Motobatt MBTX20UHD · Motorcycle battery 12V 21Ah 310A AGM
Motorcycle battery Motobatt MBTX20UHD 12V 21Ah 310A AGM images
Specifications
| Brand | MOTOBATT |
|---|---|
| Part number | MBTX20UHD |
| Voltage (V) | 12 |
| Capacity (C20) | 21Ah (c20) |
| Capacity (C10) | 21Ah (c10) |
| Cold cranking amps (EN) | 310A |
| Technology | Quadflex |
| Length | 175.00 mm |
| Width | 87.00 mm |
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
Motorcycle battery Motobatt YTX20BS Quadflex 21Ah 310A 12V
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 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.
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ReferenceBCOM-MOTOBATT-MBTX20UHD
Data sheet
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BrandMOTOBATT
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ReferenceMBTX20UHD
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ModelMOTOBATT QUADFLEX
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Voltage (V)12
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Length175.00 mm
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Width87.00 mm
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Height155.00 mm
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Weight6.5 Kgs
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TechnologyQuadflex
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JISYTX20BS YTX20LBS YTX20HBS YB16B YB16LB YB16CLB
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Cold cranking amps (EN)310A
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Capacity (C20)21Ah (c20)
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Capacity (C10)21Ah (c10)
Specific References
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MPNMBTX20UHD
Codes and references Motobatt MBTX20UHD
| Brand | Motobatt |
|---|---|
| Manufacturer range | Powersports AGM |
| Manufacturer part number (MPN) | MBTX20UHD |
| Also known as | 518902026 · Motobatt Powersports AGM MBTX20UHD |
| JIS equivalents | YTX20BS · YTX20LBS · YTX20HBS · YB16B · YB16LB · YB16CLB |
| ETN code | 518902026A514 (short form 518 902 026) |
| Dimensions (length × width × height) | 175 × 87 × 155 mm (175x87x155) |
| Not to be confused with | FTX20-BS (different version) · ETX20H-BS (different version) · FTX20A-BS (different size) · ETX20HL-BS (reversed polarity) |
Comparison: Motobatt MBTX20UHD vs equivalents
The Motobatt MBTX20UHD is interchangeable with these equivalent references: MBTX20U (Motobatt).
| Product | Specifications | Technology | Price |
|---|---|---|---|
Motobatt
MBTX20UHD
This battery
|
12V 18Ah 250A | AGM | €149.20 |
Motobatt
MBTX20U
|
12V 18Ah 250A | AGM | €149.20 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
Recommended accessories
Compatible vehicles
The Motobatt MBTX20UHD fits 42 vehicles. Most searched below:
Frequently asked questions
Is the YB16CLB model AGM? What does this technology offer?
Yes. The YB16CLB from Motobatt uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for motorcycles with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions.
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 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 — with positive on the left 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 YB16CLB battery last?
Expected lifespan of the Motobatt YB16CLB is 5 to 8 years in mild-climate motorcycle use with Start-Stop. 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.
On which side is the positive of the YB16CLB model?
Polarity: positive on the left. To identify it, place the battery in front of you with the terminals facing you and check which side the positive (+, marked with a red ring) is on. Before buying, verify the polarity matches your current battery: switching polarity forces longer cables or system reconfiguration, with short-circuit risk.
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 fits 42 verified vehicle versions in our database.
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.
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