Varta LFS120 Professional Starter · Marine battery 120Ah
Specifications
| Brand | VARTA |
|---|---|
| Part number | LFS120 |
| Voltage (V) | 12 |
| Capacity (C20) | 120Ah (c20) |
| Cold cranking amps (EN) | 780A |
| Technology | Lead-acid |
| Length | 349 mm |
| Width | 175 mm |
| Height | 236 mm |
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 designbuilt for boat swell and vibration
- Starting in demanding conditionsmaximum cranking power
- Sealed and safemaintenance-free even when the boat rolls
Where it fits: the Varta LFS120 is one of our boat batteries, belongs to our Varta batteries and by capacity it sits among our 120Ah batteries.

Varta LFS120 Professional Starter 120Ah 780A 12V Battery
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.
Data sheet
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BrandVARTA
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ReferenceLFS120
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ModelVarta Professional Starter
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Voltage (V)12
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Length349 mm
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Width175 mm
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Height236 mm
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Weight30.91 Kgs
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TechnologyLead-acid
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EAN4016987167175
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Terminal layoutPositive terminal on the left
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Terminal type0
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Hold-downB00
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Cold cranking amps (EN)780A
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Capacity (C20)120Ah (c20)
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Additional ETN620147078B912
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Case typeLOT7
Specific References
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EAN134016987167175
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MPNLFS120
Codes and references Varta LFS120
| Brand | Varta · see all Varta batteries |
|---|---|
| Manufacturer range | Professional Starter |
| Manufacturer part number (MPN) | LFS120 |
| Also known as | Varta Professional Starter LFS120 |
| EAN-13 barcode | 4016987167175 |
| Dimensions (length × width × height) | 349 × 175 × 236 mm (349x175x236) |
Varta LFS120: alternatives with the same dimensions
Batteries from our catalogue with the same dimensions, voltage and technology as the Varta LFS120 and a similar capacity, sorted by sales. They are not manufacturer-approved equivalents: check the polarity and capacity of your original battery.
| Product | Specifications | Technology | Price | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Varta
LFS120
This battery
|
12V 120Ah 780A | Lead-acid | 290,40 € | |||||||||||||||||||||
Exide
ER550
Same size |
12V 115Ah 760A | Lead-acid | 123,30 € −167,10 € | |||||||||||||||||||||
| ||||||||||||||||||||||||
| LFS120 | ER550 | |
|---|---|---|
| Capacity | 120 Ah | 115 Ah |
| Cold cranking (EN) | 780 A | 760 A |
| Technology | Lead-acid | Lead-acid |
| Dimensions (mm) | 349 × 175 × 236 | 349 × 175 × 235 |
| Positive terminal | Positive terminal on the left | Positive terminal on the left |
| Price | 290,40 € | 123,30 € |
Exide
EN850
Same size Varta LFS120 vs Exide EN850
Same size · −175,80 €
Same case and same technology as the LFS120: an alternative by size, not an official equivalent. Compared with the LFS120 it has 10 Ah less and 30 A of cold cranking less. It costs 175,80 € less. If the polarity matches and your equipment had a similar capacity, it works as a replacement; if in doubt, ask us with your model.
| LFS120 | EN850 | |
|---|---|---|
| Capacity | 120 Ah | 110 Ah |
| Cold cranking (EN) | 780 A | 750 A |
| Technology | Lead-acid | Lead-acid |
| Dimensions (mm) | 349 × 175 × 236 | 349 × 175 × 235 |
| Positive terminal | Positive terminal on the left | Positive terminal on the left |
| Price | 290,40 € | 114,60 € |
Exide
ER570
Same size Varta LFS120 vs Exide ER570
Same size · −167,10 €
It has the same dimensions, voltage and technology as the LFS120, although it is not a manufacturer-approved equivalent. Compared with the LFS120 it has 20 A of cold cranking less. It costs 167,10 € less. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.
| LFS120 | ER570 | |
|---|---|---|
| Capacity | 120 Ah | 120 Ah |
| Cold cranking (EN) | 780 A | 760 A |
| Technology | Lead-acid | Lead-acid |
| Dimensions (mm) | 349 × 175 × 236 | 349 × 175 × 235 |
| Positive terminal | Positive terminal on the left | 1 |
| Price | 290,40 € | 123,30 € |
Automatic selection by dimensions (±3 mm), voltage, technology and capacity (−10 % / +20 %). Official manufacturer warranty on every option.
Other 120Ah batteries: We stock 24 models of 120 Ah to compare by price, technology and cold cranking: see all 120Ah batteries. Same size (349 × 175 × 236 mm): batteries of 349 × 175 × 236 mm.
Recommended accessories
Frequently asked questions
Is this a starting or a service (leisure) battery?
Starting: it delivers a high current for a few seconds to crank the engine. 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 dimensions of the Varta LFS120 battery?
Its dimensions are 349×175×236 mm, also written 349x175x236 mm; the height already includes the terminals. Check the room available in your boat, because a single millimetre too much can stop the clamp from closing.
What polarity does the Varta LFS120 battery have?
On the Varta LFS120, the polarity is positive on the left. To check, stand the battery in front of you with the terminals nearest you: the positive (+) is the one with the red ring. Compare it with the battery you are replacing: if it does not match, cables must be lengthened or the system reconfigured, with a risk of short circuit.
Varta LFS120 or Exide ER550: which one to choose?
It has the same dimensions, voltage and technology as the LFS120, although it is not a manufacturer-approved equivalent. Compared with the LFS120 it has 5 Ah less and 20 A of cold cranking less. It costs 167,10 € less. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.
Varta LFS120 or Exide EN850: which one to choose?
Same case and same technology as the LFS120: an alternative by size, not an official equivalent. Compared with the LFS120 it has 10 Ah less and 30 A of cold cranking less. It costs 175,80 € less. If the polarity matches and your equipment had a similar capacity, it works as a replacement; if in doubt, ask us with your model.
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