Tank Fully Automatic Onboard Battery Charger, 1.5 Amps, Replacement For SE-1-12 Fully Automatic Onboard 1.5amp Maintainer/Charger 2 YEAR WARRANTY Designed to maintain 12v batteries up to 200ah Powers on when needed, Powers off when battery is fully charged or Topped off. CHARGER/MAINTAINER Input Voltage: 120V AC,60Hz ; Output Voltage:12V DC; Charging current:1.5amp; Charging/boosting all 12V/2-15Ah LEAD-ACID batteries and maintain up to 250Ah batteries; Reverse polarity,Overcharge and Short circuit protection; LED power and charging indicators;