What Is the MotoBatt MBTX24U Battery?
The MotoBatt MBTX24U is a 12V 25Ah sealed AGM powersports battery built for motorcycles, ATVs, snowmobiles, and utility vehicles. It delivers 350 CCA, weighs 7.3kg, and measures 205mm (L) x 87mm (W) x 162mm (H). The battery arrives factory-activated and fully charged, so there is no acid filling or pre-charge required before installation.
MotoBatt was founded in the US in 2008 and has since become the Official Battery of AMA Pro Road Racing and AMA Pro Flat Track. That pedigree backs up the MBTX24U's performance claims with real-world racing credentials.
This guide helps UK buyers decide whether the MBTX24U is the right battery for their vehicle, covering specifications, fitment, charging requirements, and warranty details.
MBTX24U Key Specifications at a Glance
Here are the headline numbers you need:
- Voltage: 12V
- Capacity: 25Ah
- Cold Cranking Amps (CCA): 350
- Dimensions: 205mm x 87mm x 162mm
- Weight: 7.3kg
- Terminal Configuration: 4C (4 terminals, 2 positive, 2 negative)
The battery ships with 2 terminal caps, stainless steel screws, an Allen wrench, and spacers (MPBS8), so you have everything needed for installation straight out of the box.
A note on CCA ratings: The official MotoBatt datasheet lists the MBTX24U at 350 CCA. Some third-party listings quote figures between 285 and 300 CCA. Treat the official MotoBatt specification as the authoritative source when comparing products. Discrepancies in third-party data are common across the battery industry, and the manufacturer's own testing methodology is the most reliable benchmark.
The MBTX24U uses military-grade AGM separators paired with 99.99% pure lead plates that are larger and thicker than standard construction. This translates to better vibration resistance and longer service life. Real-world reports from UK owners confirm the battery holds its charge after nearly two months of storage without use, reflecting its low self-discharge rate.
The QuadFlex 4-Terminal System Explained
QuadFlex is MotoBatt's proprietary terminal layout. Instead of the conventional single positive and single negative post, the MBTX24U has four terminal posts positioned at each corner of the battery: two positive and two negative.
This design shortens the electrical path from each internal cell to the terminal post. The result is faster, more direct delivery of starting power compared to a standard single-terminal battery. On a cold morning, that shorter path makes a measurable difference.
The multi-terminal layout also gives you flexible mounting options. Because terminals are available at each corner, the MBTX24U can be installed in multiple orientations to fit different battery boxes. If your bike's battery tray was designed for a different terminal position, the QuadFlex system often resolves the problem without modifications.
For riders with accessory-heavy touring bikes, the four terminals are especially useful. Gold Wing owners running heated grips, GPS units, and intercoms can connect accessories to separate terminals rather than daisy-chaining everything onto a single post. This distributes the electrical load more evenly and reduces the risk of loose connections.
Compared to a conventional battery where every accessory shares one positive and one negative terminal, the QuadFlex approach simplifies wiring and improves reliability.
MBTX24U Cross-Reference and Vehicle Compatibility
One of the MBTX24U's strongest selling points is the number of OEM batteries it replaces. It cross-references with over 11 part numbers:
- YTX24HL-BS
- YTX18BS
- YTX18LBS
- GTX18LBS
- Y50N18AA
- Y50N18LA
- Y50N18LA2
- Y50N18LA3
- 12N183
- 12N183A
- SY50N18LAT
This wide cross-reference means the MBTX24U fits a broad range of vehicles relevant to UK riders, including:
- Honda Gold Wing GL1500
- Harley-Davidson FLH 1340
- Kawasaki Vulcan
- Yamaha XV 1100 Virago
- Ducati
- Can-Am Spyder
- Arctic Cat
- Suzuki Cavalcade
For owners of classic and vintage motorcycles, the MBTX24U is particularly valuable. Many original OEM batteries for older Gold Wings, Vulcans, and Cavalcades have been discontinued, making a reliable modern replacement essential. The MBTX24U offers over 35% more capacity than some of the OEM batteries it replaces, making it a genuine upgrade rather than a compromise.
