In short: Put simply: Varta LFS120, rated 120Ah 12V 780A, sold for boats and motorhomes. Size and polarity decide most swaps, and both are listed on this page.
Buying the Varta LFS120 online
Built for life on board boats and motorhomes, the Varta LFS120 keeps lights and pumps going. Rated 120Ah 12V 780A, it gives a solid base for planning a domestic bank. Searching by exact reference keeps a whole bank matched.
120Ah puts it squarely in the middle of the range for boats and motorhomes.
12VNominal voltage
120AhCapacity, 20-hour rate (C20)
780AStarting power (EN)
Five checks for a perfect fit
- ✓ Plus pole position: positive on the left-hand side. Mixing up orientation is the most common reason a battery of the right size will not connect.
- ✓ Amp-hours: 120Ah. More capacity means more reserve for accessories and slower discharge when parked.
- ✓ Diesels and big engines need the full 780A or more.
Measurements, ratings and codes
BrandVarta
ReferenceLFS120
RangeVARTA Professional Starter
Suitsboats and motorhomes
Nominal voltage12V
Capacity, 20-hour rate (C20)120Ah
Starting power (EN)780A
ChemistryLead-acid
Outer measurements349 × 175 × 236 mm
Battery weight29.01 kg
Terminal polaritypositive on the left-hand side
Barcode4016987167175
Common questions about the Varta LFS120
What do 120Ah and 780A mean for this battery?
Expect 780A of cranking power and 120Ah of storage. Matching or beating your old label is the safe rule.
Which voltage does the Varta LFS120 run at?
Voltage is 12V, capacity 120Ah. Check your equipment runs on the same voltage before ordering.
Is the plus post on the correct side for my vehicle?
Polarity here: positive on the left-hand side. Look at the unit in your vehicle too, as reversed polarity often leaves the cables too short.
Does my charger suit the technology of this battery?
Most smart chargers have a mode for lead-acid. Select it before charging; an unsuitable programme can shorten battery life.
About the technology: lead-acid
Some lead-acid batteries have removable caps, others are sealed for life. Flooded deep-cycle batteries suit solar and golf buggies. Use a standard lead-acid profile on the charger.
Alternatives that fit the same space
Other references from our catalogue with the same measurements and terminal position.
Exide ER570Exide ER550Exide EN850
See also
Finished comparing? Placing your order online takes a couple of minutes. Keep the radio code handy before disconnecting the old battery.
Using it day to day: practical tips
A yacht on a mooring all winter needs its batteries checked before launch. Check the charge splitter or relay after fitting new batteries. Old and new batteries side by side make a weak team.
