Varta YT12B-BS · Motorcycle battery (512901019) 12V 12Ah 215A AGM
Specifications
| Brand | VARTA |
|---|---|
| Part number | 512901019 |
| Voltage (V) | 12 |
| Capacity (C20) | 12 |
| Capacity (C10) | 12Ah (c10) |
| Technology | AGM |
| Length | 151.00 mm |
| Width | 70.00 mm |
| Height | 131.00 mm |
€67.40
VAT included
4,80/5★★★★★36 reviewsVerified purchases
- ★★★★Iker Garcia:
Buen precio y servicio
- ★★★★★Pedro Alvarez:
Me asesoraron en la instalación de la batería
- ★★★★★David Vega:
Recomiendo esta web, hasta te ayudan a instalar la batería. Gracias!
Varta YT12B-BS 12V 12Ah 215A 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
JIS code
YT12B-4, YT12B-BS
Voltage
12 V
Capacity
12 Ah
Cold cranking
215 A
Dimensions
151×70×131 mm
Technology
AGM
Polarity
Positive on the right
Weight
4 kg
Model
PowerSports AGM
Mfr. reference
512901019
Varta YT12B-BS Powersports AGM 12Ah 215A 12V Motorcycle Battery
Equivalent JIS codesYT12B-4YT12B-BS
12VVoltage
12AhCapacity
215ACold cranking
4,3kgWeight
The Varta YT12B-BS motorcycle battery (reference 512901019) is the 12 V, 12 Ah model with 215 A of cold cranking power (EN) from Varta's Powersports AGM range, designed for motorcycles, scooters, quads and personal watercraft. Its 151 × 70 × 131 mm dimensions and positive terminal on the left make it the exact replacement for the 12 Ah battery fitted as standard in many motorcycles.
- Construction built to withstand the vibration typical of two-wheelers.
- Direct replacement for the original motorbike, scooter or quad battery.
- High cranking peak in a compact, lightweight format.
- Performs well in the cold and after periods of inactivity.
Vehicles that take the Varta YT12B-BS battery
The Varta YT12B-BS fits more than 47 vehicles: it is fitted as standard or used as a replacement by makes such as Ducati, Yamaha, Bimota, Kawasaki, Aprilia Motorcycles and Vespa. For anyone needing to change the battery in their Ducati or Yamaha, this Varta YT12B-BS reproduces the original specifications. The compatibility list also includes models from Piaggio and Triumph Motorcycles. 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 YT12B-BS
The Varta YT12B-BS is made in the 151 × 70 × 131 mm format and weighs 4,3 kg. 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. Checking the three dimensions and the terminal layout before buying avoids the most common mistake when replacing a battery.
The Varta YT12B-BS and the Powersports AGM range
The Powersports AGM range consists of sealed AGM motorcycle batteries, maintenance-free and ready to use, with immobilised electrolyte that makes them resistant to vibration and suitable for any mounting position.
They are the choice for modern motorcycles and scooters with on-board electronics, where the aim is zero maintenance and reliable starting with no leaks and no topping up with acid.
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.
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.
Behind Varta is Clarios, one of the largest manufacturers of starter batteries in the world and a supplier to the assembly lines of numerous car brands. That German engineering heritage translates into reliable starting year after year.
More than 100 manufacturing parameters are checked on every Varta battery before it leaves the plant, a level of rigour that explains why so many workshops and manufacturers trust the brand as their first-choice replacement.
Manufacturer's warranty
The Varta YT12B-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.
