Frequently asked questions.

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

PowerSol sells B2B to the OEMs of our marine and automotive markets, 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.

For most leisure vessels, yes. With a lithium bank sized to your overnight loads, solar (and wind where the anchorage suits it), and efficient fridges, lighting and electronics, you can run through the night and into the next day in silence. How long you can keep doing it depends on your loads, your charging capacity and where you cruise, and that is exactly what a properly specified system is designed around.

You get far more usable energy for the same weight and space, and the bank takes charge fast enough to refill in the hours of sun or engine running you actually have. It also tolerates the deep, repeated cycling that life at anchor puts a bank through. The trade-off is a higher upfront cost and the need to do it properly: LFP must be installed with a battery management system, correct protection and charging that respects its voltage and temperature limits.

The cost of failure. A private boat that runs out of power ends the weekend early. A charter, passenger or patrol vessel that runs out of power loses revenue, breaches its operating conditions or puts people at risk. That justifies redundancy, certified components and thorough monitoring that a recreational budget would not carry.

Yes. We work with installers and boatbuilders to specify components suited to ABYC and equivalent marine electrical practice, covering conductor protection, over-current protection, ignition protection and galvanic isolation. The compliance path itself belongs to the surveyor and the operator; our job is to make sure the components you fit are the ones that make it straightforward.

That is why they are the ones we carry. Storage, charging, distribution, monitoring and comfort systems are selected to integrate over shared standards and protocols, so the boat behaves as one system rather than a shelf of parts. It matters most on a refit, where new equipment has to live alongside whatever is already aboard.

With an honest audit of your loads and how you actually use the boat, because that drives everything downstream. From there the order is usually: house bank, then charging, then protection and monitoring, then the comfort systems such as watermaking, lighting or stabilisation. Bring us the audit and we will help you and your installer specify the rest in the right sequence.

PowerSol is a distributor. We supply boatbuilders, installers and dealers across Southern Africa, and that is who you buy and install through. Talk to us first anyway: we will help specify the system and put you in front of a dealer who can quote and fit it.

On an older vehicle with a conventional alternator and a lead-acid auxiliary battery, an isolator can work. On any modern vehicle with a smart or temperature-compensated alternator, or with a lithium auxiliary battery, the DC-DC charger is the correct answer. It draws controlled current from the alternator and delivers a proper charge profile, which protects the vehicle's charging system and actually fills the battery.

Lithium (LFP) gives more usable capacity for the weight and takes charge faster, which matters when you only drive an hour between camps. It costs more upfront and needs correct charging and protection. A quality AGM is cheaper and simpler and remains a sensible choice for a modest fridge-and-lights setup. Decide on three numbers: your daily draw, how far you drive between camps, and the payload you have left.

A winch pulls very high current for a short time, which is a completely different demand from a fridge's steady draw. The winch feed is normally taken from a battery and cabling specified for that surge, with protection rated to match, so it is a wiring and protection question as much as a battery one. Our dealers and installers can specify the cable, protection and switching for your setup.

Scale and intent. A 4x4 build powers a fridge, lights and devices for a weekend or a trail, and recharges by driving. An overland build is designed to stay out for weeks: a large lithium bank, a serious solar array, layered charging and often water treatment, because autonomy is the point rather than a convenience. Plenty of owners start with the first and grow into the second.

PowerSol is a distributor. We supply 4x4 fitment centres, installers and dealers across Southern Africa, and that is who you buy and fit through. Talk to us anyway and we will help spec the build and point you at a dealer near you.

That depends on your loads, your bank and how much you can put back from solar and driving, so the honest answer is a design one rather than a number. A system whose storage and layered charging are matched to real consumption will support extended off-grid use. A system leaning on one charge source rarely lasts weeks. Size it around how you actually travel and the figure becomes one you can depend on.

It stores more usable energy for the weight and the space, it tolerates being deeply cycled every day, and it accepts charge fast enough to refill from a day's drive or a few hours of good sun. All three matter on a payload-limited vehicle. The trade-offs are the upfront cost and the need to do it properly, which is why DC-DC charging, a suitable solar controller and real monitoring belong in the same conversation as the battery.

The same architecture applies. A caravan or motorhome has exactly the same problem — days of consumption, no shore power, a finite roof — and usually a heavier appliance load with more roof to work with. The bank, the array, the charging strategy and the protection layer are specified on identical logic.

For most overland builds, yes. A lithium bank with a properly sized inverter delivers power instantly and silently, with no fuel to carry and no exhaust in camp. Whether it replaces the generator outright comes down to your heaviest AC loads and how much you can recharge each day. Where it does not, the generator usually becomes a charger for the bank rather than the thing your appliances run from.

PowerSol distributes the components — lithium batteries, solar and DC-DC charging, inverters, monitoring, protection and water treatment — and supports the installers, body-builders and dealers who assemble them into a system. The right combination depends on the vehicle, the loads and how far off-grid you intend to go, which is a conversation worth having before anything is bolted in.

Broadly, any vehicle or installation where the power system exists to run equipment rather than to support a trip: rescue and emergency response, utility and municipal fleets, mining and industrial support, mobile-medical units, and broadcast or communications vehicles. If the payload is the reason the vehicle exists, and its failure is more than an inconvenience, the logic on this page applies. We are still refining this market definition with PowerSol, so if your application sits at the edge of it, talk to us.

