Duracell myGrid USB Charger extends Kindle life by 100 hours

Looking for a cure-all battery for your mobile gadgets? Duracell has introduced the myGrid USB Charger, a Lithium-ion rechargeable battery that is compatible with "virtually" anything that can be connected with a USB cable.

Also compatible with Duracell's myGrid charging pad, users can add extra juice to MP3 players, smartphones, portable gaming devices, and GPS systems, just to name a few items.

Some sample maximum times include:

• iPhone and BlackBerry smartphones: 4 extra hours
• Bluetooth headsets: 10 extra hours
• MP3 Players: 30 extra hours
• E-book readers (i.e. Amazon Kindle): 100 extra hours

The Duracell myGrid USB Charger is available now for $34.99.