Varta YTX14AH-BS · Motorcycle battery (512908021) 12V 12Ah 210A AGM
Motorcycle battery Varta YTX14AH-BS (512908021) 12V 12Ah 210A AGM images
Specifications
| Brand | VARTA |
|---|---|
| Part number | 512908021 |
| Voltage (V) | 12 |
| Capacity (C20) | 12Ah (c20) |
| Cold cranking amps (EN) | 210A |
| Technology | AGM |
| Length | 134.00 mm |
| Width | 89.00 mm |
| Height | 166.00 mm |
Varta YTX14AH-BS 12V 12Ah 210A is a motorcycle starter battery with standard JIS code (the one on your bike's original label). Ready to use, sealed and vibration-resistant. Fits any model that takes the same JIS reference — the code your mechanic recognises at a glance.
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
Varta YTX14AH-BS Powersports AGM Active (formerly Powersports AGM High Performance) 12Ah 210A 12V Motorcycle Battery
The Varta YTX14AH-BS motorcycle battery (reference 512908021) is the 12 V, 12 Ah model with 210 A of cold cranking power (EN) from Varta's Powersports AGM Active (formerly Powersports AGM High Performance) range, designed for motorcycles, scooters, quads and personal watercraft. Its 134 × 89 × 166 mm dimensions and positive terminal on the left make it the exact replacement for the 12 Ah battery fitted as standard in many motorcycles.
In short: the Varta YTX14AH-BS (12 Ah, 210 A, 134 × 89 × 166 mm, positive terminal on the left). Verified equivalent alternatives: Exide AGM12-14 and Exide ETX14AHL-BS.
- Direct replacement for the original motorbike, scooter or quad battery.
- Construction built to withstand the vibration typical of two-wheelers.
- Performs well in the cold and after periods of inactivity.
- High cranking peak in a compact, lightweight format.
Vehicles that take the Varta YTX14AH-BS battery
According to our database, the Varta YTX14AH-BS is fitted to more than 11 vehicles from makes such as Honda, Bimota and Indian, among others. It is a go-to choice when you need a battery for a Honda, a Bimota or other models that take this same format. Not sure whether it is the right one for your bike? Check in seconds by entering your registration in our finder.
Format and fitting of the Varta YTX14AH-BS
The Varta YTX14AH-BS is made in the 134 × 89 × 166 mm format. The positive terminal on the left determines which side the cables end up on: it is the detail behind most mistaken purchases, so it is worth checking before ordering. It uses a B00 hold-down, the system that anchors it to the vehicle's battery tray. Before replacing it, measure the space your current battery sits in: if it matches on all three dimensions and on the terminal layout, the swap is direct and needs no adapters.
The Varta YTX14AH-BS and the Powersports AGM Active range
The Powersports AGM Active range consists of AGM motorcycle batteries activated and charged at the factory, ready to fit. They pair the toughness of AGM technology with the convenience of immediate installation.
They are aimed at general motorcycle and scooter use, with reliable starting and no maintenance from day one.
Unlike a car battery, what matters here is power density in a minimal size and resistance to vibration. It is the direct substitute for the original motorcycle battery, with the advantage of reliable starting even in the cold and after periods of inactivity. This battery used to belong to Varta's Powersports AGM High Performance range; following the brand's change of commercial naming (2025), it forms part of the new Powersports AGM Active series.
Why choose a Varta battery
Varta is a byword for reliability: original equipment on numerous European vehicles and one of the most proven brands on the market. Replacing your battery with a Varta restores OEM quality — the same performance as the factory-fitted unit — with the manufacturer's backing.
Varta combines more than a century of experience with Clarios's industrial production: it is the battery many manufacturers choose as standard and one of the most recommended by workshops. Like any lead-acid battery, it is 100% recyclable.
Varta is Europe's leading manufacturer of starter batteries: its production volume and its quality controls guarantee consistent reliability batch after batch, something own-brand makes cannot always promise.
Manufacturer's warranty
The Varta YTX14AH-BS battery comes with the official manufacturer warranty.
Care and maintenance
If the bike goes unused for long spells, a trickle charger greatly extends the battery's life and prevents sulphation. Storing it somewhere dry and checking the terminals at the start of each season helps it start first time. Motorcycle batteries suffer in the cold and when left idle: in winter, a maintenance charger stops the battery from discharging completely. With this care, it will typically deliver well over several years of service.
Technical sheet
Download the official technical sheet for this battery with all the manufacturer data.
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ReferenceBCOM-VARTA-512908021
Data sheet
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BrandVARTA
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Reference512908021
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ModelVarta Powersports AGM Active
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Voltage (V)12
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Length134.00 mm
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Width89.00 mm
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Height166.00 mm
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TechnologyAGM
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EAN4016987149713
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Terminal layoutPositive terminal on the left
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JISYTX14AH-BS
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Hold-downB00
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Cold cranking amps (EN)210A
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Capacity (C20)12Ah (c20)
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ETN512908021A514
Specific References
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EAN134016987149713
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MPN512908021
Codes and references Varta 512908021
| Brand | Varta · see all Varta batteries |
|---|---|
| Manufacturer range | Powersports AGM Active (formerly Powersports AGM High Performance) |
| Manufacturer part number (MPN) | 512908021 |
| Also known as | Varta Powersports AGM High Performance 512908021 · Varta Powersports AGM Active 512908021 |
| JIS equivalents | YTX14AH-BS |
| ETN code | 512908021A514 (short form 512 908 021) |
| EAN-13 barcode | 4016987149713 |
| Dimensions (length × width × height) | 134 × 89 × 166 mm (134x89x166) |
Comparison: Varta 512908021 vs equivalents
The Varta 512908021 is interchangeable with these equivalent references: AGM12-14 (Exide), ETX14AHL-BS (Exide), MBTX14AU (Motobatt).
| Product | Specifications | Technology | Price |
|---|---|---|---|
Varta
512908021
This battery
|
12V 12Ah 210A | AGM | €55.80 |
Exide
AGM12-14
|
12V 12Ah 210A | AGM | €53.30 |
Exide
ETX14AHL-BS
|
12V 12Ah 210A | AGM | €42.20 |
Motobatt
MBTX14AU
|
12V 16Ah 210A | Quadflex | €162.50 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
Recommended accessories
Compatible vehicles
The Varta 512908021 fits 11 vehicles. Most searched below:
See all 11 compatible vehicles
Frequently asked questions
Is the Varta YTX14AH-BS an AGM battery and what are the benefits of AGM?
Yes. The YTX14AH-BS from Varta uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for motorcycles with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions.
How is the Varta YTX14AH-BS battery installed in the vehicle?
In most motorcycles 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 — with positive on the left match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On motorcycles with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.
How long does the Varta YTX14AH-BS battery last?
Expected lifespan of the Varta YTX14AH-BS is 5 to 8 years in mild-climate motorcycle use with Start-Stop. 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 134×89×166 mm — also written as 134x89x166 mm — following the European DIN standard. Always measure the space in your motorcycle before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.
On which side is the positive of the YTX14AH-BS model?
Polarity: positive on the left. To identify it, place the battery in front of you with the terminals facing you and check which side the positive (+, marked with a red ring) is on. Before buying, verify the polarity matches your current battery: switching polarity forces longer cables or system reconfiguration, with short-circuit risk.
Is the YTX14AH-BS 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 YTX14AH-BS fits 11 verified vehicle versions in our database.
What are the equivalents of the YTX14AH-BS 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 motorcycles. See the "Equivalents" section to view recommended options at the same performance level.
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