My friend has a Dell laptop (we are taking bets about when it will explode!:bomb: ) anyway, he has this li-po battery pack that plugs in under his laptop, ant the thing gives him like 6 hours of battery life!). It has the same dimensions as the laptop, kind of like the laptop is sitting on a book.

Do they make an external battery pack like that for the Powerbook G4?(I have a 12-inch)