# Motorcycle battery Varta YT9B 12V 8Ah 115A AGM ![Motorcycle battery Varta YT9B 12V 8Ah 115A AGM](https://baterias.com/5836-home_default/battery-varta-motorcycle-12v-8ah-yt9b-fa-508909012.jpg) > Varta YT9B motorcycle battery 12V 8Ah 115A AGM. Official Varta Distributor. Replaces T9B. Ref. 508909012. PowerSports AGM Active range. Verified OEM fitment. **Category:** [Motorcycle Batteries](https://baterias.com/gb/motorcycle-batteries) β†’ [VARTA](https://baterias.com/gb/varta) - **Canonical URL**: https://baterias.com/gb/battery-varta-motorcycle-12v-8ah-yt9b-fa-508909012 - **Language**: en-GB - **Brand**: VARTA - **Reference**: BCOM-VARTA-508909012 - **EAN**: 4016987169094 - **MPN**: 508909012 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | VARTA | | Reference | 508909012 | | Model | Powersports AGM Active (antes Powersports AGM High Performance) | | Voltage (V) | 12 V | | Largo | 150 mm | | Ancho | 70 mm | | Alto | 105 mm | | TecnologΓ­a | AGM | | EAN | 4016987169094 | | Terminal layout | Positive terminal on the left | | JIS | YT9 B | | Hold down | B00 | | Cold cranking amps (EN) | 115 A | | Capacity (C20) | 8 Ah (c20) | | Additional ETN | 508909012K542 | ## Quick description **Varta YT9B 12V 8Ah 115A** 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 reference** as your bike's original β€” fits first time - **Sealed and ready to use** no acid handling, no refills - **Survives winter storage** holds charge through long off-season 🏍️ JIS code T9B, YT9B πŸ”Œ Voltage 12 V ⚑ Capacity 8 Ah C10 πŸ”‹ Cold cranking 115 A EN-1 πŸ“ Dimensions 150Γ—70Γ—105 mm βš™οΈ Technology AGM 🧭 Polarity Positive on the left βš–οΈ Weight 2,78 kg 🏷️ Model PowerSports AGM Active #️⃣ Mfr. reference 508909012 ## Description ## Varta YT9B Powersports AGM Active (formerly Powersports AGM High Performance) 8Ah 115A 12V Motorcycle Battery JIS code YT9B 12*V* Voltage 8*Ah* Capacity 115*A* Cold cranking The **Varta YT9B motorcycle battery** (reference 508909012) is the **12 V**, **8 Ah** model delivering **115 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. Measuring 150 Γ— 70 Γ— 105 mm and with the positive terminal on the left, it is the direct replacement for motorcycles fitted from the factory with an 8 Ah battery in this format. - 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. ### Applications of the Varta YT9B battery With 8 Ah, the Varta YT9B is sized for motorcycles, scooters, quads and personal watercraft, as a direct replacement for the original battery. 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 YT9B The Varta YT9B is made in the 150 Γ— 70 Γ— 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 YT9B 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 combine 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 now forms part of the new **Powersports AGM Active** series.* ### Why choose a Varta battery Varta is an original equipment (OEM) supplier to a good share of Europe's car manufacturers: many cars leave the factory with a Varta fitted. Buying a replacement means, in most cases, refitting the original battery with the same quality and the brand's official warranty. 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 YT9B 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)](/fichastecnicas/ficha-tecnica-bateria-varta-t9b-8ah-115a-12v-en.pdf) ## Frequently asked questions ### How do I fit the YT9B 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 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 (βˆ’) 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 β€” match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (βˆ’). 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 YT9B model? Expected lifespan of the Varta YT9B 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 YT9B battery? Dimensions (length Γ— width Γ— height) are 150Γ—70Γ—105 mm β€” also written as 150x70x105 mm β€” 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. ### Will the Varta YT9B battery fit my motorcycle? 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 β€” we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The YT9B typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Varta YT9B? 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 β€” 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. ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team β€” automotive battery specialists since 2012. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-10-20*