PowerCharger 12/20-3

The **PowerCharger 12/20-3** is a compact Mastervolt 12 V, 20 A marine battery charger with three outputs, sold in the USA. It uses high-frequency switch-mode technology and multi-stage charging for lead-acid, gel, AGM and spiral batteries. ## Key features - Charges up to 3 battery banks simultaneously with fully automatic multi-stage charging - Settings for lead-acid, gel, AGM or spiral batteries; built-in memory prevents overcharging - Universal input 90–265 V AC, 50/60 Hz; power factor corrected (> 0.98) - High-frequency switch-mode design: efficient and lightweight - Auxiliary power supply provides DC even without batteries connected and can revive a dead battery - Full charge current even from low-quality power; variable speed fans - Corrosion-resistant materials, easy-to-read display and captive screws - Protections: over-temperature shutdown, ignition protection, overload, surge and short circuit - Not compatible with MasterBus (use the ChargeMaster series for MasterBus systems) ## Technical data - Nominal output voltage: 12 V - Total charge current: 20 A; battery outlets: 3 - Recommended battery bank size: 50–250 Ah - Input: 120/230 V (50/60 Hz), 6.5 ft AC cable - Charge characteristic: IUoUo, automatic 3-step+ - Charge voltages: bulk 14.4 V, absorption 14.25 V (4 hours), float 13.25 V (wet) / 13.8 V (gel/AGM) - Temperature compensation: -22 mV/°C (-12 mV/°F) - Full load consumption (230 V AC): 420 W; DC-side consumption < 2 mA - Power factor: > 0.98 - Temperature range: -25 °C to +65 °C; natural cooling - Protection degree: IP23 - Display: LED - Alarm contact: via optional Multipurpose Contact Output (code 77030500) - Dimensions (h x w x d): 234 x 132 x 60 mm (9.2 x 5.2 x 2.4 in) - Weight: 1.8 kg (4.0 lb) ## Compliance CE, E-mark (95/54/EG), SAE J1171 (ISO 8846 ignition protected), ABYC A-31, UL 1236 including marine supplement, FCC Class B.