Collection: Production

Onboard power production: generating, regulating and distributing charge

Power production covers the equipment that charges batteries from the engine, solar panels, or coupling systems. The goal is not just to produce amps: it is also necessary to match the charge to the battery chemistry, limit losses, protect cables, and monitor the battery bank status.

Solar power production

Solar charge controllers convert the variable voltage from panels into usable charge for batteries. The Mastervolt SCM60 MPPT-MB solar charge controller covers MasterBus-oriented installations, while the SCM25 MPPT addresses more compact needs. Victron’s BlueSolar MPPT 150/45 and SmartSolar MPPT 250/60-MC4 represent MPPT ranges based on PV voltage, charge current, and connectivity.

Engine power production

The alternator remains the primary charging source whenever the engine is running. High-output models such as the Alpha Compact 28/150 Volvo Penta, the Alpha Compact 14/200 with Alpha Pro III, or the Alpha 12/130 III with Alpha Pro regulator must be selected with the correct regulator, pulley, and adequate ventilation.

Regulation, transmission and accessories

Reliable engine charging also depends on accessories. The Alpha Pro III charge regulator controls the charging curve, the alternator temperature sensor prevents overheating, and the multi-groove pulleys adapt belt transmission to the alternator.

Coupling and battery bank management

On boats with multiple batteries or engines, relays and charging clusters organize power flows between banks. The 714-140A-DVSR battery cluster, the 3-engine 4-bank DVSR 140 A cluster, and the 12/24 V 140 A digital VSR distribute charge and prevent unwanted feedback between banks.

Before sizing

Start with an electrical assessment: daily consumption, battery capacity, engine runtime, available solar area, system voltage, and wiring constraints. To refine your selection, consult the collections solar charge controllers, alternators, alternator accessories, pulleys, batteries, storage, and battery monitors.