# Motorcycle battery Varta YTX24HL 12V 21Ah 330A AGM ![Motorcycle battery Varta YTX24HL 12V 21Ah 330A AGM](https://baterias.com/5928-home_default/battery-varta-motorcycle-12v-21ah-ytx24hl-fa-521909033.jpg) > Varta YTX24HL motorcycle battery 12V 21Ah 330A AGM. Official Varta Distributor. Replaces TX24HL. Ref. 521909033. PowerSports AGM Active range. **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-21ah-ytx24hl-fa-521909033 - **Language**: en-GB - **Brand**: VARTA - **Reference**: BCOM-VARTA-521909033 - **EAN**: 4016987169629 - **MPN**: 521909033 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | VARTA | | Reference | 521909033 | | Model | Powersports AGM Active (antes Powersports AGM High Performance) | | Voltage (V) | 12 V | | Largo | 205 mm | | Ancho | 87 mm | | Alto | 162 mm | | TecnologΓ­a | AGM | | EAN | 4016987169629 | | Terminal layout | Positive terminal on the right | | JIS | YTX24 HL | | Hold down | B00 | | Cold cranking amps (EN) | 330 A | | Capacity (C20) | 21 Ah (c20) | | Additional ETN | 521909033K542 | ## Quick description **Varta YTX24HL 12V 21Ah 330A** 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 TX24HL, YTX24HL πŸ”Œ Voltage 12 V ⚑ Capacity 21 Ah C10 πŸ”‹ Cold cranking 330 A EN-1 πŸ“ Dimensions 205Γ—87Γ—162 mm βš™οΈ Technology AGM 🧭 Polarity Positive on the right βš–οΈ Weight 7 kg 🏷️ Model PowerSports AGM Active #️⃣ Mfr. reference 521909033 ## Description ## Varta YTX24HL Powersports AGM Active (formerly Powersports AGM High Performance) 21Ah 330A 12V Motorcycle Battery JIS code YTX24HL 12*V* Voltage 21*Ah* Capacity 330*A* Cold cranking The **Varta YTX24HL motorcycle battery** (reference 521909033) is the **12 V**, **21 Ah** model delivering **330 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 205 Γ— 87 Γ— 162 mm format without any modifications: the same 21 Ah capacity and the same terminal layout (positive on the right). - Direct replacement for the original motorbike, scooter or quad battery. - Construction built to withstand the vibration typical of two-wheelers. - Performs well in the cold and after periods of inactivity. - High cranking peak in a compact, lightweight format. ### Applications of the Varta YTX24HL battery With 21 Ah, the Varta YTX24HL 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 YTX24HL Its external dimensions are 205 Γ— 87 Γ— 162 mm. The positive terminal on the right determines which side the cables end up on: it is the detail that causes the most purchasing 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. For the replacement to be a direct fit, the space taken by your current battery must respect those three dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change. ### The Varta YTX24HL 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 When a workshop recommends Varta it is not down to marketing: it is one of the brands with the lowest return rates in the sector, with an application coverage spanning practically the whole European fleet, from the small hatchback to the commercial vehicle. 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. ### Manufacturer's warranty The Varta YTX24HL 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-tx24hl-21ah-330a-12v-en.pdf) ## Frequently asked questions ### Is the YTX24HL model AGM? What does this technology offer? Yes. The YTX24HL from Varta uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for motorcycles with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions. ### How do I change this battery step by step? 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€” with positive on the right 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 YTX24HL battery last? Expected lifespan of the Varta YTX24HL is 5 to 8 years in mild-climate motorcycle use with Start-Stop. 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 size is this battery? Dimensions (length Γ— width Γ— height) are 205Γ—87Γ—162 mm β€” also written as 205x87x162 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. ### What polarity does the Varta YTX24HL battery have? Polarity: positive on the right. To identify it, place the battery in front of you with the terminals facing you and check which side the positive (+, marked with a red ring) is on. Before buying, verify the polarity matches your current battery: switching polarity forces longer cables or system reconfiguration, with short-circuit risk. ### Will the Varta YTX24HL 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 YTX24HL typically fits a wide range of European vehicles thanks to its standard DIN case format. ### What are the equivalents of the YTX24HL 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 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· 2026-10-27*