I heard that the iPhone can only be charged 300 times and then the battery dies. Is that true?
No. Lithium-ion batteries are good for 300 to 500 charge/discharge cycles. Some interpret this as meaning that if an iPhone is charged daily, it could need a new battery in as little as 300 days. That is incorrect. First, a partial charge does not represent a full charge/discharge cycle. For example, if an iPhone’s battery level is at 75% and it is charged, that can be thought to account for a quarter of a single discharge cycle. Second, a lithium ion battery gradually degrades; it will not simply stop functioning after a certain number of cycles. Apple’s official position is that the battery will retain 80% of its life after 300 to 400 cycles. After a certain point, some customers may begin to feel it is time to consider to change iPod battery. However, for many customers, that time will not come for at least two years or more, at which point many customers will already have purchased a new handset. For others, iPod replacement battery options are available. Q: When will more detailed
