# Motorcycle battery Motobatt MB5.5U 12V 7Ah 90A AGM ![Motorcycle battery Motobatt MB5.5U 12V 7Ah 90A AGM](https://baterias.com/900-home_default/battery-motobatt-mb55u-7ah.jpg) > Motobatt MB5.5U motorcycle battery 12V 7Ah 90A AGM. QUADFLEX range. Dimensions 135×60×130 mm. Verified OEM cross-references and exact fit for your bike. **Category:** [Motorcycle Batteries](https://baterias.com/gb/motorcycle-batteries) → [MOTOBATT](https://baterias.com/gb/motobatt) - **Canonical URL**: https://baterias.com/gb/battery-motobatt-mb55u-7ah - **Language**: en-GB - **Brand**: MOTOBATT - **Reference**: BCOM-MOTOBATT-MB5.5U - **MPN**: MB5.5U - **Price**: 369,70 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | MOTOBATT | | Reference | MB5.5 U | | Model | MOTOBATT QUADFLEX | | Voltage (V) | 12 V | | Largo | 135 mm | | Ancho | 60 mm | | Alto | 130 mm | | Peso | 2.48 kg | | Tecnología | Quadflex | | Cold cranking amps (EN) | 90 A | | Capacity (C20) | 7 | | Capacity (C10) | 7 Ah (c10) | ## Quick description **Motobatt MB5.5U 12V 7Ah 90A** 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 🔌 Voltage 12 V ⚡ Capacity 7 Ah C10 🔋 Cold cranking 90 A EN-1 📏 Dimensions 135×60×130 mm ⚙️ Technology AGM Quadflex ⚖️ Weight 2,48 kg 🏷️ Model MOTOBATT QUADFLEX #️⃣ Mfr. reference MB5.5U ## Description ## Motorcycle battery Motobatt MB5.5U Quadflex 7Ah 90A 12V 12*V* Voltage 7*Ah* Capacity 90*A* Cold cranking 2.48*kg* Weight The **Motobatt MB5.5U** from the **Quadflex** range is a motorcycle battery with **7 Ah** and **90 A** of cold cranking current (EN), designed for motorcycles, scooters, quads and personal watercraft. It replaces the original battery without adaptation in motorcycles with a 135 × 60 × 130 mm format: same 7 Ah capacity. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. - Same JIS code as the original battery: fits first time. - Resistant to the vibration typical of two wheels. - Energetic cranking for high-compression engines. ### What the Motobatt MB5.5U is for The Motobatt MB5.5U is a common replacement in motorcycles, scooters, quads and personal watercraft. If your bike spends the winter standing, a trickle charger stops it reaching spring flat. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 2.48 kg. ### Size, terminals and hold-down of the Motobatt MB5.5U It has external dimensions of 135 × 60 × 130 mm and weighs 2.48 kg. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### The Motobatt MB5.5U: Quadflex range and AGM technology Within the Motobatt catalogue, the **Quadflex** series groups the references designed for this use. The MB5.5U is the 7 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 Motobatt batteries Motobatt batteries stand out for capacity and cranking current above the original battery in the same tray, thanks to a compact AGM design and the four-terminal Quadflex system. All the Motobatt batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Manufacturer's warranty The Motobatt MB5.5U 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. ### Shipping, delivery 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 ### How do I fit the MB5.5U 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 (−) 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 long does the Motobatt MB5.5U battery last? Expected lifespan of the Motobatt MB5.5U 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 measurements of the MB5.5U model? Dimensions (length × width × height) are 135×60×130 mm — also written as 135x60x130 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. ### Will the Motobatt MB5.5U 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 MB5.5U typically fits a wide range of European vehicles thanks to its standard DIN case format. ### What are the equivalents of the MB5.5U 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. ## 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 · 2026-10-26*