Free UK DeliveryLiFePO4 BatteriesUp to 12-Year Warranty

Campervan Leisure Battery Kits

LiFePO4 batteries sized for your adventures. 90% usable capacity, half the weight of AGM, and built to last 3,000+ charge cycles.

Build Your System
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Customer in their van
Customer van build
Customer wiring diagram
1,000+ Vans Powered
Rated Excellent on Trustpilot4.9 stars · 150+ reviews
Free delivery
Free design consultations with an expert
Custom wiring diagram & install guide with every order

Popular Battery Kits

Every kit is built around a LiFePO4 battery with built-in BMS, plus charging, monitoring and wiring — a complete system. Choose your battery size when you configure.

Pre-Wired Boards

Boards pre-built by professionals, ready for installation.

These are starting points — the builder tool lets you adjust everything to match your exact setup. Or browse the full shop.

Trusted By 1000's Of Vanlifers & DIY Builders

Real Reviews. Real Builds. Real Adventures.

Electrics for all vehicles
Designed by experts
Installation ready
Ongoing support
Takes under 5 minutes

Find Your Perfect Battery Setup

Choose your system
Customise your setup
Order with confidence

Pick a starting point above, or start from scratch in the builder tool. It takes under 5 minutes.

The tool checks compatibility, calculates off-grid time, and updates the price as you go.

Everything arrives together with a custom wiring diagram. Or book a call if you want to talk it through first.

Easy Installation

Personalised Wiring Diagram

Install your system with ease with a free personalised wiring diagram showing all wiring and fuse sizes.

Example personalised wiring diagram showing solar, battery, inverter and DC-DC charger connections

Installation Guide

Our illustrated installation guide walks through each component, providing detailed instructions on how to install your system.

Example installation guide pages showing step-by-step instructions for battery, solar and inverter installation

Our Promises

5-Year Complete System Warranty

Every component covered. We stand behind our systems because we build them to last.

30-Day Money Back Guarantee

Changed your mind? Return your order within 30 days for a full refund. No questions asked.

Custom Wiring Diagram & Install Guide

Every order includes a professionally designed wiring diagram tailored to your exact system and a comprehensive 50-page installation guide.

Unlimited Professional Support

We're not just here to sell you a system — we're here before, during, and after your install to make sure you've always got power on the road.

Free UK Delivery

Everything arrives together, ready to install. No chasing multiple deliveries from different suppliers.

Victron Official Dealer

Genuine components sourced directly from Victron's distribution network, with full manufacturer warranty.

What Our Customers Say

Rated Excellent on TrustpilotRated 4.9 with over 150+ 5 star reviews

Great experience with the consultant…

Great experience with the consultant engineer understanding needs, requirements and skill levels involved in the project. Only suggestion I would make is that rank beginners may not understand connection point requirements of the various components - it would be useful to include on diagrams whether a lug is required or not, and which type/size end to use!

Brittany Hook
3 weeks ago

Great service from start to finish

Great service from start to finish, always available for advice and help, cannot recommend enough, i wouldnt trust my solar/electrics set up with anyone else!!

Carl Longden
1 week ago

Sound advice and no pushy sales.

From initial enquiry to placing our order, over a period of 2 weeks Sam Barker was always ready to offer advice either over the phone or by email. Advice was based on what WE wanted to get from our electrical system. Never felt as though he was upselling, just simply advising the best solution. Checks elsewhere confirmed Sam's advice and design specification was spot on. Thanks Sam. If we ever do this again, I'll be back.

Chris Parkin
1 week ago

Great kit and product backup

Supply of the right kit for our application was made simple by competent, in person, service backup. Wiring diagrams were provided and our technical questions over the phone were given prompt attention and answered in layman's terms. The Vicron Smart Dc to DC charger supplied is an excellent piece of kit.

