The Esprit Series of high frequency battery chargers use traditional wound transformers and transistors with digital controls. Both current and voltage output are finely controlled regardless of AC input. Users can select from among 11 different pre-programmed charging curves for lead acid batteries. Deep cycle flooded, gel, agm batteries as well as starting batteries can be optimally recharged. During recharge, status can be viewed on the display including current, voltage, recharge time, Ah capacity and kWh returned to the batteries.