BCOM-VARTA-512901019
Data sheet
- Brand
- VARTA
- Reference
- 512901019
- Model
- Varta Powersports AGM
- Voltage (V)
- 12
- Length
- 151.00 mm
- Width
- 70.00 mm
- Height
- 131.00 mm
- Weight
- 4.3 Kgs
- Technology
- AGM
- EAN
- 4016987127483
- Terminal layout
- Positive terminal on the left
- Terminal type
- Y11
- JIS
- YT12B-4 YT12B-BS
- Cold cranking amps (EN)
- 215A
- Capacity (C20)
- 12
- Capacity (C10)
- 12Ah (c10)
- ETN
- 512901019A514
Specific References
- EAN13
- 4016987127483
- MPN
- 512901019
4,80/5
Verified purchasesLatest verified reviews
★★★★★Iker Garcia
04/07/2026La recomendaré
Buen precio y servicio
★★★★★Pedro Alvarez
25/05/2026Me ayudaron a instalar la batería
Me asesoraron en la instalación de la batería
★★★★★David Vega
03/05/2026Me ayudaron a poner la batería
Recomiendo esta web, hasta te ayudan a instalar la batería. Gracias!
★★★★★Jose Carlos Sanchez
25/04/2026Todo perfecto
Recomiendo comprar en esta web porque tienen los mejores precios. Además, el asesoramiento es muy bueno
★★★★★Luis Miguel Carmona
18/02/2026Totalmente recomendable
Compré una VARTA 512901019 en baterias.com y todo perfecto
★★★★★Martin Vega
16/02/2026Trato y ayuda inmejorable, gracias
No tengo mas que palabras de agradecimiento, la batería me llego al día siguiente y me asesoraron gratis para la instalación
★★★★★Alejandro Pascual
12/02/2026Excelente tienda de baterías de coches
Me guiaron con el modelo de batería para mi coche
★★★★★Alfredo Pascual
08/01/2026Muy buen servicio
Me asesoraron en todo, excelente servicio
★★★★★Francisco Javier Herrero
07/01/2026Entregada en tiempo
El envió es super rápido y la atención muy buena.
★★★★★Ruben Reyes
27/12/2025Pude instalarla gracias a su asesoramiento
Tenía dudas de que batería elegir y me indicarón la mejor opción además se ofrecieron a asesorarme con la instalación. Increíble y super recomendada
★★★★★Hugo Diez
20/10/2025Me asesoraron en la instalación
Me asesoraron en la instalación de la bateria
Codes and references Varta 512901019
| Brand | Varta · see all batteries Varta |
|---|---|
| Manufacturer range | Powersports AGM |
| Manufacturer reference (MPN) | 512901019 |
| ETN code | 512901019A514 |
| EAN-13 barcode | 4016987127483 |
| Dimensions (length × width × height) | 151 × 70 × 131 mm (151x70x131) |
Recommended accessories
Compatible vehicles
The Varta 512901019 fits 47 vehicles. Most searched below:
DUCATIMONSTER1990DUCATIMONSTER (900cc - )1990YAMAHAYZF-R1990YAMAHAXJ1990PIAGGIOBEVERLY1990APRILIA MOTORCYCLESSPORTCITY1990KAWASAKININJA (601cc - )1990
See all 47 compatible vehicles 
How to change the battery
Guide to replace your motorcycle battery in 10-15 minutes. Motorcycle batteries are light (2-5 kg) and usually need an 8 mm wrench.
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 compartment
On motorcycles it is usually under the seat, in the rear cowl or behind a side panel. Check the manual — access varies a lot between models.
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
Loosen the hold-down clamp or the straps that secure it. Lift the battery carefully — typical weight 2-5 kg. Check the terminals are not corroded before fitting the new one.
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
Is the Varta YT12B-BS an AGM battery and what are the benefits of AGM?
Yes. The YT12B-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 do I change this battery step by step?
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 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 motorcycles with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.
How long does the Varta YT12B-BS battery last?
Expected lifespan of the Varta YT12B-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 are the measurements of the YT12B-BS model?
Dimensions (length × width × height) are 151×70×131 mm — also written as 151x70x131 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.
Is the YT12B-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 YT12B-BS fits 47 verified vehicle versions in our database.
Which batteries are equivalent to the Varta YT12B-BS?
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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