Mastervolt Mass 24/75 Battery Charger . Even under extreme conditions, Mastervolt's Mass battery chargers operate faultlessly; round-the-clock output when necessary. MTBF of 280,000 hours at full capacity & 24/7 use. *DNV & Lloyds certification . Nominal output voltage: 24V, Total charge current: 15 Amp. Nominal input voltage: 230 V (180-265 V), 50/60 Hz . Dimensions: 16.5 x 12.5 x 5.1 inch . Part number : 40020756