This is for all of you iPhone users looking to extend your battery life. You can get an i-On Extended Battery Stick for iPhone 4/4S for only $12.99 (reg. $61.59). Shipping is $2.99. The i-On extended battery stick is good for the iPhone 4, 4S, and the iPod. It boosts battery reserves by up 100% at up to twice the speed of outlet adapters.
This slim, ergonomic rechargeable 1400mAh battery stick is made by an Apple-certified manufacturer. There is a limit of 3 per person so you can get some as gifts. The deal is only good for the next 2 days.