Specification: (A). Battery Channel:1-4 Channels (B). Battery Input:18V/20V -ion Battery, (C). DC Output:12V/5A ( Max 10A ) (D). USB Output: 2USB- A:5V/2.1A, 1Type-C: PD3.0,5~12V/18W (E). AC Output: Rated Power : Modified Sine Wave 300W, AC Voltage : 220-240V, Output Frequency : 50Hz/60Hz (F). LED Light: LED light (10W/6W ) adjustable, (G). Operating temperature: -10~ + 40 The product can insert 4 batteries at the same time , start the battery inserted into the channel first . If the channel # 1 battery is dead , it will automatically switch to the channel with battery : This product will have a 0.5s pause when channel is switching so it cannot charge any devices during this 0.5 second Low voltage protection (when it is not working, the battery voltage is generally too low, 15V, and the power is not enough, replace the fully battery in time), overload overcurrent protection (automatic power-off protection when exceeding the rated power of 300W), Short circuit protection. Battery selection: For 18V -ion battery: BAT609 BAT618 For 18V -ion battery: BL1830 BL1840 BL1850 For 18V -ion battery: 48-11-1890 48-11-1865 48-11-1880 For 20V -ion battery: DCB206 DCB609 DCB180 For 20V Skirting board (4 PIN interface ) -ion battery: WA3551 WA3553 For 20V -ion battery: CMCB202 CMCB204 Style: A2-For Color: Black Material: plastic Package Contents: 1 x inverter