Well, here's what an AT&T (corporate store) employee told me last night:
? Let your GS3 go
completely dead;
? Plug it in (to wall charger, not vehicle charger) and turn phone on as soon as it will turn on;
? Charge your GS3 (with it turned on) for 10 hours (e.g.- keeping it plugged in even though it reached a full charge after an hour or so);
? Unplug the GS3 ? turn GS3 off ? plug back in and charge it for 1 hour;
? Unplug the GS3 ? turn GS3 on ? plug back in and charge it for 1 hour;
? Total of: 12 hours!
. . he said that this method will 'properly re-calibrate the GS3's battery'. He claimed he read/saw this method on an XDA HTC forum, a few years ago, posted by an HTC Rep. He said that he used this method with his HTC Vivid, and that it should work equally as well with the GS3 ? since the HTC Vivid & GS3
both run on Lithium Ion batteries; the Vivid w/ 1620 mAh; the GS3 w/ 2100 mAh.
. . he also said that, in his opinion, vehicle chargers should "never be used", unless absolutely necessary, and then only briefly ?until enough of a charge exists? 'til the GS3 can be plugged back into the wall or a computer.
Any thoughts on this method?
I've been thinking the same thing recently. The AT&T guy I spoke with last night also said: 'when the GS3 gets to 100% charged . . it's really not 100%'.
And that it's best to leave it plugged-in some while longer (however long that is?) . . because it continues to get a 'small trickle' of a charge that brings it 'eventually up to a true 100%' . . 'due to the fact that when the GS3 initially shows 100%, it's false, and not really 100%.'
Any of that make any sense?