... m without derating1000...4000 m with derating3. FeaturesA) Charger: ABB Thyristor Power Converter, software Smart-Charger -2000 inside, with reversed discharging ... , long life, maintenance-free4. System Configuration:A) Charger: DCS800, ABB Thyristor Power Converter (German ABB original).B) Storage battery: Sealed lead ...