For many duty cycles, yes, and the reason is usually behaviour rather than energy. A lithium bank with a properly sized inverter delivers power instantly, silently, with no exhaust and nothing to refuel, which matters when people are working nearby or the equipment is sensitive. Whether it replaces the generator outright depends on your load, your run time and your chance to recharge. Where it does not, the generator normally becomes the bank's charger rather than the direct source.

No. PowerSol distributes technical components and supports installers, body-builders and fleet operators in specifying them. Where an application is governed by a standard, a regulator or an operating authority, the compliance path belongs to that framework and to the operator. We will specify components that fit it, so bring the requirement to us at design stage.

PowerSol sells to installers, body-builders and dealers, which is the route most fleet work takes anyway. Standardising a fleet on one component set pays off in shared spares, a single training curve and predictable diagnosis, and that is a conversation worth having before the first unit is built rather than after the tenth.

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

Yes. Built-in safeguards protect the device. Fuses and breakers protect the cable and the rest of the system from fault current, which is a different job. Over-current protection is sized to the conductor and positioned in line with recognised practice such as ABYC guidance, independently of whatever electronics sit downstream.

Only if it supports the chemistry and is configured for it. LFP and lead-acid need different charge voltages and profiles, so the charger has to be matched to the bank. The wrong profile costs you capacity, shortens life, and in some cases will not properly charge the bank at all.

The principles are the same, but the hardware should suit the environment. Marine shore power calls for higher ingress protection, corrosion resistance and locking connectors against damp and salt. Overland rigs care more about vibration and dust. In both cases, confirm that voltage, frequency and amperage match the onboard AC system.

A DC-DC converter changes voltage so equipment running at a different nominal voltage from the battery gets what it needs. A B2B charger also converts voltage, but its job is to charge a battery 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 fills a battery.

It is worth it when the standard automotive regulation does not suit the bank, which most often means charging a lithium (LFP) bank, or wanting higher sustained output to a controlled profile. The external regulator makes the alternator follow a defined charge curve and respect the battery's limits. For a modest lead-acid system, the standard regulation is usually adequate.

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

Usually yes at the electrical level, provided their voltage limits and charge profiles are configured to agree. Deeper coordination — a BMS telling charging sources to back off, or devices sharing monitoring data — depends on a common communications protocol. Confirm that before you specify a mixed system, or select from families designed to interoperate.

It depends on your loads and how you use the boat or vehicle. Solar is the usual foundation for steady daytime charging. A high-output alternator suits anything with regular engine running, because it gives fast bulk recharge. Wind adds output at night and in overcast, windy weather. Many off-grid systems run two or three so the sources cover each other's gaps, while a light load can often be met by one.

An MPPT controller continuously finds the array's optimum operating point and converts surplus panel voltage into extra charging current, instead of simply clamping the panels down to battery voltage. The gain is biggest in cooler temperatures, in partial shade, and where array voltage sits well above the bank, so it typically harvests more energy from exactly the same panels.

A standard internal regulator holds a fixed voltage and was never designed for a large auxiliary bank, least of all a lithium one. A multi-stage external regulator manages bulk, absorption and float so the bank fills correctly, and with temperature sensing it protects both the alternator and the battery during sustained high-output charging. Lithium will pull an alternator hard for as long as you let it.

Yes, provided each source follows the correct charge profile and respects the battery's voltage and temperature limits. LFP is less forgiving 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 route, and chemistry compatibility should be confirmed for every source at design stage.

It is a reverse-osmosis desalinator that reclaims pressure from the brine it discharges and returns that energy to the feed side, so it needs less power for every litre it makes. On battery, solar or sail-powered platforms that means more water for the same draw on the bank, which is usually the deciding factor on off-grid and long-range boats and vehicles.

That depends on the unit and on the conditions. Membrane production varies with feed-water temperature and salinity, so the same watermaker yields more in warm tropical water than in cold. Size the system to your estimated daily consumption plus a margin, and confirm the expected output against the specific model and the waters you actually cruise.

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

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 design the installation to make those jobs easy rather than dreaded.

By vessel length and type. The collision regulations define the light sectors, arcs and visibility ranges required for each class of craft, so confirm what applies to your vessel first and then specify fixtures that meet it. It is a compliance requirement, not a matter of appearance.

Because lighting runs off the battery, usually for the longest stretch of the day when the engine is off. It competes directly with the fridge, the electronics and the pumps, so low draw translates straight into more hours before you need to charge. LEDs help enormously, but the total load across interior, deck and underwater fixtures still has to be budgeted against your bank.

Sealing, corrosion-resistant materials and thermal management, alongside output. An underwater fixture is permanently immersed and has to dump its heat into the surrounding water, so it is engineered differently from anything above the waterline and should be specified separately.

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

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

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

Devices that speak NMEA 2000 are designed to share a common bus, so components from different manufacturers can generally coexist. What matters is confirming each device's compatibility and configuring the network correctly, so check the intended combination before purchase rather than after installation.

Both. The same monitoring and control components are widely used in mobile and overland builds, where multiple subsystems, tight space and weight limits make a single unified interface especially valuable. The selection logic is identical: which standard, how much control, and whether you need the data remotely.