How many watts does the magsafe macbook charger draw?


[H]F Junkie
Jun 5, 2002
I got a nifty looking battery backup / charger for Christmas this year, and have used it to charge my blackberry while driving (normally use car charger, but I figure I would try this thing out).

Anyways, I was wondering how many watts the macbook magsafe charger draws, I know the output is 65 watts, but I would like to be able to charge my macbook with this backup/charger,

The max wattage on the pocket-power is 16 watts continuous or 20 watts for 5 minutes, Could I charge my macbook? or does it draw too much?