iPhone Battery: Capacity
The capacity of an iPhone battery in both the 3G and 3Gs is defined as the amount of time the battery can sustain the iPhone. According to Apple, a full charged new or well maintained battery should yield roughly 5 hours of talk time on 3G or 12 hours of talk time on 2G, almost 30 hour of audio playback, or 300 hours in standby mode. The lithium ion batteries in the iPhone 3G and 3Gs are rated in mah (milliamp hours). The 3G battery is rated at 1150 mah and the 3Gs battery at 1200mah. The replacement batteries provided by uBreakiFix are rated for the same capacities.
Lithium Ion iPhone batteries should be kept at room temperature as often as possible. Extreme heat and cold can ruin a lithium ion battery. Avoid leaving your iPhone in a hot car or exposed to direct sunlight for too long as this overheating can severely limit the iPhone batteries capacity. The protection circuit built into the battery also helps guard against overheating. If for any reason the battery attempts to operate outside of a safe temperature range, the iPhone will display a temperature warning on the screen. The temperature warning is displayed below.
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