Last week, Milliamp Ltd announced a high-capacity battery replacement for the second generation iPhone 3G. To switch to a high capacity battery the chassis of your iPhone has to be opened, which is not authorized by Apple. If you don’t want your iPhone chassis to be opened then here is a simple solution to keep your iPhone 3G alive for longer.

While there are more and more on-the-go charger options, this Panasonic Pocket Power phone charger really caught my eye. To juice up your iPhone, all you have to do is put two AA batteries inside and plug in your iPhone, which then takes a few hours to retain a full charge. It can also work with an iPod Touch and many other devices as well. The Panasonic Pocket Power is lighter and more design-friendly than other iPhone chargers and the price tag’s not too bad: US$36.45.