Motobatt MBTX20UHD · Motorcycle battery 12V 21Ah 310A AGM

Battery MOTOBATT MBTX20UHD 12V 21Ah 310A
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  • Battery MOTOBATT MBTX20UHD 12V 21Ah 310A
  • Battery MOTOBATT MBTX20UHD 12V 21Ah 310A
  • Battery MOTOBATT MBTX20UHD 12V 21Ah 310A
  • Battery MOTOBATT MBTX20UHD 12V 21Ah 310A
€149.20
VAT included
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  • 24-48h shipping
  • 14-day returns
  • Secure payment
  • +11,700 reviews

Brand MOTOBATT Reference MBTX20UHD

4,79· 31 reseñas

Motobatt MBTX20UHD 12V 21Ah 310A 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
YTX20BS, YTX20LBS, YTX20HBS, YB16B, YB16LB, YB16CLB
Voltage
12 V
Capacity
21 Ah C20
Cold cranking
310 A EN-1
Dimensions
175×87×155 mm
Technology
AGM Quadflex
Weight
6,5 kg
Model
MOTOBATT QUADFLEX
Mfr. reference
MBTX20UHD
Logo Motobatt

Motorcycle battery Motobatt YTX20BS Quadflex 21Ah 310A 12V

Equivalent JIS codesYTX20BSYTX20LBSYTX20HBSYB16BYB16LBYB16CLB
12VVoltage
21AhCapacity
310ACold cranking
6.50kgWeight

The Motobatt YTX20BS motorcycle battery is rated at 12 V, 21 Ah and 310 A of cold cranking current (EN) from the Quadflex range, and is designed for motorcycles, scooters, quads and personal watercraft. Measuring 175 × 87 × 155 mm, it is the direct replacement for motorcycles fitted from the factory with a 21 Ah battery of this format.

  • Holds its charge through winter storage.
  • Compact and lightweight format.
  • AGM: faster recharging and better cycle resistance than a conventional battery.
  • Sealed and ready to fit, no acid handling.

Size, terminals and hold-down of the Motobatt YTX20BS

It has external dimensions of 175 × 87 × 155 mm and weighs 6.50 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.

What the Motobatt YTX20BS is for

Designed for motorcycles, scooters, quads and personal watercraft, the Motobatt YTX20BS 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 6.50 kg.

The Motobatt YTX20BS: Quadflex range and AGM technology

The YTX20BS 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.

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.

Motobatt: the maker behind the YTX20BS

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. We guarantee that every Motobatt arrives new, charged and with the manufacturer's full warranty.

Manufacturer's warranty

The Motobatt YTX20BS 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.

How to make it last longer

Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. If the bike spends the winter standing, connect a trickle charger: deep discharge through inactivity is the first cause of premature failure.

Shipping, delivery and returns

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-MBTX20UHD

Data sheet

Brand
MOTOBATT
Reference
MBTX20UHD
Model
MOTOBATT QUADFLEX
Voltage (V)
12
Length
175.00 mm
Width
87.00 mm
Height
155.00 mm
Weight
6.5 Kgs
Technology
Quadflex
JIS
YTX20BS YTX20LBS YTX20HBS YB16B YB16LB YB16CLB
Cold cranking amps (EN)
310A
Capacity (C20)
21Ah (c20)
Capacity (C10)
21Ah (c10)

Specific References

MPN
MBTX20UHD

Comparison: Motobatt MBTX20UHD vs equivalents — alternatives with the same dimensions, Ah and CCA

The Motobatt MBTX20UHD is interchangeable with these equivalent references: MBTX20U (Motobatt), 518902026 (Varta).

Product Specifications Technology Price
Motobatt MBTX20UHD Motobatt MBTX20UHD This battery ★ 4,8 12V 21Ah 310A Quadflex €149.20
Motobatt MBTX20U Motobatt MBTX20U ★ 4,8 12V 21Ah 310A Quadflex €149.20
Varta 518902026 Varta 518902026 ★ 4,8 12V 18Ah 250A AGM €112.60

Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.

