This offer valid today only [7/26] until 12AM Eastern Time.
This is one fantastic deal on 3 backup batteries for your i device. Each battery holds 1900 mAH, more than enough to charge the iPhone 4S with only 1430 mAH. Combined, these three batteries can charge your iPhone four times, and all for $9.99 [$0 shipping].
Lithium Ion battery
Compatible with all iPhone, iPod Touch, & iPod Nano models
Compatible with iPod Classic 5G+, iPod Shuffle 3G+