V setting.
If so, then does a DC to USB cable be suffice for the job? Or is the cable wired differently as proprietary ASUS?
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Click to collapse
First of all, the charger gives 15V, not 16V. Avoid giving your tablet too much voltage as that can kill it...
Secondly, the included cable is a USB 3.0 cable and therefore has 5 extra pins (you can see them if you look straight into the USB plug). These extra pins are used to get 15V from the charger. I don't know exactly how that works, but I guess the tablet tells the charger it wants 15V over the power lines (same power lines as 5V) rather than the charger giving 15V over these extra pins (because that could be devastating to other USB 3.0 gadgets). This is why the tablet won't charge if you insert an old (USB 1.0 or 2.0) extension cable between the charger and the tablet.
Hey I'm running with wifi on during sleep and I seem to get great battery performance (2% loss over 11 hr standby). No build.pro tweaks so no deep asleep our anything like that. I'm wondering if anyone else has gotten similar performance?
I thought it was interesting because the results were the opposite on my tf300t, and my usage pattern hasn't changed much between the two devices.
Sent from my ASUS Transformer Pad TF700T
watwat1234 said:
Hey I'm running with wifi on during sleep and I seem to get great battery performance (2% loss over 11 hr standby). No build.pro tweaks so no deep asleep our anything like that. I'm wondering if anyone else has gotten similar performance?
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Click to collapse
Same here. Battery life on deep sleep with WLAN is great!
But I think the Infinity needs a lot of power while reading news, tapatalk, Reader HD..
Not more than 4 hours Screen On Time!
And that with balanced mode and 50% brightness.
Any problems with the fifth companion core?
PS: Is there an app which shows the activity of the different cores?
FAbi
Gesendet von meinem ASUS Transformer Pad TF700T mit Tapatalk 2
this is crazy, i got my tablet on monday, used it about 3-4 hours restoring all my apps and signing in to everything, and i havent used it much since but today, i'm still at 76%, havent plugged it in it or docked it. I also forgot to mention my dad played with it a bit also...prob about 1 hour
Is there any way to prevent the Surface from automatically shutting down when the battery reaches 5%?
I feel it's a waste of 5% of battery if the OS does not allow it to be utilised ...
Yeah plug in the charger
I have tried to go into settings and advance power management to try and remedy this, but no luck. It's programmed into the OS, I'm assuming, that the critical battery level is 5% and that's when the device has to shut down. (Same as in laptops as well.)
Is there anyway to bypass this though? Through registry tweaks, perhaps? I mean, the RT does have a command prompt; can we not put that to the test?
Bump.
arsi123 said:
Bump.
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Click to collapse
The OS thinks that you need at least that much power to finish saving your work and for it to do its background tasks before shutting down cleanly. I wouldn't want to change that.
Of course, that doesn't answer your question
I changed the low battery notification to 10%, it gives me time to plug it in when it's nearly low. Before then I'd be watching a video and it would give me the warning and shutdown almost immediately.
How did you do that?
boredtoday said:
How did you do that?
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Click to collapse
I've also done the same thing. Here's how (this also tells how to change auto shut-down):
1. Search battery, tap "Settings" on the searchbar.
2. Tap "change battery Settings"
3. In the following screen, tap "Change plan settings", then "change advanced power settings"
4. In that window, tap the "Battery" option
5. There are options that say "Low battery level" and "Critical battery level" you can change low battery level to change when the notification shows, and critical battery level to change the auto shut-down. I only turned critical to 4% to avoid doing a "dirty" shut-down, so as not to damage the system.
If I helped, please hit thanks!
I've not touched mine and its set to 3%....
Something done in an update perhaps?
Trig0r said:
I've not touched mine and its set to 3%....
Something done in an update perhaps?
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Click to collapse
ditto
So, just had to post this: it seems the Surface auto shuts down sooner if you set it below 5%. I had mine at 4%, and realized after a couple months (I don't usually hit the bottom of my battery) that it would shut down at about 7%. After re-setting it to 5%, it now ekes out a couple more minutes and goes all the way to 5%. So my recommendation is to leave it as it is.
If you make a new power plan, you can set it to below 5%, but I wouldn't do that if I were you...there's a reason it's set to 5%. You don't want those batteries to go to zero. Their life significantly reduces if you drop to to zero and full charge it constantly. It's better to let it only drop to 5%. In fact, I changed mine to 10%. The more you let your battery die, the more discharged it gets over time.
Hey guys so I know there are a few things that can improve battery life and some things that are supposed to help but may be a mith? Things as only draining battery to 10% and charging to 90% or something like this. What are tips that help? Also if you guys have changed your cpu settings that really improved the battery life let us know!
