The drill battery comment got me thinking. My Ryobi has a 4 amp hour 18 volt battery. 4 amps x 18 volts is 72 Watt hours. 72 x 3600 (# of seconds in a hour) is 259K joules (watt-seconds). That is about 2.5 times more energy than my jump starter.
If you made an adapter to connect some big wires with clips to your drill battery, you might have a jump starter for about free. That is if it can put out enough current fast enough. From the Power Tour comment, sounds like it is possible.
I am going to have to try this....l
