... , High efficiency 3, Constant Voltage and Limited Current Technology4, Universal input voltage 100~260V, compatible with ... 110V and 220V systems5, Full Protection: Output Over-current, Output Low Voltage, Short Circuit, Battery Reverse Connection ... .7ASurge Current90AOutput Floating voltage 13.8V+/-0.3V27.5V+/-0.3VCharging current (max)15A20A15A20AEfficiencyOver 80%Protection Reversed polarityOutput ...