# Marine battery Varta LA50 12V 50Ah 540A AGM ![Marine battery Varta LA50 12V 50Ah 540A AGM](https://baterias.com/4429-home_default/battery-varta-la50-12v-50ah-540a.jpg) > Varta LA50 marine battery 12V 50Ah 540A AGM. Official Varta Distributor. Professional Dual Purpose AGM range. Cranking and house duties. **Category:** [Boat Batteries](https://baterias.com/gb/boat-batteries) β†’ [VARTA](https://baterias.com/gb/varta) - **Canonical URL**: https://baterias.com/gb/battery-varta-la50-12v-50ah-540a - **Language**: en-GB - **Brand**: VARTA - **Reference**: BCOM-VARTA-LA50 - **EAN**: 4016987169919 - **MPN**: LA50 - **Last updated**: 2026-10-28 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | VARTA | | Reference | LA50 | | Model | Professional Dual Purpose AGM | | Voltage (V) | 12 V | | Largo | 207 mm | | Ancho | 175 mm | | Alto | 190 mm | | TecnologΓ­a | AGM | | EAN | 4016987169919 | | Terminal layout | Positive terminal on the right | | Hold down | B13 | | Cold cranking amps (EN) | 540 A | | Capacity (C20) | 50 Ah (c20) | | Additional ETN | 840050054K312 | ## Quick description **Varta LA50 12V 50Ah 540A** is a marine battery, vibration- and deep-discharge resistant, suitable both for outboard engine starting and for onboard auxiliary services (navigation lights, GPS, sonar, fridge). Sealed and maintenance-free. ## Why this marine battery? - **Marine design** built for boat swell and vibration - **Dual function** starts the engine and powers onboard services - **Sealed and safe** maintenance-free even when the boat rolls πŸ”Œ Voltage 12 V ⚑ Capacity 50 Ah C20 πŸ”‹ Cold cranking 540 A EN-1 πŸ“ Dimensions 207Γ—175Γ—190 mm βš™οΈ Technology AGM 🧭 Polarity Positive on the right βš–οΈ Weight 14,72 kg 🏷️ Model Professional Dual Purpose AGM ## Description ## Varta LA50 Professional Dual Purpose AGM 50Ah 540A 12V Battery 12*V* Voltage 50*Ah* Capacity 540*A* Cold cranking The **Varta LA50 battery** is the **12 V**, **50 Ah** model delivering **540 A** of cold cranking power (EN), from Varta's **Professional Dual Purpose AGM** range, designed for motorhomes, boats and auxiliary power equipment. Its 207 Γ— 175 Γ— 190 mm dimensions and positive terminal on the right make it the exact replacement for the 50 Ah battery fitted as standard in many vehicles. - Ideal for motorhomes, boating and leisure power. - Dual cycle: it both starts the engine and powers auxiliary equipment. - More on-board running time than a conventional starter battery. - Withstands deep discharges and repeated recharging without degrading. ### Applications of the Varta LA50 battery With 50 Ah, the Varta LA50 is sized for motorhomes, boats and auxiliary power equipment, as a direct replacement for the original battery. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a B13 hold-down. ### Format and fitting of the Varta LA50 The Varta LA50 is built in the 207 Γ— 175 Γ— 190 mm format. The positive terminal on the right determines which side the cables run to: it is the detail that causes the most buying mistakes, so it is worth checking before ordering. It uses a B13 hold-down, the system that anchors it to the vehicle's battery tray. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### The Varta LA50 and the Professional Dual Purpose AGM range The **Professional Dual Purpose AGM** range combines dual purpose (starting + leisure supply) with AGM technology, which brings greater resistance to cycling, zero maintenance and safety against spillage. It is the demanding choice for motorhomes and boats that need to start the engine and sustain a heavy equipment load with maximum durability. Unlike a pure starter battery, this range withstands deep discharges and repeated recharging without degrading: exactly what a motorhome or a boat drawing power with the engine off requires. It therefore combines starting and leisure supply in a single dual-cycle battery. ### Why choose a Varta battery Manufactured by Clarios to German standards, Varta is one of the world's benchmark brands in starter batteries and an OEM supplier to the leading car makers. Choosing it as a replacement guarantees specifications equal to or better than the originals. Varta combines more than a century of experience with Clarios's industrial production: it is the battery many manufacturers choose as standard and one of the most recommended by workshops. Like any lead-acid battery, it is 100% recyclable. Varta is Europe's leading manufacturer of starter batteries: its production volume and quality controls guarantee consistent reliability batch after batch, something own-brand labels cannot always promise. ### Manufacturer's warranty The Varta LA50 battery comes with the **official manufacturer warranty**. ### Care and maintenance In leisure use, avoiding discharges below 50% of capacity multiplies the number of cycles. A suitable charger and, where possible, a solar regulator keep it healthy through the seasons when it sees less use. To extend its life, recharge it as soon as possible after each discharge and never leave it flat over the winter. A trickle charger is the best investment for getting many cycles out of it. ## Frequently asked questions ### Is the LA50 model AGM? What does this technology offer? Yes. The LA50 from Varta uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for boats with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions. ### Is this a starting or a service (leisure) battery? Dual purpose: it can start the engine and also work as a service battery, handy on boats with a single battery. On boats with two circuits the ideal is one starting battery and one service battery. ### In what position can it be installed on the boat? Being AGM, it is sealed and does not spill: it can be mounted tilted (never upside down) and copes well with vibration and wave impacts. Secure it firmly and keep the terminals away from water. ### What are the dimensions of the Varta LA50 battery? Dimensions (length Γ— width Γ— height) are 207Γ—175Γ—190 mm β€” also written as 207x175x190 mm and correspond to the European L1 case size β€” following the European DIN standard. Always measure the space in your boat before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals. ### What polarity does the Varta LA50 battery have? Polarity: positive on the right. To identify it, place the battery in front of you with the terminals facing you and check which side the positive (+, marked with a red ring) is on. Before buying, verify the polarity matches your current battery: switching polarity forces longer cables or system reconfiguration, with short-circuit risk. ## Equivalent batteries - [VARTA A9](https://baterias.com/gb/battery-varta-a9-12v-50ah-540a) - [EXIDE EK500](https://baterias.com/gb/battery-exide-ek500-12v-50ah) - [TUDOR TK500](https://baterias.com/gb/battery-tudor-tk500-12v-50ah) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team β€” automotive battery specialists since 2012. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-10-29*