Motobatt MB12U · Motorcycle battery 12V 15Ah 160A AGM
Specifications
| Brand | MOTOBATT |
|---|---|
| Part number | MB12U |
| Voltage (V) | 12 |
| Capacity (C20) | 15Ah (c20) |
| Capacity (C10) | 15Ah (c10) |
| Technology | Quadflex |
| Length | 135.00 mm |
| Width | 80.00 mm |
| Height | 161.00 mm |
€170.10
VAT included
4,81/5★★★★★21 reviewsVerified purchases
- ★★★★Julio Garcia:
Aquí tenían la batería más barata que en otros sitios
- ★★★★★Manuel Castro:
Gracias por el asesoramiento
- ★★★★★Jose Francisco Mora:
Puedes llamar, la asesoría es gratis y te ayudan a elegir batería y con la instalación
Motobatt MB12U 12V 15Ah 160A 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
JIS code
YB12AA, YB12ALA, YB12ALA2, YB12AB, YB12CA
Voltage
12 V
Capacity
15 Ah
Cold cranking
160 A
Dimensions
135×80×161 mm
Technology
AGM Quadflex
Weight
4,4 kg
Model
MOTOBATT QUADFLEX
Mfr. reference
MB12U
Motorcycle battery Motobatt YB12AA Quadflex 15Ah 160A 12V
Equivalent JIS codesYB12AAYB12ALAYB12ALA2YB12ABYB12CA
12VVoltage
15AhCapacity
160ACold cranking
4.40kgWeight
The Motobatt YB12AA from the Quadflex range is a motorcycle battery with 15 Ah and 160 A of cold cranking current (EN), designed for motorcycles, scooters, quads and personal watercraft. It measures 135 × 80 × 161 mm, the format sought by anyone replacing a 15 Ah battery in motorcycles.
- Energetic cranking for high-compression engines.
- Resistant to the vibration typical of two wheels.
- Same JIS code as the original battery: fits first time.
- AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
Dimensions, polarity and mounting
In terms of format, the Motobatt YB12AA measures 135 × 80 × 161 mm (length × width × height) and weighs 4.40 kg. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.
What the Motobatt YB12AA is for
With 15 Ah, the Motobatt YB12AA covers the starting of motorcycles, scooters, quads and personal watercraft. The JIS code on your current battery label is the safest way to confirm equivalence. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 4.40 kg.
The Motobatt YB12AA: Quadflex range and AGM technology
The Quadflex is the Motobatt range the YB12AA 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.
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.
Motobatt: the maker behind the YB12AA
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.
Manufacturer's warranty
The Motobatt YB12AA 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. If the bike spends the winter standing, connect a trickle charger: deep discharge through inactivity is the first cause of premature failure.
Delivery times and returns
Order before 6:00 pm with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have 14 days to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email.
BCOM-MOTOBATT-MB12U
Data sheet
- Brand
- MOTOBATT
- Reference
- MB12U
- Model
- MOTOBATT QUADFLEX
- Voltage (V)
- 12
- Length
- 135.00 mm
- Width
- 80.00 mm
- Height
- 161.00 mm
- Weight
- 4.4 Kgs
- Technology
- Quadflex
- JIS
- YB12AA YB12ALA YB12ALA2 YB12AB YB12CA
- Cold cranking amps (EN)
- 160A
- Capacity (C20)
- 15Ah (c20)
- Capacity (C10)
- 15Ah (c10)
Specific References
- MPN
- MB12U
4,81/5
Verified purchasesLatest verified reviews
★★★★★Julio Garcia
02/07/2026baterias.com la mejor web
Aquí tenían la batería más barata que en otros sitios
★★★★★Manuel Castro
06/06/2026No sabía qué batería elegir y me asesoraron
Gracias por el asesoramiento
★★★★★Jose Francisco Mora
18/02/2026Me ayudaron con la instalación
Puedes llamar, la asesoría es gratis y te ayudan a elegir batería y con la instalación
★★★★★Jordi Arias
06/02/20265 estrellas
Gracias a vosotros pude elegir la batería de coche correcta
★★★★★Marc Castro
04/02/2026Llegó en plazo
Gracias a vosotros pude instalar la batería en mi coche
★★★★★Marc Flores
15/01/2026Llega al día siguiente
Me llego en tiempo y todo bien
★★★★★Luis Diaz
15/01/2026No tuve que esperar ni un día
Me alegra que cumplen con los tiempos de envío
★★★★★Diego Jimenez
13/01/2026Ayudan con la instalación
Agradezco que me asesoraran de cómo instalar la batería que compré
★★★★★Miguel Garcia
07/01/2026Muy recomendable
La batería que buscaba la encontré aquí y al mejor precio.
★★★★★Xavier Caballero
18/11/2025Recomendable
Aquí tenían la bateria más barata que en otros sitios
Comparison: Motobatt MB12U vs equivalents
The Motobatt MB12U is interchangeable with these equivalent references: 512011012 (Varta), 512013012 (Varta), 512015012 (Varta), EB12A-A (Exide), EB12AL-A (Exide).
| Product | Specifications | Technology | Price |
|---|---|---|---|
Motobatt
MB12U
This battery
|
12V 15Ah 160A | Quadflex | €170.10 |
Varta
512011012
|
12V 12Ah 160A | Lead-acid | €103.50 |
Varta
512013012
|
12V 12Ah 160A | Lead-acid | €62.50 |
Varta
512015012
|
12V 12Ah 160A | Lead-acid | €128.40 |
Exide
EB12A-A
|
12V 12Ah 165A | Lead-acid | €55.10 |
Exide
EB12AL-A
|
12V 12Ah 165A | Lead-acid | €55.10 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
Recommended accessories
Compatible vehicles
The Motobatt MB12U fits 22 vehicles. Most searched below:
BMWF1990YAMAHAXV1990YAMAHAXT1990BMWG1990HONDACB1990APRILIA MOTORCYCLESPEGASO1990APRILIA MOTORCYCLESSCARABEO1990HONDACB (CB 550 - )1990PEUGEOTGEOPOLIS1990PEUGEOTCITYSTAR1990MALAGUTIMADISON1990KAWASAKIZXR1990
See all 22 compatible vehicles 
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 YB12CA 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 many years does this battery last?
Expected lifespan of the Motobatt YB12CA 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 YB12CA battery?
Dimensions (length × width × height) are 135×80×161 mm — also written as 135x80x161 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 YB12CA 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 YB12CA fits 22 verified vehicle versions in our database.
What are the equivalents of the YB12CA 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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