# Motorcycle battery Exide AGM12-4 YTX4L-BS 12V 3Ah 50A AGM ![Motorcycle battery Exide AGM12-4 YTX4L-BS 12V 3Ah 50A AGM](https://baterias.com/5314-home_default/battery-exide-agm12-4-12v-3ah-50a.jpg) > Exide AGM12-4 motorcycle battery 12V 3Ah 50A AGM. Replaces YTX4L-BS, YB4L-A, YB4L-B, YTZ5S. MOTO AGM 12V range. Verified OEM fitment. **Category:** [Motorcycle Batteries](https://baterias.com/gb/motorcycle-batteries) → [EXIDE](https://baterias.com/gb/exide) - **Canonical URL**: https://baterias.com/gb/battery-exide-agm12-4-12v-3ah-50a - **Language**: en-GB - **Brand**: EXIDE - **Reference**: BCOM-EXIDE-AGM12-4 - **EAN**: 3661024033954 - **MPN**: AGM12-4 - **Price**: 27,20 € (VAT incl., Spain) - **Last updated**: 2026-11-09 - **Stock**: In stock ## Technical specifications | Feature | Value | |---|---| | Brand | EXIDE | | Reference | AGM12-4 | | Model | EXIDE MOTO AGM 12 V | | Voltage (V) | 12 V | | Largo | 115 mm | | Ancho | 70 mm | | Alto | 85 mm | | Peso | 1.2 kg | | Tecnología | AGM | | EAN | 3661024033954 | | Terminal layout | Positive terminal on the right | | Terminal type | M04 | | JIS | YTX4 L-BS YB4 L-A YB4 L-B YTZ5 S | | Hold down | B0 | | Cold cranking amps (EN) | 50 A | | Capacity (C20) | 3 Ah (c20) | | Capacity (C10) | 3 Ah (c10) | ## Quick description **Exide AGM12-4 12V 3Ah 50A** 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 YTX4L-BS YB4L-A YB4L-B YTZ5S 🔌 Voltage 12 V ⚡ Capacity 3 Ah C20 🔋 Cold cranking 50 A EN-1 📏 Dimensions 115×70×85 mm ⚙️ Technology AGM 🧭 Polarity Positive on the right ⚖️ Weight 1,2 kg 🏷️ Model EXIDE MOTO AGM 12V #️⃣ Mfr. reference AGM12-4 ## Description ## Motorcycle battery Exide AGM12-4 YTX4L-BS Moto AGM 3Ah 50A 12V Equivalent JIS codes YTX4L-BS YB4L-A YB4L-B YTZ5S 12*V* Voltage 3*Ah* Capacity 50*A* Cold cranking 1.20*kg* Weight The **Exide AGM12-4** from the **Moto AGM** range is a motorcycle battery with **3 Ah** and **50 A** of cold cranking current (EN), designed for motorcycles, scooters, quads and personal watercraft. It measures 115 × 70 × 85 mm and the positive terminal on the right, the format sought by anyone replacing a 3 Ah battery in motorcycles. - Energetic cranking for high-compression engines. - Resistant to the vibration typical of two wheels. - Same JIS code as the original battery: fits first time. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. ### Dimensions, polarity and mounting The Exide AGM12-4 is made in the 115 × 70 × 85 mm format and weighs 1.20 kg. The positive terminal on the right decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses a B0 hold-down and M04 terminals, the system that anchors and connects it in the vehicle. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change. ### What the Exide AGM12-4 is for Designed for motorcycles, scooters, quads and personal watercraft, the Exide AGM12-4 replaces the original battery of bikes that use this code or format. Check the position of the positive terminal before ordering. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 1.20 kg, M04 terminals and B0 hold-down. ### The Exide AGM12-4: Moto AGM range and AGM technology Within the Exide catalogue, the **Moto AGM** series groups the references designed for this use. The AGM12-4 is the 3 Ah model of that family, with the same performance as its siblings in other sizes. In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery. ### What Exide does differently Exide is one of the world's largest battery manufacturers and an original-equipment supplier to many car makers. Its European plants produce starter, industrial and leisure batteries under original-equipment quality controls. All the Exide batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Manufacturer's warranty The Exide AGM12-4 comes with the **manufacturer's official warranty**. The warranty does not cover discharge through prolonged inactivity: if the