# Motorcycle battery Motobatt mb2.5u 12V 2.5Ah AGM ![Motorcycle battery Motobatt mb2.5u 12V 2.5Ah AGM](https://baterias.com/902-home_default/battery-motobatt-mb25u.jpg) > Motobatt mb2.5u motorcycle battery 12V 2.5Ah AGM. QUADFLEX range. Dimensions 80×70×105 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-mb25u - **Language**: en-GB - **Brand**: MOTOBATT - **Reference**: BCOM-MOTOBATT-MB2.5U - **MPN**: mb2.5u - **Price**: 369,70 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | MOTOBATT | | Reference | mb2.5 u | | Model | MOTOBATT QUADFLEX | | Voltage (V) | 12 V | | Largo | 80 mm | | Ancho | 70 mm | | Alto | 105 mm | | Peso | 1.18 kg | | Tecnología | Quadflex | | Capacity (C20) | 2.5 | | Capacity (C10) | 2 5 Ah (c10) | ## Quick description **Motobatt mb2.5u 12V 2Ah** 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 📏 Dimensions 80×70×105 mm ⚙️ Technology AGM Quadflex ⚖️ Weight 1,18 kg 🏷️ Model MOTOBATT QUADFLEX #️⃣ Mfr. reference mb2.5u ## Description ## Motorcycle battery Motobatt mb2.5u Quadflex 2.5Ah 12V 12*V* Voltage 2.5*Ah* Capacity 1.18*kg* Weight The **Motobatt mb2.5u motorcycle battery** is rated at **12 V**, **2.5 Ah** from the **Quadflex** range, and is designed for motorcycles, scooters, quads and personal watercraft. It replaces the original battery without adaptation in motorcycles with a 80 × 70 × 105 mm format: same 2.5 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 mb2.5u is for The Motobatt mb2.5u 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 1.18 kg. ### Dimensions, polarity and mounting The Motobatt mb2.5u is made in the 80 × 70 × 105 mm format and weighs 1.18 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. ### Motobatt: the maker behind the mb2.5u 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. ### The Motobatt mb2.5u: Quadflex range and AGM technology The **Quadflex** is the Motobatt range the mb2.5u belongs to: it shares the same construction and quality criteria with the rest of the series, and varies in capacity and format to suit each vehicle. 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. ### How to make it last longer 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. ### Manufacturer's warranty The Motobatt mb2.5u 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. ### When you get it and how to return it Same-day dispatch from our warehouse for in-stock orders placed **before [[ks:cutoff]]**: 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 **[[ks:return_days]] days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email. ## Frequently asked questions ### How is the Motobatt mb2.5u 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 long does the Motobatt mb2.5u battery last? Expected lifespan of the Motobatt mb2.5u 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 mb2.5u model? Dimensions (length × width × height) are 80×70×105 mm — also written as 80x70x105 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 mb2.5u 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 mb2.5u typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Motobatt mb2.5u? 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**: 4.8 / 5 (5 reviews) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2015. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-10-13*