Related
I'm going to try to purchase my Nexus S before class tomorrow when they open. Don't want to take any chances on it selling out. Would it be wise to turn it on and use it a while during the morning? Or does the battery need to be fully charged before using it to condition it and ensure a good battery life? I've read many battery tips but i'm still a little confused on whats better for a new battery.
CaliLove310 said:
I'm going to try to purchase my Nexus S before class tomorrow when they open. Don't want to take any chances on it selling out. Would it be wise to turn it on and use it a while during the morning? Or does the battery need to be fully charged before using it to condition it and ensure a good battery life? I've read many battery tips but i'm still a little confused on whats better for a new battery.
Click to expand...
Click to collapse
When you get it, deplete it, but do not let it die. Ever. Then just cycle it normally.
zachthemaster said:
When you get it, deplete it, but do not let it die. Ever. Then just cycle it normally.
Click to expand...
Click to collapse
What do you mean by "die".... like to 0%, if so what should we take it down to?
azn2050 said:
What do you mean by "die".... like to 0%, if so what should we take it down to?
Click to expand...
Click to collapse
Yes, by letting your battery "die", per se, you're letting it deplete to 0%. I'd say for safe measure, between 5%-9%. But if you're in the vicinity of a charger take it down to 2%. If not, turn it off at 5%, then plug it in before powering it back on. My devices' daily life lasts so long (on all devices I own) because I properly know how to cycle a battery.
If you let your battery die (0%), it'll lose more and more charge (on a 0.00% level) every time. When you get it tomorrow though, it should have ~50%-60% charge.
CaliLove310 said:
I'm going to try to purchase my Nexus S before class tomorrow when they open. Don't want to take any chances on it selling out. Would it be wise to turn it on and use it a while during the morning? Or does the battery need to be fully charged before using it to condition it and ensure a good battery life? I've read many battery tips but i'm still a little confused on whats better for a new battery.
Click to expand...
Click to collapse
There's no need for that, only if it doesn't have any juice.
More info: batteryuniversity dot com
Battery life?
So how are your batteries doing? Mine is kind of crappy. What supposedly changed in 2.3? I see no difference in the reporting of apps in Battery Use and they took away Battery History in the hidden system settings. Where is the graph everyone talked about?
You gotta give it a few charging cycles for the battery to reach it's full potential. Give its few days, you'll notice it will get better after you charged it a few times.
Sent from my Nexus S using XDA App
The battery life on mine is chugging along pretty well. I gave it a full charge before hitting the streets. Its been 4 hours with wifi and GPS on with a couple dozen pictures taken and a bunch of apps dl and installed. used maps 5.0 and periodically hit the GPS for my position getting really good accuracy while driving and the battery level still has a little more than 4/5s battery life still remaining
Sent from my Nexus S using XDA App
hah2110 said:
So how are your batteries doing? Mine is kind of crappy. What supposedly changed in 2.3? I see no difference in the reporting of apps in Battery Use and they took away Battery History in the hidden system settings. Where is the graph everyone talked about?
Click to expand...
Click to collapse
You haven't broken it in yet, use your brain.
The phones barely been out that long, it takes a while to have good statistics about battery life.
Myth on lion
rashad1 said:
You haven't broken it in yet, use your brain.
Click to expand...
Click to collapse
Sent from my Nexus S using XDA App
I haven't even reached the full 100% charge yet, been using it then charging it some then using it then charging it some. Lol
hah2110 said:
So how are your batteries doing? Mine is kind of crappy. What supposedly changed in 2.3? I see no difference in the reporting of apps in Battery Use and they took away Battery History in the hidden system settings. Where is the graph everyone talked about?
Click to expand...
Click to collapse
hah2110 said:
Myth on lion
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
That's funny because every company that sells back up batteries tell you to go through 4-5 full cycles before it reaches its potential. I guess you're right, and they're all wrong.
They are wrong. Google it
Sent from my Nexus S using XDA App
Battery
how do I train my battery it was halfway charged when i got it do I let it die and then put it on the charger thanks!
EDIT:WRONG SECTION DELETE THIS MODS!
I've always charged all the way up then ran the battery all the way down, then charged all the way up again. Then periodically, I will run the battery all the way down just to give it a little exercise. So far out of all the cell phones I have had I have had 1 battery go bad on me, that was 8-10years ago.
Battery
how do I train my battery it was halfway charged when i got it do I let it die and then put it on the charger thanks!
matter of opinion really.... I would kill it by playing with it.... then do a full charge
that is what I am doing
Generally the suggested method is to charge it for 8-12 hours as soon as you can, then use it until it gets very low, then charge for another 8-12 hours. Do this cycle about 3 to 4 times and you've got yourself a healthy battery.
