# Motorcycle battery Motobatt MB5U 12V 7Ah 90A AGM ![Motorcycle battery Motobatt MB5U 12V 7Ah 90A AGM](https://baterias.com/898-home_default/battery-motobatt-mb5u-7ah.jpg) > Motobatt MB5U motorcycle battery 12V 7Ah 90A AGM. Replaces YB5LB, 12N5-3B. QUADFLEX range. Dimensions 120×60×130 mm. Verified OEM fitment. **Category:** [Motorcycle Batteries](https://baterias.com/gb/motorcycle-batteries) → [MOTOBATT](https://baterias.com/gb/motobatt) - **Canonical URL**: https://baterias.com/gb/battery-motobatt-mb5u-7ah - **Language**: en-GB - **Brand**: MOTOBATT - **Reference**: BCOM-MOTOBATT-MB5U - **MPN**: MB5U - **Price**: 189,20 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | MOTOBATT | | Reference | MB5 U | | Model | MOTOBATT QUADFLEX | | Voltage (V) | 12 V | | Largo | 120 mm | | Ancho | 60 mm | | Alto | 130 mm | | Peso | 2.3 kg | | Tecnología | Quadflex | | JIS | YB5 LB 12N5-3 B | | Cold cranking amps (EN) | 90 A | | Capacity (C20) | 7 Ah (c20) | | Capacity (C10) | 7 Ah (c10) | ## Quick description **Motobatt MB5U 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 🏍️ JIS code YB5LB, 12N5-3B 🔌 Voltage 12 V ⚡ Capacity 7 Ah C20 🔋 Cold cranking 90 A EN-1 📏 Dimensions 120×60×130 mm ⚙️ Technology AGM Quadflex ⚖️ Weight 2,3 kg 🏷️ Model MOTOBATT QUADFLEX #️⃣ Mfr. reference MB5U ## Description ## Motorcycle battery Motobatt YB5LB Quadflex 7Ah 90A 12V Equivalent JIS codes YB5LB 12N5-3B 12*V* Voltage 7*Ah* Capacity 90*A* Cold cranking 2.30*kg* Weight The **Motobatt YB5LB** 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. Its 120 × 60 × 130 mm make it the exact replacement for the 7 Ah battery fitted as standard to many motorcycles. - Compact and lightweight format. - Holds its charge through winter storage. - Sealed and ready to fit, no acid handling. - AGM: faster recharging and better cycle resistance than a conventional battery. ### What the Motobatt YB5LB is for Designed for motorcycles, scooters, quads and personal watercraft, the Motobatt YB5LB 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 2.30 kg. ### Will it fit your current battery tray? It has external dimensions of 120 × 60 × 130 mm and weighs 2.30 kg. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters. ### Motobatt: the maker behind the YB5LB Motobatt is the motorcycle battery specialist with Quadflex technology: four terminals that let you connect the battery in any position and a sealed AGM construction ready to fit. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty. ### The Motobatt YB5LB: Quadflex range and AGM technology Within the Motobatt catalogue, the **Quadflex** series groups the references designed for this use. The YB5LB 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. ### Care and maintenance Check the resting voltage before the season (above 12.6 V on a charged battery) and make sure the terminals are clean and tight. If the bike spends the winter standing, connect a trickle charger: deep discharge through inactivity is the first cause of premature failure. ### Warranty and coverage The Motobatt YB5LB 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. ### When you get it and how to return it Orders placed **before [[ks:cutoff]]** with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have **[[ks:return_days]] days** to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships. ## Frequently asked questions ### How is the Motobatt 12N5-3B 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 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. ### What is the service life of the 12N5-3B model? Expected lifespan of the Motobatt 12N5-3B 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 12N5-3B model? Dimensions (length × width × height) are 120×60×130 mm — also written as 120x60x130 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 12N5-3B typically fits a wide range of European vehicles thanks to its standard DIN case format. ### What are the equivalents of the 12N5-3B 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 · 2026-10-20*