Model T500 Portable Generator Built-in Battery Lithium ion batteries Battery Capacity 518Wh/140,000mAh,3.7V DC Output=2PCS DC12V-16.8V/10A Dimensions(LWH) 290 198 198mm NET.Weight About 6.8KG AC Output=1PCS/2PCS 110V/220V 500W ( Can be customized) Fully-Charged Time 6 hours Power Indicators LED Dispaly Operation Humidity 10%-90% Built-in Battery High Quality Lithium-ion Batteries Solar Panel Charging MPPT,12V-16.8V, up to 5A Max Input Lifecycle 500times Input/Charge DC18V/5A Operation Temperature -10 C-40 C