Gordon McKillop
1 week ago

Brilliant service

Brilliant service

Stuart gardiner
3 weeks ago

My new van build

I was unsure about what I needed for my new van conversion so I used the build feature and arranged a consultation. Sam asked some questions about the build and gave me some options and I went ahead and ordered. The kit was with me in a matter of days from vunked even tho I ordered right after new year! There was a bit of a mix up with my battery delivery from fogstar but Sam was on hand to have it sorted straight away. Can't fault the quality or the service I've recieved from vunked.

Dale Leadingham
2 months ago

Great quick service and spot on wiring…

Great quick service and spot on wiring diagram that was easy to follow!

ian potts
2 months ago

Vunked electric set up

Couldn't recommend vunked enough. I was very apprehensive about the van electrics but at the same time I wanted to give it a go. Sam from vunked was amazing to deal with, from our initial phone call to various e mails and calls during the install (im sure I did his head in) but he was always there to help. The wiring diagrams and instructions you receive are invaluable and easy to follow there is no way I would've been able to work that all out and install. It is very satisfying knowing everything is wired correctly and most importantly safe!!. Cheers Sam

Mark Graham
1 month ago

It's the second time I've used Vunked…

It's the second time I've used Vunked as the service was great last time. Yet again, brilliant! Tried to save a bit by sourcing the main components from Renogy, and Vunked didn't have an issue with this. Top work guys!

D Fan
1 month ago

Great expert advice

Unfortunately it turned out I couldn't buy the kit from Vunked due to geographical limitations, but Sam was anyway incredibly helpful and gave me great advice to design a suitable electrical system for my conversion, saving me a lot of time and headaches! Highly recommend!

Andrea
1 month ago

Great experience with the consultant…

Great experience with the consultant engineer understanding needs, requirements and skill levels involved in the project. Only suggestion I would make is that rank beginners may not understand connection point requirements of the various components - it would be useful to include on diagrams whether a lug is required or not, and which type/size end to use!

Brittany Hook
3 weeks ago

Great service from start to finish

Great service from start to finish, always available for advice and help, cannot recommend enough, i wouldnt trust my solar/electrics set up with anyone else!!

Carl Longden
1 week ago

Sound advice and no pushy sales.

From initial enquiry to placing our order, over a period of 2 weeks Sam Barker was always ready to offer advice either over the phone or by email. Advice was based on what WE wanted to get from our electrical system. Never felt as though he was upselling, just simply advising the best solution. Checks elsewhere confirmed Sam's advice and design specification was spot on. Thanks Sam. If we ever do this again, I'll be back.

Chris Parkin
1 week ago

Great kit and product backup

Supply of the right kit for our application was made simple by competent, in person, service backup. Wiring diagrams were provided and our technical questions over the phone were given prompt attention and answered in layman's terms. The Vicron Smart Dc to DC charger supplied is an excellent piece of kit.

Gordon McKillop
1 week ago

Brilliant service

Brilliant service

Stuart gardiner
3 weeks ago

My new van build

I was unsure about what I needed for my new van conversion so I used the build feature and arranged a consultation. Sam asked some questions about the build and gave me some options and I went ahead and ordered. The kit was with me in a matter of days from vunked even tho I ordered right after new year! There was a bit of a mix up with my battery delivery from fogstar but Sam was on hand to have it sorted straight away. Can't fault the quality or the service I've recieved from vunked.

Dale Leadingham
2 months ago

Great quick service and spot on wiring…

Great quick service and spot on wiring diagram that was easy to follow!

ian potts
2 months ago

Vunked electric set up

Couldn't recommend vunked enough. I was very apprehensive about the van electrics but at the same time I wanted to give it a go. Sam from vunked was amazing to deal with, from our initial phone call to various e mails and calls during the install (im sure I did his head in) but he was always there to help. The wiring diagrams and instructions you receive are invaluable and easy to follow there is no way I would've been able to work that all out and install. It is very satisfying knowing everything is wired correctly and most importantly safe!!. Cheers Sam

Mark Graham
1 month ago

It's the second time I've used Vunked…

It's the second time I've used Vunked as the service was great last time. Yet again, brilliant! Tried to save a bit by sourcing the main components from Renogy, and Vunked didn't have an issue with this. Top work guys!

