Frequently asked questions.

PowerSol is a Southern-African distributor of technical power, energy and electrical components for the marine and mobile (overland) industries, supplying boatbuilders, installers and dealers.

PowerSol sells B2B to boatbuilders, installers and dealers. End users can access PowerSol products through the dealer network — see Where to Buy.

PowerSol is based in Cape Town, South Africa, and serves customers across Southern Africa.

LFP chemistry offers high usable capacity, strong charge acceptance and tolerance of deep, repeated cycling — the pattern of life at anchor where you draw down overnight and recharge by day. That generally means more genuinely usable energy for a given weight and space than lead-acid, and it pairs well with solar and alternator charging. It must be installed with an appropriate battery management system and protection to stay safe and reach its service life.

For many leisure vessels, yes. With a suitably sized lithium bank, solar and where appropriate wind charging, and efficient comfort systems, you can keep lighting, refrigeration, water and electronics running silently for extended periods. The achievable duration depends on your loads, your charging capacity and your cruising area, which is exactly what a properly specified system is designed around. PowerSol can help match capacity and charging to your usage pattern.

That is the point of how we select them. Energy storage, charging, distribution, monitoring and comfort systems are chosen to integrate cleanly — for example via shared standards and protocols — so the result behaves as a coherent system rather than a collection of parts. This matters most on refits, where existing hardware has to be accommodated alongside new components.

Start with an honest audit of your loads at anchor and how you cruise, because that drives bank size and charging strategy. From there, decide whether you are upgrading the house bank, adding solar, improving charging, or installing comfort systems such as watermaking or stabilisation. PowerSol can advise on specifying components that fit your vessel and existing systems while following recognised marine installation practice.

The driver is uptime and accountability. Commercial vessels carry passengers, fulfil contracts or operate under survey, so systems are built with redundancy, certified components and thorough monitoring rather than to a recreational budget. A failure has operational, financial and safety consequences, which justifies the additional engineering.

PowerSol carries Victron Energy and MG Energy Systems for energy storage and power conversion, Carling Technologies and MPower for switching and protection, Maretron and Wema for monitoring and sensing, Sleipner for manoeuvring, and Marinco for shore power and connection hardware. These are specified together to form coherent, serviceable systems.

Yes. We work with installers and boatbuilders to specify components suited to ABYC and equivalent marine electrical practice, covering conductor protection, ignition protection and galvanic isolation. The aim is an installation that is clean, well documented and straightforward to certify.

Continuous monitoring over an NMEA 2000 network surfaces developing faults, such as a failing battery or rising temperature, before they cause a failure on the water. It also provides the data and records that support planned maintenance and, where relevant, fleet-wide oversight from shore.

LFP stores more usable energy for a given weight and volume, tolerates frequent deep cycling, and accepts faster charging — all of which suit a payload-limited vehicle that needs to recharge in a day's drive or a few hours of sun. The trade-off is a higher upfront cost and the need for correct charging and protection, which is why DC-DC chargers, suitable solar controllers and battery monitoring are part of the same conversation.

Yes, through a DC-DC charger. It draws controlled current from the alternator and delivers a charge profile suited to the lithium bank, rather than connecting the battery directly. This protects both the bank and the vehicle's charging system and means ordinary travel days contribute usefully to your stored energy.

It depends on your loads, battery capacity and how much you can recharge from solar and driving. The realistic answer is qualitative: a system whose storage and layered charging are matched to actual consumption can support extended off-grid use, while one charging source alone is rarely enough for weeks out. Sizing the system around your specific usage is the way to set a dependable figure.

PowerSol distributes the technical components — lithium batteries, DC-DC and solar charging, monitoring, protection and related equipment — and supports boatbuilders, installers and dealers across Southern Africa in specifying them as an integrated system. The right combination depends on the vehicle, the loads and how far off-grid you intend to go.

An inverter converts DC battery power into AC for mains-style appliances. A battery charger does the opposite, using shore or generator AC to recharge the bank. An inverter/charger combines both in one unit and usually adds transfer switching, so loads pass between shore power and battery without a separate changeover.

Yes. Built-in safeguards protect the device, while DC distribution fuses and breakers protect the cabling and the wider system against fault current. Over-current protection should be sized to the conductor and positioned in line with recognised practice such as ABYC guidance, independent of any onboard electronics.

Only if the charger supports the chemistry and is configured for it. LFP and lead-acid need different charge voltages and profiles, so the charger must be matched to the bank. Using the wrong profile reduces capacity, shortens life and, in some cases, prevents proper charging altogether.

The principles are shared, but the hardware should suit the environment. Marine shore power typically calls for higher ingress protection, corrosion resistance and locking connectors against damp and salt, whereas overland rigs prioritise vibration and dust resistance. In all cases confirm voltage, frequency and amperage match the onboard AC system.

A DC-DC converter changes voltage to supply equipment that runs at a different nominal voltage from the battery. A battery-to-battery charger also converts voltage, but its job is to charge a battery bank with a controlled, multi-stage profile from a source such as an alternator or a second bank. In short: a converter feeds loads, a B2B charger charges a battery.

