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Motobatt MB12U · Motorcycle battery 12V 15Ah 160A AGM

Specifications

BrandMOTOBATT
Part numberMB12U
Voltage (V)12
Capacity (C20)15Ah (c20)
Capacity (C10)15Ah (c10)
Cold cranking amps (EN)160A
TechnologyQuadflex
Length135.00 mm
Width80.00 mm
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Price: €170.10
VAT included
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Brand: MOTOBATT batteries Part number: MB12U

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 C20
Cold cranking
160 A EN-1
Dimensions
135×80×161 mm
Technology
AGM Quadflex
Weight
4,4 kg
Model
MOTOBATT QUADFLEX
Mfr. reference
MB12U
Logo Motobatt

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.

  • Reference
    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

Recommended accessories — complement the Motobatt MB12U with a charger or tester

Compatible vehicles

The Motobatt MB12U fits 22 vehicles. Most searched below:

See all 22 compatible vehicles

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 our blog. 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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