bike stands for months, use a trickle charger. ### Usage and maintenance tips Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. Avoid repeated cranking attempts on a cold bike for long: if it does not start on the third try, let the battery rest for a minute. ### Delivery times and returns Same-day dispatch from our warehouse for in-stock orders placed **before 6:00 pm**: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for **14 days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email. ## Frequently asked questions ### Is this battery AGM? What is it for? Yes, it is AGM. In an AGM battery such as the YTX4L-BS, the electrolyte is not free but absorbed in a glass-fibre mat inside a sealed lead-acid battery. It withstands more cycles than a conventional battery and copes better with heat. ### How should this motorcycle battery be charged? With a 12 V motorcycle charger delivering at most 10 % of its capacity: 0.5 A for its 3 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. ### What is the service life of the YTX4L-BS model? As a guide, you can expect the Exide YTX4L-BS to last 4 to 6 years, keeping it charged when the bike is not in use, although the real figure may be higher or lower. It can vary considerably with usage (short or long journeys), temperature, the condition of the alternator and charging system, power drawn with the engine off and maintenance. Cold demands more at every start and intense heat evaporates the electrolyte. ### What are the dimensions of the Exide YTX4L-BS battery? Measure your motorcycle's battery tray first; if the battery exceeds it by even a millimetre, the hold-down clamp may not close. Length × width × height: 115x70x85 mm. Height is measured to the top of the terminals. ### Which side is the positive terminal on this battery? On the Exide YTX4L-BS, the polarity is positive on the right. 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). To check, stand the battery in front of you with the terminals nearest you: the positive (+) is the one with the red ring. ### Does this battery fit my motorcycle? Not sure? Try your number plate in the finder (DGT/DVLA/KBA detect model and engine) or the "Compatible vehicles" tab, checked by our technical team; if your motorcycle is not there, send us make, model, engine and year on WhatsApp and we will reply during business hours (Mon–Fri 10:00–13:30 and 16:30–18:00 (Spanish time, CET)). The YTX4L-BS typically fits a wide range of European vehicles thanks to its standard DIN case format. If our table and the motorcycle handbook disagree, go with what the manufacturer says. ### What are the equivalents of the YTX4L-BS model? A battery interchangeable with the Exide YTX4L-BS must match it on dimensions (115×70×85 mm), polarity (positive on the right), capacity (3 Ah) and cranking current (50 A). The "Equivalents" section of this page gathers the recommended options with equivalent performance. ### Exide AGM12-4 or Exide ETX4L-BS: which one to choose? Sister reference of the AGM12-4, practically identical on paper. Compared with the AGM12-4 it has the same Ah and cranking power. It costs 15,00 € less. Choose by price and availability: in real use you will not notice a difference. ### Exide AGM12-4 or Varta YT4L-BS: which one to choose? It is the verified Varta equivalent for the AGM12-4 tray. Compared with the AGM12-4 it has 10 A of cold cranking less. It costs 6,00 € less. Decide by price, brand preference and availability: both fit and crank the same. ## Equivalent batteries - [EXIDE ETX4L-BS](https://baterias.com/gb/battery-exide-etx4l-bs-12v-3ah-50a) - [VARTA 503909005](https://baterias.com/gb/battery-varta-motorcycle-12v-3ah-ytx4l-4-fa-503909005) - [VARTA 503014003](https://baterias.com/gb/battery-varta-moto-12v-3ah-yt4l-4-yt4l-bs-503014003) ## 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 · 2026-11-11*