Killing the battery entirely, despite popular belief, can have some negative effects on its health. Especially during is conditioning phase.
What is the best ROM for Desire S in terms of battery.
I used virtuous unity 1.29.0 and it's battery backup was quite good then my original ROM.
But after updating to new virtuous unity 1.31.0 the battery backup goes quite bad.
Anyone know a good battery backup ROM for desire s?
Calibrate your battery, really works!
Instructions:
1. Turn your phone on and charge it for 8 hours our more
2. Deplug charger, turn your phone off And charger it fit one hour
3. Turn your phone on, wait 2 minutes,turn your phone off and charge it for one hour
4. Turn phone on and your battery life should be much better now
Sent from my HTC Desire S using XDA Premium App
Don't forget to sacrifice a virgin and hire a shaman.
Cmon ppl! Li-Ion and Li-Poli batteries do not require forming (yeah its forming not formatting). Ni-Cd and Ni-MH were the types that required this.
In extreme situations (charging over 20hrs) you can even damage/reduce capacity of your phone's Li-Ion battery.
ptenteges said:
Don't forget to sacrifice a virgin and hire a shaman.
Cmon ppl! Li-Ion and Li-Poli batteries do not require forming (yeah its forming not formatting). Ni-Cd and Ni-MH were the types that required this.
In extreme situations (charging over 20hrs) you can even damage/reduce capacity of your phone's Li-Ion battery.
Click to expand...
Click to collapse
So are you saying NOT to calibrate your battery that way?
Yeah.. is that really works?
Sent from my HTC Desire S using XDA App
try miui rom.......... my battery life is superb.. i tried every custom rom in my point of view miui is perfect... try it once......
olyloh6696 said:
So are you saying NOT to calibrate your battery that way?
Click to expand...
Click to collapse
I'm saying that the type of the battery used in Desire S is not formable. Additionally in extreme situations you can damage it by overcharging it. This is more complicated, because it also depends on the type of charger, and charging hardware in the phone.
What DesisreS says looks exactly like forming process, hence my response.
What you (possibly) can do, is calibrate your device/os to properly read battery status and use it more efficiently. But this is done through some software tricks I don't know.
Our battery is smart.
Overcharging it won't do anything. It just cuts off the electricity when reaching 100%. Full voltage is around 4.2V. If you look at your voltage while charging, it's already at 4.2V at around 70%. I have no idea why it does that.
And at 0% it's not really empty. It still has around 3.5V. It gets dangerous at 3V where it won't be able to charge again.
Just clear your battery stats in recovery or use an app from the market and see what happens.
Read and search around the forum for more info.
ptenteges said:
I'm saying that the type of the battery used in Desire S is not formable. Additionally in extreme situations you can damage it by overcharging it. This is more complicated, because it also depends on the type of charger, and charging hardware in the phone.
What DesisreS says looks exactly like forming process, hence my response.
What you (possibly) can do, is calibrate your device/os to properly read battery status and use it more efficiently. But this is done through some software tricks I don't know.
Click to expand...
Click to collapse
+1
You can use the app called battery calibration from the market for the calibration
Charge battery to 100% & run the app
This does not increase battery life but helps the OS read the battery more accurately & this needs to be done after installing a new ROM
kartkk said:
+1
You can use the app called battery calibration from the market for the calibration
Charge battery to 100% & run the app
This does not increase battery life but helps the OS read the battery more accurately & this needs to be done after installing a new ROM
Click to expand...
Click to collapse
Uhuh, this is what I mean. But lets go back to the original question, what are your experiences with different ROMs and battery life? I'm going to be Desire S user soon so I'm curious too.
ptenteges said:
Uhuh, this is what I mean. But lets go back to the original question, what are your experiences with different ROMs and battery life? I'm going to be Desire S user soon so I'm curious too.
Click to expand...
Click to collapse
LeeDroid ROM. Offers great battery life and very close to stock ROM. I got 1/2 day use on stock ROM with heavy use when I first got it, then put leedroid on, now I'm having 1 full day heavy use before I have to charge my phone (15%)
(Includes a lot of syncing, WiFi, web browsing, music,games etc the whole day)
Sent from my HTC Desire S using XDA Premium App
Thanks guys.
I decided to go with virtuous rom. it's new version is coming out with very good battery life.
vishalduggal said:
Thanks guys.
I decided to go with virtuous rom. it's new version is coming out with very good battery life.
Click to expand...
