applemood.com

www.mophie.com

This may be pricier than some iPhone 4 battery packs and doesn’t have the highest capacity either. But its 1500 mAh Battery, which took about three hours to charge, boosted our flat iPhone battery to 80% – again, in around three hours – as we listened to music. You charged it from your Mac via a micro USB lead. With the phone in the Mophie, both batteries charge and you can sync to iTunes. The case is robust and the rubberized coat means it won’t slide around. And thanks to a little switch, you can decide when to use your reserve power

Bottom Line : Not the cheapest or highest capacity, but it oozes quality and protects your phone too.