Your leisure battery is the heart of any van life electrical system. It powers your lights, fridge, phone chargers, water pump, and inverter — all the things that make living in a van comfortable. With the UK's long, dark winters meaning less solar charging, choosing the right battery is critical.
This guide covers the best leisure batteries available on Amazon UK, from budget-friendly AGM models to premium LiFePO4 lithium systems that can last 2,000+ cycles.
Final Verdict
Best Premium: Battle Born Batteries 100Ah
Pros:
- Industry leader in lithium
- 3000+ cycles
- Proven reliability
- Excellent BMS
- 10-year warranty
Cons:
- Premium at ~£649
- Slightly heavier than competitors
- No Bluetooth app
What You'll Need
Choosing the Right Leisure Battery
Capacity (Ah): Measured in Amp Hours. A 100Ah battery can theoretically deliver 100A for one hour, or 10A for 10 hours. Rule of thumb: plan for 200–300Wh per day of use.
Chemistry: Lead-acid (cheaper, heavier), AGM (sealed, maintenance-free), or LiFePO4 (lighter, more cycles, higher upfront cost).
Depth of Discharge (DoD): How much of the battery you can safely use. Lead-acid: 50%. AGM: 50–70%. LiFePO4: 80–100%.
Internal BMS: A Battery Management System protects against overcharge, over-discharge, and short circuits. Essential for lithium batteries.
Step by Step
Installing Your Leisure Battery
- Disconnect all power. Remove the engine battery.
- Choose location. Dry, ventilated, near your DWCA.
- Secure the battery. Use the battery strap or a custom wooden tray.
- Connect positive cable. 50mm² for 100Ah, with fuse within 300mm.
- Connect negative cable. To chassis earth.
- Test voltage. Should read 13.2V+ when fully charged.
- Connect your DWCA. Set the charge/discharge voltages correctly.
Final Thoughts
Top Pick: Vox 100Ah LiFePO4
Pros:
- Best price-to-performance ratio at £329.99
- True 100Ah with 100% DoD
- Built-in BMS with Bluetooth monitoring
- 2000+ cycles to 80%
- Compact and lightweight (9kg)
Cons:
- Brand less known than Battle Born
- UK warranty claims can be slow
- BMS can be overly conservative
Best Premium: Battle Born Batteries 100Ah
Pros:
- Industry leader in lithium
- 3000+ cycles
- Proven reliability
- Excellent BMS
- 10-year warranty
Cons:
- Premium at ~£649
- Slightly heavier than competitors
- No Bluetooth app
Deep Dive: Varta Pro lithium 70Ah
Brand: Varta Category: leisure batteries Warranty: Typically 2–3 years for budget, 5+ years for premium
Product Specifications
| Specification | Details |
|---|---|
| Brand | Varta |
| Price | £549.99 |
| Rating | 4.7/5 (234 reviews) |
| Key Features | 70Ah capacity, Lithium iron phosphate, Built-in BMS, 2000+ cycles |
Key Features Explained
- 70Ah capacity
- Lithium iron phosphate
- Built-in BMS
- 2000+ cycles
Who Is This For?
- Varta Pro lithium 70Ah is ideal for van lifers seeking 70ah capacity
- Varta Pro lithium 70Ah is ideal for van lifers seeking lithium iron phosphate
- Varta Pro lithium 70Ah is ideal for van lifers seeking built-in bms
- Varta Pro lithium 70Ah is ideal for van lifers seeking 2000+ cycles
Deep Dive: Battle Born Batteries 100Ah
Brand: Battle Born Category: leisure batteries Warranty: Typically 2–3 years for budget, 5+ years for premium
Product Specifications
| Specification | Details |
|---|---|
| Brand | Battle Born |
| Price | £649.00 |
| Rating | 4.8/5 (456 reviews) |
| Key Features | 100Ah capacity, LiFePO4, 3000+ cycles, Built-in BMS |
Key Features Explained
- 100Ah capacity
- LiFePO4
- 3000+ cycles
- Built-in BMS
Who Is This For?
- Battle Born Batteries 100Ah is ideal for van lifers seeking 100ah capacity
- Battle Born Batteries 100Ah is ideal for van lifers seeking lifepo4
- Battle Born Batteries 100Ah is ideal for van lifers seeking 3000+ cycles
- Battle Born Batteries 100Ah is ideal for van lifers seeking built-in bms
Deep Dive: Vox 100Ah LiFePO4
Brand: Vox Category: leisure batteries Warranty: Typically 2–3 years for budget, 5+ years for premium
Product Specifications
| Specification | Details |
|---|---|
| Brand | Vox |
| Price | £329.99 |
| Rating | 4.4/5 (678 reviews) |
| Key Features | 100Ah, Compact design, Built-in BMS, Budget lithium |
Key Features Explained
- 100Ah
- Compact design
- Built-in BMS
- Budget lithium
Who Is This For?
- Vox 100Ah LiFePO4 is ideal for van lifers seeking 100ah
- Vox 100Ah LiFePO4 is ideal for van lifers seeking compact design
- Vox 100Ah LiFePO4 is ideal for van lifers seeking built-in bms
- Vox 100Ah LiFePO4 is ideal for van lifers seeking budget lithium
Deep Dive: Optima 8020-163 RedTop
Brand: Optima Category: leisure batteries Warranty: Typically 2–3 years for budget, 5+ years for premium
Product Specifications
| Specification | Details |
|---|---|
| Brand | Optima |
| Price | £249.99 |
| Rating | 4.5/5 (345 reviews) |
| Key Features | 55Ah, AGM technology, Deep cycle, Vibration resistant |
Key Features Explained
- 55Ah
- AGM technology
- Deep cycle
- Vibration resistant
Who Is This For?
- Optima 8020-163 RedTop is ideal for van lifers seeking 55ah
- Optima 8020-163 RedTop is ideal for van lifers seeking agm technology
- Optima 8020-163 RedTop is ideal for van lifers seeking deep cycle
- Optima 8020-163 RedTop is ideal for van lifers seeking vibration resistant
Deep Dive: A Lithium 100Ah
Brand: A Lithium Category: leisure batteries Warranty: Typically 2–3 years for budget, 5+ years for premium
Product Specifications
| Specification | Details |
|---|---|
| Brand | A Lithium |
| Price | £399.99 |
| Rating | 4.3/5 (189 reviews) |
| Key Features | 100Ah, LiFePO4, 2000+ cycles, Built-in BMS |
Key Features Explained
- 100Ah
- LiFePO4
- 2000+ cycles
- Built-in BMS
Who Is This For?
- A Lithium 100Ah is ideal for van lifers seeking 100ah
- A Lithium 100Ah is ideal for van lifers seeking lifepo4
- A Lithium 100Ah is ideal for van lifers seeking 2000+ cycles
- A Lithium 100Ah is ideal for van lifers seeking built-in bms
Summary
This comprehensive guide has reviewed the top products in the leisure batteries category. Whether you're a budget-conscious van lifer or looking for the best premium option, we've covered everything you need to make an informed decision.
