Varta YB12AL · Motorcycle battery 12V 12Ah 125A AGM
Specifications
| Brand | VARTA |
|---|---|
| Part number | 512909013 |
| Voltage (V) | 12 |
| Capacity (C20) | 12Ah (c20) |
| Technology | AGM |
| Length | 134 mm |
| Width | 81 mm |
| Height | 160 mm |
| Terminal layout | Positive terminal on the right |
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Varta YB12AL 12V 12Ah 125A 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
B12AL, YB12AL
Voltage
12 V
Capacity
12 Ah
Cold cranking
125 A
Dimensions
134×81×160 mm
Technology
AGM
Polarity
Positive on the right
Weight
3,88 kg
Model
PowerSports AGM Active
Mfr. reference
512909013
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Varta YB12AL Powersports AGM Active (formerly Powersports AGM High Performance) 12Ah 125A 12V Motorcycle Battery
JIS codeYB12AL
12VVoltage
12AhCapacity
125ACold cranking
The Varta YB12AL motorcycle battery (reference 512909013) is the 12 V, 12 Ah model delivering 125 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 × 81 × 160 mm dimensions and positive terminal on the right make it the exact replacement for the 12 Ah battery fitted as standard in many motorcycles.
- Performs well in the cold and after periods of inactivity.
- High cranking peak in a compact, lightweight format.
- Direct replacement for the original motorbike, scooter or quad battery.
- Construction built to withstand the vibration typical of two-wheelers.
Applications of the Varta YB12AL battery
Designed for motorcycles, scooters, quads and personal watercraft, the Varta YB12AL is a direct replacement when you need its same 12 Ah capacity and format. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a B00 hold-down.
Format and fitting of the Varta YB12AL
In terms of format, the Varta YB12AL measures 134 × 81 × 160 mm (length × width × height). The positive terminal on the right determines which side the cables run to: it is the detail that causes the most buying mistakes, so it is worth checking before ordering. It uses a B00 hold-down, the system that secures it to the vehicle's battery tray. Before replacing it, measure the space your current battery occupies: if it matches on all three dimensions and on terminal position, the swap is direct and needs no adapters.
The Varta YB12AL and the Powersports AGM Active range
The Powersports AGM Active series is Varta's AGM motorcycle line that arrives activated and charged from the factory: it fits straight on, with no acid to add and no charging before use. It combines the ruggedness of AGM (resistance to vibration and to deep discharge) with the greatest possible ease of installation.
In the new portfolio it also absorbs the former high-performance versions (AGM High Performance), so it covers everything from general use to large-capacity, custom and trail bikes with heavy cranking demands.
On two wheels, vibration and extreme temperatures take a heavy toll on the battery. This range reinforces the internal plate mounting and seals the unit to withstand that use, delivering the instant burst of cranking power a motorbike or quad engine needs after weeks standing idle. This battery used to belong to Varta's Powersports AGM High Performance range; following the brand's change of commercial naming (2025), it now forms part of the new Powersports AGM Active series.
Why choose a Varta battery
A good share of the vehicles on Europe's roads left the factory with a Varta fitted: the brand has been supplying the assembly lines of the leading car groups for decades. Replacing with a Varta is, in practice, giving the vehicle back the battery its manufacturer intended.
Varta batteries are made under the Clarios group with German technology and quality controls that make them one of the best-selling choices in Europe. As a lead battery, it is 100% recyclable through any collection point.
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 YB12AL 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-512909013
Data sheet
- Brand
- VARTA
- Reference
- 512909013
- Model
- Varta Powersports AGM Active
- Voltage (V)
- 12
- Length
- 134 mm
- Width
- 81 mm
- Height
- 160 mm
- Technology
- AGM
- EAN
- 4016987169278
- Terminal layout
- Positive terminal on the right
- JIS
- YB12AL
- Hold-down
- B00
- Cold cranking amps (EN)
- 125A
- Capacity (C20)
- 12Ah (c20)
- Additional ETN
- 512909013K542
Specific References
- EAN13
- 4016987169278
- MPN
- 512909013
Codes and references Varta 512909013
| Brand | Varta · see all batteries Varta |
|---|---|
| Manufacturer reference (MPN) | 512909013 |
| EAN-13 barcode | 4016987169278 |
| Dimensions (length × width × height) | 134 × 81 × 160 mm (134x81x160) |
Recommended accessories
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
How do I fit the YB12AL model in my motorcycle?
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.
What is the service life of the YB12AL model?
Expected lifespan of the Varta YB12AL 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 Varta YB12AL battery?
Dimensions (length × width × height) are 134×81×160 mm — also written as 134x81x160 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 YB12AL 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 YB12AL typically fits a wide range of European vehicles thanks to its standard DIN case format.
What are the equivalents of the YB12AL 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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