Power Up Your Adventures
Power Up Your Adventures – The Right Way.
What you need to cruise in comfort?
Getting your motorhome or RV electrical setup right makes all the difference between a carefree adventure and a frustrating one. Here's a practical rundown of what motorhome and RV owners should consider
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How much power do you need? Consider how many days you want to stay off-grid. How many people in your RV
AGM vs Lithium: Lithium batteries are lighter, more efficient, and last longer, ideal for modern setups and off grid adventure.
Size it right: Undersized batteries will run flat fast, oversize and you’ve overspent.
Do you have a battery monitoring system, so you know exactly how much power you have.
OR are you mostly plugged in at campsite (watch over charging lead ion batteries)
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Alternator Charging: Do you want to charge while driving?
Solar Panels: Great for off-grid setups, just make sure your panels and controller are matched properly.
Mains Charging: Consider a proper battery charger (not just a cheap plug pack). Smart chargers protect your battery and charge more efficiently.
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Needed if you want to run 230V appliances (like a coffee machine or TV, bikes).
Make sure your inverter size matches what you're powering.
Pure sine wave is ideal, safer for electronics.
What do you need to operate and charge up? e-bikes, (we can set up an external outlet) coffee machines, hair dyers, wifi and streaming phones computers.
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AC for shore power and 230V gear, DC for lights, pumps, fridges.
Properly fused and labelled circuits prevent headaches.
Use marine-grade gear if possible, it’s built for harsh environments.
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Battery monitors, Bluetooth monitors, solar regulators with readouts, and fuse panels with indicators make troubleshooting easier.
Know how much power you’re using and generating.
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Ensure your system complies with AS/NZS 3001:2022 standards.
You’ll need an Electrical Warrant of Fitness (EWOF) for most campsites.
Have it installed by an HMB registered electrician, who familiar with mobile/off-grid systems.
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Need wifi and data where you roam? Working on the go or taking the kids on holiday? Or looking for connectivity options depending on your requirements? Starlink, or its less expensive baby brother, Pep link, can give you superior wifi and streaming experiences.
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RCDs and circuit breakers on all AC systems.
Ventilation for batteries and chargers.
Correct cable sizing and secure wiring, especially in a moving vehicle!
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Want to add Starlink, e-bikes, an induction hob, or extra gear later?
Build in spare capacity now to avoid a full rewire down the track.
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Winter cruising? We’ve got options for all your heating needs.
Our Services
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Stay legal and safe with full EWOF inspections and certification. Required every four years or after any major electrical work.
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We test, maintain, and replace both your starter and house batteries. We also install battery monitoring systems so you can keep track of your power usage.
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Go further off-grid with reliable solar setups, inverter installations, and alternator or shore power charging system checks.
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Fridges, water pumps, microwaves, lights, hobs — if it runs on electricity, we can install it, maintain it, or fix it.
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Upgrade to energy-efficient LED lighting or add extra USB or power outlets (12V and 240V) to make your setup more usable.
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Planning a refit or building from scratch? We design smart, safe systems tailored to your power needs — complete with wiring diagrams and load calculations.
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We install and service electric and diesel heaters, as well as electric and LPG hot water systems.
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From tripping breakers to dead outlets, burning smells to battery drain — we’ll find the problem and fix it fast.
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We provide Code of Compliance certificates for all new installs or upgrades and keep full records of all work done for peace of mind.
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Get fast, reliable internet on the road with our Starlink install and repair service for your motorhome. We’ll take care of the full setup or troubleshoot any issues so you can stay connected wherever your travels take you.
Why Choose HMB Marine Electrical for Your Motorhome?
Power You Can Rely On, On the Road or Off the Grid
From solar and lithium to full AC/DC systems, HMB Marine Electrical brings specialist knowledge from the boating world straight to your motorhome.
Why trust a marine electrician?
Because marine electrical systems are some of the most demanding in the world and we know how to make them safe, reliable, and long-lasting. We understand how to integrate 230V systems seamlessly with 12V/24V DC systems for a fully compatible setup.
With registered electricians and DC specialists under one roof, we deliver complete, expert solutions for your motorhome’s power and for your comfort on the road.
Super Easy Access
Workshops in two locations both with heaps of parking and turning space:
Tamaki Marine Park, (just near syliva park) and Half Moon Bay Marina
