1, Power Inverter 2, Pure sine wave 3, With charger inside 4, Battery ... equipment, test equipment, and etc.Description:EPSI Series Inverter provides pure sine wave power for commercial, household and industrial applications. Capacity ... DC48V DCCharge Voltage13.8V±0.5V13.8V±0.5V27.6V±0.5V27.6V±0.5V55V±1VLow Battery Voltage Limit 11V ±0.5V ... 21.908.409.5013.2017.20 1000VA Pure Sine Wave Power Inverter