Friends, for X-mas my mom gave me one of those portable generator like battery power packs for jumping cars or plugging AC devices into. It is a 600 watt unit with jumper cables, air compressor, work light, two AC plugs. She gave it me because last month my car battery went dead and no one would give me a jump because all those I asked were in too big a hurry. Mom thought it would be good to have in the car for emergencies.
So, dose anyone have any experience with those units, do they work, what problems should I look out for? It seems like a very handy device.