Fulbat 12N18-4A · Lawnmower battery 18V 18.9Ah 170A
Specifications
| Brand | FULBAT |
|---|---|
| Part number | 12N18-4A |
| Voltage (V) | 12V |
| Capacity (C20) | 18.90Ah |
| Capacity (C10) | 18Ah (c10) |
| Technology | Lead-acid |
| Length | 205mm |
| Width | 90mm |
| Height | 162mm |
This product is priced on demand to offer you the best available price at all times.
Please contact us to request a quote and we will inform you about availability and the best price on the entire website, as well as the delivery time.
Thank you
Fulbat 12N18-4A 18V 18Ah 170A 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
Voltage
18 V
Capacity
18 Ah
Cold cranking
170 A
Dimensions
205×90×162 mm
Technology
Lead-acid
Polarity
Positive on the left
Model
FULBAT Lawn & Garden DRY
Mfr. reference
12N18-4A
Free quote, no obligation
Request a quote for your Lawnmower battery Fulbat 12N18-4A 18V 18.9Ah 170A
- Reply in under 24 working hours
- Best price guaranteed
Lawn mower battery Fulbat 12N18-4A 18.9Ah 170A 12V
12VVoltage
18.9AhCapacity
170ACold cranking
The Fulbat 12N18-4A battery is rated at 12 V, 18.9 Ah and 170 A of cold cranking current (EN) and is designed for ride-on mowers, tillers and garden machinery. It replaces the original battery without adaptation in ride-on mowers with a 205 × 90 × 162 mm format: same 18.9 Ah capacity and the positive terminal on the left.
- Conventional lead-acid: the most proven and economical technology.
- Reliable starting after months of winter storage.
- Compact format for small trays.
- Good tolerance to self-discharge.
What the Fulbat 12N18-4A is for
With 18.9 Ah, the Fulbat 12N18-4A starts ride-on mowers, tillers and garden machinery and copes with garden-engine vibration.
Dimensions, polarity and mounting
In terms of format, the Fulbat 12N18-4A measures 205 × 90 × 162 mm (length × width × height). The positive terminal on the left decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a 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. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.
Technology inside the Fulbat 12N18-4A
The 12N18-4A is one of the Fulbat references for this type of use; it shares the same manufacturing and quality-control criteria as the rest of the brand's catalogue.
Conventional lead-acid is the benchmark against which other technologies are compared: good cranking current, great tolerance to alternator charging and the best price per amp-hour.
How to make it last longer
Check the voltage before the first start of the season and clean the terminals. On batteries with filler caps, check the electrolyte level and top up only with distilled water.
Official warranty
The Fulbat 12N18-4A 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.
Shipping, delivery and returns
Same-day dispatch from our warehouse for in-stock orders placed before 6:00 pm: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for 14 days if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.
BCOM-FULBAT-12N18-4A
Data sheet
- Brand
- FULBAT
- Model
- FULBAT Lawn & Garden DRY
- Voltage (V)
- 12V
- Length
- 205mm
- Width
- 90mm
- Height
- 162mm
- Technology
- Lead-acid
- Terminal layout
- Positive left
- Cold cranking amps (EN)
- 170A
- Capacity (C20)
- 18.90Ah
- Capacity (C10)
- 18Ah (c10)
Specific References
- MPN
- 12N18-4A
Recommended accessories
How to change the battery
Guide to replace a truck battery in 30-60 minutes. Truck batteries weigh 25-50 kg — we recommend working in pairs and using a carrying strap.
Step 1. Prepare the vehicle
Park on a flat surface, switch off the engine and remove the key. Make sure all lights and electrical accessories are off. Wait 1-2 minutes before starting.
Step 2. Locate the battery
Open the bonnet. The battery is usually in the engine bay, but in many modern cars it may be in the boot or under the passenger seat. Check the manual if you cannot find it.
Step 3. Disconnect the negative (−) terminal
Use the 10 mm wrench to loosen the negative cable nut (black, marked −) and remove the cable from the post. Move it aside so it cannot touch any bodywork.
Step 4. Disconnect the positive (+) terminal
Repeat with the positive cable (red, marked +). Important: never let a terminal touch metal of the car while the other is still connected.
Step 5. Remove the old battery (two people)
Loosen the bottom hold-down clamp. Truck batteries weigh 25-50 kg — lift in pairs with gloves and a carrying strap. Forcing the lift alone risks back injury.
Step 6. Install the new battery
Place the battery in the same orientation as the old one (positive terminal on the same side). Tighten the hold-down clamp firmly.
Step 7. Connect the cables
Connect the positive (+) terminal first, then the negative (−). Tighten the nuts with the wrench until each terminal does not move. Apply anti-spark grease if you have any.
Step 8. Verify the engine starts
Close the bonnet. Start the engine to confirm everything works. On cars with Start-Stop or a BMS, you may need to register the battery via OBD so the alternator applies the correct charging profile.
Frequently asked questions
How is the Fulbat 12N18-4A 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 this page. 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 many years does this battery last?
Expected lifespan of the Fulbat 12N18-4A 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 are the dimensions of the Fulbat 12N18-4A battery?
Dimensions (length × width × height) are 205×90×162 mm — also written as 205x90x162 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 12N18-4A 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 12N18-4A typically fits a wide range of European vehicles thanks to its standard DIN case format.
What are the equivalents of the 12N18-4A 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.
The top-rated online battery store in Spain
-
Audited by Trustpilot, no filters, no edits. The top-rated battery store in Spain.
Trustpilot · verified, no filters
-
Official Varta distributor
Official Varta wholesale distributor. 100% genuine batteries, recently manufactured, best price and no middlemen.
World’s best-selling battery brand
-
+100,000 satisfied customers
More than 100,000 customers already trust baterias.com — and recommend us to their friends and family.
They trust us and recommend us
Choose trust, choose quality, choose baterias.com.