Battery Extender, No. SP2
Photo credit: Schumacher
Schumacher's Battery Extender, No. SP2, keeps batteries from decaying and fresh when exposed to long term KOEO draws. This fully automatic 1 amp charger and maintainer can detect if it is on a 6 or 12V battery and charge accordingly. It includes thermal runaway protection, safety start, LED indicators, 20' quick-disconnect harness and 50 amp-rated clamps.