The Excel Series models CBHD1 and CBHD1-N are high frequency battery chargers suitable in a wide range of applications for recharging deep cycle flooded, gel and agm batteries. Using mosfets in a push-pull circuit they achieve an electrical efficiency greater than 85% in a compact package. Both current and voltage output are finely controlled regardless of AC input. Users can select from 4 different pre-programmed charging curves to suit a variety of lead-acid battery brands and types.