i've just spent 2 hours researching whether a factory reset will help with battery problems with my GS3 (sprint) following 4.3. I know this upgrade is plagued by battery problems but mine are inconsistent. sometimes i get a normal day - others my battery will drop 20-30% in minutes after taking it off the charger. i thought it was a new (not oem) battery and the seller sent me another but the same issue with the new battery. in fact i get the same issue (super rapid drain as above) with any of the 4 batteries i have -- so i think that'd be pretty coincidental! Anyway - initially i found one article and only a couple posts stating that a factory reset will help this post 4.3 battery issue. what you guys think? i did a system cache wipe but still no better. i'm not rooted. but at this point may try anything! or do you think i just got another bum battery?? thanks!