For Lithium Batteries Only Fully Automatic On-board 5amp Maintainer/ChargerCharge Up To 2 Batteries At OnceIncludes x2 Alligator Clamps + x2 Eyelet terminalsDesigned to maintain 12V LiFePO4 batteries Powers on when neededPowers off when battery is fully charged or Topped off CHARGER/MAINTAINERInput Voltage: 105-125V AC 60Hz Output Voltage: 14.4V Charging current: 5amp Charging/boosting all 12V LiFePO4 batteries and maintain2 Charging PortsOvercharge and Short circuit protectionLED power and charging indicators