D Fan
1 month ago

Great expert advice

Unfortunately it turned out I couldn't buy the kit from Vunked due to geographical limitations, but Sam was anyway incredibly helpful and gave me great advice to design a suitable electrical system for my conversion, saving me a lot of time and headaches! Highly recommend!

Andrea
1 month ago

Vunked excellent…

Purchasing items was easy with expert advice on the website and phone consultation, product's turned up within two days great service, not done instruction yet so hopefully get help during installation if needed.

Mr Nick Betts
2 months ago

These guys are amazing

These guys are amazing! Endlessly helpful even after ordering everything and adding things to the system - offering more wiring diagrams to help build the system at no extra cost and even offering phone calls to discuss what I'm trying to achieve! Could not recommend enough for someone who is inexperienced in electrics and needs some help along the way. Extremely clear instruction manual and wiring diagrams - thanks a lot Vunked team!

James Tilyard
2 months ago

Superb company

As a novice when it comes to van electrics Vunked proved to be my saviour when it came to ordering my electrical system. The website is full of fantastic information, answering all of my queries and helping me decide exactly what I needed and why. The ordering system was so easy to use and "behind the scenes" all the components, such as appropriate wires, fuses etc were automatically added and came in one delivery. It was accompanied by a wiring diagram and more detailed step by step guide which will prove invaluable. I had a small query (due to my ignorance) which I raised by email and Alan answered within minutes with the info required. Overall I'd have no hesitation in recommending Vunked and it's a comfort to know they are there to answer my queries. Well done!

Mr Donald Callum
2 months ago

From the phone call to order, perfect service

From the phone consultation to making the decision what we wanted was straightforward with a consultant listening to our wishes. We were offered several solutions, highlighting the differences between each of them. After our conversation the email gave us all that we ordered with another chance to make changes. No pressure, just a list of all the items where you could add or remove before finalizing your order. Order was confirmed and paid around lunch time, the whole order arrived the next day. Service from start to finish.

Erwin Oosterhoorn
3 months ago

Great service and communication

Great service and communication. The website is great. I'm a complete novice and they were super helpful. Would recommend. FIVE STARS

Emma
2 months ago

Excellent communication top class and service

Excellent communication and service

Daniel Garfoot
2 months ago

Legends

Started designing my system with another company (nohma) and when I came to purchase they ended up disappearing and not returning any calls or messages for 2 weeks. Ended up getting fed up of waiting as I was on a tight schedule so I gave vunked a message. Got a message back the same day and vunked where extremely happy to replicate the system and even price match. Kit then got sent out with wiring diagrams and build instructions being sent the same day as purchase. Instructions are super easy to understand even for me who try to stay away from any electrical jobs. Everything was with me within 2 days. Unfortunately my solar panel had been damaged during transit but when I contacted vunked about what to do they offered either a replacement sent out free of charge or a 50% refund on the panel with a guarantee that if it doesn't work a new panel will be sent no matter how late I do it. Overall my only issue was that I didn't use vunked in the first place. These legends are amazing to work with and cannot recommend them enough.

Josh Scott
3 months ago

Great company pleasure to deal with

Great company pleasure to deal with

Nigel Flatt
3 months ago

Excellent customer support

Really easy order processing. Quick delivery. Excellent after sales communications.

CE
3 months ago

Excellent service and delivery

Excellent service and delivery

Del Sturrock
3 months ago

Vunked excellent…

Purchasing items was easy with expert advice on the website and phone consultation, product's turned up within two days great service, not done instruction yet so hopefully get help during installation if needed.

Mr Nick Betts
2 months ago

These guys are amazing

These guys are amazing! Endlessly helpful even after ordering everything and adding things to the system - offering more wiring diagrams to help build the system at no extra cost and even offering phone calls to discuss what I'm trying to achieve! Could not recommend enough for someone who is inexperienced in electrics and needs some help along the way. Extremely clear instruction manual and wiring diagrams - thanks a lot Vunked team!

