# Marine battery Varta LFS105N Dual Purpose 12V 85Ah ![Marine battery Varta LFS105N Dual Purpose 12V 85Ah](https://baterias.com/4274-home_default/battery-varta-lfs105n-12v-105ah-750a.jpg) > Varta LFS105N marine battery 12V 105Ah 800A. Official Varta Distributor. Professional Starter range. Dimensions 330×172×240 mm. Demanding marine cranking. **Category:** [Boat Batteries](https://baterias.com/gb/boat-batteries) → [VARTA](https://baterias.com/gb/varta) - **Canonical URL**: https://baterias.com/gb/battery-varta-lfs105n-12v-105ah-750a - **Language**: en-GB - **Brand**: VARTA - **Reference**: BCOM-VARTA-LFS105N - **EAN**: 4016987167151 - **MPN**: LFS105N - **Price**: 215,90 € (VAT incl., Spain) - **Last updated**: 2026-10-28 - **Stock**: In stock ## Technical specifications | Feature | Value | |---|---| | Brand | VARTA | | Reference | LFS105 N | | Model | Professional Dual Purpose | | Voltage (V) | 12 V | | Capacity | 85 Ah (c5) | | Largo | 330 mm | | Ancho | 175 mm | | Alto | 240 mm | | Peso | 26.9 kg | | Tecnología | Lead-acid | | EAN | 4016987167151 | | Terminal layout | 9 | | Terminal type | 1 | | Hold down | B00 | | Cold cranking amps (EN) | 800 | | Capacity (C20) | 105 | | ETN | 820054080B912 | ## Quick description **Varta LFS105N 12V 105Ah 800A** is a starting battery for boats and motorhomes, with a case reinforced against the vibration of mooring and cruising. All its energy is designed to crank the engine reliably, not to run long loads: for that, fit a separate service bank. ## Why this marine starting battery? - **Marine design** built for boat swell and vibration - **Starting in demanding conditions** maximum cranking power - **Sealed and safe** maintenance-free even when the boat rolls 🔌 Voltage 12 V ⚡ Capacity 105 Ah C20 🔋 Cold cranking 800 A EN-1 📏 Dimensions 330×172×240 mm ⚙️ Technology Lead-acid ⚖️ Weight 24,67 kg 🏷️ Model Professional Starter ## Description ## Varta LFS105N Professional Dual Purpose 105Ah 800A 12V Battery 12*V* Voltage 105*Ah* Capacity 800*A* Cold cranking 26,9*kg* Weight The **Varta LFS105N battery** is the **12 V**, **105 Ah** model delivering **800 A** of cold cranking power (EN) from Varta's **Professional Dual Purpose** range, designed for motorhomes, boats and auxiliary power equipment. It replaces the original battery in vehicles with the 330 × 175 × 240 mm format without any modifications: the same 105 Ah capacity. - Ideal for motorhomes, marine use and domestic power on board. - Dual cycle: it both cranks the engine and powers auxiliary equipment. - More endurance on board than a conventional starter battery. - Tolerates deep discharges and repeated recharging without degrading. ### Applications of the Varta LFS105N battery With 105 Ah, the Varta LFS105N 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 weighs 26,9 kg and has a type 1 terminal and a B00 hold-down. ### Size and fitting of the Varta LFS105N The Varta LFS105N is made in the 330 × 175 × 240 mm format and weighs 26,9 kg. It uses a B00 hold-down and a type 1 terminal, the system that anchors it to the vehicle's battery tray. For the swap to be direct, the space your current battery occupies must respect those three dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will have to change. ### The Varta LFS105N and the Professional Dual Purpose range The **Professional Dual Purpose** range consists of dual-purpose batteries: they serve both to crank the engine and to power the on-board services, a balance conceived for leisure and marine use. They are the answer when you want a single battery that starts reliably and at the same time sustains equipment draw with the engine off, without going as far as the extreme cycling of a deep cycle unit. Unlike a pure starter battery, this range tolerates deep discharges and repeated recharging without degrading: exactly what a motorhome or a boat that draws power with the engine off needs. It therefore combines cranking and domestic duty 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'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 LFS105N 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 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. ### Technical sheet Download the official technical sheet for this battery with all the manufacturer data. [Download technical sheet (PDF)](https://baterias.com/fichastecnicas/data-sheet-battery-varta-lfs105n-105ah-750a-12v-en.pdf) ## Frequently asked questions ### 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? It must be mounted upright, firmly secured and in a ventilated compartment, because it gives off gases when charging. Keep the terminals away from salt water. ### What are the measurements of the LFS105N model? Length × width × height: 330x172x240 mm. Height is measured to the top of the terminals. Measure your boat's battery tray first; if the battery exceeds it by even a millimetre, the hold-down clamp may not close. ### Varta LFS105N or Varta H17: which one to choose? Sister reference of the LFS105N, practically identical on paper. Compared with the LFS105N it has the same Ah and cranking power. It costs 115,20 € less. Choose by price and availability: in real use you will not notice a difference. ### Varta LFS105N or Exide EP900: which one to choose? It is the AGM of the same size: sealed, maintenance-free and with far more discharge cycles than the LFS105N. Compared with the LFS105N it has 5 Ah less. It costs 30,05 € more. Recommended for cyclic or stationary use, or when the equipment sits tilted; for occasional use the LFS105N does the job. ## Compatible vehicles The Varta LFS105N fits 1 vehicles, including the Bürstner Aviano i 610 - 725 (1990–2025). | Make | Model | Engine | Years | |---|---|---|---| | Bürstner | Aviano | [i 610 - 725](https://baterias.com/gb/batteries-for-caravans/burstner/aviano/i-610-725) | 1990–2025 | ## Equivalent batteries - [VARTA H17](https://baterias.com/gb/battery-varta-h17-12v-105ah-800a) - [TUDOR TB110B](https://baterias.com/gb/battery-tudor-tb110b-12v-110ah-950a) ## 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 · 2026-11-08*