Best Lithium Leisure Batteries UK (2026)
8 lithium (LiFePO4) 12V leisure batteries for campervans, motorhomes, caravans and boats, compared on price per kWh, cold-weather charging, current and warranty. Our top pick is the Fogstar Drift 12V 105Ah.
See the ComparisonDisclosure: Some links on this page are affiliate links (Renogy and Amazon). We may earn a commission at no extra cost to you. We rank on merit, not commission: four of our eight picks earn us nothing.
Quick Answer: Which Lithium Leisure Battery Should You Buy?
For most people the best lithium leisure battery in the UK is the Fogstar Drift 12V 105Ah (£319.99 direct): it heats its cells before charging, has Bluetooth, is IP67 and has a 10-year warranty. The Fogstar Drift ECO 12V 314Ah Bluetooth gives the most storage per pound, about 4 kWh for £429.99. On a budget, the Renogy Core Mini 12.8V 100Ah is £189.99.
Before you buy, check that your charger has a lithium setting and whether your vehicle needs a DC-DC charger (most Euro 6 vans do). What else has to change.
Most Capacity per Pound
Fogstar Drift ECO 12V 314Ah Bluetooth: 4 kWh, about £107 per kWh
View at FogstarHow We Compared These
We compared 12V LiFePO4 leisure batteries sold in the UK on price per kWh, continuous current (what it can run), cold-weather charging, Bluetooth monitoring, warranty terms, weight and size. Specs come from each maker's product pages, spec sheets and warranty documents. Energy is capacity x 12.8 V for every battery, so the price per kWh compares like with like. Direct prices were checked on the brands' own sites on 26 September 2026; the Amazon price comes from Amazon.
The ranking is our judgement across those criteria. It is not affected by commission: Fogstar and Roamer links earn us nothing.
Lithium Leisure Battery Comparison Table
| Battery | Capacity | Continuous | Cold charging | Bluetooth | Warranty | Weight | Price | £/kWh |
|---|---|---|---|---|---|---|---|---|
| Fogstar Drift 12V 105Ah | 105 Ah 1,344 Wh | 100 A | Self-heating | Built in | 10 years (defects only) | 10 kg | £319.99 direct | £238 |
| Renogy Core Mini 12.8V 100Ah | 100 Ah 1,280 Wh | 100 A | Charge cut-off below 0°C | Add-on | 5 years (prorated after 12 months) | 9.9 kg | £189.99 direct | £148 |
| Renogy Core 12V 200Ah Bluetooth | 200 Ah 2,560 Wh | 200 A | Charge cut-off below 0°C | Built in | 5 years (prorated) | 20.2 kg | £389.99 direct | £152 |
| Fogstar Drift ECO 12V 314Ah Bluetooth | 314 Ah 4,019 Wh | 250 A | Charge cut-off below 0°C | Built in | 6 years | 28 kg | £429.99 direct | £107 |
| Renogy Pro 12V 200Ah Self-Heating | 200 Ah 2,560 Wh | 200 A | Self-heating | Built in | 7 years (prorated) | 23 kg | £619.99 direct | £242 |
| Fogstar Drift Seat Base 12V 230Ah | 230 Ah 2,944 Wh | 250 A | Self-heating | Built in | 10 years | 25 kg | £699.99 direct | £238 |
| Roamer 105SMART5 MAX | 105 Ah 1,344 Wh | 300 A | Charge cut-off below 0°C | Built in | 12 years (prorated) | 11 kg | £389 direct | £289 |
| ECO-WORTHY 12V 100Ah Bluetooth | 100 Ah 1,280 Wh | 100 A | Charge cut-off below 0°C | Built in | 3 years | 10.5 kg | £152.99 | £120 |
Direct prices checked 26 September 2026. The retailer's price at checkout applies.
Amazon prices as of 26 Sept 2026, 21:45 UTC. Product prices and availability are accurate as of the date/time indicated and are subject to change.
