USB / Solar Powered 500mAh Battery Charger for iPhone 3G / 4 - Black

Pros: It is very small so you can bring it to everywhere and your friends will be very interested about this product.

Cons: The build quality should be better. The apple charger connector is riddiculus. I have to play with my genuine apple charger to start to charge the battery, because it doesn't fit. The solar panel is very small and it is not able to charge the battery, maybe if you leave it under the sun for a week it will be charged. So if you want to use it as an emergeny charger you have to charge it with your apple cable before you want to use it. But after it can charge your device maybe maximum 8-10%. I have an iPhone4 and the maximum was 9% of battery life.

Other: I am totally disappointed about this deal. It doesn't worth to buy, even for this small price.

Pros: For what you'll pay, it is a pretty cool little emergency charger. Probably your best bet is to charge it via USB and then leave it in the sun to maintain the charge. Sadly, solar technology is just not at a place where actually charging from the Sun is practical. You can easily plug your Apple 30 pin connecter into this battery and plug your phone into the other end of the battery, charging both at once. It charges my iPhone 4s just fine.

Cons: I wish solar technology was advanced to the point that this would charge faster in the Sun, but that is a matter of the state of the art more than of this particular product.

Other: Buy it. Smart phones are useless if the battery is empty.

Pros: Looks good Everybody will be interested in it Can be used as keychain Very light.

Cons: It is not very useful Don't count on it, it takes forever to charge and if you store it in a dark place you'll loose all the energy you've generated with it Looks a bit cheap Instructions are all in japanese.

Other: If you're curious about it and want to try, why not? I don't regret buying it. It is a nice different thing.