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?
Is there a tool that reliably indicates the health of the battery in a rooted nexus 5?
I have Gsam battery monitor which is excellent at telling me what is using the battery, but how can I tell if the battery is getting old and needs to be replaced? Just timing how long it lasts has too many variables. Is there a tool that can check the battery health?
Dial *#*#4636#*#* on the phone.
AccuBattery estimates how many mahs your battery still has.
I guess it just interpolates charging current and battery voltage over time.
Hello. I've read some posts, tried some apps but never found what exactly I need. So there's a thing: let's say my phone's battery capacity is 2900mAh. Is there a way to calibrate my battery to put, let's say, 200mAh to reserve? So when the battery is charged to a 100%, it would actually be charged only to 2700mAh and would stop charging. This way battery would get less voltage that damages it and would have longer lifetime.
I know that I can download apps that notify me when battery is charged to wanted percentage, but it's not always the most comfortable choice on many occasions.
All the topics, apps about battery calibration are to calibrate 100% to 100%, when I actually want 80-90% to be shown as 100%.
I have a POCO F3 that I've purchased about a month and half ago. I've dialed the code *#*#6485#*#* to check my battery health by diving the current battery capacity for the factory battery capacity and then by multiplying that result by 100 and it was at 92.7%. Is it normal after about 6 weeks of use with the phone?
crazy_penguin said:
I have a POCO F3 that I've purchased about a month and half ago. I've dialed the code *#*#6485#*#* to check my battery health by diving the current battery capacity for the factory battery capacity and then by multiplying that result by 100 and it was at 92.7%. Is it normal after about 6 weeks of use with the phone?
Click to expand...
Click to collapse
Check what cpuz reports. To me that doesn't look normal, something is with the battery sensors. Have you installed any custom kernel or anything that might play with "Advanced Charge Control Interface" ?
LAST_krypton said:
Check what cpuz reports. To me that doesn't look normal, something is with the battery sensors. Have you installed any custom kernel or anything that might play with "Advanced Charge Control Interface" ?
Click to expand...
Click to collapse
What is cpuz? I haven't installed anything
LAST_krypton said:
Check what cpuz reports. To me that doesn't look normal, something is with the battery sensors. Have you installed any custom kernel or anything that might play with "Advanced Charge Control Interface" ?
Click to expand...
Click to collapse
Oh ok. It's an app. I've installed and this is what appears about my battery's info
@crazy_penguin
IMO you can't compute Battery health at your own - at least not the way you did it. And Android OS also can't.
Battery health - also called battery lifespan - simply tells you amount of time your battery can last until it needs to be replaced / fully recharged.
Battery health always is expressed as estimated time - in hours and minutes, not as percent of whatever.
More info here:
Battery Life Calculator: How Long Does A Battery Last? (Ah, V, Hours)
In our article discussing Ah (ampere-hours) and Wh (watt-hours), we got a ton of questions about the longevity of batteries. The question “How long does a battery last?” was a predominant one. To help everybody trying to calculate how long will a battery last, we have created a Battery Life...
learnmetrics.com
crazy_penguin said:
I have a POCO F3 that I've purchased about a month and half ago. I've dialed the code *#*#6485#*#* to check my battery health by diving the current battery capacity for the factory battery capacity and then by multiplying that result by 100 and it was at 92.7%. Is it normal after about 6 weeks of use with the phone?
Click to expand...
Click to collapse
It's not normal, in that period, it shouldn't decrease a full 2%. Sometimes, a malfunctioning OS may report false calculations.
On my old device, I used two different systems, they showed different calculations of battery health.
One OS showed ~68-67%, the other showed 76.4%. I don't trust calculations anyway.
Mohamedkam000 said:
It's not normal, in that period, it shouldn't decrease a full 2%. Sometimes, a malfunctioning OS may report false calculations.
On my old device, I used two different systems, they showed different calculations of battery health.
One OS showed ~68-67%, the other showed 76.4%. I don't trust calculations anyway.
Click to expand...
Click to collapse
Wipe cahce partiton or even do a factroy reset. If you have TWRP check what battery % it shows there.
jwoegerbauer said:
IMO you can't compute Battery health at your own. And Android OS also can't.
Battery health - also called battery lifespan - simply tells you amount of time your battery can last until it needs to be replaced.
Click to expand...
Click to collapse
Meh, stop worrying.
An Li useful life is about 200 full charge cycles (0-100%).
Partial midrange charging cycles (40-62%) can yield hundreds even thousands more full charge cycles to the battery's lifespan.
Estimate battery health by SOT and by drain reported overnight.
When your SOT dips much below 80% of it's new capacity, the Li is degraded and at the end of its usable lifespan.
Replace before it fails and damages the phone.
Any battery swelling in a failure.
Cell phone Li's hate high cell voltage, temperatures and high discharge rates.
Keep charge cycles between 40-72% to extend life.
Li's love frequent midrange power cycling.
Avoid discharging below 20% or constantly charging to 100%.
Minimum start charge temp is 72F, 82-92F is best. Low temp charging can cause Li plating.
Never attempt to charge a Li below 40F!!!
If battery temp is exceeding 100F use cooling.
Apps like Accubattery's history logging are useful is seeing actual battery discharge and charging times. Useful is spotting excessive battery drain.
Eventually the battery will need replacement. On a heavily used phone that's 1-2 years.
No big deal... just do it!
Always use a new OEM seal if the phone is watertight.
LAST_krypton said:
Wipe cahce partiton or even do a factroy reset. If you have TWRP check what battery % it shows there.
Click to expand...
Click to collapse
Oh don't worry, I never considered this a problem, phone was just fine in everything except at the health calculation.
I'm just showing the OP that maybe it has something to do with the OS.
LAST_krypton said:
Wipe cahce partiton or even do a factroy reset. If you have TWRP check what battery % it shows there.
Click to expand...
Click to collapse
how do I wipe cache?
Try discharging until it dies then charge to 100%
Repeat 2 more times to recalibrate the battery % indicator.
Not worth the trouble though...
blackhawk said:
Try discharging until it dies then charge to 100%
Repeat 2 more times to recalibrate the battery % indicator.
Not worth the trouble though...
Click to expand...
Click to collapse
so it's not worth doing it? I shouldn't worry about those 93%?
crazy_penguin said:
so it's not worth doing it? I shouldn't worry about those 93%?
Click to expand...
Click to collapse
As long it shutdown at 5% and charges to 100% there's nothing that should to be done.
A sudden capacity drop, erratic fast charging indicate a battery failure.
A swollen battery is a failure.
You have none of these symptoms.
it's fine, I agree
I don't think it's typical, what you use it for is dependent? Maybe if intensive video processing and tweaking, playing and watching live?
May Anyone ask how something functions, too? What could I get to learn about the quality and capability of your real battery?
Hello everybody,
I've been using the Accubattery for a few years now to measure battery health and sigh when it reaches 80% charge. However, I don't know if it really is a reliable app to measure battery health. A new phone purchased this week is showing 88% health.
There is Guru Battery too, but I don't know if it's reliable either.
Can anyone give an opinion?