Recommended accessories — complement the Motobatt MBTX20UHD with a charger or tester

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.

⏱ 10-15 min🛠 Tools: 8 mm wrench (some bikes use 10 mm) · Protective gloves
  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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 do I check that the Motobatt YB16CLB battery fits my vehicle?

Three ways: 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 for the YB16CLB; 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)).

How is the Motobatt YB16CLB 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 months of warranty does the YB16CLB motorcycle model cover?

This Motobatt YB16CLB motorcycle battery comes with 6 months of official manufacturer warranty against manufacturing defects. On motorcycles, jet skis and quads, the standard warranty is shorter because long inactive periods accelerate natural sulfation. If the motorcycle will be parked for over 2 weeks, hook it up to a maintenance charger; it is the simplest way to prolong the battery's lifespan.

How long does Motobatt YB16CLB delivery take?

In mainland Spain and Portugal it arrives in 24 h if you order before 6:00 pm and the battery is in stock — it leaves the same day and arrives the next business day. Afternoon or weekend orders ship the next business day. For Balearics, Canaries and other EU destinations, allow 2-5 days. Shipping cost is calculated in the cart based on destination and service (standard, express, cash on delivery). Tracking number is sent by email + SMS as soon as the parcel ships.

Can I return the Motobatt YB16CLB battery if it doesn't fit or doesn't work?

Yes. You have 14 days from delivery to return it. In mainland Spain and Portugal returns are FREE — we cover the return shipping cost via prepaid label. In other EU countries the return shipping cost is the customer's. It must arrive in its original packaging with no signs of installation. If it was defective, the warranty covers replacement even after the 14-day period.

How much does the Motobatt YB16CLB battery cost?

The current price at baterias.com is €149.20 (VAT included; €123.31 excl. VAT), updated every 24 hours. The applicable VAT may vary with the destination country and is confirmed in the cart. Shipping cost is calculated in the cart based on destination and chosen service (standard, express, cash on delivery).

Where can I buy the Motobatt YB16CLB battery?

At baterias.com — authorised distributor with real stock, Express 24h delivery in mainland Spain and Portugal if you order before 6:00 pm, and full manufacturer warranty. Shipping cost is calculated in the cart based on destination and chosen service (standard, express, cash on delivery). Secure payment by card, Bizum, PayPal or bank transfer. If you choose at-home installation, our technician will take the used battery and dispose of it through an authorised collection point.

How long does the Motobatt YB16CLB battery last?

Expected lifespan of the Motobatt YB16CLB 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 YB16CLB battery?

Dimensions (length × width × height) are 175×87×155 mm — also written as 175x87x155 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.

How much does the Motobatt YB16CLB battery weigh?

It weighs 6,5 kg. Most of the weight is lead. If you plan to fit it yourself, use gloves and a carrying strap (AGM batteries are slightly heavier than conventional due to the absorbent glass-mat fibre).

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 YB16CLB typically fits a wide range of European vehicles thanks to its standard DIN case format.

Which batteries are equivalent to the Motobatt YB16CLB?

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.

Which is better: Motobatt YB16CLB or an alternative from another brand?

This battery and its equivalents from Bosch, Tudor or Exide are technically comparable: same dimensions, same voltage and same capacity. The differences are warranty (Varta and Bosch: 2 years; Tudor and Exide: 2 years on the equivalent line), manufacturing plant (Varta and Bosch share origin in the Clarios Group; Tudor and Exide belong to Exide Technologies) and price. For private use any of these brands will give 4-6 years of life. Compare them in the "Equivalents" section.

What real-world experiences are there with this battery?

The average rating of the Motobatt YB16CLB on baterias.com is 4.79/5 from 31 verified customer reviews. The product rating, when available, is shown on the product page next to the stars. You can also check our public Trustpilot profile at shop level (4.5/5 from 11,700+ verified reviews). Most-praised points: reliable cold start, lifespan above 5 years and fast delivery; most common complaints mention BMS-equipped motorcycles that need OBD registration after fitting.


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