James Tilyard
2 months ago

Superb company

As a novice when it comes to van electrics Vunked proved to be my saviour when it came to ordering my electrical system. The website is full of fantastic information, answering all of my queries and helping me decide exactly what I needed and why. The ordering system was so easy to use and "behind the scenes" all the components, such as appropriate wires, fuses etc were automatically added and came in one delivery. It was accompanied by a wiring diagram and more detailed step by step guide which will prove invaluable. I had a small query (due to my ignorance) which I raised by email and Alan answered within minutes with the info required. Overall I'd have no hesitation in recommending Vunked and it's a comfort to know they are there to answer my queries. Well done!

Mr Donald Callum
2 months ago

From the phone call to order, perfect service

From the phone consultation to making the decision what we wanted was straightforward with a consultant listening to our wishes. We were offered several solutions, highlighting the differences between each of them. After our conversation the email gave us all that we ordered with another chance to make changes. No pressure, just a list of all the items where you could add or remove before finalizing your order. Order was confirmed and paid around lunch time, the whole order arrived the next day. Service from start to finish.

Erwin Oosterhoorn
3 months ago

Great service and communication

Great service and communication. The website is great. I'm a complete novice and they were super helpful. Would recommend. FIVE STARS

Emma
2 months ago

Excellent communication top class and service

Excellent communication and service

Daniel Garfoot
2 months ago

Legends

Started designing my system with another company (nohma) and when I came to purchase they ended up disappearing and not returning any calls or messages for 2 weeks. Ended up getting fed up of waiting as I was on a tight schedule so I gave vunked a message. Got a message back the same day and vunked where extremely happy to replicate the system and even price match. Kit then got sent out with wiring diagrams and build instructions being sent the same day as purchase. Instructions are super easy to understand even for me who try to stay away from any electrical jobs. Everything was with me within 2 days. Unfortunately my solar panel had been damaged during transit but when I contacted vunked about what to do they offered either a replacement sent out free of charge or a 50% refund on the panel with a guarantee that if it doesn't work a new panel will be sent no matter how late I do it. Overall my only issue was that I didn't use vunked in the first place. These legends are amazing to work with and cannot recommend them enough.

Josh Scott
3 months ago

Great company pleasure to deal with

Great company pleasure to deal with

Nigel Flatt
3 months ago

Excellent customer support

Really easy order processing. Quick delivery. Excellent after sales communications.

CE
3 months ago

Excellent service and delivery

Excellent service and delivery

Del Sturrock
3 months ago
Trustpilot
Victron EnergyFogstarBlue Sea Systems

Common Questions About Campervan Leisure Battery Kits

It depends on your daily usage. 100Ah (90Ah usable) suits weekend trips with light usage — lights, phone charging, and a small fridge. 200Ah (180Ah usable) is the sweet spot for most van lifers — it'll comfortably run a fridge, lights, laptop charging, and more for 2–4 days off-grid without solar. Use our builder tool to calculate your exact needs.

LiFePO4 (lithium iron phosphate) is better in every way for campervans. 90% usable capacity vs 50% for AGM, 3,000+ charge cycles vs 300–500, half the weight, faster charging, and a flat discharge curve so your appliances run consistently. The upfront cost is higher but the total cost of ownership is much lower.

It depends on your battery size, daily usage, and charging sources. As a rough guide: a 200Ah LiFePO4 gives you ~180Ah usable, which is about 2–4 days for a typical setup (fridge, lights, phone, laptop). Adding solar and DC-DC charging extends this significantly. Our builder tool calculates this exactly for your appliances.

Yes, but parallel batteries must be the same chemistry, capacity, and ideally the same age for balanced charging. If you think you might expand later, it's worth sizing for it from the start — our team can advise on the best approach.

Yes — LiFePO4 batteries require charging sources with a lithium charge profile. All our kits include compatible Victron chargers (MPPT, DC-DC, and MultiPlus) that are pre-configured for lithium. Never charge LiFePO4 directly from the alternator without a DC-DC charger.

