Specifications:Model Number AE1000Application 12V SLI/VRLA/GEL/AGM, CAL/CAL & SPIRAL BatteriesChange 1.2 AmpCurrentVoltmeter 1.5 V ~ 30VIndicators 3 LEDs (Red, Yellow, Green)Features Microprocessor Controlled 3-Stage Charging & Maintain Batteries Simultaneously Auto-Polarity, Spark Free & Over-Charging Protection Optimizes Battery Performance & LongevityEfficiency CEC/DOE RatedStandard Dimension Approx. (L) 137 x (W) 74 x (H) 49 mmIP Rating: