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What size leisure battery for a caravan

Updated: October 2026

You can list the lights, the water pump, and the television, and you may also have a motor mover that runs for a few minutes at a time. What size leisure battery for a caravan starts with that day’s watt-hours, not with the largest sticker in the search. Title ampere-hours are not the ampere-hours you should plan to use, and a capacity measured over 100 hours is not the same claim as one measured over 20. Prices stay on the [Leisure battery comparison](/hub/electrical-equipment/leisure-battery). The examples below are from the clubs and the mover manuals, not a test we ran on your van. A qualifying purchase can earn a commission at no extra cost to you.

You can list the lights, the water pump, and the television, and you may also have a motor mover that runs for a few minutes at a time.

Our top picks

DC HOUSE DC HOUSE 100 Ah

Best overall

DC HOUSE DC HOUSE 100 Ah
9.2/10about £159.99
View offer
PUPVWMHB PUPVWMHB 300 Ah

Rank 2

PUPVWMHB PUPVWMHB 300 Ah
9.2/10about £279.00
View offer
Varta Varta LFS75 75 Ah

Rank 3

Varta Varta LFS75 75 Ah
0.0/10about £94.13
View offer
On this page
  1. 1.Turn a day of appliances into ampere-hours
  2. 2.Usable capacity and the rate on the label
  3. 3.A motor mover is not just a bigger Ah
  4. 4.Where 6 Ah, 75 Ah, 100 Ah, and 300 Ah land

Turn a day of appliances into ampere-hours

Add each appliance’s watts, multiply by the hours you actually run it, and you have watt-hours. Divide by 12 for a 12 V battery and you have ampere-hours. The Caravan and Motorhome Club’s own example is two 8 W lights for five hours, which is 80 Wh, or about 6.7 Ah. That shows the method. It does not mean a caravan evening is two lights. Yuasa’s textbook day is 325 Wh, about 27 Ah, before any margin for how deeply you discharge. If your list reaches that 325 Wh, the rating you shop for is still larger than 27 Ah on a flooded or AGM plan. The figure you just calculated is what you use, not what you must buy.

Usable capacity and the rate on the label

For flooded and AGM batteries the planning habit is to use about half the rating, unless the maker says otherwise. Yuasa’s 27 Ah day then wants roughly double that in rated ampere-hours, which is why a cautious plan sits above 54 Ah. Lithium is often used more deeply, so the same evening may fit a smaller rating. That adjustment is on lithium or lead-acid. It is not one official percent you can stamp on every brand. Practical Caravan’s cold note is about 20 percent less capacity near 0 °C, as their rule of thumb, not as a figure printed on these six listings. A lead-acid capacity taken over 100 hours, called C100, reads higher than the same battery measured over 20 hours, called C20. Two titles that both say 110 Ah can be different batteries if one is C100 and the other is C20. None of the six listings prints C100 or C20, so this page does not invent a rate for them.
DC HOUSE DC HOUSE 100 Ah

Testsieger

DC HOUSE DC HOUSE 100 Ah
9.2/10about £159.99
View offer

A motor mover is not just a bigger Ah

A mover draws a high current for a short time. That is a separate check from the evening sum. AL-KO’s Ranger guidance asks for an AGM battery of at least 80 Ah or 100 Ah, depending on the version. Truma’s Mover SE manual recommends about 80 Ah or more and quotes a peak around 150 A. The battery management limits in this set are 5 A, 8 A, 100 A, 100 A, and 200 A. The 5 A and 8 A packs are out for a mover. Truma’s peak example sits above a 100 A continuous figure, so you read your own manual before you treat a 100 Ah lithium as the mover battery.

Where 6 Ah, 75 Ah, 100 Ah, and 300 Ah land

The Club’s 6.7 Ah lighting example is about one full discharge of a 6 Ah pack. That is why the ERYY 6 Ah listing and the ECO-WORTHY 8 Ah listing are small-load products, not van batteries. They are not enough once a pump joins the list. The Varta title says 75 Ah. At a 50 percent habit that is about 37 Ah you plan to use. The two DC HOUSE listings say 100 Ah. On a lithium plan that uses more of the rating, that can be several modest evenings. The PUPVWMHB title says 300 Ah and the table says 3,840 Ah, so 300 Ah is not a settled figure. The listed weight on that row is 26.8 kg before leads.

Common questions

Is 60 Ah enough?
It can be, for a short trip with a small load, if the usable ampere-hours cover your sum. At a 50 percent habit, 60 Ah is about 30 Ah you plan to use, which sits close to Yuasa’s 27 Ah textbook day and gets tight once you add a second night. If your own watt-hours divided by 12 already exceed that, 60 Ah is the battery you have outgrown.
Do I need more than 100 Ah for a mover?
Read the mover manual before you add ampere-hours. AL-KO asks for at least 80 Ah or 100 Ah of AGM, depending on the Ranger version. Truma recommends about 80 Ah or more and quotes a peak around 150 A. A 100 A battery management system sits below that peak, so ampere-hours alone do not clear the manual.
What is C100 doing on a title?
C100 means the ampere-hours were counted over 100 hours. On a lead-acid battery that slower test usually prints a higher number than C20, the 20-hour rate. None of the six listings here prints C100 or C20. Ask which rate the sticker uses before you compare two numbers that look alike.
Will a bigger battery fit and stay inside the payload?
Ampere-hours do not describe the case or the kilograms. Measure the hole, including the posts and the lid, and read the payload plate before you buy the next size up. The 300 Ah listing is 26.8 kg before leads. The Group 24 listing prints no millimetres, so the group name is not a fit.
Can the 6 Ah or 8 Ah listing be enough if I only use lights?
Only in the narrow sense of the Club’s example. Two 8 W lights for five hours are about 6.7 Ah, so a 6 Ah battery is about one such day if you used it all, which is not a habit to plan around. The moment a pump joins the list, you have left that example.

Related pages

Leisure battery buying guide

How to charge a leisure battery

Leisure battery

Best leisure battery: match ampere-hours to the job

Lithium or lead-acid leisure battery: which one fits

Sources

Public UK sources are listed below. Shelf prices and star lines are the amazon.co.uk figures checked on 21 October 2026.

  1. Camping and Caravanning Club: leisure batteries (retrieved 21 October 2026)
  2. Camping and Caravanning Club: charging a leisure battery (retrieved 21 October 2026)
  3. The AA: caravan leisure batteries (retrieved 21 October 2026)
  4. Yuasa UK: how to choose a leisure battery (retrieved 21 October 2026)
  5. NCC verified battery list (retrieved 21 October 2026)
  6. GOV.UK: batteries (retrieved 21 October 2026)
  7. GOV.UK: recycling batteries and electrical waste (retrieved 21 October 2026)
  8. Caravan and Motorhome Club: batteries (retrieved 21 October 2026)