Battery

The iPhone features a built-in rechargeable battery that is not intended to be user-replaceable, similar to existing iPods. If the battery prematurely reaches the end of its life time, the phone can be returned to Apple and replaced for free while still in warranty, one year at purchase and extended to two years with AppleCare. The cost of having Apple provide a new battery and replace it when the iPhone is out of warranty is US$79 and US$6.95 for shipping.

The battery is stated to be capable of providing up to seven hours of video, six hours of web browsing, or eight hours of talk time (depending on configuration). The battery life for music playing is stated to be 24 hours.[48] The battery also allows for up to 250 hours of standby time. Apple's site says that the battery life "is designed to retain up to 80% of its original capacity after 400 full charge and discharge cycles,"which turns out to be the same as for the iPod batteries. When the battery reaches only 80% capacity, it would be providing approximately 5.6 hours of video, 4.8 hours of web browsing, 6.4 hours of talk time, or 19.2 hours of music playing, depending on configuration.

The Foundation for Taxpayer and Consumer Rights, a consumer advocate group, has sent a complaint to Apple and AT&T over the fee that consumers have to pay to get the battery replaced.Though the battery replacement service and its pricing was not made known to buyers until the day the product was launched,a similar service had been well established for the iPods by Apple and various third party service providers.