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Discussion in 'iPhone' started by Powrie, Sep 20, 2012.
Charge them all the way up to full.
Or drain the battery out then charge it.
I would say drain all the way first then 100% full charge without touching, but it probably doesn't matter these days
Charge up to full.
A Cycle is a cycle is a cycle is a cycle
This is what should be done but I'm pretty sure the vast majority won't, including me!
as an apple employee told me...
once you receive the iPhone, don't charge it, use it until it is no longer charged, and charge it back to 100% before using it again. drain the battery at least one time per month.
I have always heard this as well. Apparently it is supposed to help your battery last longer as always having it fully charged can do more harm than good.
apple employee doesnt know a damn thing. it doesnt matter with li-poly batteries.
All the old "memory effect" charging myths are related to old Ni-Cad batteries (nickel cadmium)
Modern Lithium Ion chemistry does not suffer from memory effects and doesn't need to be charged down to low states in order to get a good full charge later on.
Rules for Li-Ion
-Avoid letting your battery state go very low or dead for long periods of time... this is the most harmful state for Lithium Ion chemistry batteries. YOU ARE BETTER OFF IN THE LONG RUN IF YOU CAN CHARGE YOUR PHONE AS OFTEN AS POSSIBLE... DONT LET IT GET BELOW 30% IF POSSIBLE AND YOU WILL HAVE A LONGER LASTING BATTERY IN YOUR PHONE... SEE CHART:
DOD=Depth of Discharge
100% DoD 300 – 500 cycles
50% DoD 1,200 – 1,500 cycles
25% DoD 2,000 – 2,500 cycles
10% DoD 3,750 – 4,700 cycles
what this means is that if you fully deplete your battery (100% depth of discharge) you will only get 300-500 cycles,
if you only deplete your battery by half, you will get 1,500 cycles.
-Charge to 100%, but don't keep the phone at 100% either... Don't let it sit on the charger for much longer than it takes to get to 100%... (although this probably isn't necessary with the logic that apple puts into their charging products... It stops charging the battery automatically.)
-If turning the phone off or putting it in storage... keep in a cool place at about 40-70 percent charged..
-Never leave your phone in a hot car... worst thing for a battery
they do know something. he mentioned that it makes no difference, but that it's recommended to do that.
From what I've always heard, it doesn't have any impact on the battery's life/strength, but it will lead to more accurate battery meter readings.
that is correct.
it just calibrates slightly better. barely noticable, if at all.
This is what Apple has told me. Draining the phone before charging it fully will make the battery meter more accurate.
Lithium ion batteries have no memory. Totally not necessary. I charge mine every night regardless of how much or little it's used. Two years later and the battery is fine. Same with my MBP however, it is good to discharge occasionally, perhaps every couple of months.
I had a Genius Bar employee tell me just that a few months back when my sister was swapping out a phone.
Either he gave you the wrong info, or you heard wrongly. Anyway, you know now!