Click to collapse
not just good battery life but many more awesome features
@olyloh6696 i think you should also try the vu beta im impressed by it
i really hope the next version of miui for desire s will have better battery life, i think it's the best looking rom and i will definitely keep it when battery is improved!
Hi guys, have 10 mins so decided to write up little explanation about batteries.
Main purpose of this thread is not "how to look after li-ion battery so it stays alive forever" but rather how to get best day to day performance without killing battery prematurely (before contract expires lol)
First of all, there is no such thing as battery conditioning or calibration with Li-Ion. When people say that, they refer to BATTERY STATS (software side) knowingly or unknowingly.
Second. Battery stats. Forget about clearing them every time you flash A ROM. ONLY do it if something is seriously wrong with battery reporting, you'll "feel" exactly when it's happening. Poor battery life is not caused just by bad stats normally, erratic and weird percentage reporting is. If you wipe stats every time you flash new ROM, it will take few full cycles to rebuild them during which you will experience poor battery life and blame the ROM obviously.
Third. Try to stick to FULL cycles as much as you can, 100%-0%-100%-0%. This helps to keep battery stats healthy.
Fourth. Discharging battery to 0% is NOT BAD! I repeat, it's not bad. That is until you start trying to discharge it completely by trying to start up the phone, or do not charge immediately (or within reasonable amount of time). Batteries are smart nowadays, and they shut down when they still have some charge left (surprise, surprise) so they don't get damaged.
This ^^^ works for any smartphone really, but keeping to full cycles help our Sensations especially, as it helps with touchscreen problems (see my or zmfl's threads).
All of the above are my findings, experimenting, searching net or discussing with other smartphone users, I have no hard data to prove it. So either believe it or don't, it's up to you. I know quite a few people who agree with the above.
If you find this useful i'd recommend making it sticky.
Any further questions will be answered to my best knowledge, and if i don't know something i'm sure fellow members will join in. I'll add more Q/A's to OP as they come.
Part 2
Bump charging.
Hmm, tough one. An odd battery will benefit from it, but most batteries wont. Bump charging will eventually damage battery and you'll be worse off in the end. Not recommended.
Battery percentage jumps up and down after reboot (Sensation specific)
Has been discussed A LOT here. There are plenty of explanations why it happens, I'm not sure if any of them correct, but the main thing is, just disregard it as it will catch up with correct % pretty soon by depleting faster/slower.
This is the best thread for battery IMO.
Thanks
likuku said:
This is the best thread for battery IMO.
Click to expand...
Click to collapse
Sent from my HTC Sensation Z710e using XDA App
Thank you! Finally, a post on battery life that is actually factual.
Still not sure about the whole "Full discharge/charge" cycles, since Li-ions prefer partial charge, but regardless. Nice one
Sent from my HTC Sensation XE with Beats Audio Z715e using XDA App
282 views and 5 votes? Seriously?
As a electrical engineer I have to disagree with some of the statements.
From what I studied it's best practice to keep your Li-Ion fully charged. Keeping your battery discharged for a long time may decrease your battery lifetime. Yes, there are safeguards, but still it isn't healthy for the battery. It's not like going under a magical barrier of 3500mV causes dmg to the battery and 3501mV causes no dmg at all. It's bull****.
How to maximize your battery life?
Do not charge your battery when you're running high demanding tasks.
Do not softreset your phone when you're charging.
Do not discharge your battery when it's not needed.
Keep your battery dry.
Do not expose your battery to temperatures above 50C or below 0C.
Cool. Very good info, will add to OP if you don't mind.
Regarding discharge, I did say that if phone dies you should charge it immediately I do not recommend "killing" it, ie trying to start phone when its dead repeatedly.
It is indeed good to keep Li-Ion topped up at all times, bit disadvantage of that is messed up battery stats, which will cause incorrect readings and premature shut down- hence bad battery life.
Jackos said:
As a electrical engineer I have to disagree with some of the statements.
From what I studied it's best practice to keep your Li-Ion fully charged. Keeping your battery discharged for a long time may decrease your battery lifetime. Yes, there are safeguards, but still it isn't healthy for the battery. It's not like going under a magical barrier of 3500mV causes dmg to the battery and 3501mV causes no dmg at all. It's bull****.
How to maximize your battery life?
Do not charge your battery when you're running high demanding tasks.
Do not softreset your phone when you're charging.
Do not discharge your battery when it's not needed.
Keep your battery dry.
Do not expose your battery to temperatures above 50C or below 0C.
Click to expand...
