Description: Könner & Söhnen KS 48VS-DC is a petrol DC generator and backup charger for 50–55 V battery systems. It delivers 3.3 kW rated power and a maximum current of 60 A. In AUTO mode, the unit starts automatically when battery voltage drops below 50 V and stops at 54.5 ± 0.5 V when current is below 20 A. The model supports automatic and external control and features an LED display for output voltage and charging current, as well as a soundproof housing. A transport kit with a foldable handle and wheels facilitates moving the unit.