*2500W Pure Sinewave Inverter with a good power factor of 0.8. *It is a Single Phase Inverter with a VDC of 24V. *This means that it uses batteries in multiples of 2. *It has a robust inbuilt charger of 10-40A (adjustable/selectable) to adequately charge the battery. *This inbuilt charger can adequately charge a battery bank of up to 4pcs of 12V 200Ah batteries.