PowerSkin for Apple iPhone 4 (AT&T and Verizon)
$79.95 US
PowerSkin

Apple’s iPhone 4 has more battery life than its predecessors, but for many people, more is never enough. PowerSkin for iPhone 4 is a case-cum-battery that will provide lots more juice, as well as protect your precious iPhone. The Weeks Division of MyMac Labs took one out for several days of test-driving. Here’s what we found.

PowerSkin’s statistics are impressive. For your $79.95, you get an external battery with 2100 mAH (milli amp-hours) of capacity. So what’s 2100 mAH going to do for you? The iPhone 4 internal is 1400 mAH. The PowerSkin’s 2100 give you 50% more power IN ADDITION to the internal battery! The unit has an On/Off button on the bottom of the case, giving you the option to use the PowerSkin to recharge a depleted internal battery, or to leave it on, and have it keep internal battery charged until the PowerSkin is depleted.

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