4-Stage Purification system that will produce 100% DeIonized spot free water. Simply connect to a water source and your ready to go. System uses a sediment filter, carbon filter, DI Cartridge, and a reverse osmosis membrane. 100 PSI Pump, 12 DC 75 AH Gel Battery 10 hours runtime and 5 hours charging. With converter adaptor from 220V to 12V, it can be used with electric power as well.