This 1000watts 12V Inverter has an inbuilt charger, and also supplies power. you will need to buy a deep cycle battery to work with your inverter. The inverter indicates when battery is low and it automatically stops charging when the battery is full. It can power a tv, fan, lights, dstv, laptop and phones. No fuel, no sound, no smoke, no servicing, no hidden cost. it helps alot to reduce your petrol and diesel expenses.