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Motobatt MB9U Quadflex · Motorcycle battery 11Ah 140A AGM

Specifications

BrandMOTOBATT
Part numberMB9U
Voltage (V)12
Capacity (C20)11Ah (c20)
Capacity (C10)11Ah (c10)
Cold cranking amps (EN)140A
TechnologyQuadflex
Length136.00 mm
Width76.00 mm
See the full specifications →
Price: €119.80
VAT included
Quantity

Brand: MOTOBATT batteries Part number: MB9U

Motobatt MB9U 12V 11Ah 140A 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
12N7-3B, 12N7-4A, YB7A, YB7LB, YB9LA2, YB9B, YB9LB2, 12N9-3B
Voltage
12 V
Capacity
11 Ah C20
Cold cranking
140 A EN-1
Dimensions
136×76×133 mm
Technology
AGM Quadflex
Weight
3,35 kg
Model
MOTOBATT QUADFLEX
Mfr. reference
MB9U

Where it fits: the Motobatt MB9U is one of our motorcycle batteries, belongs to our Motobatt batteries and by capacity it sits among our 11Ah batteries.

Logo Motobatt

Motorcycle battery Motobatt 12N7-3B Quadflex 11Ah 140A 12V

Equivalent JIS codes12N7-3B12N7-4AYB7AYB7LBYB9LA2YB9BYB9LB212N9-3B
12VVoltage
11AhCapacity
140ACold cranking
3.35kgWeight

The Motobatt 12N7-3B from the Quadflex range is a motorcycle battery with 11 Ah and 140 A of cold cranking current (EN), designed for motorcycles, scooters, quads and personal watercraft. It replaces the original battery without adaptation in motorcycles with a 136 × 76 × 133 mm format: same 11 Ah capacity.

  • Resistant to the vibration typical of two wheels.
  • Energetic cranking for high-compression engines.
  • AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
  • Same JIS code as the original battery: fits first time.

What the Motobatt 12N7-3B is for

Designed for motorcycles, scooters, quads and personal watercraft, the Motobatt 12N7-3B 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 3.35 kg.

Will it fit your current battery tray?

The Motobatt 12N7-3B is made in the 136 × 76 × 133 mm format and weighs 3.35 kg. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.

The Motobatt 12N7-3B: Quadflex range and AGM technology

The 12N7-3B is part of the Motobatt Quadflex range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family.

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 12N7-3B

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. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.

Manufacturer's warranty

The Motobatt 12N7-3B 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

If the bike spends the winter standing, connect a trickle charger: deep discharge through inactivity is the first cause of premature failure. 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.

Delivery times and returns

Same-day dispatch from our warehouse for in-stock orders placed before 6:00 pm: 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 14 days if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.

  • Reference
    BCOM-MOTOBATT-MB9U

Data sheet

  • Brand
    MOTOBATT
  • Reference
    MB9U
  • Model
    MOTOBATT QUADFLEX
  • Voltage (V)
    12
  • Length
    136.00 mm
  • Width
    76.00 mm
  • Height
    133.00 mm
  • Weight
    3.35 Kgs
  • Technology
    Quadflex
  • JIS
    12N7-3B 12N7-4A YB7A YB7LB YB9LA2 YB9B YB9LB2 12N9-3B
  • Cold cranking amps (EN)
    140A
  • Capacity (C20)
    11Ah (c20)
  • Capacity (C10)
    11Ah (c10)

Specific References

  • MPN
    MB9U

Download

Datasheet Motobatt MB9U (English)

PDF datasheet of the Motobatt MB9U battery – English

Download (525.13KB)

Other 11Ah batteries: We stock 20 models of 11 Ah to compare by price, technology and cold cranking: see all 11Ah batteries.

Recommended accessories — complement the Motobatt MB9U with a charger or tester

Frequently asked questions

How should this motorcycle battery be charged?

With a 12 V motorcycle charger delivering at most 10 % of its capacity: 1.1 A for its 11 Ah. High-current car chargers can damage it. If the bike is laid up for the winter, keep it on a maintenance charger.

What is the service life of the 12N9-3B model?

As a guide, you can expect the Motobatt 12N9-3B to last 3 to 5 years, keeping it charged when the bike is not in use, although the real figure may be higher or lower. Many factors play a part: how it is used (lots of short trips, for example), temperature (cold makes every start harder and intense heat evaporates the electrolyte), the condition of the alternator and charging system, power drawn with the engine off and maintenance.

What are the measurements of the 12N9-3B model?

Measure your motorcycle's battery tray first; if the battery exceeds it by even a millimetre, the hold-down clamp may not close. Length × width × height: 136x76x133 mm. Height is measured to the top of the terminals.

Is the 12N9-3B valid for my vehicle?

For your own vehicle: type your number plate into the finder (DGT/DVLA/KBA identify model and engine), check the "Compatible vehicles" tab below, listing vehicles verified by our technical team, or message us on WhatsApp with make, model, engine and year; we reply during business hours (Mon–Fri 10:00–13:30 and 16:30–18:00 (Spanish time, CET)). If our table and the motorcycle handbook disagree, go with what the manufacturer says.

Which batteries are equivalent to the Motobatt 12N9-3B?

A direct equivalent needs what this 12N9-3B offers: 136×76×133 mm, the same Ah and CCA. The "Equivalents" section further down lists the recommended alternatives.


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