... certificates of ICE61215, ISO9001, UL,VDE, TUV, CE and so on Model300W400W500W600W750WInputRated capacity(W)300W400W500W600W750WCommercial Power range(VAC)100/110/120 ... Sealed, maintenance-free lead acidRecharge current15A(Maximum)Battery protection Automatic self-test, discharge protection, over-charging protected, smart management system. AppearanceExternal ...