Most lipo chargers operate from a 12V DC power source, such as a car battery. For home use, you can get a separate DC power supply.

I've never used them, but both the [link=http://www.toddsmodels.com/Charger/DYN4053.htm]Vision Peak Ultra[/link] and the [link=http://www.hobbypeople.net/gallery/130116.asp]Watt-Age Charge It All[/link] are AC/DC chargers that use either 120VAC house current or a 12V power source.

There may be others.

- Jeff