Related
http://www.nexusoneforum.net/forum/nexus-one-faq-how-tos/5625-calibrate-your-battery.html
RECALIBRATION:
A recalibration is mostly needed, when dealing with different kernels (ROOT!). Most custom recovery images provide the option "battery stats wipe" under the menue "Wipe".
Here is how ya do it!
1. Enter Recovery Mode
3. Enter "Advanced"-Menue
4. do "Wipe Battery stats"
5. reboot
Calibrate the battery by completely draining it until the phone completely shuts itself off.
Turn the phone on again and let it shut itself off one more time.
Then charge your phone while it is off for over 8 hours.
This will fully charge the battery so that when the Android is turned on, it now sees the battery as full.
It is recommended to repeat this process at least one more time.
You should see a significant increase in your battery’s charge life.
Calibration of a battery can be done at any point and a maintenance calibration is recommended every month.
Thanks for this useful guide
Hi,
Your posted information doesn't sound true for me. Why should recalibrating increase the battery life? The battery is full when the end voltage is reached an no more charge can be taken (4,2v @ lipo) and it is empty if the minimum allowed voltage is reached (should be with Deffy's technology 2,8v?). So why should recalibrating increase battery life?
Greetings, Jo
DOCIOHN said:
Hi,
Your posted information doesn't sound true for me. Why should recalibrating increase the battery life? The battery is full when the end voltage is reached an no more charge can be taken (4,2v @ lipo) and it is empty if the minimum allowed voltage is reached (should be with Deffy's technology 2,8v?). So why should recalibrating increase battery life?
Greetings, Jo
Click to expand...
Click to collapse
It's well known that this procedure will indeed produce better battery performance. Most devices have a similar procedure. Even HTC has given some calibration procedures in order to improve battery performance.
How do you enter Advanced Recovery? I can get my phone into recovery but that's all.
tim440 said:
How do you enter Advanced Recovery? I can get my phone into recovery but that's all.
Click to expand...
Click to collapse
Hey,
You have to user Clockwork MOD recovery, and then when inside it go to Advanced, and you will see the battery wipe option.
cheers
DOCIOHN said:
Hi,
Your posted information doesn't sound true for me. Why should recalibrating increase the battery life? The battery is full when the end voltage is reached an no more charge can be taken (4,2v @ lipo) and it is empty if the minimum allowed voltage is reached (should be with Deffy's technology 2,8v?). So why should recalibrating increase battery life?
Greetings, Jo
Click to expand...
Click to collapse
lion battery recalibration/recondition was already there long before android even existed...
Since I flashed several ROMs I tried this and I am happy! Battery consumption seems to be better after this workaround. I'm on 1.3 Ghz @ 72 Vsel with my Defy and easily reach an uptime of 2 days, mostly a bit more..
Thanks again!
There will be almost no impact on total runtime, just the percentage meter can become more accurate by "calibrating" the battery. In addition to a complete discharge (I do not encourage you to discharge more than ONE auto-off, you shorten the battery life by discharging below 3.0 V) you need to have a nearly constand discharge current on most phones for this calibration to become really accurate.
What is the effect? Well, not much. Your phone just knows better how much battery is left, so maybe the "empty batt" message @15% comes later. The usage time and the auto-off threshold are not impacted at all.
When we are talking about a battery that has been put away for months without use, you may be right. One charge-discharge-charge cycle may bring back some capacity. But this is not true for any regularly used battery.
If you care about battery life time (in months/years, not a single charge): Charging above 4,0 V has a great negative impact on it; Constantly holding the charge @ 3,5-4,0V may nearly double the life of a battery but you can only use about 50% of its capacity this way.
I'm not sure if calibration/full discharge is necessary/recommended. From many readings calibration is not necessary for lithium battery. Actually it is recommended against full discharge as lithium battery has limited full discharge/recharge cycles.
after doing research on all methods to recallibrate checking pros and cons finally i got the answer brothers...its very simple no need for cwm or drain full abttery kill your batery download recallibrate delete batterystat.bin....all fake bother....just do a simple step remove your battery for 2-5 minutes and than on it....you are recalibrated....simple
galaxyfitankit said:
after doing research on all methods to recallibrate checking pros and cons finally i got the answer brothers...its very simple no need for cwm or drain full abttery kill your batery download recallibrate delete batterystat.bin....all fake bother....just do a simple step remove your battery for 2-5 minutes and than on it....you are recalibrated....simple
Click to expand...
