# Motorcycle battery Varta YT12A 12V 10Ah 145A AGM ![Motorcycle battery Varta YT12A 12V 10Ah 145A AGM](https://baterias.com/5852-home_default/battery-varta-motorcycle-12v-10ah-yt12a-fa-510909015.jpg) > Varta YT12A motorcycle battery 12V 10Ah 145A AGM. Official Varta Distributor. Replaces T12A. Ref. 510909015. PowerSports AGM Active range. Verified OEM fitment. **Category:** [Motorcycle Batteries](https://baterias.com/gb/motorcycle-batteries) → [VARTA](https://baterias.com/gb/varta) - **Canonical URL**: https://baterias.com/gb/battery-varta-motorcycle-12v-10ah-yt12a-fa-510909015 - **Language**: en-GB - **Brand**: VARTA - **Reference**: BCOM-VARTA-510909015 - **EAN**: 4016987169179 - **MPN**: 510909015 - **Last updated**: 2026-10-28 - **Stock**: In stock ## Technical specifications | Feature | Value | |---|---| | Brand | VARTA | | Reference | 510909015 | | Model | Powersports AGM Active (antes Powersports AGM High Performance) | | Voltage (V) | 12 V | | Largo | 150 mm | | Ancho | 88 mm | | Alto | 105 mm | | Tecnología | AGM | | EAN | 4016987169179 | | Terminal layout | Positive terminal on the left | | JIS | YT12 A | | Hold down | B00 | | Cold cranking amps (EN) | 145 A | | Capacity (C20) | 10 Ah (c20) | | Additional ETN | 510909015K542 | ## Quick description **Varta YT12A 12V 10Ah 145A** 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 reference** as your bike's original — fits first time - **Sealed and ready to use** no acid handling, no refills - **Survives winter storage** holds charge through long off-season 🏍️ JIS code T12A, YT12A 🔌 Voltage 12 V ⚡ Capacity 10 Ah C10 🔋 Cold cranking 145 A EN-1 📏 Dimensions 150×88×105 mm ⚙️ Technology AGM 🧭 Polarity Positive on the left ⚖️ Weight 3,29 kg 🏷️ Model PowerSports AGM Active #️⃣ Mfr. reference 510909015 ## Description ## Varta YT12A Powersports AGM Active (formerly Powersports AGM High Performance) 10Ah 145A 12V Motorcycle Battery JIS code YT12A 12*V* Voltage 10*Ah* Capacity 145*A* Cold cranking The **Varta YT12A motorcycle battery** (reference 510909015) is the **12 V**, **10 Ah** model delivering **145 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. It replaces the original battery in motorcycles with the 150 × 88 × 105 mm format without any modifications: the same 10 Ah capacity and the same terminal layout (positive on the left). - 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 YT12A battery The Varta YT12A covers the needs of motorcycles, scooters, quads and personal watercraft with 10 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 has a B00 hold-down. ### Format and fitting of the Varta YT12A The Varta YT12A is made in the 150 × 88 × 105 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. Checking the three dimensions and the terminal layout before buying avoids the most common mistake when replacing a battery. ### The Varta YT12A 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 Manufactured by Clarios to German standards, Varta is one of the world's benchmark brands in starter batteries and an OEM supplier to the leading car makers. Choosing it as a replacement guarantees specifications equal to or better than the originals. 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. 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 YT12A 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. [Download technical sheet (PDF)](https://baterias.com/fichastecnicas/ficha-tecnica-bateria-varta-t12a-10ah-145a-12v-en.pdf) ## Frequently asked questions ### Is the YT12A model AGM? What does this technology offer? Yes. AGM (Absorbent Glass Mat) technology, 10 Ah and 12 V: sealed lead-acid, with the electrolyte held in glass fibre. It tolerates heat better and handles more cycles than a conventional battery. ### How should this motorcycle battery be charged? With a 12 V motorcycle charger delivering at most 10 % of its capacity: 1 A for its 10 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 AGM, it is sealed and nothing needs topping up. Just keep it charged if the bike stands for a long time. ### How long does the Varta YT12A battery last? As a rough estimate, the Varta YT12A typically lasts 4 to 6 years, keeping it charged when the bike is not in use; it is a guide figure, not a guaranteed period. Many factors play a part: how it is used (lots of short trips, for example), temperature (cold makes every start harder and intense heat evaporates the electrolyte), the condition of the alternator and charging system, power drawn with the engine off and maintenance. ### What size is this battery? Length × width × height: 150x88x105 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. ### What polarity does the Varta YT12A battery have? Polarity of the Varta YT12A: positive on the left. If your current battery has its positive on the other side, this one is not suitable without longer cables or a reconfigured system (short-circuit risk). Seen from the front, terminals towards you, the positive (+) is the post with the red ring. ### Does this battery fit my motorcycle? For your own vehicle: type your number plate into the finder (DGT/DVLA/KBA identify model and engine), check the "Compatible vehicles" tab below, listing vehicles verified by our technical team, or message us on WhatsApp with make, model, engine and year; we reply 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. ### Which batteries are equivalent to the Varta YT12A? A battery interchangeable with the Varta YT12A must match it on dimensions (150×88×105 mm), polarity (positive on the left), capacity (10 Ah) and cranking current (145 A). The "Equivalents" section of this page gathers the recommended options with equivalent performance. ### Varta YT12A or Varta YT12A-BS: which one to choose? Same case and same technology as the YT12A: an alternative by size, not an official equivalent. Compared with the YT12A it has 1 Ah more and 15 A of cold cranking more. It costs €43.20 more. If the polarity matches and your bike had a similar capacity, it works as a replacement; if in doubt, ask us with your model. ### Varta YT12A or Exide ET12A-BS: which one to choose? Same case and same technology as the YT12A: an alternative by size, not an official equivalent. Compared with the YT12A it has 15 A of cold cranking less. It costs €34.70 more. If the polarity matches and your bike had a similar capacity, it works as a replacement; if in doubt, ask us with your model. ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2012. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-11-15*