Detailed Reviews
Fogstar Drift 12V 105Ah
Best overall 100Ah: heated, Bluetooth, 10-year warranty
Capacity
105 Ah (1,344 Wh)
Continuous
100 A
Cycles
3,500 to 80%
Size / weight
260 x 168 x 209 mm, 10 kg
Pros
- Self-heating: warms the cells to 5°C before it charges, so it can charge in a cold van
- 10-year warranty
- Bluetooth app and IP67
- 10 kg, with UK support from Fogstar in Bromsgrove
Cons
- 100 A continuous: Fogstar rates it for inverters up to 1,000 W
- The warranty covers defects only, with no guaranteed capacity
- Fogstar publishes two parallel limits (16 on the product page, 4 on the spec sheet)
Renogy Core Mini 12.8V 100Ah
Best value 100Ah: smallest and lightest here
Capacity
100 Ah (1,280 Wh)
Continuous
100 A (300 A for 5 s)
Cycles
5,000 to 80%
Size / weight
229 x 138 x 213 mm, 9.9 kg
Pros
- One of the cheapest 100Ah batteries here, at about £148 per kWh
- Smallest and lightest in this list: 9.9 kg, 229 x 138 x 213 mm
- 5,000 cycles to 80% capacity
- Wires up to four in series and four in parallel
Cons
- No built-in Bluetooth: it needs Renogy's Battery Shunt 300 (sold as a £219.99 bundle)
- No heater: it stops charging below 0°C
- The 5-year warranty is prorated after the first 12 months
Renogy Core 12V 200Ah Bluetooth
Best value 200Ah: Bluetooth built in
Capacity
200 Ah (2,560 Wh)
Continuous
200 A (400 A for 10 s)
Cycles
5,000 to 80%
Size / weight
502 x 187 x 242 mm, 20.2 kg
Pros
- About £152 per kWh with Bluetooth built in
- 200 A continuous (400 A for 10 seconds): covers a motor mover, which Truma quotes at up to 150 A
- 5,000 cycles to 80% capacity
- Wires in series up to 48 V
Cons
- 502 mm long: it may not fit a standard battery box
- No heater: it stops charging below 0°C
- The 5-year warranty is prorated
Fogstar Drift ECO 12V 314Ah Bluetooth
Most capacity per pound: 4 kWh for about £430
Capacity
314 Ah (4,019 Wh)
Continuous
250 A
Cycles
6,000 to 80%
Size / weight
380 x 190 x 265 mm (with handles), 28 kg
Pros
- Lowest price per kWh here, at about £107
- 250 A continuous: Fogstar rates it for a 3,000 W inverter
- 6,000 cycles to 80% capacity
- Bluetooth and IP67
Cons
- 28 kg
- No heater: it won't charge below 0°C
- 6-year warranty, against 10 years on Fogstar's Drift range
Renogy Pro 12V 200Ah Self-Heating
Best for winter touring: charges from -20°C
Capacity
200 Ah (2,560 Wh)
Continuous
200 A (270 A for 30 s)
Cycles
5,000 to 80%
Size / weight
467 x 212 x 208 mm, 23 kg
Pros
- Self-heating: charges from -20°C (the heater needs more than 6 A of charge current)
- Bluetooth, IP67 and a flame-retardant (UL94 V-0) case
- 7-year warranty
- Only 208 mm tall
Cons
- £230 more than the Core 200Ah
- Parallel only: it can't be wired in series
- The 7-year warranty is prorated
Fogstar Drift Seat Base 12V 230Ah
Best underseat: 2.9 kWh in a 187.5 mm tall case
Capacity
230 Ah (2,944 Wh)
Continuous
250 A
Cycles
4,000 to 80%
Size / weight
275 x 315 x 187.5 mm, 25 kg
Pros
- Made to fit under the front seat base of vans including the VW T6, Transit Custom, Vito, Sprinter, Ducato, Boxer and Relay (Fogstar says measure first)
- 2.9 kWh in a case 187.5 mm tall
- Heated, with Bluetooth and active balancing
- 10-year warranty
Cons
- About £238 per kWh, more than twice the ECO 314Ah
- 25 kg
- No IP rating published
Roamer 105SMART5 MAX
Premium: 300 A from a 100Ah-size battery
Capacity
105 Ah (1,344 Wh)
Continuous
300 A
Cycles
Not published
Size / weight
260 x 173 x 229 mm, 11 kg
Pros
- 300 A continuous: Roamer says it is the only battery its size that can run a 3,000 W inverter
- 12-year warranty
- Bluetooth, CANbus and IP65
- UK service centre in Leeds
Cons
- About £289 per kWh, the highest here
- Backordered when we checked (due 5 October)
- No published cycle life, and the warranty is prorated
ECO-WORTHY 12V 100Ah Bluetooth
Budget pick with Bluetooth, on Amazon
Capacity
100 Ah (1,280 Wh)
Continuous
100 A
Cycles
3,000 to 5,000 (depth not stated)
Size / weight
260 x 168 x 209 mm (Group 24), 10.5 kg
Pros
- One of the cheapest named-brand 100Ah batteries with Bluetooth
- Standard Group 24 size, which fits most battery boxes
- Low-temperature charge protection
Cons
- 3-year warranty, the shortest here
- 100 A continuous: about a 1,000 W inverter
- The cold-charging limit is published two ways (0°C on the spec sheet, -7°C on Amazon)
How Big a Lithium Leisure Battery Do You Need?