Click to collapse
See this screenshot.........i am charging my cell and it is showing also its charging but not even d graph nor the battery icon is increasing .
Seriously help me
see this sir...i hopwe u can help anything in this:crying:
abhinavvaidya90 said:
See this screenshot.........i am charging my cell and it is showing also its charging but not even d graph nor the battery icon is increasing .
Seriously help me
see this sir...i hopwe u can help anything in this:crying:
Click to expand...
Click to collapse
take out battery for about 10 minutes. And then try to charge again.
If you will see same problem i think you need to buy new battery.
http://forum.xda-developers.com/showthread.php?t=1443108
This is firmware problem format your phone and than it will be fine or go to stock firmware
galaxyfitankit said:
This is firmware problem format your phone and than it will be fine or go to stock firmware
Click to expand...
Click to collapse
i did but to no vail
then buy a new battery ?
buy i new battery bro...and if warranty left than go to service centre the problem also ...is your battery swelled up kya?
hey guys
i just wanted to calibrate my battery but i read that CurrentWidget must show 0mA before calibrating
it is now been 1 hour since it shows 100% but CurrentWidget want to go to 0mV ..
aras1 said:
hey guys
i just wanted to calibrate my battery but i read that CurrentWidget must show 0mA before calibrating
it is now been 1 hour since it shows 100% but CurrentWidget want to go to 0mV ..
Click to expand...
Click to collapse
Hmm, if you don't want to use the CWM battery stats wipe, get the market one and use that. What is Current Widget reporting for the Voltage should be close to 4.2.
TBH just use the phone, from 100% to 3% or so, it'll calibrate itself over 3 recycles or so.
gol_n_dal said:
Hmm, if you don't want to use the CWM battery stats wipe, get the market one and use that. What is Current Widget reporting for the Voltage should be close to 4.2.
TBH just use the phone, from 100% to 3% or so, it'll calibrate itself over 3 recycles or so.
Click to expand...
Click to collapse
voltage is 4218
Yeap...Look at the voltage, not the current. And mV means volts. (milivolts).
Im sure you were thinking mA, which is current draw. Current draw, mA, should be quite low when charged to 100%, so just go by the voltage. 4.2v for a fully charged cell battery.
EDIT: Your battery is charged. 4218mV is 4.2V.
Matt
mrg02d said:
Yeap...Look at the voltage, not the current. And mV means volts. (milivolts).
Im sure you were thinking mA, which is current draw. Current draw, mA, should be quite low when charged to 100%, so just go by the voltage. 4.2v for a fully charged cell battery.
EDIT: Your battery is charged. 4218mV is 4.2V.
Matt
Click to expand...
Click to collapse
+1
Grr, mine only goes to 4188mV, I'm loosing 30mV somewhere ;-)))
Hi
I have Samsung Galaxy S Plus and I'm looking for the following information:
1. Does the phone drain power from batter when it is charging it?
2. Does the phone drain power from the batter AFTER it's 100% charged, and is still connected to the charger/USB?
cheers
Lucas
1. yes, you can drain your battery while it is charging if the charger is weak and your phone is under heavy usage
2. yes, because to improve battery life, the charger will let the battery go from 100 to 9X something, then begin charging again. (Same for laptops)
Hi Dark3n and thanks for your response.
Dark3n said:
1. yes, you can drain your battery while it is charging if the charger is weak and your phone is under heavy usage
Click to expand...
Click to collapse
What do you mean "charger is weak"?
2. yes, because to improve battery life, the charger will let the battery go from 100 to 9X something, then begin charging again. (Same for laptops)
Click to expand...
Click to collapse
?? Are you positive about this?
I mean, improving the battery life is charging it to 100%, and then not draining power from it, if it has an option to drain power from outside source.
ps. I have Dell Inspiron 6400, and it does not drain power from battery when fully charged and still connected to the AC outlet.
cheers
lukair1983 said:
Hi Dark3n and thanks for your response.