An external alternator regulator is worth considering when the standard automotive regulation does not suit your bank — most commonly when charging a lithium (LFP) bank, or when you want higher sustained output to a controlled profile. It lets the alternator follow a defined charge curve and respect the bank's limits. For modest lead-acid systems the standard regulation is often adequate.

No. A battery management system protects and monitors a battery bank — it is one part of the power management layer. Power management also includes the converters, B2B chargers, regulators and digital switching that move and control energy around the system. On a well-designed installation the BMS and these other devices are configured to work together to a common set of limits.

Often yes at a basic electrical level, provided their voltage limits and charge profiles are configured to agree. Deeper coordination — where a BMS instructs charging sources to back off, or devices share monitoring data — depends on a common communications protocol. Confirm protocol compatibility before specifying a mixed system, or select from families designed to interoperate.

It depends on your loads and how you use the vessel or vehicle. Solar is the usual foundation for steady daytime charging. A high-output alternator suits installations with regular engine running, giving fast bulk recharge. Wind adds output at night and in overcast, windy conditions. Many off-grid systems combine two or all three so the sources cover each other's gaps; lighter loads may be met by one alone.

An MPPT (maximum power point tracking) controller continuously finds the array's optimum operating point and converts excess panel voltage into additional charging current, rather than simply clamping the panels to battery voltage. The benefit is largest in cooler temperatures, partial shade and where array voltage sits well above the battery, so it typically harvests more energy from the same panels than a simpler PWM regulator.

A standard internal regulator holds a fixed voltage and is not designed for large auxiliary banks, especially LFP. A multi-stage external regulator manages bulk, absorption and float phases to fill the bank correctly and, with temperature sensing, protects both alternator and battery from overheating during sustained high-output charging. This is important for lithium banks, which can draw an alternator hard if charging is left unregulated.

Yes, provided each source follows the correct charge profile and respects the battery's voltage and temperature limits. LFP banks are less tolerant of incorrect charging than lead-acid, so MPPT controllers and alternator regulators must be set to the right parameters and ideally use temperature sensing. Specifying compatible, integrated components is the safest approach — confirm chemistry compatibility for every source during system design.

It is a reverse-osmosis desalinator that reclaims pressure from the brine being discharged and returns that energy to the feed side, reducing the power needed to produce each litre. On battery, solar or sail-powered platforms this means more water for the same draw on the bank, which is often the deciding factor on off-grid and long-range vessels and vehicles.

Output depends on the unit chosen and on operating conditions. Membrane production varies with feed-water temperature and salinity, so a given watermaker yields more in warm tropical water than in cold. Size the system to your estimated daily consumption plus a margin, and confirm expected output against the specific model and your intended cruising area.

Yes. Watermaker product water is low in dissolved solids but treatment still has a role for taste, stored-water management and biological safety, and any vessel or vehicle also carries tank or shore water that needs protection. A complete system pairs RO production with appropriate filtration and disinfection across all sources.

The main tasks are regular pre-filter changes, fresh-water flushing of the membrane, membrane care or replacement over time, and servicing of the high-pressure pump. Keeping the intake clean and following the manufacturer's flush and lay-up routine is the single biggest factor in membrane life, so plan the installation so these jobs are easy to do.

Navigation lights are selected by vessel length and type, because collision regulations define the required light sectors, arcs and visibility ranges for each class of craft. Confirm the applicable requirements for your vessel first, then specify fixtures that meet them. Treat it as a compliance requirement rather than a matter of appearance.

On most vessels and overland builds, lighting runs off a battery system with limited capacity, often for long periods when the engine is off. Because lighting competes with refrigeration, electronics and other loads, low current draw directly affects how long the system lasts between charges. LED fixtures help, but the total load across interior, deck and underwater lighting still needs to be budgeted against your battery and charging capacity.

Underwater lighting is engineered for constant immersion, so sealing, corrosion-resistant materials and thermal management are the priorities, alongside light output. The fixture has to dissipate heat into the surrounding water and resist long-term exposure to it. Specify underwater lighting separately from above-water fixtures, since the requirements are quite different.

Yes. Dimming preserves night vision and reduces draw, and lighting can be integrated with the vessel's switching, including digital control systems that allow scenes and zones. The key is to decide on the control approach before cable is run, because adding control later to fixtures that were not wired for it is more difficult and costly than designing it in from the start.

NMEA 2000 is a standardised network protocol that lets sensors, displays and devices from different manufacturers exchange data on a single backbone cable. It matters because it allows you to combine battery monitors, tank senders, instrumentation and displays — potentially from different brands — into one coherent system instead of isolated gauges.

Monitoring is about visibility — battery monitors, level sensors and instrumentation report what each system is doing. Digital switching is about control — it commands outputs over the network so you can operate circuits remotely, dim lighting, build scenes and add conditional logic such as automatic load-shedding. Many builds use both together.

Devices that speak NMEA 2000 are designed to share data on a common bus, so components from different manufacturers can generally coexist. The key is confirming each device's compatibility and configuring the network correctly. We recommend checking the intended combination before purchase so the system behaves as expected.

Yes. The same monitoring and control components are widely used in mobile and overland applications, where multiple subsystems, limited space and weight constraints make a single unified interface particularly valuable. The selection logic — standard, monitoring versus control, and remote access — is the same.