SolarOak 155Wh/42,000mAh Portable Generator Power Supply Solar Energy Storage Lithium ion Battery is silent and zero-emissions electric generator. it is a gas-free generator with a pure dual modified sine wave output to efficiently power up your lights, cellphones, tablets, appliances or electronic devices without overload.It adopts 42000mAh high quality battery, featured with long lifespan, high temperature resistance, slim …