# VARTA Professional Deep Cycle AGM Batteries > Varta Professional Deep Cycle AGM batteries for marine and motorhome: deep-cycle AGM that withstands deep discharges and powers your equipment. Discover them! **Category:** [Start](https://baterias.com/gb/beginning) → [Batteries](https://baterias.com/gb/batteries) → [VARTA batteries](https://baterias.com/gb/batteries-varta) - **Canonical URL**: https://baterias.com/gb/batteries-varta-professional-deep-cycle-agm - **Language**: en-GB ## Description The **Varta Professional Deep Cycle AGM batteries** are Varta's service range designed to power onboard equipment in **marine and motorhome** applications. Unlike a conventional starter battery, they are built to withstand repeated **deep discharges**: they deliver energy steadily for hours to run fridges, lights, water pumps, inverters, fish finders, televisions or any electrical load on your boat or campervan, and then recharge without losing capacity. In essence, they are the reliable power source for living aboard without always depending on the engine. ### Professional Deep Cycle AGM: the same product, Varta's new naming In 2025 Varta restructured its catalogue and stopped naming its batteries by colour or series to name them by **technology**. If you used to look for this battery by its former leisure and service range name, you should know that **"Professional Deep Cycle AGM" is exactly the same deep-cycle family as always**, now with a name that directly describes what it does. Neither the product nor its quality has changed: only the way it is named. In other words, the customer arriving in search of Varta's former *Professional deep-cycle AGM range* is in the right place. We keep the name **Professional Deep Cycle AGM** so there is no confusion: you are asking for the same thing as before, with the same deep-cycle AGM technology and the same brand guarantee. If you had noted down an old reference, you can still use it to locate your model within this category. ### What deep-cycle AGM technology is AGM stands for **Absorbent Glass Mat**. In these batteries the electrolyte is not free-flowing liquid but held in a thin glass-fibre mat between the plates. This brings very specific advantages for onboard use: - **Sealed and maintenance-free:** no need to top up water or watch levels. - **Spill-proof:** with no free acid, they can be fitted in enclosed spaces and in different positions, which is key in boats and motorhomes. - **Resistant to vibration and knocks:** ideal for the sea and for roads with uneven surfaces. - **Deep cycling:** they cope with being deeply discharged and recharged many times without degrading the way a starter battery would. "Deep cycle" is exactly what you need when the battery works as an **auxiliary service** supply: it discharges gradually to power your equipment and charges again, cycle after cycle, throughout its service life. ### Advantages of choosing a Varta Professional Deep Cycle AGM - **Real autonomy:** more hours of energy for your loads without starting the engine. - **Varta reliability:** one of the world's benchmark battery brands, with factory quality control. - **Long cycling life:** designed for hundreds of charge and discharge cycles. - **Flexible, safe installation:** sealed, with no gassing in normal use and suitable for indoor mounting. - **Efficient recharging:** they readily accept charge from the alternator, solar panels or a dockside charger. ### How to choose the right battery To get your **marine and motorhome battery** right, look at these points: - **Capacity (Ah):** the more amp-hours, the more autonomy. Work out the daily consumption of your equipment and choose with a margin. - **Battery dimensions:** check the length, width and height so it fits the existing space or tray. - **Terminals and polarity:** check the terminal type and the position of the posts (positive/negative) so you can connect without trouble. - **Intended use:** pure auxiliary service, or mixed starting/service. If you are unsure about the dimensions or the compatible model, you can use the **registration finder** on the website: enter your motorhome's registration and we will show you the batteries that fit. That way you avoid mistakes in size or capacity before buying. Feature Varta Professional Deep Cycle AGM Technology Deep-cycle AGM Main use Auxiliary service in marine and motorhome Maintenance Sealed, maintenance-free Mounting Flexible, suitable for indoors Deep discharges Yes, designed for cycling ### Is the Professional Deep Cycle AGM the same as Varta's old deep-cycle range? Yes. With the 2025 restructuring, Varta moved to naming its batteries by technology. The **Professional Deep Cycle AGM** is the same deep-cycle AGM service family that already existed; only the name changed, not the product. ### Can I use this battery to start the engine? They are optimised for **deep-cycle service** (powering equipment through deep discharges). Some allow mixed use, but if your priority is starting, a dedicated starter battery is better. Check each model's data sheet. ### Does an AGM battery need maintenance? No. They are **sealed, maintenance-free** batteries: there is no need to add water or check electrolyte levels. Simply keep them well charged. ### How do I know which capacity and size I need? Add up the daily consumption of your equipment to estimate the **Ah** and measure the installation space. If you have a motorhome, use the **registration finder** on the website to see compatible models. ### Discover our Varta Professional Deep Cycle AGM selection Explore the products in this category below and choose the **Varta Professional Deep Cycle AGM battery** that best suits your boat or motorhome. Reliable energy, deep-cycle AGM technology and the backing of a leading brand so you can enjoy your trips without running out of power. ## Products in this category | Product | Brand | Price | |---|---|---| | [Marine battery Varta LA80 12V 77Ah AGM](https://baterias.com/gb/battery-varta-la80agm-12v-80ah-800a) | VARTA | 154,80 € | | [Marine battery Varta LAD210 12V 210Ah AGM](https://baterias.com/gb/battery-varta-lad210-12v-210ah-1180a) | VARTA | 822,70 € | ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2012. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-10-21*