What do you mean "charger is weak"?
Click to expand...
Click to collapse
A good charger will offer something about 500mA+ of current, a weak one less.
If the current of the charger is not higher than what the phone currently drains, the battery will not becharged.
lukair1983 said:
?? Are you positive about this?
I mean, improving the battery life is charging it to 100%, and then not draining power from it, if it has an option to drain power from outside source.
ps. I have Dell Inspiron 6400, and it does not drain power from battery when fully charged and still connected to the AC outlet.
Click to expand...
Click to collapse
I'm not 100% sure, but fairly sure.
Also improving battery life would be to never charge till 100%.
Interesting article:
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Dark3n said:
I'm not 100% sure, but fairly sure.
Also improving battery life would be to never charge till 100%.
Click to expand...
Click to collapse
I see. But if that was the case wouldn't Samsung doing the worst thing possible to the battery inside it's own phones?
Try to follow the logic(if the phone was constantly draining the power from the battery):
The phone is charging. It reaches 100% (so according to your article it's not good), then once it reaches, it can't go beyond that, but since the phone is taking power from the battery, the batter instantly goes below 100%, but then the charger tries to charge it back to 100%. So it's not only charging it to 100%, but it's doing it CONSTANTLY as long as the charger is connected to the phone.
If either of those information was true, Samsung would just conciously damage it's own product.
...
I contacted the Samsung Live Chat just now, and samsung employee told me this:
"P.: The phone takes power from the charger/USB when charging."
"P.: Yes, I am sure. All the phones takes power from charger/USB while charging."
"P.: Yes, you are right. The phone does not drain power if it is still connected to charger."
Any answer to that guys?
I have gone through about 3 cycles if battery, with fast charging turned on. Battery life has not been good, especially with screen off drain. Getting about 3hrs SOT while I've heard people say theu get around 6.
So my question is how many cycles should I go through before I judge battery? And should I disable fast charging? Does fast charging damage the battery?
I have the verizon US variant, so there isn't much I can do to improve battery life without root...
Thanks
Turn fast charge off. Turn off AOD. I have an AT&T model. Helped my battery immensely....
I can go the entire day, 6am to 11pm, with average usage and have about 40% battery left. VR drains my battery like butter on a stove.
gleggie said:
I have gone through about 3 cycles if battery, with fast charging turned on. Battery life has not been good, especially with screen off drain. Getting about 3hrs SOT while I've heard people say theu get around 6.
So my question is how many cycles should I go through before I judge battery? And should I disable fast charging? Does fast charging damage the battery?
I have the verizon US variant, so there isn't much I can do to improve battery life without root...
Thanks
Click to expand...
Click to collapse
I'm also on VZW and I've had my S7 for a week. After about 3 days of poor battery life (~2hrs SOT), I turned AOD, location, BT, and NFC off, and disabled a bunch of bloatware (I posted what I did in the battery thread). That improved my SOT to over 4 hours +more standby time. I've since re-enabled BT and location and haven't noticed a difference. I left fast charge on but I use a slow charger at night, just because that's what's plugged up behind my bed.
Sorry, I don't have a source but I'm pretty sure I read something credible that said fast charging doesn't affect battery life/quality. I know that's pretty flaky, so take if with a grain of salt because plenty of other people are saying it helps.
TehPirate_ said:
I can go the entire day, 6am to 11pm, with average usage and have about 40% battery left. VR drains my battery like butter on a stove.
Click to expand...
Click to collapse
How Is this even possible?? Do u have aod on? I need immensity help
I too have some similar questions just like @gleggie has posted
"how many cycles should I go through before I judge battery? And should I disable fast charging? Does fast charging damage the battery?"
Also how to measure battery cycles? Any credible app for the same?
Fast charge doesn't affect battery life immediately, charging your phone faster causes heating and overworking of battery, so slowly, average battery life decreases.
Slow charge when possible! (Wireless charge generally heats more than wall charge!)
... My 2 cents
My phone on fast charging, even wireless doesn't get any hotter than previous phones. My other half has a HTC One M8 for two years and still gets 5-6 hours SOT and has fast charged since day one.
