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Specifications
| Brand | VARTA |
|---|---|
| Part number | 512903013 |
| Voltage (V) | 12 |
| Capacity (C20) | 13 |
| Capacity (C10) | 12Ah (c10) |
| Cold cranking amps (EN) | 190A |
| Technology | AGM |
| Length | 152.00 mm |
| Width | 70.00 mm |
Varta YT14B-BS 12V 13Ah 190A 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.
Where it fits: the Varta 512903013 is one of our motorcycle batteries, belongs to our Varta batteries and by capacity it sits among our 13Ah batteries.
The Varta 512903013 offers 13 Ah and 190 A cold cranking in a 152 × 70 × 150 mm case. The Varta 512901019, same brand and technology, stays at 12 Ah and 215 A with 1 mm less length and costs €18.80 more. If your car originally had the smaller capacity, this one gives extra reserve in the same case.

The Varta YT14B-BS motorcycle battery (reference 512903013) is the 12 V, 13 Ah model with 190 A of cold cranking power (EN) from Varta's Powersports AGM range, designed for motorcycles, scooters, quads and personal watercraft. With dimensions of 152 × 70 × 150 mm and the positive terminal on the left, it is the direct replacement for motorcycles fitted from the factory with a 13 Ah battery in this format.
The Varta YT14B-BS covers the needs of motorcycles, scooters, quads and personal watercraft with 13 Ah of capacity and a construction built for that use. Check that it matches your current battery in dimensions, terminals and hold-down: this reference weighs 4,7 kg and has a Y11 terminal.
The Varta YT14B-BS is made in the 152 × 70 × 150 mm format and weighs 4,7 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. 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.
Varta's Powersports AGM series uses AGM technology (electrolyte absorbed in glass fibre): sealed, maintenance-free motorcycle batteries with very high vibration resistance that can be fitted in almost any position with no risk of spillage.
They are designed for today's motorcycles and scooters with plenty of electrical equipment, which demand reliable starting and zero maintenance throughout the battery's life.
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.
Choosing Varta means sticking with the reference the vehicle manufacturer itself approved in the first place. Against own-brand batteries, the difference is not the purchase price but how many winters the battery lasts before leaving you stranded.
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.
Varta's production combines automated lines with verification of more than 100 parameters per unit; that traceability is what underpins its reputation for reliable starting throughout the battery's life.
The Varta YT14B-BS battery comes with the official manufacturer warranty.
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.
Download the official technical sheet for this battery with all the manufacturer data.
Data sheet
Specific References
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Reviews originally written in Spanish
Envio Rapido, bateria conforme, bueno precio, gracias
Buena batería a falta de probarla. El servicio de venta funciona fenomenal. Comprada viernes en casa el sábado, menos de 24horas. La tienda online 100% recomendable. Cumplen lo que prometen . Muy bien recomiendo comprar en esta tienda.
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Todo perfecto!
Envio Rapido, bateria conforme, bueno precio, gracias
Bateria OK
Buena batería a falta de probarla. El servicio de venta funciona fenomenal. Comprada viernes en casa el sábado, menos de 24horas. La tienda online 100% recomendable. Cumplen lo que prometen . Muy bien recomiendo comprar en esta tienda.
Each review is shown in the language the customer wrote it in.
| Brand | Varta · see all Varta batteries |
|---|---|
| Manufacturer range | Powersports AGM |
| Manufacturer part number (MPN) | 512903013 |
| Also known as | Varta Powersports AGM 512903013 |
| JIS equivalents | YT14B-4 · YT14B-BS |
| ETN code | 512903013A514 (short form 512 903 013) |
| EAN-13 barcode | 4016987127490 |
| Dimensions (length × width × height) | 152 × 70 × 150 mm (152x70x150) |
Other 13Ah batteries: We stock 10 models of 13 Ah to compare by price, technology and cold cranking: see all 13Ah batteries.
Yes, it is AGM. In an AGM battery such as the YT14B-BS, the electrolyte is not free but absorbed in a glass-fibre mat inside a sealed lead-acid battery. Its advantages: more charge/discharge cycles than a conventional battery and better heat tolerance.
With a 12 V motorcycle charger delivering at most 10 % of its capacity: 1.3 A for its 13 Ah. High-current car chargers can damage it. If the bike is laid up for the winter, keep it on a maintenance charger.
No: being AGM, it is sealed and nothing needs topping up. Just keep it charged if the bike stands for a long time.
There is no exact figure: for a battery such as the Varta YT14B-BS (AGM), a reasonable guide is 4 to 6 years, keeping it charged when the bike is not in use. Actual lifespan varies with climate (cold starts, heat evaporating the electrolyte), with usage and short journeys, with the condition of the alternator and charging system, with power draw while parked and with maintenance.
Length × width × height: 152x70x150 mm. Height is measured to the top of the terminals. Measure your motorcycle's battery tray first; if the battery exceeds it by even a millimetre, the hold-down clamp may not close.
It has the positive on the left (polarity). Put it in front of you, terminals towards you: the post with the red ring and the + sign is the positive. Compare it with the battery you are replacing: if it does not match, cables must be lengthened or the system reconfigured, with a risk of short circuit.
The quickest way is to enter your number plate in the finder: DGT/DVLA/KBA detect model and engine. You can also look at the "Compatible vehicles" tab, verified by our technical team, or send us make, model, engine and year on WhatsApp; we answer during business hours (Mon–Fri 10:00–13:30 and 16:30–18:00 (Spanish time, CET)). If our table and the motorcycle handbook disagree, go with what the manufacturer says.
The "Equivalents" section further down lists the recommended alternatives. A direct equivalent needs what this YT14B-BS offers: 152×70×150 mm, positive on the left, the same Ah and CCA and AGM technology.
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