Leisure Battery & Split-Charge Relay Installation – Supplied & Fitted
Looking to power your campervan’s electrics while off-grid? A leisure battery and split-charge relay system is the ideal solution. At Kinmel Campers, we specialise in leisure battery and split charge relay installation for all types of campervans, from Volkswagen Transporters to Mazda Bongos, Toyota Alphards, and self-build conversions.
Whether you’re running interior lights, a fridge, USB sockets, or a diesel heater, a properly installed leisure battery setup keeps your van powered safely—without draining your main starter battery. We supply and fit everything you need, including cabling, fuse boxes, isolators, and intelligent voltage-sensing relays.
Leisure Battery & Split-Charge Relay Installation
The split-charge relay automatically charges your leisure battery while you drive, using excess alternator power. It’s completely automatic — no switches or solar needed.
Â
Leisure Battery & Split Charge Relay Installation – What’s Included?
âś… 130Ah Leisure Battery (brand new, supplied)
✅ Split-Charge Relay Kit – intelligent voltage-sensing system
✅ Proper cable routing with heavy-duty 16mm² cables
âś… Fully fused on both ends for maximum safety
âś… Wired cleanly to your fusebox, sockets, or distribution board
âś… Earth bonding and isolation tested
âś… Installed in your chosen location (under seat, rear, or locker)
âś… 12-month parts & labour warranty
âś… Completed in one day
Pricing
| Package | Supplied & Fitted |
|---|---|
| Standard Kit – 110Ah + VSR | £395 |
| Upgrade Kit – 130Ah + VSR | £445 |
| Add USB ports / 12V sockets | +ÂŁ75 |
| Add Battery Monitor (Digital) | +ÂŁ75 |
| Dual Battery System / Custom Cabling | POA |
Why Your Campervan Needs a Split Charge Relay System
Your main van battery is for starting the engine. A leisure battery gives you a second power source for all your 12V gear — and prevents you from getting stranded.
The split-charge relay automatically charges your leisure battery while you drive, using excess alternator power. It’s completely automatic — no switches or solar needed.
Compatible With All Vans & Conversions
We fit into:
VW Transporters (T5 / T6 / T6.1)
Mazda Bongo, Toyota Alphard
Ford Transit Custom / Peugeot Boxer / Fiat Ducato
Nissan Elgrand, Mitsubishi Delica
DIY self-builds, microcampers & off-grid rigs
What You Can Power with a Leisure Battery
Diesel Night Heaters
USB charging & LED lights
Fridges or cool boxes
Water pumps & fans
Inverters for 240V use
Anything 12V with the right cabling
How Long Does Fitting Take?
Leisure battery systems with split-charge relays are typically fitted in half a day to one full day, depending on your van layout and any extras added.
You drop off in the morning and collect ready to go by the afternoon.
Local Experts in Campervan Power Systems
We install all systems in-house at our Kinmel Bay workshop — no outsourcing, no shortcuts. We only use trusted components and take the time to do things right, clean, and safe.
Book Your Installation Today
Call 01745 771 231 or message us now to schedule your install.
We’ll guide you through your options and get your van powered up the right way.
Kinmel Campers – Powering Adventures Since Day One
Common Questions About Leisure Battery Installation
What is a leisure battery?
A leisure battery is a secondary battery installed in your campervan to power 12V appliances like lights, USB ports, fridges, and diesel heaters — without affecting your main vehicle battery. It charges while you drive and keeps your gear running when parked.
What’s a split-charge relay?
A split-charge relay is a smart switch that automatically charges your leisure battery while the engine is running. It senses voltage from the alternator and routes power to the leisure battery — then disconnects when the engine is off, so you don’t drain your starter battery.
We install Voltage Sensing Relays (VSR) which are fully automatic — no manual switches needed.
What’s included in the installation?
âś… Brand new 110Ah or 130Ah AGM Leisure Battery
âś… Intelligent Split-Charge Relay System
âś… Heavy-duty wiring, fusing & earth bonding
âś… Clean install into your van (under seat or boot area)
âś… Full integration with your 12V circuit or fuseboard
âś… Testing & 12-month warranty
How much does it cost?
âť“How much does it cost?
| Package | Price Supplied & Fitted |
|---|---|
| 110Ah Leisure Battery + Relay | ÂŁ495 |
| 130Ah Leisure Battery + Relay | ÂŁ545 |
| Add USB or 12V Socket | +ÂŁ40 each |
| Add Digital Battery Monitor | +ÂŁ75 |
Custom installs (inverters, second leisure battery, rear-mounted systems etc.) are priced on enquiry.
Â
What size battery do I need?
It depends on your setup. Here’s a general guide:
110Ah – Great for weekenders and basic 12V setups
130Ah – Ideal for longer trips, fridges, heaters and more charging capacity
Dual or Lithium – For full-timers, off-grid builds, or solar-powered rigs (ask us for details)
We’ll help you pick the right size based on how you use your van.
Can I use it to power a fridge or heater?
Yes! A properly installed leisure battery system can run:
12V Compressor Fridges
Diesel Night Heaters
Water pumps
LED lights
USB charging
Fans and low-wattage appliances
It’s the foundation of any off-grid camper setup.
Do you install battery monitors or inverters?
Yes — we can add:
Digital voltage displays or Bluetooth monitors
12V fuseboards and custom wiring
Inverters for 240V mains power (additional cost)
Let us know what you need and we’ll bundle it into your install.
Will it damage my van’s electrics?
No — we use heavy-duty cabling, proper fusing, and professional routing. We never cut corners or piggyback off factory systems.
Everything is tested and built to be safe, robust, and removable if needed.
Where does the battery go?
Common install locations:
Under the passenger seat
In a rear cupboard or locker
Inside a dedicated battery box under the bed
We’ll choose the best spot depending on your van layout and usage.
Can I upgrade later?
Yes — we wire with future upgrades in mind. You can always add:
Solar panel systems
Inverters
Extra sockets
Second leisure batteries
We’ll future-proof your setup where possible.
What vans do you install into?
We fit leisure battery systems into:
VW Transporters (T5 / T6 / T6.1)
Nissan Elgrand / Toyota Alphard
Nissan Elgrand / Mitsubishi Delica
Ford Transit, Custom, Connect
Peugeot Boxer / Fiat Ducato / Citroën Relay
Self-builds and microcampers
If it’s got wheels and a 12V system, we’ll make it work.
How long does fitting take?
Most installs are completed in half a day to a full day, depending on complexity and add-ons.
Drop off in the morning — ready by the afternoon.
How do I book?
đź“ž Call us: 01745 771 231
đź’¬ Message via our Contact Page or Facebook
Why Choose Kinmel Campers?
âś… Specialists in Campervan Welding & Restoration
âś… Honest Advice & Transparent Pricing
âś… In-House Fabrication & Fitting
âś… Friendly, Down-to-Earth Service
âś… Flexible Booking & Fast Turnaround
âś… We Support ALL Popular Campervans
Customer Experiences That Speak for Themselves
Book Your Leisure Battery Fitting Today
Use our simple booking form to get your leisure battery supplied & fitted by the North Wales Campervan Experts.