I use fast wireless charging and get 6 hours SOT.
All I turned off is NFC, and my signal is usually full.
amedeonofal said:
Fast charge doesn't affect battery life immediately, charging your phone faster causes heating and overworking of battery, so slowly, average battery life decreases.
Slow charge when possible! (Wireless charge generally heats more than wall charge!)
... My 2 cents
Click to expand...
Click to collapse
So, to slow charge a S7, do we have to turn off fast charging from the settings and then charge via the charger that came with the phone(the so called fast charger) or should we use a charger from an old phone say SIII etc.?
Does this hold true for Motorola's phone also which have turbo charging option?
Also how to measure battery cycles? Any credible app for the same?
Just turning off fast charge you do a lot good for your mobile..
One thing you can do is check battery temperature as you change charger or method. I don't know about Motorola, but maybe its battery is user replaceable... I personally don't know any app that keeps track of battery temperature
billubakra said:
Also how to measure battery cycles?
Click to expand...
Click to collapse
On Exynos you can find it in
sys/class/power_supply/battery/battery_cycle
Edit:
Even better, try my new app
https://forum.xda-developers.com/an...ge-monitor-t3555496/post71003358#post71003358
amedeonofal said:
Just turning off fast charge you do a lot good for your mobile..
One thing you can do is check battery temperature as you change charger or method. I don't know about Motorola, but maybe its battery is user replaceable... I personally don't know any app that keeps track of battery temperature
Click to expand...
Click to collapse
Thanks dear. I have turned off fast charge, should I now charge via the charger that came with the phone(the so called fast charger) or should we use a charger from an old phone say SIII etc.?
Moto G's battery is not user replaceable.
waterdaan said:
On Exynos you can find it in
sys/class/power_supply/battery/battery_cycle
Edit:
Even better, try my new app
https://forum.xda-developers.com/an...ge-monitor-t3555496/post71003358#post71003358
Click to expand...
Click to collapse
Thanks for replying. I wasn't able to find any battery cycle file/log in that location, quite strange. And yes I have the Exynos version. I will test your app and will get back to you.
Of the little what I have understood from various threads here is to charge the battery when it is between 20-40% to 80-90% if you want to have a good battery life. I used to do the complete opposite charge, when the battery is at say 6-7% and charge it till it is maxed. I used to do the same for my laptop, any other tip for the battery?
billubakra said:
Thanks for replying. I wasn't able to find any battery cycle file/log in that location, quite strange. And yes I have the Exynos version. I will test your app and will get back to you.
Click to expand...
Click to collapse
In my app you'll be able to see it, when you turn on
Show sys/class/power_supply in the settings.
As you can see in the screenshot, mine is 52.
sys/class/power_supply/battery
waterdaan said:
In my app you'll be able to see it, when you turn on
Show sys/class/power_supply in the settings.
As you can see in the screenshot, mine is 52.
sys/class/power_supply/battery
Click to expand...
Click to collapse
How to turn on Show sys/class/power_supply in the settings?
billubakra said:
How to turn on Show sys/class/power_supply in the settings?
Click to expand...
Click to collapse
No problem, I've answered in the app thread
https://forum.xda-developers.com/showpost.php?p=71010017&postcount=5
Stated capacity on every website I can find is 3,000mAh, but Ampere and Kernel Adiutor both say 3,900. Anyone know why? I don't have the Pro, just the plain old 8.
Yeah, it is 3000. Softwares just mess it up.
Days Tech said:
Yeah, it is 3000. Softwares just mess it up.
Click to expand...
Click to collapse
Using system panel to monitor the battery life. It also shows 3900 mah. Is there any way to fix this?
Try the app again at 100% charge both plugged in and disconnected. How i fixed it in both ampere and accu battery.
flyinghighaero said:
Try the app again at 100% charge both plugged in and disconnected. How i fixed it in both ampere and accu battery.
Click to expand...
Click to collapse
Charged the phone to 100% while running the app in the background. Cleared app data. Restarted the app while being charged and also after disconnecting the charger. Still 3900. Tried Ampere, also showing 3900. Can u pls explain the process u followed a bit more?