Do this need to be done for phone to read battery stats correctly & can I do this without rooting?
FoxKat recommends to completely charge with phone off. Then run it until it says to charge (about 15%) and charge again with the phone off.
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Last edited by aaf709; 06-13-2012 at 11:46 AM.
Ive tried a few calibration apps with an extended battery 4000mh and to no success it wont calibrate. But I know now I can go around 30 hours or so on a full charge. Even after the first 6 hours it says 1% battery left
Calibration apps aren't going to give the metering system what it needs to determine the battery's maximum and minimum voltages so it can properly gauge what the interim levels are. You need to "show" the meter by letting it read those levels right from the battery.
Since every battery has a unique signature and unique maximum capacity the only way the charging system can possibly know is by witnessing the battery in action. The only way to do that is by charging to 100% with power off followed by discharging to 15% (10% with Jelly Bean). The subsequent charge to 100% confirms the full range to the meter and locks the range in its data store to recall from for future level calculations.
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Last edited by FoxKat; 06-22-2013 at 04:06 PM.
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I had a pretty accurate battery meter until I installed my new Motorola Extended Battery. I haven't been able to get a "good calibration" from the battery despite trying to calibrate the battery. I tried using the calibration tool and charged and discharged my phone and despite a month or so of use it still seems to jump around. Even tonight, if I look at my battery monitoring app the charge is slow and steady, then jumped 9% in 1 minute. Go figure. It's not that big of a deal(aside from the fact that I want it to be accurate) since the battery lasts so long that I haven't had the battery get critically low.
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I've done exactly what Foxkat says. I did alot of forum reading and stuff before I jumped into the realm of battery calibration. Still have an odd battery meter. I am rooted and I did use one of those "battery calibration" programs to wipe the old battery parameters. I can tell from using both of the batteries that my standard battery had a 100% charge of 4.351v and the extended is only 4.201v. So there are slight differences between batteries.
Anyway, I may try doing a calibration again just to see if I can get better luck the second time.