[T-Mobile Samsung Galaxy S II SGH-T989] RealPariah:
Well FYI, there is actually no way to FULLY discharge a battery UNLESS you left it without charging for days or weeks by fully discharging we mean until phone wont turn back on which leaves plenty of charge for a couple weeks still there. If battery EVER FULLY discharged you would need a special deep slow charger to revive it. You can trust I have been on computers and technically minded since I was VERY young [over 20+ years experience in computers and related devices]

Keep in mind Google engineers may not want to say admit there could ever be a battery issue that could be blamed on something like a stats file as that could open them to lawsuits since they do not disclose that at time of sale so sometimes what google may say on something while not an out right lie by any means will be shaded to benefit them every time [they have to make money can't blame them too much :) ] LLike they just got caught overriding browser privacy settings be exploiting an old loophole in cookie code so even if you said to deny google based cookies they were still getting all the tracking info they needed from you, or in UK [and here but under investigation] when they had the street cars for maps out and got caught gathering unencrypted wireless data to include passwords, emails, internet traffic, etc.] or how they just released that they are now spending 5 BILLION in lobbying in Washington up 5 fold from only a couple years ago. Not trying to say you cant listen to what they have to say just saying maybe you could investigate what they say just like you read my post and were not satisfied and went looking for information.

CORRECT, you wipe the statistics file SAVED ON THE DEVICE that saves your statistical information about your usage as battery charge changes [the file on the battery is actually just for dating, # of charge cycles, and current charge level you cant mess with that]. BUT, the statistics file ON the phone can be erased. By doing this you wipe away the files if they are corrupt OR have outdated information for say a differnt ROM with DIFFERENT usage conditions.

I already said you shouldn't do this everyday there is no gain from that, but if you say are home body and leave it plugged in all day everyday for a month and then go to go on a trip your battery will die too fast as the statistics Android is using are based on being plugged in all the time [NOT RECCOMENDED as again device chargers are fast chargers meaning they throttle between slow and fast charge and you DONT want the top 25% of a battery to be charged quickly as that can really hurt the battery and leaving it plugged in will increase the chances the charger accidentally throttles to fast during a time it should not as time goes on] so you would wipe those and have it restart stats while it is now being used off charger instead of on and that does and will get extra life [not more than the battery is physically capable of just the MAX it is capable of.

The only proof you need is to see when the phone shutsdown saying no more battery and then if you can boot it up and it says 10% left and stays running for another 15 min then the statistics are off and you can reset them to gain that time BACK instead of having the device shutdown earlier than it should have.

Dude I did not say this will give you more battery life than the battery is capable of, it is like chkdsk for your phone as you use NTFS it journals [albeit poorly and half ass] and should not suffer from corruption, BUT users who shutdown the machine incorrectly for instance will find when they run chkdsk on occasion they gain free space back due to errors caused by incorrect usage. The philosophy is the same here.

or EXT3 which is fully journalized should NEVER need to be checked yet they have e2fsck to fix errors due to corruption [again due to incorrect usage [ie forced power outtages that the FS can't account for] because even though it shouldn't happen in the real world nothing goes to plan.