Add up what you use in a day, in amp-hours (Ah). A compressor fridge like the Dometic CFX5 35 uses about 18.5 Ah a day (Dometic's figure). With lights, a water pump, and phone and laptop charging, a typical van uses around 50 Ah a day; Fogstar's worked example comes to 57.7 Ah.
A lithium battery gives you 90–100% of its rated capacity, against 60–70% for AGM (Practical Motorhome). At 50 Ah a day, using 90% of a lithium battery and half of an AGM:
| Battery | Usable | Days at 50 Ah/day (no charging) |
|---|---|---|
| 100Ah AGM | 50 Ah | 1 |
| 100Ah lithium | 90 Ah | 1.8 |
| 200Ah lithium | 180 Ah | 3.6 |
| 314Ah lithium | 283 Ah | 5.7 |
Solar panels and driving put charge back in, so the battery only has to cover the days you go without either. For a panel to charge from, see portable solar panels.
Lithium vs AGM Leisure Batteries
Victron makes both, which makes its datasheets a fair like-for-like comparison:
| Victron AGM 110Ah | Victron Lithium 100Ah | |
|---|---|---|
| Weight | 32 kg | 14 kg |
| Cycles at 80% depth of discharge | 400 | 2,500 |
| Cycles at 50% depth of discharge | 600 | 5,000 |
Lithium costs more to buy but less per cycle. As a rough guide, an AGM battery at about £215 used to 50% for 600 cycles works out at around 36p a cycle; a £440 lithium battery used to 80% for 2,500 cycles is about 18p. AGM still makes sense if you are almost always on hook-up, or if your charging system can't be changed.
Before You Switch: What Else Has to Change
Your mains charger or power supply
It needs a lithium setting. Many fitted units, such as the Sargent EC328, use a fixed lead-acid profile, and a lead-acid charger will only partly recharge lithium (12 Volt Planet). Desulphate or recondition modes can damage it.
Charging from the engine
Euro 6 vans (roughly 2016 on) have smart alternators that a split-charge relay can't follow, so fit a DC-DC charger. Size the alternator at about twice the charger's output (a 50 A charger needs 100 A+).
Cold weather
Most lithium batteries won't charge below 0°C (Victron says +5°C). If the battery lives somewhere cold, buy a self-heating model or mount it inside the living area, as Practical Motorhome advises.
Motor movers and big inverters
A Truma Mover XT peaks at 150 A, and a 100 A battery can shut down under that load. Pick a battery rated for 200–300 A continuous, and check your mover maker's guidance.
Warranty and payload
Some habitation warranties exclude modified vehicles (Swift's does), and habitation checks cover battery performance. Check before you change anything, and check your payload if you add weight.
The full cost
Battery, DC-DC charger, lithium-ready mains charger, solar controller and fitting can pass £1,000 (Practical Motorhome). Budget for the whole system, not just the battery.
Don't want to rewire your van?
A portable power station gives you mains sockets and USB with no installation, and charges from solar.