Click to collapse
Sent from my HTC Sensation Z710e using XDA App
Jepp, doing 100%-0%-100%-0% cycles will result in best battery "calibration", but that's just software based as you mentioned. This would be excellent for older battery types.
And very good for Android battery stats. Basically, what I posted is explanation how to keep battery stats healthy while not damaging battery. From battery point of view, yes just keep it topped up to preserve it the longest. From Stats point of view, drain,charge,drain,charge is the best thing. Both are not good for each other. But, I'd rather have healthy stats for best performance in day to day use if I had to make a choice, since Anker is only 12gbp, and if I kill one, I'll just get a new one.
OP is basically how to keep Stats/Battery balanced without affecting each other too much.
Just remember disclaimer, all of the info is what I found by reading and from personal experience. You don't have to take it for granted.
Jackos said:
Jepp, doing 100%-0%-100%-0% cycles will result in best battery "calibration", but that's just software based as you mentioned. This would be excellent for older battery types.
Click to expand...
Click to collapse
Sent from my HTC Sensation Z710e using XDA App
Nice FAQ, mate. Helpful infos imo.
Sensation Xe battery with 2 days use
i have rom ARHD 3.6.7, bricked kernel 1.5 and my battery last 2days with moderate use
i only wip battery stat once when flash new rom.
The best charging strategy (for a long battery life, in terms of persistance) for a vehicle with a range extender (e.g. used in Stuttgart in some of the Mercedes buses) is keeping the charge between 40 - 60%. Higher and lower will shorten the life of the battery more. Since these vehicles use LiIon batteries, I think it should be the same for smartphone batteries.
Sibbi said:
The best charging strategy (for a long battery life, in terms of persistance) for a vehicle with a range extender (e.g. used in Stuttgart in some of the Mercedes buses) is keeping the charge between 40 - 60%. Higher and lower will shorten the life of the battery more. Since these vehicles use LiIon batteries, I think it should be the same for smartphone batteries.
Click to expand...
Click to collapse
Not exactly. Technology is fair bit different there afaik. Also, them batteries cost thousands, Anker costs a tenner.
Purpose of this thread is not how to preserve battery longest, but how to get best performance day to day use without killing battery too soon.
Sent from my HTC Sensation Z710e using XDA App
tinky1 said:
Not exactly. Technology is fair bit different there afaik. Also, them batteries cost thousands, Anker costs a tenner.
Purpose of this thread is not how to preserve battery longest, but how to get best performance day to day use without killing battery too soon.
Sent from my HTC Sensation Z710e using XDA App
Click to expand...
Click to collapse
Cool as you know my topic was closed most of issues have been solved although battery life remain in progress. If you don't mind I will be happy to post my results from anker here in compare to stockresults as I have plenty screens to compare and both batteries have been use on exactly same setup with same use.
Sent from my Sensation using XDA App
Yeah, carry on. Just specify wherever you followed advice from the OP or not.
Sent from my HTC Sensation Z710e using XDA App
tinky1 said:
Yeah, carry on. Just specify wherever you followed advice from the OP or not.
Sent from my HTC Sensation Z710e using XDA App
Click to expand...
Click to collapse
Mostly. My topic was reopened so I will keep on posting there on regular bases however after week or two when I will finish testing will post my final results and comparison here as well. My topic is already messy so it will be kind of blog on testing battery life and because this one is clear and nice I will just upload screens with final results.
Sent from my Sensation using XDA App
Good lad. I like your style, seems very sensible
leyus said:
Mostly. My topic was reopened so I will keep on posting there on regular bases however after week or two when I will finish testing will post my final results and comparison here as well. My topic is already messy so it will be kind of blog on testing battery life and because this one is clear and nice I will just upload screens with final results.
Sent from my Sensation using XDA App
Click to expand...
Click to collapse
Sent from my HTC Sensation Z710e using XDA App
Similar to a mechanical device that wears out faster with heavy use, so also does the depth of discharge (DoD) determine the cycle count. The smaller the depth of discharge, the longer the battery will last. If at all possible, avoid frequent full discharges and charge more often between uses. If full discharges cannot be avoided, try utilizing a larger battery. Partial discharge on Li-ion is fine; there is no memory and the battery does not need periodic full discharge cycles other than to calibrate the fuel gauge on a smart battery.
Source:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Comments:
Yes I will still do my 5 full charge, discharge cycles to calibrate stats nicely but then I will try to replace my batteries before they are gone, reading that convinced me that there is no point on doing this to often, at the end of the day, how big can be impact of software stats on battery life? With this article you can clearly see that way you charge it does have massive impact. I'm not arguing that proper calibration etc. does not have it but still don't think it is that much as this article reviled.
