# Motorcycle battery Varta YTB9 12V 9Ah 100A AGM ![Motorcycle battery Varta YTB9 12V 9Ah 100A AGM](https://baterias.com/5843-home_default/battery-varta-motorcycle-12v-9ah-ytb9-fa-509909010.jpg) > Varta YTB9 motorcycle battery 12V 9Ah 100A AGM. Official Varta Distributor. Replaces TB9. Ref. 509909010. 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-9ah-ytb9-fa-509909010 - **Language**: en-GB - **Brand**: VARTA - **Reference**: BCOM-VARTA-509909010 - **EAN**: 4016987169131 - **MPN**: 509909010 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | VARTA | | Reference | 509909010 | | Model | Powersports AGM Active (antes Powersports AGM High Performance) | | Voltage (V) | 12 V | | Largo | 135 mm | | Ancho | 75 mm | | Alto | 139 mm | | TecnologΓ­a | AGM | | EAN | 4016987169131 | | Terminal layout | Positive terminal on the left | | JIS | YTB9 | | Hold down | B00 | | Cold cranking amps (EN) | 100 A | | Capacity (C20) | 9 Ah (c20) | | Additional ETN | 509909010K542 | ## Quick description **Varta YTB9 12V 9Ah 100A** 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 β€” the code your mechanic recognises at a glance. ### 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 TB9, YTB9 πŸ”Œ Voltage 12 V ⚑ Capacity 9 Ah C10 πŸ”‹ Cold cranking 100 A EN-1 πŸ“ Dimensions 135Γ—75Γ—139 mm βš™οΈ Technology AGM 🧭 Polarity Positive on the left βš–οΈ Weight 3,08 kg 🏷️ Model PowerSports AGM Active #️⃣ Mfr. reference 509909010 ## Description ## Varta YTB9 Powersports AGM Active (formerly Powersports AGM High Performance) 9Ah 100A 12V Motorcycle Battery JIS code YTB9 12*V* Voltage 9*Ah* Capacity 100*A* Cold cranking The **Varta YTB9 motorcycle battery** (reference 509909010) is the **12 V**, **9 Ah** model delivering **100 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 135 Γ— 75 Γ— 139 mm format without any modifications: the same 9 Ah capacity and the same terminal layout (positive on the left). - High cranking peak in a compact, lightweight format. - Performs well in the cold and after periods of inactivity. - Construction built to withstand the vibration typical of two-wheelers. - Direct replacement for the original motorbike, scooter or quad battery. ### Applications of the Varta YTB9 battery With 9 Ah, the Varta YTB9 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 YTB9 In terms of format, the Varta YTB9 measures 135 Γ— 75 Γ— 139 mm (length Γ— width Γ— height). The positive terminal on the left 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. Checking the three dimensions and the terminal positions before buying avoids the most common mistake when replacing a battery. ### The Varta YTB9 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-acid battery, it is 100% recyclable at 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 YTB9 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-tb9-9ah-100a-12v-en.pdf) ## Frequently asked questions ### How is the Varta YTB9 battery installed in the vehicle? 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 (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. ### How long does the Varta YTB9 battery last? Expected lifespan of the Varta YTB9 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 YTB9 battery? Dimensions (length Γ— width Γ— height) are 135Γ—75Γ—139 mm β€” also written as 135x75x139 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 YTB9 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 YTB9 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Varta YTB9? 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€” over 25 years of experience validating automotive batteries. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-10-01*