7 of 8 people found the following review helpful
Great for festivals!,
This review is from: Digital Additions® Portable Power Supply & Battery Extender Charger for Apple iPhone 3G 3GS, 4, 4S, iPod, iPod Touch, Nano + any iPod with a standard Dock Connector Port) (Electronics)
Tried some other portable chargers but they didn't work on the iPhone 4. Took this to Glastonbury and was great. Was able to put it in my pocket charging whilst out and about. Would recommend .