When should I charge my iPhone 4S should I wait till the battery goes completely flat or just charge it when it gives "20% Battery Remaining" message.
While going through couple of threads, came to know that few people say :-
"you should completely drain your battery once in each month"
whereas the other group of people believe :-
"this was required with older ni-cad or ni-mh batteries (like 10 years ago) to recalibrate. not required (and not recommended) with li-ion."
So what's the fact what does Apple say about it, does anyone know?
Here's what Apple says about the batteries > http://www.apple.com/batteries/
And here > http://www.apple.com/batteries/iphone.html
Note that at the bottom of the second link Apple says you should charge the battery to 100% and drain it completely once a month.
Hope that helps.
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