This inverter can convert 21VDC power into 220VAC current, which is suitable for all kinds of outdoorwork and small home appliances. With an upgraded intelligent chip, over-temperature protecting, and constant temperature charging, safer to use. The inverter has built-in eight intelligent safety protections systems that can automatically distribute current and voltage to improve the safety of electricity. Suitable for all small appliances under 120 watts, such as cellphones, laptops, digital products, small fans, LED lights, etc. Features: Multi-function Inverter:This inverter can convert 21VDC power into 220VAC current, which is suitable for all kinds of outdoorwork and small home appliances. Intelligent Fastcharging:With dual motor design, it can realize fastcharging, which greatly improves charging efficiency. Safety Protections:With an upgraded intelligent chip, over-temperature protecting, and constant temperature charging, safer to use. The inverter has built-in eight intelligent safety protections systems that can automatically distribute current and voltage to improve the safety of electricity. Lightweight & Heat Sink Design:The inverter adopts a lightweight design, easy to carry and store, perfect for outdoor use. The convection heat sink design, even if charged for a long time, it will not heat up, ensuring the safety of use. Wide Applications:Suitable for all small appliances under 120 watts, such as cellphones, laptops, digital products, small fans, LED lights, etc. Applicable & Not Applicable Ranges: Direct Current Output Scope of Applications:Switching powersupply loads, cellphone chargers, notebook chargers, power tool chargers, lamp set-top boxes, LCD TVs, routers, WiFi, LED LCD monitors, DVDs, LED lights, ordinary bulbs, energy-saving lamps, ordinary non-temperature-regulating soldering irons and so on. AC Output Scope:High-frequency voltage circuits, voltage doublers, and rectifiers, resistive devices: ordinary light bulbs, soldering irons, electric blankets, etc. Not Applicable Appliances:Ironcore transformer class, such as the use of ironcore transformer audio, solenoid, solenoid valve, relay, and AC contactors. Temperature control soldering iron, dimming class. Specifications: Name: Lithium Battery Inverter Material: plastics Color & Model:Yellow For DeWalt, Red For Milwaukee, Blue For Makita, Green For Dayi (optional) Power: 120W (peakpower 300W) Input voltage: 18-28VDC Output voltage: 110/220 V (Output voltage follows the change of the input voltage.) Quiescent current: 0.05A USB: 27W orange (5V/3A, 9V/3A, 12 V/2A), 15W white (5V/3A) Voltage display: 5V-30V Package size: 105 * 100 * 67mm / 4.13 * 3.94 * 2.64in Package weight: 300g / 10.58ounce Packing List: 1 * Lithium Battery Inverter