I drained my battery down to 0% after the second time I used it and it pushed my battery up from 3:30 to 5:30. I also use batterybar to see the stats and whatnot. Another thing you can do is go into power options in the Control Panel and change the plan settings > advance power settings. I usually change the Processor power management settings and the Intel Graphics Settings.
Kraize said:
I drained my battery down to 0% after the second time I used it and it pushed my battery up from 3:30 to 5:30. I also use batterybar to see the stats and whatnot. Another thing you can do is go into power options in the Control Panel and change the plan settings > advance power settings. I usually change the Processor power management settings and the Intel Graphics Settings.
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Click to collapse
do you ever charge it to 100%
Does leaving it on the charger like when playing a game or something matter? Does it stop charging once it reaches 100
AFAIK, leaving it on the charger shouldn't matter. It's a smart charger. I always charge it to 100%, but never go lower than 10%. I try to recharge around 15%.
Best thing I've done is disable my bluetooth since I have no devices that use it.
Second is lower the brightness while on battery.
I'm getting around 5:30 of battery life doing things like browsing, email, news reading, and using Autodesk Sketchbook Design.
Disable automatic brightness. Change the screen timeout to the lowest value that works for you. Turn off BT. Turn off live tiles and notifications for apps you don't need to update on your main screen and lock screen. Run the troubleshooter for power and see if you can deal with what it changes.
Hi,
I have a question regarding battery life of the OPO. I'm still not sure whether I have a defective battery, or some apps drains my battery like crazy (or both?). I hope you can help me with this.
In the first 2 weeks since I got it, I use my OPO for mid to heavy activities (a lot of Whatsapp, Youtube, streaming music, etc). I always start the day with 100% battery and I thought it was normal to see the battery drops to at least 20% at the end of the day. To be honest, I didn't check the battery stats in Settings even once in this time frame, and due to my heavy usage, once again I thought this was normal.
Until one night I decided to plug the charger earlier than usual, unplug it around 11pm (w/ 100% battery), then I fell asleep. I was shocked the next morning (8am) when I saw the battery has decreased to 65% with no activities whatsoever. I check the battery usage in Settings and then saw Google Play Services (GPservice) at the top of the list with 45% usage, with "keep awake" time almost identical to total time on battery. I did some research and found some advice including 1) denying GPservice abilities to "keep awake" and "wake up" via privacy guard (from this thread http://forum.xda-developers.com/oneplus-one/general/guide-google-play-services-battery-t2832525), 2) turn off location, 3) turn off sync, but none of them seems the solution to my problem. Since then, I always check the battery usage and reset it, to see if GPservice still at the top. Sadly it still there. After I reset the stats, go to sleep directly and check it about 1 hour later, GPservice uses 40% - 60% of the battery usage, draining about 6% battery / hour.
With screen on a few minutes, it easily drops to 5th or 6th place with ~7% usage, with screen and main apps I use on the 1st and 2nd place. When I googled about this using Firefox, that's when I start worrying about something else, the battery itself. With wi-fi and low brightness (less than >20% if I convert it from the slide bar), browsing with Firefox decrease the battery 1% in 2-3 minutes, no or low usage drains 1% in about 5-6 minutes. In contrast, charging increase the battery 1% in 1 minute. Is that normal? IDK, usually bad battery increasing faster when charging and decrease significantly when in use.
Please help, especially about the excessive GPservice battery usage. And if it's possible, I prefer non-root solution for it. Thanks and sorry for my bad English.
OPO - stock rom (unrooted XNPH44S)
Google Play Services 6.7.76 (reverted back to 5.0.89 factory version but things pretty much the same)
cliffflip said:
Hi,
I have a question regarding battery life of the OPO. I'm still not sure whether I have a defective battery, or some apps drains my battery like crazy (or both?). I hope you can help me with this.
In the first 2 weeks since I got it, I use my OPO for mid to heavy activities (a lot of Whatsapp, Youtube, streaming music, etc). I always start the day with 100% battery and I thought it was normal to see the battery drops to at least 20% at the end of the day. To be honest, I didn't check the battery stats in Settings even once in this time frame, and due to my heavy usage, once again I thought this was normal.
