Power Management

Sterling Power

Marine and off-grid power distribution & charging.

Sterling Power is a manufacturer of marine and off-grid charging and power-distribution equipment. Its range covers mains battery chargers, battery-to-battery (B2B) chargers, alternator-to-battery chargers and alternator regulators — the components that move and condition charge between an engine, a shore-power supply and a vessel's or vehicle's battery banks. PowerSol carries Sterling Power for the leisure-marine, commercial-marine and overland markets across Southern Africa.

Sterling Power is known for charging electronics that take charge from imperfect or variable sources and deliver it to the battery at the profile the chemistry needs. Battery-to-battery and alternator-to-battery chargers let a standard engine alternator charge an auxiliary or house bank fully and safely, independent of the starter battery and without relying on the alternator's own regulation. This matters on modern installations where lithium (LFP) and other deep-cycle banks demand a controlled multi-stage charge that a fixed-voltage alternator cannot supply on its own.

The range is built for power management rather than a single function: mains chargers for shore or generator supply, B2B and alternator-based chargers for charging on the move, and alternator regulators for taking direct control of charge output. For an installer, that means the charging architecture of a boat or overland vehicle can be specified from one source — matching the charger type to how and where the system will actually be recharged, whether at the dock, off the engine, or from a secondary source while driving.

PowerSol supports the Sterling Power range with the technical context needed to specify it correctly for Southern-African conditions, where vessels and overland builds often run mixed charging sources and demanding deep-cycle banks. Equipment is held for the leisure-marine, commercial-marine and mobile-overland markets, so dealers, boatbuilders and installers can source charging and distribution components alongside the rest of a power system.

Why specify Sterling Power

  • Purpose-built for variable charge sources — alternator-to-battery and B2B chargers condition output from an engine or second battery instead of trusting fixed alternator regulation
  • Covers the full charging path: mains chargers for shore and generator power, on-the-move chargers for engine and secondary sources, and regulators for direct alternator control
  • Suited to deep-cycle and lithium (LFP) banks that require a controlled multi-stage charge a standard alternator cannot deliver alone
  • Distributed and supported locally by PowerSol for leisure-marine, commercial-marine and overland installations

Sterling Power — FAQs

What is the difference between a battery-to-battery charger and a simple split charger?

A battery-to-battery (B2B) charger takes power from one battery — typically the starter battery fed by the engine alternator — and re-regulates it into a full multi-stage charge for a second bank. Unlike a passive split charger or VSR, it can charge the auxiliary bank to a proper profile regardless of the source voltage, which is why it suits deep-cycle and lithium banks. Match the charger's capability to your bank chemistry and charging source.

Why use an alternator-to-battery charger or alternator regulator instead of the alternator's built-in regulation?

A standard alternator holds a fixed voltage that rarely matches what a deep-cycle or lithium bank needs to charge fully and safely. An alternator-to-battery charger or a Sterling Power alternator regulator takes control of the output and applies a controlled charge profile, so the bank is recharged properly from the engine. The right choice depends on your alternator, bank size and chemistry — confirm compatibility with PowerSol before specifying.

Is Sterling Power suitable for both marine and overland (mobile) installations?

Yes. PowerSol carries Sterling Power for leisure-marine, commercial-marine and mobile-overland use. The same charging principles apply across both — conditioning charge from shore power, an engine alternator or a secondary battery into a deep-cycle or lithium bank — so the range is specified on boats and overland vehicles alike. Select the charger type to suit how the system is recharged in service.