// LITHIUM POWER UPGRADES
Lithium power for boats & off-grid
More usable power, less weight and years more life — we design and fit Victron lithium (LiFePO4) systems for boats, cabins and off-grid buildings across Dorset, with solar, smart charging, inverters and monitoring. Free survey, clear quote, properly supported.
Rated 4.9 on GoogleFamily-run since 1995 · real people, no call centre/01 — WHY LITHIUM
Power that goes the distance
Old lead-acid leisure batteries are heavy, slow to charge, and you can only safely use about half their capacity before you risk damaging them. Lithium (LiFePO4) changes all of that.
We build every system on Victron Energy — the gold standard for mobile and marine power — and set up monitoring so you can see exactly what’s going on, wherever you are.
- Far more usable power
- Much lighter than lead-acid
- Faster charging from solar & engine
- Thousands of charge cycles
- Built on Victron Energy
- Monitored from your phone
- Designed around your real usage
- Fitted & supported by us
/02 — WHAT WE FIT
A complete power system
Lithium battery banks
Right-sized LiFePO4 banks for how you actually use power.
Solar & charging
Roof solar, MPPT controllers and charging that tops up as you go.
Inverters
Run 230V appliances — from a coffee machine to power tools.
DC-DC & engine charging
Safely charge your leisure bank from the engine while you travel.
Battery monitoring
See charge, solar and usage live, on a screen or your phone (Victron VRM).
Marine-grade installs
Boat 12/24V systems built for the damp, demanding marine environment.
/LIVE — WE RUN ONE OURSELVES
Our van’s lithium battery — live right now
This is the Victron LiFePO4 system in our own off-grid support van, reporting live — the same kit and monitoring we fit on boats and off-grid buildings.
See the full live dashboard — solar flow, savings & 30-day history →
Want one like this for your own system? We build custom VRM dashboards →
/03 — WHO IT’S FOR
Built for life off the mains
Motorhomes
Dependable power for everything you run on the road — weekends away or full-time travel.
Campervans
Silent power for the fridge, lights, devices and even an induction hob in a conversion.
Boats — Poole Harbour & coast
Reliable house power afloat, with proper monitoring so you always know your state of charge.
Off-grid & overlanding
Go further off the beaten track with power you can genuinely rely on.
Upgrades & rescues
Replacing tired lead-acid, or fixing a system that never quite worked? We’ll sort it.
Pairs with off-grid
The same Victron expertise behind our off-grid & home energy work.
/04 — HOW IT WORKS
From survey to switched-on
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01
Free survey
Tell us how you travel and what you run; we work out the power you really need.
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02
Design & quote
We design the right Victron system and give you a clear, fixed price.
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03
Fit & commission
We install it properly, test it thoroughly and set up monitoring.
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04
Off you go
Enjoy your power — with support and remote monitoring whenever you want it.
// GOOD QUESTIONS
Frequently asked
Do you fit lithium batteries in campervans or motorhomes?
No — we’re not a campervan or motorhome fit-out business. We design and fit Victron systems for homes, businesses, boats and off-grid buildings. For a van, our free battery and solar calculator sizes the system, and we can set up the remote monitoring.
Can you upgrade a boat to lithium?
Yes — we fit marine 12/24V lithium banks, inverter/chargers and monitoring for boats around Poole Harbour and the Dorset coast, designed for the marine environment.
Why switch to lithium (LiFePO4)?
Lithium gives you far more usable power, much lighter weight, faster charging and a far longer lifespan than lead-acid — ideal for living or working off-grid, on land or on the water.
Can I monitor it from my phone?
Yes — we set up Victron monitoring so you can see your battery, solar and usage from your phone, or in our 365 AI OS off-grid dashboard.
How much does it cost?
It depends on how much power you need and what you already have — we survey it and give you a clear, fixed quote first, with no surprises.
Power your adventures
Tell us how you travel or sail and we’ll design the right lithium system — free survey, clear quote, no obligation.
01202 775566 · help@365techies.co.uk · MON–FRI 9AM–5PM