Battery Charger, when used in the standby application is not a standalone dedicated Battery Charger. Here battery charger along with a floating battery provides an uninterrupted DC power supply to a critical load. This is Float-cum-boost battery charger or FCBC that feeds the critical load without any break and also charges the discharged battery. Though FCBC denotes “Float-cum-Boost” which clearly means single rectifier/converter for AC to DC conversion. For additional details, please call 8368018797.