Fulbat SLA12-20 · Lawnmower battery 12V 21.1Ah 180A AGM
Lawnmower battery Fulbat SLA12-20 12V 21.1Ah 180A AGM images
Specifications
| Brand | FULBAT |
|---|---|
| Part number | SLA12-20 |
| Voltage (V) | 12V |
| Capacity (C20) | 21.10Ah |
| Capacity (C10) | 20Ah (c10) |
| Cold cranking amps (EN) | 180A |
| Technology | AGM |
| Length | 182mm |
| Width | 77mm |
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Fulbat SLA12-20 12V 21Ah 180A is a compact garden battery: strong cranking reserve and good tolerance to long idle periods between seasons.
Why this lawnmower battery?
- Same JIS referenceas your bike's original — fits first time
- Sealed and ready to useno acid handling, no refills
- Survives winter storageholds charge through long off-season
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Lawn mower battery Fulbat SLA12-20 21.1Ah 180A 12V
With 21.1 Ah and 180 A of cold cranking current (EN), the Fulbat SLA12-20 starts ride-on mowers, tillers and garden machinery after months of storage. It measures 182 × 77 × 168 mm and the positive terminal on the right, the format sought by anyone replacing a 21.1 Ah battery in ride-on mowers.
- Good tolerance to self-discharge.
- Compact format for small trays.
- Reliable starting after months of winter storage.
- AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
Dimensions, polarity and mounting
It has external dimensions of 182 × 77 × 168 mm. The positive terminal on the right decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change.
What the Fulbat SLA12-20 is for
The Fulbat SLA12-20 is designed for ride-on mowers, tillers and garden machinery. After winter, a full charge before the first start avoids surprises.
Technology inside the Fulbat SLA12-20
Within the Fulbat catalogue, the SLA12-20 is the 21.1 Ah model designed for this application.
In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery.
Why choose Fulbat batteries
French brand Fulbat is a European reference in motorcycle, garden and leisure batteries: compact ranges, clear JIS codes and a consistent quality that workshops know well. All the Fulbat batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.
Manufacturer's warranty
The Fulbat SLA12-20 comes with the manufacturer's official warranty against manufacturing defects. If it fails through a defect within the warranty period, we replace it at no cost to you.
Care and maintenance
Disconnect or remove the battery over winter and give it a maintenance charge before storing it. Check the voltage before the first start of the season and clean the terminals.
Delivery times and returns
Order before 6:00 pm with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have 14 days to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email.
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ReferenceBCOM-FULBAT-SLA12-20
Data sheet
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BrandFULBAT
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ModelFULBAT Lawn & Garden SLA
-
Voltage (V)12V
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Length182mm
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Width77mm
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Height168mm
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TechnologyAGM
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Terminal layoutPositive right
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Cold cranking amps (EN)180A
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Capacity (C20)21.10Ah
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Capacity (C10)20Ah (c10)
Specific References
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MPNSLA12-20
Comparison: Fulbat SLA12-20 vs equivalents
The Fulbat SLA12-20 is interchangeable with these equivalent references: ES22-12 (MK Powered).
| Product | Specifications | Technology | Price |
|---|---|---|---|
Fulbat
SLA12-20
This battery
|
|||
MK Powered
ES22-12
|
12V 22Ah | AGM | €54.10 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
Recommended accessories
Frequently asked questions
How is the Fulbat SLA12-20 battery installed in the vehicle?
In most trucks 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 — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On trucks with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.
How long does the Fulbat SLA12-20 battery last?
Expected lifespan of the Fulbat SLA12-20 is 4 to 7 years in regular use (depends on technology and climate). 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 size is this battery?
Dimensions (length × width × height) are 182×77×168 mm — also written as 182x77x168 mm — following the European DIN standard. Always measure the space in your truck before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.
Is the SLA12-20 valid for my vehicle?
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 SLA12-20 typically fits a wide range of European vehicles thanks to its standard DIN case format.
What are the equivalents of the SLA12-20 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 trucks. See the "Equivalents" section to view recommended options at the same performance level.
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