What does AGM mean on a battery?

AGM (Absorbent Glass Mat) is a sealed lead-acid technology where the electrolyte is absorbed into a glass fibre mat. It is leak-proof, withstands more charge/discharge cycles and tolerates heat better than conventional batteries. AGM is fitted to caravans with advanced Start-Stop and regenerative braking.

Which caravans use AGM batteries?

caravans with advanced Start-Stop, regenerative braking or high electrical loads (advanced driver assists, permanent climate control, heated seats). Brands like BMW, Audi, Mercedes-Benz and Volvo have fitted AGM as standard since around 2010 on their efficient-engine models.

How long does an AGM battery last?

Between 5 and 8 years under normal conditions — 50% to 100% longer than a conventional battery. Real-world life depends on Start-Stop usage, extreme temperatures and short-trip frequency. If the vehicle does many short trips or has very active Start-Stop, check the battery from year 5 onwards.

Can I fit an AGM in place of an EFB or conventional battery?

Yes — AGM can replace EFB or conventional batteries (AGM is the superior technology). What you must NEVER do is the opposite: fit an EFB or conventional in a vehicle that originally had AGM — it would degrade within months and Start-Stop would fail.

Do I need to register the AGM battery when I replace it?

Yes — most modern cars with a BMS (Battery Management System) require the new battery to be registered via OBD so the alternator applies the correct charging profile. Without this step the battery will be charged incorrectly and lifespan will be cut significantly. Any workshop with a basic OBD tool can do it (~£10-20).

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AGM caravan batteries

AGM caravan batteries combine cyclic capacity with cranking — ideal as leisure batteries for fridge, lights, water pump and USB outlets.

Deep cycling: built to discharge and recharge repeatedly without losing life.
Fully sealed: safe to install inside the caravan — no harmful gases.
Compatible with alternator chargers, solar panels and mains chargers.

See all AGM batteries →

Compatible batteries

Before you buy: check 3 key points

Although the batteries shown are sourced from information provided by manufacturers, we recommend checking on your current battery:

Dimensions (length × width × height, including terminals and protrusions)
The dimensions shown are the maximum of the battery and include the height of the terminals, small ridges at the base and any lateral protrusions. Measure your current battery completely, from edge to edge. The new one must be the same size or slightly smaller — never larger, it would not fit in the housing.
Positive terminal (left or right viewed from the front — check the battery photo carefully)
Stand facing the battery, with the manufacturer's label facing you and the terminals on top. Locate the terminal marked with +: if it is on your right, it is "positive right"; if it is on your left, it is "positive left". Do not rely on how the battery is mounted in the car — the position is always measured looking only at the battery itself.
Technology (AGM, EFB or conventional — Start-Stop requires AGM or EFB)
Depending on the manufacturer, the same technology may be labelled differently: AGM may also appear as VRLA, AGM Start-Stop or AGM Deep Cycle. EFB may appear as EF, EFB+ or Enhanced Flooded Battery. Conventional may appear as SLI, Lead-Acid, Wet or Standard. If your vehicle has Start-Stop, the battery must be AGM or EFB — never conventional.

If you have any questions, just ask us and we'll be glad to advise you with no obligation.

This engine comes with an AGM/EFB battery as standard: the car's charging system requires it even without Start-Stop. If in doubt, message us and we will confirm.

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Online batteries · Varta distributor · Express 24h delivery · Batteries by capacity (Ah) · by size

AGM caravan batteries

Compatible batteries

Caravan battery Fullriver DCG120-12B 12V 120Ah AGM

Caravan battery Fullriver DCG135-12 12V 135Ah AGM

Caravan battery Fullriver DCG140-8 8V 140Ah AGM

Caravan battery Fullriver DCG160-12 12V 160Ah AGM

Caravan battery Fullriver DCG170-12 12V 170Ah AGM

Caravan battery Fullriver DCG180-12 12V 180Ah AGM

Caravan battery Fullriver DCG190-6 6V 190Ah AGM

Caravan battery Fullriver DCG200-12 12V 200Ah AGM

Caravan battery Fullriver DCG200-6 6V 200Ah AGM

Caravan battery Fullriver DCG220-12 12V 220Ah AGM

Wheelchair battery Fullriver DCG24-12 12V 24Ah AGM

Caravan battery Fullriver DCG240-12 12V 240Ah AGM

Wheelchair battery Fullriver DCG26-12 12V 26Ah AGM

Caravan battery Fullriver DCG280-6 6V 280Ah AGM

Wheelchair battery Fullriver DCG40-12 12V 40Ah AGM

Wheelchair battery Fullriver DCG50-12 12V 50Ah AGM

Wheelchair battery Fullriver DCG51-12 12V 51Ah AGM

Wheelchair battery Fullriver DCG55-12 12V 55Ah AGM

Wheelchair battery Fullriver DCG56-12 12V 56Ah AGM

Wheelchair battery Fullriver HC50 12V 50Ah 560A AGM

Wheelchair battery Fullriver HC55 12V 55Ah 620A AGM

Wheelchair battery Fullriver HC60B 12V 60Ah 625A AGM

Wheelchair battery Q-battery 12LCP-50 12V 50Ah AGM

Wheelchair battery Q-battery 12LCP-56 12V 56Ah AGM

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