A replacement Gtech SW04 charger for the Ni MH (nickel metal-hydride) battery-powered unit. Have you damaged your Gtech SW04 charger? Or maybe you just can't find it? There's no need to panic. Although we don't manufacture the Gtech SW04 anymore, we do still offer sweeper spares compatible with it. Our replacement charger for the SW04 means that you can ensure your unit remains charged & ready to give your home the Gtech sweeping treatment.