# Motorcycle battery Exide ETR4A-BS 12V 2Ah 35A AGM ![Motorcycle battery Exide ETR4A-BS 12V 2Ah 35A AGM](https://baterias.com/5745-home_default/battery-exide-etr4a-bs-12v-2ah-35a.jpg) > Exide ETR4A-BS motorcycle battery 12V 2Ah 35A AGM. MOTO AGM 12V range. Dimensions 115×50×85 mm, + terminal on the right. 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-etr4a-bs-12v-2ah-35a - **Language**: en-GB - **Brand**: EXIDE - **Reference**: BCOM-EXIDE-ETR4A-BS - **EAN**: 3661024033718 - **MPN**: ETR4A-BS - **Price**: 15,20 € - **Stock**: In stock ## Technical specifications | Feature | Value | |---|---| | Brand | EXIDE | | Reference | ETR4 A-BS | | Model | EXIDE MOTO AGM 12 V | | Voltage (V) | 12 V | | Largo | 115 cm | | Ancho | 50 cm | | Alto | 85 cm | | Peso | 1 kg | | Tecnología | AGM | | EAN | 3661024033718 | | Terminal layout | Positive terminal on the right | | Terminal type | M14 | | Hold down | B0 | | Cold cranking amps (EN) | 35 A | | Capacity (C20) | 2 Ah (c20) | | Capacity (C10) | 2.3 Ah (c10) | ## Quick description **Exide ETR4A-BS 12V 2Ah 35A** 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 ETR4A-BS 🔌 Voltage 12 V ⚡ Capacity 2 Ah C20 🔋 Cold cranking 35 A EN-1 📏 Dimensions 115×50×85 mm ⚙️ Technology AGM 🧭 Polarity Positive on the right ⚖️ Weight 1 kg 🏷️ Model EXIDE MOTO AGM 12V #️⃣ Mfr. reference ETR4A-BS ## Description ## Motorcycle battery Exide ETR4A-BS Moto AGM 2Ah 35A 12V 12*V* Voltage 2*Ah* Capacity 35*A* Cold cranking 1*kg* Weight The **Exide ETR4A-BS** from the **Moto AGM** range is a motorcycle battery with **2 Ah** and **35 A** of cold cranking current (EN), designed for motorcycles, scooters, quads and personal watercraft. Measuring 115 × 50 × 85 mm and the positive terminal on the right, it is the direct replacement for motorcycles fitted from the factory with a 2 Ah battery of this format. - Holds its charge through winter storage. - Compact and lightweight format. - AGM: faster recharging and better cycle resistance than a conventional battery. - Sealed and ready to fit, no acid handling. ### Dimensions, polarity and mounting The Exide ETR4A-BS is made in the 115 × 50 × 85 mm format and weighs 1 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 M14 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 ETR4A-BS is for Designed for motorcycles, scooters, quads and personal watercraft, the Exide ETR4A-BS 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 kg, M14 terminals and B0 hold-down. ### The Exide ETR4A-BS: Moto AGM range and AGM technology Within the Exide catalogue, the **Moto AGM** series groups the references designed for this use. The ETR4A-BS is the 2 Ah model of that family, with the same performance as its siblings in other sizes. AGM (Absorbent Glass Mat) technology seals the electrolyte in glass microfibre. The result is a maintenance-free battery that is highly vibration-resistant and able to withstand deep discharges that would ruin a classic lead-acid battery. ### Why choose Exide batteries With more than a century of history, Exide Technologies manufactures automotive, marine, motorcycle and industrial batteries in Europe. Its presence as original equipment on assembly lines vouches for the quality of every reference. All the Exide batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Manufacturer's warranty The Exide ETR4A-BS 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 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. If the bike spends the winter standing, connect a trickle charger: deep discharge through inactivity is the first cause of premature failure. ### Delivery times and returns Order **before [[ks:cutoff]]** with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have **[[ks:return_days]] days** to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email. ## Frequently asked questions ### Is this battery AGM? What is it for? Yes. The ETR4A-BS from Exide 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 is the Exide ETR4A-BS 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 (−) 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 — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On motorcycles with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### How many years does this battery last? Expected lifespan of the Exide ETR4A-BS 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 × width × height) are 115×50×85 mm — also written as 115x50x85 mm — 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. ### Does this 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 — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The ETR4A-BS typically fits a wide range of European vehicles thanks to its standard DIN case format. ### What are the equivalents of the ETR4A-BS 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 — 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. ## Reviews - **Average rating**: 4.78 / 5 (24 reviews) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-09-28*