Motobatt MB18U · Motorcycle battery 12V 22.5Ah 280A AGM
Specifications
| Brand | MOTOBATT |
|---|---|
| Part number | MB18U |
| Voltage (V) | 12 |
| Capacity (C20) | 22.5 |
| Capacity (C10) | 22 5Ah (c10) |
| Technology | Quadflex |
| Length | 180.00 mm |
| Width | 90.00 mm |
| Height | 162.00 mm |
€369.70
VAT included
4,78/5★★★★★10 reviewsVerified purchases
- ★★★★★Jaime Prieto:
Gracias a vuestra ayuda pude instalar la batería
- ★★★★★Francisco Javier Navarro:
Agradezco que me asesoraran de cómo instalar la batería que compré
- ★★★★★Marcos Martin:
Me alegra que cumplen con los tiempos de envío
Motobatt MB18U 12V 22Ah 280A is a sealed motorcycle battery ready to fit, with the JIS reference your mechanic recognises at a glance. Vibration-resistant, keeps voltage during the winter off-season and cranks first time when you take it out for a ride.
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
Voltage
12 V
Capacity
22 Ah
Cold cranking
280 A
Dimensions
180×90×162 mm
Technology
AGM Quadflex
Weight
6,8 kg
Model
MOTOBATT QUADFLEX
Mfr. reference
MB18U
Motorcycle battery Motobatt MB18U Quadflex 22.5Ah 280A 12V
12VVoltage
22.5AhCapacity
280ACold cranking
6.80kgWeight
The Motobatt MB18U motorcycle battery is rated at 12 V, 22.5 Ah and 280 A of cold cranking current (EN) from the Quadflex range, and is designed for motorcycles, scooters, quads and personal watercraft. It measures 180 × 90 × 162 mm, the format sought by anyone replacing a 22.5 Ah battery in motorcycles.
- Same JIS code as the original battery: fits first time.
- AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
- Energetic cranking for high-compression engines.
- Resistant to the vibration typical of two wheels.
What the Motobatt MB18U is for
The Motobatt MB18U 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 6.80 kg.
The Motobatt MB18U: Quadflex range and AGM technology
Within the Motobatt catalogue, the Quadflex series groups the references designed for this use. The MB18U is the 22.5 Ah model of that family, with the same performance as its siblings in other sizes.
In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery.
Will it fit your current battery tray?
It has external dimensions of 180 × 90 × 162 mm and weighs 6.80 kg. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.
What Motobatt does differently
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. We guarantee that every Motobatt arrives new, charged and with the manufacturer's full warranty.
How to make it last longer
If the bike spends the winter standing, connect a trickle charger: deep discharge through inactivity is the first cause of premature failure. Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators.
Warranty and coverage
The Motobatt MB18U 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-MB18U
Data sheet
- Brand
- MOTOBATT
- Reference
- MB18U
- Model
- MOTOBATT QUADFLEX
- Voltage (V)
- 12
- Length
- 180.00 mm
- Width
- 90.00 mm
- Height
- 162.00 mm
- Weight
- 6.8 Kgs
- Technology
- Quadflex
- Cold cranking amps (EN)
- 280A
- Capacity (C20)
- 22.5
- Capacity (C10)
- 22 5Ah (c10)
Specific References
- MPN
- MB18U
4,78/5
Verified purchasesLatest verified reviews
★★★★★Jaime Prieto
02/07/2026Buen asesoramiento
Gracias a vuestra ayuda pude instalar la batería
★★★★★Francisco Javier Navarro
16/02/2026No sabía que el asesoramiento era gratis, de 10
Agradezco que me asesoraran de cómo instalar la batería que compré
★★★★★Marcos Martin
15/02/2026Recibí la batería en 1 día
Me alegra que cumplen con los tiempos de envío
★★★★★Francisco Marquez
30/12/2025Buen precio, calidad y envío
No tenía ni idea de cómo instalar la batería en mi coche y me ayudaron de principio a fin. Muchas gracias
★★★★★Hugo Gonzalez
09/11/2025Gracias por la ayuda
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 MB18U 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 MB18U battery last?
Expected lifespan of the Motobatt MB18U 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 dimensions of the Motobatt MB18U battery?
Dimensions (length × width × height) are 180×90×162 mm — also written as 180x90x162 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 MB18U 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 16:40–18:00 (Spanish time, CET)). The MB18U typically fits a wide range of European vehicles thanks to its standard DIN case format.
Which batteries are equivalent to the Motobatt MB18U?
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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