Until one night I decided to plug the charger earlier than usual, unplug it around 11pm (w/ 100% battery), then I fell asleep. I was shocked the next morning (8am) when I saw the battery has decreased to 65% with no activities whatsoever. I check the battery usage in Settings and then saw Google Play Services (GPservice) at the top of the list with 45% usage, with "keep awake" time almost identical to total time on battery. I did some research and found some advice including 1) denying GPservice abilities to "keep awake" and "wake up" via privacy guard (from this thread http://forum.xda-developers.com/oneplus-one/general/guide-google-play-services-battery-t2832525), 2) turn off location, 3) turn off sync, but none of them seems the solution to my problem. Since then, I always check the battery usage and reset it, to see if GPservice still at the top. Sadly it still there. After I reset the stats, go to sleep directly and check it about 1 hour later, GPservice uses 40% - 60% of the battery usage, draining about 6% battery / hour.
With screen on a few minutes, it easily drops to 5th or 6th place with ~7% usage, with screen and main apps I use on the 1st and 2nd place. When I googled about this using Firefox, that's when I start worrying about something else, the battery itself. With wi-fi and low brightness (less than >20% if I convert it from the slide bar), browsing with Firefox decrease the battery 1% in 2-3 minutes, no or low usage drains 1% in about 5-6 minutes. In contrast, charging increase the battery 1% in 1 minute. Is that normal? IDK, usually bad battery increasing faster when charging and decrease significantly when in use.
Please help, especially about the excessive GPservice battery usage. And if it's possible, I prefer non-root solution for it. Thanks and sorry for my bad English.
OPO - stock rom (unrooted XNPH44S)
Google Play Services 6.7.76 (reverted back to 5.0.89 factory version but things pretty much the same)
Click to expand...
Click to collapse
Definitely sounds like somethings not right, what apps do you have that access or could potentially access your location? If you're still not having any luck, as a last resort you could try a fresh install of CM11S and install your apps one by one to see if you can determine if any are responsible for sucking battery.
Give the below app a try:
https://play.google.com/store/apps/details?id=com.playfulgeeks.gservicefix&hl=en_GB
Install Gsam to see if you can gain any more insight into whats causing battery drain.
https://play.google.com/store/apps/details?id=com.gsamlabs.bbm
cliffflip said:
Hi,
Until one night I decided to plug the charger earlier than usual, unplug it around 11pm (w/ 100% battery), then I fell asleep. I was shocked the next morning (8am) when I saw the battery has decreased to 65% with no activities whatsoever. I check the battery usage in Settings and then saw Google Play Services (GPservice) at the top of the list with 45% usage, with "keep awake" time almost identical to total time on battery.
Click to expand...
Click to collapse
did you try to use this App: http://forum.xda-developers.com/showthread.php?t=1179809
there you can see which app prevents your phone from going to sleep (partial Wakelocks)
gsmyth said:
Definitely sounds like somethings not right, what apps do you have that access or could potentially access your location? If you're still not having any luck, as a last resort you could try a fresh install of CM11S and install your apps one by one to see if you can determine if any are responsible for sucking battery.
Give the below app a try:
https://play.google.com/store/apps/details?id=com.playfulgeeks.gservicefix&hl=en_GB
Install Gsam to see if you can gain any more insight into whats causing battery drain.
https://play.google.com/store/apps/details?id=com.gsamlabs.bbm
Click to expand...
Click to collapse
Maps, Google Fit, Google Now, among other things.
CMIIW but I read somewhere that GServicefix does the same like privacy guard, denying some service to keep awake, wake up, etc.
So I installed Gsam and run it about 1 hour. Interestingly in there, Kernel (Android OS) is on the top the % list with 60% usage (mostly phone in idle/sleep). When I switch sorting to Kernel Wakelocks, it shows event0-798 & event2-798 as the top 2 wakelocks with around 7000 wakelocks. I'll update in few hours, thanks.
drcyber said:
did you try to use this App: http://forum.xda-developers.com/showthread.php?t=1179809
there you can see which app prevents your phone from going to sleep (partial Wakelocks)
Click to expand...
Click to collapse
From what I read on the Play Store description, Kitkat and above requires root?
cliffflip said:
Maps, Google Fit, Google Now, among other things.
So I installed Gsam and run it about 1 hour. Interestingly in there, Kernel (Android OS) is on the top the % list with 60% usage (mostly phone in idle/sleep). When I switch sorting to Kernel Wakelocks, it shows event0-798 & event2-798 as the top 2 wakelocks with around 7000 wakelocks. I'll update in few hours, thanks.
Click to expand...
Click to collapse
Please post screenshot of gsam
Try clear cache+dalvic cache in recovery
Hi, sorry for the late reply.
It seems reboot the phone a few times solves the problem. Battery usage now seems normal when idle, even with location & sync turned on.