# Marine battery Varta LFS120 12V 120Ah

![Marine battery Varta LFS120 12V 120Ah](https://baterias.com/1422-home_default/battery-varta-lfs120-12v-120ah-680a.jpg)

> Varta LFS120 marine battery 12V 120Ah 780A. Official Varta Distributor. Professional Starter range. Dimensions 349×175×236 mm, + terminal on the left.

**Category:** [Boat Batteries](https://baterias.com/gb/boat-batteries) → [VARTA](https://baterias.com/gb/varta)

- **Canonical URL**: https://baterias.com/gb/battery-varta-lfs120-12v-120ah-680a
- **Language**: en-GB
- **Brand**: VARTA
- **Reference**: BCOM-VARTA-LFS120
- **EAN**: 4016987167175
- **MPN**: LFS120
- **Price**: 290,40 €
- **Stock**: In stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | VARTA |
| Reference | LFS120 |
| Model | Professional Starter |
| Voltage (V) | 12 V |
| Largo | 349 cm |
| Ancho | 175 cm |
| Alto | 236 cm |
| Peso | 30.91 kg |
| Tecnología | Lead-acid |
| EAN | 4016987167175 |
| Terminal layout | Positive terminal on the left |
| Terminal type | 0 |
| Hold down | B00 |
| Cold cranking amps (EN) | 780 A |
| Capacity (C20) | 120 Ah (c20) |
| Additional ETN | 620147078B912 |
| Case type | LOT7 |

## Quick description

**Varta LFS120 12V 120Ah 780A** is a marine starting battery: it delivers the cranking power the engine needs and withstands vibration and swell on board. Sealed and maintenance-free. For onboard loads (fridge, sounder, lights) you also need a service battery.

## 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
120 Ah C20

🔋 Cold cranking
780 A EN-1

📏 Dimensions
349×175×236 mm

⚙️ Technology
Lead-acid

🧭 Polarity
Positive on the left

⚖️ Weight
29,01 kg

🏷️ Model
Professional Starter

## Description

## Varta LFS120 Professional Starter 120Ah 780A 12V Battery

12*V* Voltage
120*Ah* Capacity
780*A* Cold cranking
30.91*kg* Weight

The **Varta LFS120 battery** is the **12 V**, **120 Ah** model delivering **780 A** of cold cranking power (EN), from Varta's **Professional Starter** range, designed for starting marine engines and recreational vehicles in demanding conditions. It replaces the original battery in vehicles with the 349 × 175 × 236 mm format without any modifications: the same 120 Ah capacity and the same terminal layout (positive on the left).
- Reliable starting of marine engines and recreational vehicles, in the cold too.
- Direct replacement for the original starter battery in boating and leisure use.
- Optimised for starting in demanding conditions: maximum power at the moment of cranking.
- Rugged construction, resistant to vibration and to the marine environment.

### Applications of the Varta LFS120 battery

With 120 Ah, the Varta LFS120 is sized for starting marine engines and recreational vehicles in demanding conditions, as a direct replacement for the original battery. Check that it matches your current battery in dimensions, terminals and hold-down: this reference weighs 30.91 kg and has a B00 hold-down.

### Format and fitting of the Varta LFS120

In terms of format, the Varta LFS120 measures 349 × 175 × 236 mm (length × width × height) and weighs 30.91 kg. The positive terminal on the left determines which side the cables sit on: it is the detail that causes the most buying mistakes, so it is worth checking before you order. It uses a B00 hold-down, the system that anchors it to the vehicle's battery tray. Checking the three dimensions and the terminal positions before buying avoids the most common mistake when replacing a battery.

### The Varta LFS120 and the Professional Starter range

The **Professional Starter** range consists of pure starter batteries for leisure and boating, built to give marine engines and recreational vehicles powerful, reliable starting.
Unlike cycling or dual-purpose batteries, they are optimised for starting rather than for powering equipment over long periods: the choice when all you need is to fire up the engine with confidence.
Their construction prioritises peak current and resistance to the marine environment (vibration, damp and salt) rather than the ability to run equipment for hours: that is what the deep-cycle and dual-purpose ranges are for.

### Why choose a Varta battery

When a workshop recommends Varta, it is not down to marketing: it is one of the brands with the lowest return rates in the sector, with application coverage spanning practically the entire European fleet, from the city car to the commercial vehicle.
Varta batteries are made under the Clarios group with German technology and quality controls that make them one of the best-selling choices in Europe. As a lead battery, it is 100% recyclable through any collection point.
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 LFS120 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.

### 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-lfs120-120ah-780a-12v-en.pdf)

## Frequently asked questions

### How do I fit the LFS120 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 (−) 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 — with positive on the left match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On boats with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.

### How long does the Varta LFS120 battery last?

Expected lifespan of the Varta LFS120 is 4 to 6 years in regular boat use without 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 dimensions of the Varta LFS120 battery?

Dimensions (length × width × height) are 349×175×236 mm — also written as 349x175x236 mm — 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 LFS120 battery have?

Polarity: positive on the left. 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.

### Will the Varta LFS120 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 — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The LFS120 typically fits a wide range of European vehicles thanks to its standard DIN case format.

### What are the equivalents of the LFS120 model?

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 — 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.


## 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

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*baterias.com — Automotive batteries · 2026-10-27*