Kent Ro super plus is one of the best water purifires . Is has four filters and a built in mini water pump . It’s tank has a capacity of about 8 liters and it takes about 30-45 minuts to fill the tank properly . It’s also a energy efficient water purifire it works on dc current it has a built in transformer . It will not put a heavy load in your invertor . Ken’t service is also very good . It’s not the world’s best water purifire but it’s one of them . I surely recommend it . It will mantain the highjeen for the health of your family .