Absolutely. Book a free call with our team and we'll help you spec the perfect battery system for your build. No pressure, no obligation.

All components come with a 5-year warranty. We also provide our Adventure-Ready Guarantee — ongoing support before, during, and after your installation.

The honest answer is: it depends on three things — how much you use each day, how long you go between charges, and how much solar you have to top up. Your usage is the biggest lever, so start there. Most van builds consume between 800 Wh and 2,000 Wh per day. For example, a fridge may use 30–50Ah daily, while lighting and device charging add further demand. Battery capacity must be matched with solar or alternator charging to avoid excessive discharge cycles.
BatteryCovers with no inputGood for
100AhLight: 4 days · Medium: 1 dayDay trips, EHU most nights
200AhLight: 9 days · Medium: 2 daysWeekend off-grid with a fridge
400AhMedium: 4 days · Heavy: 1.5 daysWeek-long trips, most UK touring
600Ah+Medium: 6 days · Heavy: 2 daysFull-time, winter, induction cooking

Lithium leisure batteries offer higher usable capacity, faster charging and lighter weight. A 100Ah lithium battery delivers around 95Ah of usable energy, compared to roughly 50Ah from an equivalent AGM battery, once you account for depth-of-discharge limits. While lithium systems do require compatible charging equipment, the price gap has narrowed significantly — and given they last three to five times longer, lithium is almost always the better long-term investment.

Starting prices (200Ah)
AGM: £250
Lithium (mid-market): £300

Some insights from these numbers:
  • Lithium is ~8× cheaper per kWh delivered than AGM at these prices — even bigger than the 100Ah comparison. £300 for 200Ah lithium is genuinely far better pricing; it completely rewrites the “lithium is the premium option” narrative.
  • A single 200Ah AGM battery physically can’t meet large power loads. AGM discharge rate is usually maxed out at 1600W. So to run large 3000W loads means two or three batteries vs one lithium battery. The cost gap isn’t just per kWh, it’s that AGM can’t run large loads.
  • Cycle-life caveat still applies. 500 cycles on AGM assumes you stay within 50% DoD. Most don’t — if you discharge to 70–80% semi-regularly, that cuts AGM life to ~250 cycles and effectively doubles the £/kWh delivered. Lithium doesn’t punish DoD the same way.

AGM vs LFP — 200Ah comparison

UpfrontCycle lifeLifetime kWh£/kWh delivered
AGM 200Ah£250~500600 kWh£0.42
LFP 200Ah£300~3,0005,760 kWh£0.05

Yes, many DIY builders install a leisure battery kit themselves during campervan builds. Proper fuse placement and cable sizing are critical to prevent overheating and short circuits. A structured campervan leisure battery kit with wiring guidance reduces installation risk. For higher-capacity systems or complex camper van battery systems, professional support will give you peace of mind when lying in your camper bed at night. If you’d like a hand spec’ing your build, book a free call with our team.

Lifespan is where lithium really pulls ahead. AGM batteries typically last 3 to 5 years under regular cycling, while lithium batteries can last 8 to 12 years or 2,000 to 3,000 charge cycles. Correct charging settings and avoiding repeated deep discharge will help either chemistry last longer, but lithium's durability advantage is hard to ignore.

No, solar panels must connect to a charge controller, whether it is an MPPT or a PWM controller. A solar charge controller regulates voltage and prevents overcharging. Integrating a leisure battery with a campervan electrics kit that includes MPPT charging improves efficiency and protects battery health.

The best leisure battery for off-grid campervan trips is mostly about ensuring it is of good quality, has enough storage to keep you powered, and fits nicely in your van. Lithium batteries are popular for extended off-grid setups due to higher usable energy and faster recovery. However, correct system sizing matters more than brand alone. Matching battery size to daily consumption and how much power you get from solar and DC means your off-grid adventures will never end.

Book a Free Consultation

Talk to our team and we'll spec your system with you. No pressure, no obligation.