Power your caravan with modern lithium:
Battery upgrades & monitoring
Caravan lithium battery upgrades from £450
Ditch the heavy, unreliable lead-acid battery. We install lightweight LiFePO4 lithium batteries with intelligent battery monitors — giving you more usable power, less weight, and full visibility of your energy. Expert caravan lithium battery installers in Somerset.
Is your caravan battery letting you down?
Your old lead-acid leisure battery is heavy, slow to charge, and you can only safely use about half of its rated capacity. For off-grid caravanning, that's a serious problem.
Sound familiar?
- Your battery goes flat after one night off-grid, even with careful use.
- Heaving that heavy battery in and out of the front locker is a workout.
- You have no idea how much power you have left — it's just a guessing game.
- Your caravan's built-in charger doesn't charge fast enough for modern needs.
Your caravan was built for weekends on hook-up — but you want longer off-grid adventures.
Upgrade your caravan to lithium — lighter, more power, full visibility
The solution is a complete battery system upgrade, centred around a powerful, lightweight Lithium Iron Phosphate (LiFePO4) battery. It's the new standard for serious off-grid caravanners, offering double the usable power at half the weight.
We offer a range of Victron SmartLi and premium LiFePO4 batteries from 100Ah to 200Ah, each with a built-in BMS for safe, trouble-free operation. A lithium upgrade gives you up to 5,000 charge cycles — compared to just 300-500 from lead-acid — and charges three times faster. You can monitor everything via the VictronConnect app on your phone.
We pair your new lithium battery with an intelligent battery monitor such as the Victron SmartShunt, which connects to your phone via Bluetooth. You'll see voltage, current, state of charge, and time remaining — all at a glance. No more guessing how much power you have left.
We also recommend a Battery-to-Battery (B2B) charger so your caravan battery charges efficiently from your tow vehicle's alternator while you're driving. You arrive on site with a full battery, ready to enjoy. Pair it with a Victron SmartSolar MPPT controller to get the most from your roof panel. Own a campervan? See our campervan lithium battery upgrade page.
Victron SmartSolar MPPT — the gold standard
- Bluetooth monitoring — Track solar yield, battery status, and charge history in real-time via the VictronConnect app.
- Universal compatibility — Fully configurable charge profiles for AGM, Gel, and Lithium caravan batteries.
- Ultra-fast tracking — Locks onto the optimum power point instantly as light conditions change.
The essential step for lithium upgrades
Thinking of switching your caravan to lithium? A Victron SmartSolar MPPT is a vital upgrade.
- Lithium batteries need a specific absorption voltage and charging profile that PWM controllers cannot deliver.
- Victron MPPTs feature fully configurable lithium profiles, ensuring safe and complete charging every time.
See our caravan lithium battery upgrade or caravan solar panel installation pages for combined solutions. Own a campervan? See our campervan MPPT upgrade page.
The lithium advantage for your caravan
Massive weight saving
- LiFePO4 batteries are typically less than half the weight of lead-acid. For a caravan owner, that means more payload for your kit and easier handling when accessing the battery locker.
Almost double usable power
- A 100Ah lithium battery gives you 80-100Ah of usable power compared to just 50Ah from the same size lead-acid. More power, same space, same weight.
Battery monitor — see your power
- We install a Bluetooth battery monitor that shows voltage, current, state of charge, and time remaining on your phone. Full visibility of your energy at a glance.
Fast charging while towing
- A Battery-to-Battery (B2B) charger tops up your lithium from your car alternator efficiently. Arrive on site with a full battery, ready to enjoy.
Longer lifespan
- A well-maintained lithium battery can last 5-10 years compared to 2-3 for lead-acid. Far better long-term value for your caravan investment.
Professional Installation
- We fit your lithium battery, install the monitor, and upgrade your charging system. Everything working together, fully configured, backed by our 12-month warranty.
Our 5-step caravan lithium battery upgrade
Tailored to your touring style, your storage constraints, and the way you actually use your van.
Power audit & consultation
We review your caravan's battery compartment dimensions, existing wiring, and how you actually tour — weekends away, long European trips, off-grid rallies. This tells us the right LiFePO4 capacity and the best place to put it within the van.
System design & quote
We specify the right lithium battery for the space available, plus any supporting kit — Bluetooth monitor, B2B charger for tow-car charging, or solar regulator. You receive a clear, itemised quote within 48 hours, with parts lead times included.
Book the install
Your deposit secures the battery and any ancillary components, and confirms your installation slot. Most caravan battery upgrades are scheduled within 2–4 weeks of booking.
Professional installation
We remove the old leisure battery, prepare the compartment (venting, brackets, cable routing), and fit the new lithium unit. Any monitor, B2B charger, or 12S/13-pin upgrades are integrated and tested — typically a 1–3 day job, and we'll come to your storage site if that's easier.
Handover & app setup
We pair the Bluetooth monitor to your phone, show you the live data, and explain the new charging behaviour end-to-end. You leave with documentation, our 12-month installation warranty, and direct ongoing support whenever you need a hand.
Ready for a real caravan power upgrade?
From a simple battery swap to a complete lithium system with monitoring — let's build the right setup for your caravan.