Across the entire MotoBatt range, just 12 part numbers cover approximately 80% of the powersports battery market. That simplification benefits buyers who might otherwise spend hours cross-referencing obscure part numbers. Always verify fitment against your specific year and model before purchasing.
Why Choose AGM Over Standard Lead-Acid?
AGM (Absorbent Glass Mat) batteries use a sealed construction where the electrolyte is absorbed into fibreglass mats between the lead plates. There is no free-flowing acid, which means no spillage risk and no maintenance topping-up.
AGM batteries now account for roughly 25% of the motorcycle battery market, with a typical lifecycle of 30 to 36 months. That is nearly twice the lifespan of conventional flooded lead-acid batteries. They also offer approximately 30% better vibration resistance, which matters significantly in powersports applications where engines and road surfaces generate constant vibration.
The MBTX24U goes further than standard AGM construction. Its military-grade separators and thicker 99.99% pure lead plates provide performance that sits above typical AGM batteries in the same price bracket.
For UK buyers weighing AGM against lithium, the MBTX24U occupies a sensible middle ground. It delivers premium AGM performance without lithium's higher cost or the need for a lithium-specific charger, making it the smart mid-range choice for most riders.
Charging the MBTX24U: What You Must Know
Do not use a standard trickle charger with the MBTX24U. AGM batteries require an AGM-compatible smart charger. Using the wrong charger is the single most common cause of premature AGM battery failure, and it will void your warranty.
During storage, do not allow the battery voltage to drop below 12.2V. For bikes kept off the road over winter, connect a smart charger or battery maintainer on a 6-week cycle to keep the battery in good health.
At hardwarexpress, we stock compatible AGM smart chargers and battery maintainers that pair well with the MBTX24U. Picking up the right charger at the same time as the battery protects your investment from day one.
MBTX24U Warranty and What It Covers
The MBTX24U comes with a 2-year free replacement warranty. That is double the 6-month to 1-year warranty offered by most competitors, including Yuasa and Scorpion, and reflects MotoBatt's confidence in the battery's build quality.
To activate the warranty, register within 21 days of purchase:
- Visit the MotoBatt website.
- Locate the warranty registration section.
- Enter your purchase date and the battery's serial number.
Some customers have reported difficulty with the online registration process. Keep your purchase receipt safe and photograph the battery label immediately after unboxing. Both serve as backup proof of purchase if you encounter any issues with the online system.
The 2-year warranty reinforces a buy-once, buy-right approach. Spending a little more upfront on a battery that is genuinely backed by its manufacturer saves money and frustration in the long run.
Is the MBTX24U Worth the Price?
At approximately £101.57 inc. VAT, the MBTX24U sits at the premium end of the powersports battery market. Price alone, however, does not tell the full story.
Consider the total cost of ownership: a lifespan of up to 36 months, a 2-year warranty, low self-discharge for winter storage, and 350 CCA for reliable cold-weather starts. Cheaper batteries that need replacing every 12 to 18 months quickly cost more over the same period.
UK customer feedback supports the value case. The MBTX24U holds a 4.9 out of 5.0 average rating across 36 verified reviews, with confirmed fitment on the Honda GL1000, Honda CBX 1000, Harley-Davidson FLH 1340, and Can-Am Spyder. That level of consistent positive feedback from real UK riders is difficult to argue with.
With hardwarexpress's same-day dispatch, next-day delivery, and high stock levels, you can have the battery fitted within 24 hours of ordering. For riders who want reliability, wide fitment compatibility, and long-term value, the MBTX24U justifies its price.
Order the MBTX24U from hardwarexpress
We stock the MBTX24U at high stock levels with same-day dispatch available. Next-day delivery is offered via reputable UK carriers, and a click-and-collect service is available from our Coventry store.
Businesses, fleet operators, NHS trusts, schools, and universities can take advantage of our dedicated trade accounts and large order enquiry service. Trading since 2004, we have built our reputation on reliability, expertise, and genuine product knowledge.
Need fitment advice or want to place a larger order? Contact our team, browse the MBTX24U on our product page, and order with confidence from a trusted UK battery supplier.