- Aug 28, 2007
A.) It doesn't actually say that.http://www.techcrunch.com/2007/07/27/iphone-class-action-lawsuit/
it says that the battery dies after 300 charges, is that true?
I have to charge mine every night. I take if off the charger at 8am and it goes back on at 6pm when its dead or close. So I guess that gives me a bit under a year on the original battery.
No. What happened was that Apple posted this comment:it says that the battery dies after 300 charges, is that true?
While true, it's not terribly meaningful. Cycles are just a way of talking about its lifespan. Let's say the battery has a start-off life of 500 cycles.I was told that 300 charges meant 300 "Full" charges. So if you use only 50 percent of you battery in a day, then charge it ... you only used half of the one charge ... so you have 299.5 charges left. Thats apparently what the dude at Apple told me. I hope thats the case ...
There is already a built-in variation in the stated 300-400 charging cycles.While true, it's not terribly meaningful. Cycles are just a way of talking about its lifespan. Let's say the battery has a start-off life of 500 cycles.
Okay, but you live in a place where it's always hot, you put the phone in a case, the battery temperature is always well over 100F degrees, and you make a lot of calls and surf the web all day. You fully charge (cycle) the battery once a day.
After six months, you've only done 180 cycles, but the battery now only holds 65% charge and its life is down to 300 cycles, because of the usage and heat taking a toll.
So it's not a hard and fast number.
so you mean that if it doesn't charge past 50 percent i can get a new one under warranty?No. What happened was that Apple posted this comment:
"A properly maintained iPhone battery is designed to retain up to 80% of its original capacity at 400 full charge and discharge cycles. You may choose to replace your battery when it no longer holds sufficient charge to meet your needs."
This is typical Li-Ion battery status after a year, assuming you keep it charged, use it in an average manner, and keep it around 75 degrees or less. (Note that they say UP TO 80%, because if you use it more, charge it less, and/or especially let it run hot, then it could easily be down to 60% or less capacity after a year.)
In any case, people misread it as saying that after 400 cycles it was dead and must be replaced. As you can see, it says nothing of the sort. But people were not happy that Apple waited until many were in line at the stores before posting any info at all.
Apple, btw, considers 50% capacity to be the point where they give you a new battery under warranty.