There are "jump boxes" that can be used for starting cars with dead batteries without needing a second car. Some of the larger models can run electrical equipment for a while. The big ones aren't cheap, but they are very useful to carry along with you for emergencies.

Otherwise, there are various sizes of "inverters" that can be connected to car batteries. They range in price and ability. They work best with deep-cycle marine batteries (or I should say, that type of battery isn't completely ruined after a being drained a few times).


Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris