Pure Sine Wave Inverter Capacity : 3500VA /36V Rated Power : 2800 W Supports 3 unit of 12V lead acid battery. To be purchased separately. Advanced LCD display shows Inverter battery performance statistics User selectable output voltage (200V-240V) and charging current (8A-21A) for optimized performance Low voltage battery charging begins from 95V and fast charging from 135V input supply Mains By pass switch for supplying output directly from grid in case of a fault in Inverter Supports all Battery types (Flat, Tubular and SMF) and all battery capacities (80Ah-220Ah) 24 Month Warranty