Quote:
Originally Posted by Joe Matt
"A properly maintained iPhone battery is designed to retain up to 80% of its original capacity after 400 full charge and discharge cycles. You may choose to replace your battery when it no longer holds sufficient charge to meet your needs."
Difference between 80% and 0%.
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On the same topic...
Even though 400 recharges doesn't sound like that much, consider this. With 8 hrs talk time
or 6 hrs Internet
or 24 hours of audio playback per recharge, using your iPhone for 1-2 hours per day (mixed use) would result in needing to recharge the batteries about twice per week. With 52 weeks per year, that's 104 recharges per year.
Even if your iPhone will still retain 80% of its battery life after 400 recharges, that's almost
four years later.
Unless you are a extreme power user who watches a feature-length movie, browses the web for hours, and makes dozens upon dozens of calls
every day, your shouldn't have to worry about replacing your iPhone battery anytime soon.