The complete 4Kva Inverter has an inbuilt charger, and also supplies power. It comes with 4x200AH deep cycle battery for optimal operation. The inverter indicates when battery is low and it automatically stops charging when the battery is full. It can power TV, fan, lights, dstv, Laptop, Fridge,Washing Machine and all electronics within 4000va. No fuel, no sound, no smoke, no servicing, no hidden cost. it helps a lot to reduce your petrol expenses. Once Procured and installed, you will enjoy uninterrupted power supply. It also comes with 8units of solar panels.