# Motorcycle battery Motobatt MBT4BB Quadflex 12V 2.5Ah 40A AGM ![Motorcycle battery Motobatt MBT4BB Quadflex 12V 2.5Ah 40A AGM](https://baterias.com/889-home_default/battery-motobatt-mbt4bb.jpg) > Motobatt MBT4BB motorcycle battery 12V 2.5Ah 40A AGM. QUADFLEX range. Dimensions 113×38×87 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-mbt4bb - **Language**: en-GB - **Brand**: MOTOBATT - **Reference**: BCOM-MOTOBATT-MBT4BB - **MPN**: MBT4BB - **Price**: 369,70 € (VAT incl., Spain) - **Last updated**: 2026-10-04 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | MOTOBATT | | Reference | MBT4 BB | | Model | MOTOBATT QUADFLEX | | Voltage (V) | 12 V | | Largo | 113 mm | | Ancho | 38 mm | | Alto | 87 mm | | Peso | 1.05 kg | | Tecnología | Quadflex | | Cold cranking amps (EN) | 40 A | | Capacity (C20) | 2.5 | | Capacity (C10) | 2 5 Ah (c10) | ## Quick description **Motobatt MBT4BB 12V 2Ah 40A** 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 2 Ah C10 🔋 Cold cranking 40 A EN-1 📏 Dimensions 113×38×87 mm ⚙️ Technology AGM Quadflex ⚖️ Weight 1,05 kg 🏷️ Model MOTOBATT QUADFLEX #️⃣ Mfr. reference MBT4BB ## Description ## Motorcycle battery Motobatt MBT4BB Quadflex 2.5Ah 40A 12V 12*V* Voltage 2.5*Ah* Capacity 40*A* Cold cranking 1.05*kg* Weight The **Motobatt MBT4BB motorcycle battery** is rated at **12 V**, **2.5 Ah** and **40 A** of cold cranking current (EN) from the **Quadflex** range, and is designed for motorcycles, scooters, quads and personal watercraft. Its 113 × 38 × 87 mm make it the exact replacement for the 2.5 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 MBT4BB is for The Motobatt MBT4BB 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 1.05 kg. ### Will it fit your current battery tray? The Motobatt MBT4BB is made in the 113 × 38 × 87 mm format and weighs 1.05 kg. 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. ### The Motobatt MBT4BB: Quadflex range and AGM technology The MBT4BB is part of the Motobatt **Quadflex** range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family. AGM means the acid is held in a glass mat instead of floating free. That is why the battery can be installed in the cabin without gases, survives more cycles and recovers its charge quickly. ### 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. ### Official warranty The Motobatt MBT4BB 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. ### Care and maintenance 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. Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. ### When you get it and how to return it Orders placed **before 6:00 pm** 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 **14 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 should this motorcycle battery be charged? With a 12 V motorcycle charger delivering at most 10 % of its capacity: 0.5 A for its 2.5 Ah. High-current car chargers can damage it. If the bike is laid up for the winter, keep it on a maintenance charger. ### What is the service life of the MBT4BB model? Expected lifespan of the Motobatt MBT4BB is 3 to 5 years, keeping it charged when the bike is not in use. 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 MBT4BB model? Dimensions (length × width × height) are 113×38×87 mm — also written as 113x38x87 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. ### Is the MBT4BB valid for my vehicle? 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 16:30–18:00 (Spanish time, CET)). The MBT4BB typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Motobatt MBT4BB? 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 · 2026-11-06*