Thanks!
Bad battery stats might simply shut down your phone before it should (say you might still have 20% left but phone thinks battery is empty).
Again, I'll repeat myself, I'll sacrifice £12 battery for the sake of having phone running longer any time, but main purpose of this thread is how to get most out of battery without sacrificing It's longevity too much too soon.
Let's not go down the route where people argue about how to preserve battery from dying for 10 years, its not the point.
Sent from my HTC Sensation Z710e using XDA App
I have been seeing a pretty good amount of posts lately about how to properly calibrate your battery. This is a quick step by step guide on how to do so.
I will outline 2 ways to calibrate your battery.
The first way is using a free app from the android market (easiest IMO)
The second way is using CWM.
But first.... Some common questions.
Why would I need to calibrate my battery?
Anytime you flash a new rom it is recommended to calibrate your battery to optimize the battery life of your device.
You can calibrate your battery at anytime if you believe you should be getting better battery life.
How does it work?
When you calibrate your battery you are wiping your batterystats.bin. This allows for your operating system to create new battery stats that can drastically improve your battery life.
Using battery calibration app
First, install Battery Calibration by NéMa from the android market.
Once installed...
1. Charge your phone to 100%
2. Without unplugging your phone... open battery calibration
3. You will have to allow root permissions if first time using the app. Make sure the app says your phone is charged to 100% as well. Your voltage should be 4200mV or as close as possible.
4. Click on battery calibration in the middle of the screen.
5. Unplug your phone.
Now your battery stats are fully wiped. To fully create new clean stats follow the next steps.
6. Without charging your phone at all... let it die completely until it shuts off.
7. Plug your phone in and without a break let it charge to 100%
8. Unplug your phone
9. Let your phone die completely until it shuts off.
10. Fully charge your phone to 100% battery again.
11. Unplug your phone.
12. Let your phone die completely until it shuts off (last time)
13. Charge your phone back to 100% again.
CONGRATS! Your battery is fully calibrated!!
Note: it is recommended to do 4 full cycles to completely calibrate your battery but you should notice a difference after the first cycle.
USING CWM
1. Charge your phone to 100% full.
2. Reboot to CWM (recovery)
3. Scroll down using volume keys and choose advanced
4. Choose wipe battery stats
5. Reboot phone.
Now your battery stats are wiped. To fully create new clean battery stats follow steps 6 through 13 above.
As stated this is just a quick guide for reference for anyone having questions regarding calibrating your battery. If I have left anything out feel free to mention and I will add it in asap.
If this post helped you please hit the thanks button
These threads are useful too.
http://forum.xda-developers.com/showthread.php?t=1334950&page=2
http://forum.xda-developers.com/showpost.php?p=16771651&postcount=41
The second is from the Tab forum, but apparently our phones have the same MAX17042 fuel gauge chip which reads open circuit voltage to provide battery stats. As Vlad_z states, deleting the log file does not actually calibrate the battery, this is done automatically with the MAX17042 chip. The 2nd link does give instructions on how to reset / calibrate this chip without a jig.
I have definitely noticed a difference after using the battery calibration app as well as clearing battery stats through CWM.
I did try vlad_z calibration as well. I am still in the process of letting my battery die currently for a comparison. However it has been about 26 hours and I still have 37% battery left with moderate use.
I will be updating the OP to contain Vlad_z procedure as well
Nice post. I always just calibrate through cwm when I hit full charge. I never do three complete drains and recharges though. Usually one complete drain one complete charge and then use my phone as normal. Have you really noticed a difference doing four full cycles?
also it step 6. I've found if you power the phone back on after it dies it will truly kill the battery.
Still cool to get over 36 hours of use on this phone. Almost as good as my old dumb phone(which I sorely miss).
I have 5 batteries for this phone. 2 are 1500mAh and 3 are 1800mAh.
I assume I would have to recalibrate for each battery?
arclite00 said:
I have 5 batteries for this phone. 2 are 1500mAh and 3 are 1800mAh.
I assume I would have to recalibrate for each battery?
Click to expand...
Click to collapse
What do you need all that power for? Do you have five devices? I Would think you would calibrate based on which mah you are using since you are only deleting a file on your phone. I.e once for 1500 and only use those batteries.
Sent from my SGH-T959V using XDA App
arclite00 said:
I have 5 batteries for this phone. 2 are 1500mAh and 3 are 1800mAh.
I assume I would have to recalibrate for each battery?
Click to expand...
