For heavier or longer 230V use, Off-Grid Ultimate steps up to a 500Ah lithium battery, 60A drive charging and a 3kW inverter. Work on your laptop, power a CPAP overnight and cook with an induction hob, giving you more freedom to stay off-grid and away from hook-up.
Off-Grid Ultimate
Live on 230V. Even when you're off-grid.
Lithium kit 3: off-grid ultimate
- 5 Year Parts Warranty
- Lithium batteries can re-charge up to 40% in 30 mins*
- Charges from the sun, engine and hook-up
- 1/3rd of the weight of conventional lead acid batteries
- Under seat battery install keeps your space
- Maintenance-free
- Download your FREE lithium kit comparison guide
Want a quick quote for your vehicle?
More capacity for life on the road
Designed for customers whose off-grid routine includes more than occasional 230V appliance use.
Work from your motorhome
The flyer highlights working on a laptop all day as an example of extended 230V use.
Overnight CPAP use
Support overnight CPAP use as part of a more power-intensive off-grid routine. Actual duration depends on equipment and usage.
Cook off-grid
The flyer references an induction hob, boiling the kettle and cooking demand of around 1.2–2.0 kWh per hour of induction cooking.
Off-Grid Ultimate Specifications
Litihum battery
500Ah lithium
Solar panel
200W panel
Drive charging
60A
Hook-up charging
35A
230V inverter
3kW
Choose Off-Grid Ultimate if...
Your power use is a big part of the trip
- You expect heavier or longer 230V use away from hook-up
- You want to work on a laptop for extended periods or run CPAP overnight
- You want to cook with an induction hob or boil a kettle off-grid, subject to actual energy demand
Let's check your real world needs
Appliance demand and run-times vary. We’ll discuss how you use your motorhome and confirm the right system and price before you commit.
Compare all three kits
Choose your level. Pick the system around the problem you want to solve, not just the biggest battery.
Lithium FAQs
Is lithium safe?
Is lithium safe?
Yes. When correctly installed, lithium batteries are a safe and reliable choice for your motorhome.
We use correctly sized cabling and appropriate fusing to protect the system, minimise heat build-up and avoid unnecessary voltage loss.
As standard, we also fit a Class T fuse directly at the battery. This provides high-speed protection against the very high short-circuit currents that lithium batteries can deliver. Not every installer includes a Class T fuse as standard. We do. It’s an important part of a properly protected lithium installation, and one we don’t leave out.
Will it work in the winter?
Will it work in the winter?
Yes. Your lithium system can be set up for year-round use.
Cold weather can affect lithium battery charging, so where winter use is important, we can fit self-heating lithium batteries. These batteries use built-in heating to warm the cells before charging, helping the battery continue to accept a charge safely in cold conditions.
Can I just buy the battery?
Can I just buy the battery?
No. We supply Renogy lithium batteries as part of a complete system build.
Lithium batteries need to work with the right charging equipment, protection and system configuration. That’s why we don’t simply supply a battery on its own—we design and install the complete system so the battery, charging sources and other components are properly matched.
It also means we can warranty the system as a whole, giving you one team responsible for the installation, setup and performance of your off-grid power system.
Price for Installation
From
£6,750
Related Services
Our Team
Welcome to the team here at Bristol Caravans and Motorhomes. We’re really proud of the team, and over the years it’s been our pleasure to provide advice and services to our ever-growing loyal customers.
Thank you for trusting us with your investment.
Oakleigh Wood
Director
Eliot Carey
Manager
Tracey Allen
Service Advisor
Kas Press
Customer Service Advisor
Leo Johnson
Customer Service Advisor
Nick Marshall
Senior Habitation Technician
Andy Carter
Habitation Technician
Joe Wonnacott
Senior Mechanic
Simon Bennet
Automotive Accessory Technician
Nick Clifford
Valeter
Rob Housham
Driver
Alice Ramsay
Marketing Executive
“We arrived at Llanfyllin, and it was raining so hard it was difficult to find our plot. Once parked up, it took just 90 seconds as we let our automatic levelling system get us level. Thank you, Bristol Caravans, for fitting our amazing levelling system.”
Jake and Carol Smith