The simple fact of the matter is that I need an external battery for my iPhone in order to keep up with a whole day of window shopping with my wife. When she shops, I surf, and the iPhone’s built-in battery simply isn’t built for such gruesome task.
There are a few external batteries out there that support iPhone 3G, but my requirements are more strict. Ideally, the battery must:
- Charge via the original iPhone/iPod FireWire-capable connector. Refer to next point to see why this is important.
- Act as a pass-through and allow music playback when connected to my car’s iPod connectivity feature.
- Able to connect to and charge the iPhone in its protective case.
- When charging, charge the iPhone before the external battery. Current batteries on the market already has this feature.
- Last but not least, provide a few hours of extra online time.
Nothing in the market right now meets the above requirements, unfortunately. Here are some of the products I have seen:
- iPhoneck
- iPhone Portable Power Station
- iPhone 3G Charge Converter - Not a battery per se but allows charging via FireWire-capable connectors.
- Mini Battery Pack and Charger for iPhone and iPod
- Richard Solo Backup Battery for iPhone / iPod
- Morphie Juice Pack