Click to collapse
Internal memory of the fuel gauge chip has room for two battery profiles, it cannot hold 5... so, if you are using all 5 then state of charge (soc) reported back to OS level would be pretty much inaccurate.
You can delete batterystats.bin all day long with cwm or apps - this is just as usefull as dancing with rainstick around your phone.
If you absolutely need multiple batteries then stick with same nominal 1500 or 1800. That way fg chip would report average value, granted your batteries should be the same age and health.
Posts like these are truly helpful, This should be sticked imho. I'm a complete noob to flashing, just performed my first two flashes last night, and it's a job trying to scour through these forums and read through all the posts trying to find the information you are looking for. I did it, and I'm very happy with the results. Damned if I was going to ask a question on these forums. you guys got me scared. hehe.
Anyway thanks, as this was the next piece of info I was hunting for!
Hello,
I have three batteries : 2x Original 1560 mAH and 1x 2430 mAH
How to calibrate them with my HTC Sensation ?
adlene72 said:
Hello,
I have three batteries : 2x Original 1560 mAH and 1x 2430 mAH
How to calibrate them with my HTC Sensation ?
Click to expand...
Click to collapse
If you are rooted, you can use the app from the market
Sent from my SGH-T959V using xda premium
In charging after fully discharging the phone, do i charge it while it is off or can i charge it while it's on?
Battery calibration by deleting the file is now known to be complete snake oil. Confirmed in the code as well. Deep discharge cycles, along with heat, are enemies of Li ion batteries. While it seemed a very good idea at the time, following this procedure is now known to be only detrimental to battery life, even if it makes people feel good.
Posted from my SGS4G, thanks to Team Acid development
Jeff is correct. Since these instructions the myth about battery calibration has been debunked
Sent from my SGH-T959V using xda app-developers app
jeffsf said:
Battery calibration by deleting the file is now known to be complete snake oil. Confirmed in the code as well. Deep discharge cycles, along with heat, are enemies of Li ion batteries. While it seemed a very good idea at the time, following this procedure is now known to be only detrimental to battery life, even if it makes people feel good.
Posted from my SGS4G, thanks to Team Acid development
Click to expand...
Click to collapse
So whats the proper charging way now? Thanks for the info though!
Sent from my LT26i using xda app-developers app
darkace007 said:
So whats the proper charging way now? Thanks for the info though!
Sent from my LT26i using xda app-developers app
Click to expand...
Click to collapse
Keep the phone between 20-85% otherwise heat will destroy the battery. Charge the phone as often as you can and avoid extra heat from charging.
help..
pls help me.after doing battery calibaration?my battery % was 0 only.how am i gonna fix that?even though i charge so many times.it get 0 % only.pls help me fix that problem.tnx
Necro-rez of a tread that has already stated "don't do this" ain't gonna fix it for you. Why don't you post what your hardware, firmware, and software are in another thread, along with very clearly detailed description of what you did and what happened (with what you expected to happen, if different).
Without that, "Not a bug" "Move along, nothing to see here."
after pressing "calibrate" from app and unplug phone from charger, do i have to let the phone discharged without it being disturbed from any battery usage activities e.g. messaging, play games, browsing internet etc? or I can use the phone while it discharges? i hope to not defeat the purpose of calibrating the battery.
adhawk said:
i hope to not defeat the purpose of calibrating the battery.
Click to expand...
Click to collapse
There is no purpose for this kind of "battery calibration" process. It has been thoroughly debunked. It is generally accepted, however, that deep cycling of the batteries shortens their lifespan.
do i need to charge it off, after draining the battery ?
Dianne Hackborn - 6:42 PM - Public Today's myth debunking:
"The battery indicator in the status/notification bar is a reflection of the batterystats.bin file in the data/system/directory."
No, it does not.
This file is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings.
That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."
It has no impact on the current battery level shown to you.
It has no impact on your battery life.
Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it for away.
Source:
https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT
Finally.
Sent from my HTC Sensation 4G using XDA App
nice find. guess the perceived improvement in battery accuracy/life is all placebo
mrmako777 said:
nice find. guess the perceived improvement in battery accuracy/life is all placebo
Click to expand...
Click to collapse
Yes, like so many other things...
mrmako777 said:
nice find. guess the perceived improvement in battery accuracy/life is all placebo
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Click to collapse
Is that what wipe battery stats does? I have never noticed any difference when I did that. To think of all the times I have run the battery down, cleared the stats, charged it, and cleared the stats again with no noticeable results.
