it's an unexpensive charger that's able to charge 12s lipo.
Thunder 1220 Professional Multifunction Lipo/Lilo/LiFe NiCd/MH Balance Charger
Operating voltage: DC 11~15 volts
Charge/discharge power: max. 300/40 Watts
NiCd/MH: 1~30 cells
LiIo/LiPo/LiFe: 1~12 series
Pb: 2~24V
Charge current: 0.1 to 20.0A
Discharge current: 0.1 to 5.0A
EXT.FUNCTION:
1.Display the battery resistance.
2.Display the resistance of the single cells.
3.Set the determinal values of the battery.
4. charge 2*6S battery simultaneously.
5.monitor the cells of battery autolly.
VIDEO : http://www.youtube.com/watch?feature=player_embedded&v=cP8-1pQ2nRg