Fulbat NH12-20 GEL · Motorcycle battery 21.1Ah 235A GEL
Motorcycle battery Fulbat NH12-20 GEL 12V 21.1Ah 235A GEL images
Specifications
| Brand | FULBAT |
|---|---|
| Part number | NH12-20 GEL |
| Voltage (V) | 12V |
| Capacity (C20) | 21.10Ah |
| Capacity (C10) | 20Ah (c10) |
| Cold cranking amps (EN) | 235A |
| Technology | GEL |
| Length | 186mm |
| Width | 82mm |
Fulbat NH12-20 GEL 12V 21,1Ah 235A is a sealed motorcycle battery ready to fit, with the JIS reference your mechanic recognises at a glance. Vibration-resistant, keeps voltage during the winter off-season and cranks first time when you take it out for a ride.
Why this motorcycle 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
Where it fits: the Fulbat NH12-20 GEL is one of our motorcycle batteries, belongs to our Fulbat batteries and by capacity it sits among our 21Ah batteries.
Motorcycle battery Fulbat NH12-20 21.1Ah 235A 12V
The Fulbat NH12-20 is a motorcycle battery with 21.1 Ah and 235 A of cold cranking current (EN), designed for motorcycles, scooters, quads and personal watercraft. It measures 186 × 82 × 171 mm and the positive terminal on the right, the format sought by anyone replacing a 21.1 Ah battery in motorcycles.
- Same JIS code as the original battery: fits first time.
- GEL technology: gelled electrolyte, fully sealed and maintenance-free.
- Energetic cranking for high-compression engines.
- Resistant to the vibration typical of two wheels.
What the Fulbat NH12-20 is for
The Fulbat NH12-20 is a common replacement in motorcycles, scooters, quads and personal watercraft. If your bike spends the winter standing, a trickle charger stops it reaching spring flat.
Dimensions, polarity and mounting
It has external dimensions of 186 × 82 × 171 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. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters.
Technology inside the Fulbat NH12-20
Within the Fulbat catalogue, the NH12-20 is the 21.1 Ah model designed for this application.
In a GEL battery the electrolyte is gelled with silica: it is fully sealed, cannot spill and tolerates deep discharge very well. It is the preferred technology in electric mobility, marine service and heavy-cycling applications.
Fulbat: the maker behind the NH12-20
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.
Official warranty
The Fulbat NH12-20 comes with the manufacturer's official warranty. The warranty does not cover discharge through prolonged inactivity: if the bike stands for months, use a trickle charger.
How to make it last longer
Avoid repeated cranking attempts on a cold bike for long: if it does not start on the third try, let the battery rest for a minute. GEL batteries need lower charging voltages: always use a charger with a GEL mode so as not to damage the electrolyte.
Shipping, delivery and returns
Orders placed before 6:00 pm with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have 14 days to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships.
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ReferenceBCOM-FULBAT-NH12-20 GEL
Data sheet
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BrandFULBAT
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ModelFULBAT Motorcycle GEL
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Voltage (V)12V
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Length186mm
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Width82mm
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Height171mm
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TechnologyGEL
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Terminal layoutPositive right
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Cold cranking amps (EN)235A
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Capacity (C20)21.10Ah
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Capacity (C10)20Ah (c10)
Specific References
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MPNNH12-20 GEL
Fulbat NH12-20 GEL: best-selling equivalent or higher-spec batteries
The Fulbat NH12-20 GEL is interchangeable with these equivalent references: 519901017 (Varta).
| Product | Specifications | Technology | Price | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Fulbat
NH12-20 GEL
This battery
|
12V 21.1Ah 235A | Gel | €98.57 | |||||||||||||||||||||
Varta
GEL-19AH
Varta equivalent |
12V 19Ah 170A | Gel | €97.20 −€1.37 | |||||||||||||||||||||
| ||||||||||||||||||||||||
| NH12-20 GEL | GEL-19AH | |
|---|---|---|
| Capacity | 21 Ah | 19 Ah |
| Cold cranking (EN) | 235 A | 170 A |
| Technology | Gel | Gel |
| Dimensions (mm) | 186 × 82 × 171 | 186 × 82 × 173 |
| Positive terminal | Positive right | Positive terminal on the right |
| Price | €98.57 | €97.20 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
Other 21Ah batteries: We stock 6 models of 21 Ah to compare by price, technology and cold cranking: see all 21Ah batteries. Same size (186 × 82 × 171 mm): batteries of 186 × 82 × 171 mm.
Recommended accessories
Frequently asked questions
Is the Fulbat NH12-20 GEL a GEL battery? What is GEL used for?
Yes, GEL technology (21.1 Ah): a sealed lead-acid battery whose electrolyte is in gel form. Take care when charging: it requires a smart charger with a GEL mode, because it accepts a lower charge voltage than an AGM. Designed for cyclic use (solar installations, motorhomes, electric wheelchairs, motorcycles), it tolerates deep discharges very well.
How should this motorcycle battery be charged?
With a 12 V motorcycle charger delivering at most 10 % of its capacity: 2.1 A for its 21.1 Ah. High-current car chargers can damage it. If the bike is laid up for the winter, keep it on a maintenance charger.
Does it need maintenance?
No: being GEL, it is sealed and nothing needs topping up. Just keep it charged if the bike stands for a long time.
What is the service life of the NH12-20 GEL model?
As a guide, you can expect the Fulbat NH12-20 GEL to last 4 to 6 years, keeping it charged when the bike is not in use, although the real figure may be higher or lower. What weighs most: temperature (cold makes starts harder and intense heat evaporates the electrolyte), frequent short trips, the condition of the alternator and charging system, power draw while parked and maintenance.
What are the dimensions of the Fulbat NH12-20 GEL battery?
Measure the battery tray before ordering: a one-millimetre difference is enough for the hold-down clamp not to close. It measures 186×82×171 mm in length × width × height, with the terminals included in the height.
What polarity does the Fulbat NH12-20 GEL battery have?
On the Fulbat NH12-20 GEL, the polarity is positive on the right. To check, stand the battery in front of you with the terminals nearest you: the positive (+) is the one with the red ring. A change of polarity from the original means longer cables or a reconfigured system and can cause a short circuit: check it before ordering.
Will the Fulbat NH12-20 GEL battery fit my motorcycle?
The NH12-20 GEL typically fits a wide range of European vehicles thanks to its standard DIN case format. Three routes: the "Compatible vehicles" tab on this page, with the vehicles verified by our technical team; your number plate in the finder, from which DGT/DVLA/KBA detect model and engine; and WhatsApp, with make, model, engine and year, during business hours (Mon–Fri 10:00–13:30 and 16:30–18:00 (Spanish time, CET)). In every case, the motorcycle manufacturer's specifications (owner's handbook) take precedence.
Which batteries are equivalent to the Fulbat NH12-20 GEL?
The options at the same level are in the "Equivalents" section of this page. A battery interchangeable with the Fulbat NH12-20 GEL must match it on dimensions (186×82×171 mm), polarity (positive on the right), capacity (21.1 Ah) and cranking current (235 A).
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