Sometimes it seems like the battery life gets thrown off by flashing a new rom. It isn't necessarily getting worse battery life but the indicator will work funny like it will show 99% for 3 hours and I will think I am getting great battery life and then go to 30 in the next 20 minutes. It is like the UI gets confused. My tablet will sometimes say "connect your charger" even though the battery and indicator are 100%.
I don't think people realize how much drain the display is on the battery. They flash a cool rom and use it a lot and then think they are getting bad battery life because the display has been on for two hours while they play with it. It is amazing the amount of difference I get between when I am fidgeting with my phone while I am at work (have to recharge during the day) and when I am at home on the weekend and it sits on the kitchen table most of the time (it will generally go all weekend without a charge).
Wonder why its even an option to wipe battery stats with apps or recovery if it doesnt do anything. I never saw a difference myself, I just wiped them periodically cause others seemed to think it made a difference.
Always worked for me. Been flashing since g1 days. whatever
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jayb222 said:
Always worked for me. Been flashing since g1 days. whatever
Sent from my HTC Glacier using xda premium
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Ya well she helped make the original rom for your g1 so she must be wrong. The thickness of some peoples head
Sent from my Galaxy Nexus
mark manning said:
Ya well she helped make the original rom for your g1 so she must be wrong. The thickness of some peoples head
Sent from my Galaxy Nexus
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+1 lol
Sent from my HTC Glacier using xda premium
First of all those of us who actually knows about Android OS really knows that /data/system/batterystats.bin is nothing more than stats audit. Now if you think you can't actually re-calibrate battery and project that data than your a fool. It has nothing to do with that file.
First of all to accurately predicate it you need a true daemon that's capable of tracking system data with full autonomy access. Second you need correct battery specs from the manufacturer. As reading memory from it may or not even be supported by the device kernel if its not allocated. Thus you see issues with cross link batteries on stock roms, but some is exceptional with similar size, specs.
Now to project the correct data from ~1-100% you need to fully discharge for it to cycle. Yes I know some of you maybe saying never fully discharge Li-Io but if you know the min mV rating then you can stop near suggested mV as it won't go below and damage cells. From then the duration of full charge is defined along with total available mAh. By calculating discharged -mA draw pre scale unit over empty estimation you can predict the true battery percentage.
Ex: ATM my uptime is 14h 47m at 65% with moderate usage (talk, txt, web). Since I have MP1650mAh battery I'm currently at 1072mAh. As its drawing -90mA per scale unit with 4156mV. At this current rate fully projected empty estimation is 9h 38m. Keep in mind my deviceis highly optimized and is on very aggressive battery saving mode.
Sent from my HTC Glacier
HTC Glacier said:
First of all those of us who actually knows about Android OS really knows that /data/system/batterystats.bin is nothing more than stats audit. Now if you think you can't actually re-calibrate battery and project that data than your a fool. It has nothing to do with that file.
First of all to accurately predicate it you need a true daemon that's capable of tracking system data with full autonomy access. Second you need correct battery specs from the manufacturer. As reading memory from it may or not even be supported by the device kernel if its not allocated. Thus you see issues with cross link batteries on stock roms, but some is exceptional with similar size, specs.
Now to project the correct data from ~1-100% you need to fully discharge for it to cycle. Yes I know some of you maybe saying never fully discharge Li-Io but if you know the min mV rating then you can stop near suggested mV as it won't go below and damage cells. From then the duration of full charge is defined along with total available mAh. By calculating discharged -mA draw pre scale unit over empty estimation you can predict the true battery percentage.
Ex: ATM my uptime is 14h 47m at 65% with moderate usage (talk, txt, web). Since I have MP1650mAh battery I'm currently at 1072mAh. As its drawing -90mA per scale unit with 4156mV. At this current rate fully projected empty estimation is 9h 38m. Keep in mind my deviceis highly optimized and is on very aggressive battery saving mode.
Sent from my HTC Glacier
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Click to collapse
http://batteryuniversity.com/learn/article/how_to_prime_batteries
The truth is out there
Sent from my Galaxy Nexus
mark manning said:
http://batteryuniversity.com/learn/article/how_to_prime_batteries
The truth is out there
Sent from my Galaxy Nexus
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Click to collapse
And that is why you don't allow fools to use Google. Do you actually understand or comprehend what was said? Let me ask you this why do you think they "wipe batterystats"? What's the reason for it? lol he thinks you can't predict actual mV/mAh of battery based on mA draw lol now that isfunny. The whole reason of having any UI battery metter was based on what logic? Next time you Google.com something make sure you actually comprehend what was the logic behind it. Hey all THE truth is out there...
