http://www.tomshardware.com/reviews/notebook-battery-external-power-supply,2821.html


Interesting read

Neato. One discrepency I can find is around page 9 or 10 where they talk about the Apple Magsafe options.

Tekkeon delivers a cable using their 3pin DC out to Apple MagSafe that will charge the laptop as long as you feed it the appropriate amount (e.g. the higher 18/19v for the Powerbook units and 16v for the ibooks). I've never had a problem with mine. It's not cheap per se since they have to recycle old power strips to get the connector, but it does work and it's an official product.