# Marine battery Varta LA170 12V 170Ah 1000A AGM ![Marine battery Varta LA170 12V 170Ah 1000A AGM](https://baterias.com/4433-home_default/battery-varta-la170-12v-170ah-1000a.jpg) > Varta LA170 marine battery 12V 170Ah 1000A 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-la170-12v-170ah-1000a - **Language**: en-GB - **Brand**: VARTA - **Reference**: BCOM-VARTA-LA170 - **EAN**: 4016987169810 - **MPN**: LA170 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | VARTA | | Reference | LA170 | | Model | Professional Dual Purpose AGM | | Voltage (V) | 12 V | | Largo | 513 mm | | Ancho | 223 mm | | Alto | 223 mm | | TecnologΓ­a | AGM | | EAN | 4016987169810 | | Hold down | B00 | | Cold cranking amps (EN) | 1000 A | | Capacity (C20) | 170 Ah (c20) | | Additional ETN | 840170100K312 | ## Quick description **Varta LA170 12V 170Ah 1000A** is a marine battery with reinforced anti-vibration case for moorings and offshore use. Tolerates the typical daily cycles on a boat (engine start + night-time services such as lights, sonar, fridge) and holds voltage even when the hull is rolling in open sea. ## 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 170 Ah C20 πŸ”‹ Cold cranking 1000 A EN-1 πŸ“ Dimensions 513Γ—223Γ—223 mm βš™οΈ Technology AGM 🧭 Polarity Positive on the left βš–οΈ Weight 47,49 kg 🏷️ Model Professional Dual Purpose AGM ## Description ## Varta LA170 Professional Dual Purpose AGM 170Ah 1000A 12V Battery 12*V* Voltage 170*Ah* Capacity 1000*A* Cold cranking The **Varta LA170 battery** is the **12 V**, **170 Ah** model delivering **1000 A** of cold cranking power (EN), from Varta's **Professional Dual Purpose AGM** from Varta, designed for motorhomes, boats and auxiliary power equipment. Its 513 Γ— 223 Γ— 223 mm dimensions make it the exact replacement for the 170 Ah battery fitted as standard on many vehicles. - Dual cycle: it both starts the engine and powers auxiliary equipment. - Ideal for motorhomes, boating and leisure power. - Withstands deep discharges and repeated recharging without degrading. - More on-board running time than a conventional starter battery. ### Applications of the Varta LA170 battery The Varta LA170 covers the needs of motorhomes, boats and auxiliary power equipment with 170 Ah of capacity and a construction built for that use. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a B00 hold-down. ### Format and fitting of the Varta LA170 In format, the Varta LA170 measures 513 Γ— 223 Γ— 223 mm (length Γ— width Γ— height). It uses a B00 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 LA170 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 Choosing Varta means going with the reference the car manufacturer itself signed off in the first place. Against own-brand batteries, the difference is not the purchase price but how many winters the battery lasts before it leaves you stranded. Behind Varta is Clarios, one of the largest manufacturers of starter batteries in the world and a supplier to the assembly lines of numerous car brands. That German engineering heritage translates into reliable starting year after year. Varta's production combines automated lines with verification of more than 100 parameters per unit; that traceability is what underpins its reputation for reliable starting throughout the battery's life. ### Manufacturer's warranty The Varta LA170 battery comes with the **official manufacturer warranty**. ### Care and maintenance In leisure applications, avoiding discharges below 50% of capacity multiplies the number of cycles the battery will deliver. A suitable charger and, where possible, a solar regulator keep it healthy through the quieter seasons. 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 this battery AGM? What is it for? Yes. The LA170 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. ### How do I fit the LA170 model in my boat? In most boats it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on our blog. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (βˆ’) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation β€” match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (βˆ’). On boats with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### How many years does this battery last? Expected lifespan of the Varta LA170 is 5 to 8 years in mild-climate boat use with Start-Stop. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured. ### What are the measurements of the LA170 model? Dimensions (length Γ— width Γ— height) are 513Γ—223Γ—223 mm β€” also written as 513x223x223 mm 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. ### Will the Varta LA170 battery fit my boat? Three options to confirm: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year β€” we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The LA170 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Varta LA170? Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology β€” an EFB cannot be replaced with a conventional battery in Start-Stop boats. See the "Equivalents" section to view recommended options at the same performance level. ## Equivalent batteries - [EXIDE EP1500](https://baterias.com/gb/battery-exide-ep1500-12v-180ah-900a) ## 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· 2026-10-27*