Motobatt MB5U · Motorcycle battery 12V 7Ah 90A AGM
Specifications
| Brand | MOTOBATT |
|---|---|
| Part number | MB5U |
| Voltage (V) | 12 |
| Capacity (C20) | 7Ah (c20) |
| Capacity (C10) | 7Ah (c10) |
| Technology | Quadflex |
| Length | 120.00 mm |
| Width | 60.00 mm |
| Height | 130.00 mm |
€189.20
VAT included
4,89/5★★★★★8 reviewsVerified purchases
- ★★★★★Andres Castillo:
Gracias a vuestra ayuda pude instalar la batería
- ★★★★★Adrian Bravo:
Agradezco que me asesoraran de cómo instalar la batería que compré
- ★★★★★Jose Francisco Garrido:
Me alegra que cumplen con los tiempos de envío
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 referenceas your bike's original — fits first time
- Sealed and ready to useno acid handling, no refills
- Survives winter storageholds charge through long off-season
JIS code
YB5LB, 12N5-3B
Voltage
12 V
Capacity
7 Ah
Cold cranking
90 A
Dimensions
120×60×130 mm
Technology
AGM Quadflex
Weight
2,3 kg
Model
MOTOBATT QUADFLEX
Mfr. reference
MB5U
Motorcycle battery Motobatt YB5LB Quadflex 7Ah 90A 12V
Equivalent JIS codesYB5LB12N5-3B
12VVoltage
7AhCapacity
90ACold cranking
2.30kgWeight
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 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 and Canary 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.
BCOM-MOTOBATT-MB5U
Data sheet
- Brand
- MOTOBATT
- Reference
- MB5U
- Model
- MOTOBATT QUADFLEX
- Voltage (V)
- 12
- Length
- 120.00 mm
- Width
- 60.00 mm
- Height
- 130.00 mm
- Weight
- 2.3 Kgs
- Technology
- Quadflex
- JIS
- YB5LB 12N5-3B
- Cold cranking amps (EN)
- 90A
- Capacity (C20)
- 7Ah (c20)
- Capacity (C10)
- 7Ah (c10)
Specific References
- MPN
- MB5U
4,89/5
Verified purchasesLatest verified reviews
★★★★★Andres Castillo
27/05/2026Muy buen asesoramiento
Gracias a vuestra ayuda pude instalar la batería
★★★★★Adrian Bravo
07/02/2026Se preocupan por asesorarte de la mejor manera
Agradezco que me asesoraran de cómo instalar la batería que compré
★★★★★Jose Francisco Garrido
02/02/2026No tardó nada
Me alegra que cumplen con los tiempos de envío
★★★★★Josep Gutierrez
30/01/2026Excelente tienda de baterías de coches
No tenía ni idea de cómo instalar la batería en mi coche y me ayudaron de principio a fin. Muchas gracias
★★★★★Francisco Javier Flores
03/10/2025Excelente asesoramiento
Gracias a vuestra ayuda pude instalar la bateria
Recommended accessories
How to change the battery
Guide to replace your motorcycle battery in 10-15 minutes. Motorcycle batteries are light (2-5 kg) and usually need an 8 mm wrench.
Step 1. Prepare the vehicle
Park on a flat surface, switch off the engine and remove the key. Make sure all lights and electrical accessories are off. Wait 1-2 minutes before starting.
Step 2. Locate the battery compartment
On motorcycles it is usually under the seat, in the rear cowl or behind a side panel. Check the manual — access varies a lot between models.
Step 3. Disconnect the negative (−) terminal
Use the 10 mm wrench to loosen the negative cable nut (black, marked −) and remove the cable from the post. Move it aside so it cannot touch any bodywork.
Step 4. Disconnect the positive (+) terminal
Repeat with the positive cable (red, marked +). Important: never let a terminal touch metal of the car while the other is still connected.
Step 5. Remove the old battery
Loosen the hold-down clamp or the straps that secure it. Lift the battery carefully — typical weight 2-5 kg. Check the terminals are not corroded before fitting the new one.
Step 6. Install the new battery
Place the battery in the same orientation as the old one (positive terminal on the same side). Tighten the hold-down clamp firmly.
Step 7. Connect the cables
Connect the positive (+) terminal first, then the negative (−). Tighten the nuts with the wrench until each terminal does not move. Apply anti-spark grease if you have any.
Step 8. Verify the engine starts
Close the bonnet. Start the engine to confirm everything works. On cars with Start-Stop or a BMS, you may need to register the battery via OBD so the alternator applies the correct charging profile.
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 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.
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.
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