Sent from my HTC Glacier
HTC Glacier said:
And that is why you don't allow fools to use Google. Do you actually understand or comprehend what was said? Let me ask you this why do you think they "wipe batterystats"? What's the reason for it? lol he thinks you can't predict actual mV/mAh of battery based on mA draw lol now that isfunny. The whole reason of having any UI battery metter was based on what logic? Next time you Google.com something make sure you actually comprehend what was the logic behind it. Hey all THE truth is out there...
Sent from my HTC Glacier
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The sad part was I was backing up on what you said. Calm down read it in lame mans terms before you trip.
Sent from my Galaxy Nexus
Man, its getting hot in here. Lol.
Ok, so, if wiping battery stats is useless because it does NOTHING to the battery, is there a way to address the battery and force it to allow a slight overcharge on a regular basis, thereby shutting charging off at a higher capacity?
Please forgive my ignorance gentleman, and refrain from verbally bashing me.
I bought a 1550 mAh Anker battery. If I charge it to 100% and then use it, it stays at 100% for hours. Is this because my phone is waiting for it to drop below 1400 mAh, or what? If that's the case can I somehow tell my phone to consider 1550 mAh 100%?
I ask because of the mugen power app on the market. It intrigued me. Though there is a chance its a bunch.of balogna.
Sent from my HTC Glacier using XDA App
mark manning said:
The sad part was I was backing up on what you said. Calm down read it in lame mans terms before you trip.
Sent from my Galaxy Nexus
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Click to collapse
sorry I knew that was another possibility, my mistake. I thought the link you posted some how undermines what I said as you quoted me. As I only posted how to accurately predict and report battery data. Also I think you know who I am...
estallings15 said:
Man, its getting hot in here. Lol.
Ok, so, if wiping battery stats is useless because it does NOTHING to the battery, is there a way to address the battery and force it to allow a slight overcharge on a regular basis, thereby shutting charging off at a higher capacity?
Please forgive my ignorance gentleman, and refrain from verbally bashing me.
I bought a 1550 mAh Anker battery. If I charge it to 100% and then use it, it stays at 100% for hours. Is this because my phone is waiting for it to drop below 1400 mAh, or what? If that's the case can I somehow tell my phone to consider 1550 mAh 100%?
I ask because of the mugen power app on the market. It intrigued me. Though there is a chance its a bunch.of balogna.
Sent from my HTC Glacier using XDA App
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Click to collapse
That is THE prime reason people "wipe batterystats.bin" thinking it would fix staying for hours at 100% delay and heavy drop in short time. Which is sign of missing true data. Normally its measured via min/max mV and available mAh. Now by subtracting the used mA per scale unit the empty estimation is calculated. Thus projecting power draw at given duration and near accurate battery metter.
Sent from my HTC Glacier
HTC Glacier said:
sorry I knew that was another possibility, my mistake. I thought the link you posted some how undermines what I said as you quoted me. As I only posted how to accurately predict and report battery data. Also I think you know who I am...
That is THE prime reason people "wipe batterystats.bin" thinking it would fix staying for hours at 100% delay and heavy drop in short time. Which is sign of missing true data. Normally its measured via min/max mV and available mAh. Now by subtracting the used mA per scale unit the empty estimation is calculated. Thus projecting power draw at given duration and near accurate battery metter.
Sent from my HTC Glacier
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Click to collapse
kinda wondered if that was you, didnt have your typical avatar tho
Sent from my Galaxy Nexus
So with this being said then you don't have to worry about your battery percentage between flashing roms?
The battery life should be still accurate?
I have a 1700mah
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HTC Glacier said:
That is THE prime reason people "wipe batterystats.bin" thinking it would fix staying for hours at 100% delay and heavy drop in short time. Which is sign of missing true data. Normally its measured via min/max mV and available mAh. Now by subtracting the used mA per scale unit the empty estimation is calculated. Thus projecting power draw at given duration and near accurate battery metter.
Sent from my HTC Glacier
Click to expand...
Click to collapse
Yes, of course it is the prime reason. My question was, is there a way to tell the phone that 1550 is 100% or do I just deal with inaccurate monitoring that is based on a 1400 mAh battery?
Or, alternatively, will android figure it out over time and adjust for me?
Sent from my HTC Glacier using XDA App
answer me this: why in miui does the hardware led light up green when miui tells me im only at 90%? when i check the mv with the battery calibration app it tells me im at 4220 which is a full charge...what makes miui not see that the battery is full?
Before battery calibration, regardless of what happens, I was getting 9 hours, light usage. After battery calibration I get 19 hours, medium use. I'll stick with it with my thick headed self.
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