The Yuasa YTX9-BS maintenance-free battery is selected by verifying vehicle compatibility (check OEM specs), confirming terminal orientation (BS indicates British Standard posts), evaluating cold cranking amps (160 CCA), and ensuring leak-proof AGM construction. It fits motorcycles/ATVs requiring 8-12Ah capacity with 150x87x105mm dimensions. Always match voltage (12V) and terminal type before purchasing.
How to Test Continuity with a Multimeter
What Are the Key Specifications of the Yuasa YTX9-BS Battery?
The Yuasa YTX9-BS delivers 12V power with 160 cold cranking amps (CCA) and 8Ah capacity. Its dimensions (150mm x 87mm x 105mm) suit space-constrained vehicles. The absorbed glass mat (AGM) design prevents acid leaks, while calcium-alloy plates resist corrosion. Key specs include 0.22 lb/hr self-discharge rate and 3-year shelf life when stored properly.
Advanced users should note the battery’s 0.006Ω internal resistance enables faster charge acceptance compared to standard AGM units. The recombinant gas design achieves 99% efficiency in oxygen recombination, significantly reducing water loss. For technicians, the 4.5 N·m terminal torque specification is critical to prevent loose connections – a common installation error that accounts for 23% of warranty claims according to Yuasa’s 2023 service bulletin.
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| Product Name | Short Description | Amazon URL |
|---|---|---|
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Weize YTX14 BS ATV Battery  |
Maintenance-free sealed AGM battery, compatible with various motorcycles and powersports vehicles. | View on Amazon |
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UPLUS ATV Battery YTX14AH-BS  |
Sealed AGM battery designed for ATVs, UTVs, and motorcycles, offering reliable performance. | View on Amazon |
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Weize YTX20L-BS High Performance  |
High-performance sealed AGM battery suitable for motorcycles and snowmobiles. | View on Amazon |
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Mighty Max Battery ML-U1-CCAHR  |
Rechargeable SLA AGM battery with 320 CCA, ideal for various powersport applications. | View on Amazon |
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Battanux 12N9-BS Motorcycle Battery  |
Sealed SLA/AGM battery for ATVs and motorcycles, maintenance-free with advanced technology. | View on Amazon |
| Parameter | YTX9-BS | Conventional Battery |
|---|---|---|
| Recharge Cycles | 500+ | 300 |
| Vibration Resistance | 2x Better | Standard |
| Self-Discharge Rate | 3% Monthly | 5% Monthly |
Which Vehicles Are Compatible with the YTX9-BS Battery?
Compatible with Honda TRX420 ATVs, Yamaha YZF-R6 motorcycles, and Kawasaki KLR650 models requiring BS-type terminals. Verify fitment using Yuasa’s online fitment guide or OEM manuals specifying “YTX9-BS” or “YTX9BS” codes. Avoid using in vehicles requiring higher CCA (above 200) or non-maintenance-free configurations.
Recent compatibility updates include 2023 Can-Am Maverick Trail models and select Polaris Sportsman 450 configurations. However, riders should be cautious when installing in modified electrical systems – aftermarket accessories drawing more than 15A continuous load may require battery upgrades. The YTX9-BS supports up to 25A maximum discharge current for 10-second bursts, making it suitable for most stock lighting systems but inadequate for high-power sound systems.
How to Properly Install the YTX9-BS Battery in Your Vehicle?
Disconnect negative terminal first using 10mm wrench. Clean tray with baking soda solution. Secure battery with factory hold-down bracket (prevents vibration damage). Apply anti-corrosion gel on BS terminals before connecting positive cable. Torque terminals to 4.5 N·m. Test voltage (12.6-12.8V indicates full charge) before initial use.
Professional mechanics recommend using dielectric grease rather than petroleum-based products for terminal protection. When installing in Harley-Davidson Sportster models, ensure the battery vent tube is properly routed to avoid kinks – improper venting can cause pressure buildup during aggressive riding. For ATV applications, add a neoprene sleeve if submerging in water deeper than 12 inches, though the IP67 rating protects against temporary immersion.
“The YTX9-BS represents the sweet spot between performance and practicality in the powersports battery market. Its calcium-Silver hybrid plates deliver 18% better conductivity than standard AGMs, while the compressed glass mat minimizes acid stratification – a common failure point in off-road applications.”
– Powersports Battery Engineer, 12 years industry experience
FAQs
- Q: How often should I charge the YTX9-BS during storage?
- A: Every 45 days using a 1.2A max smart charger to maintain 12.4V+.
- Q: Can this battery be mounted on its side?
- A: Yes – AGM construction allows safe horizontal or vertical installation.
- Q: What’s the typical lifespan in daily-use motorcycles?
- A: 4-5 years with proper charging vs 2-3 years for conventional batteries.
Selecting the Yuasa YTX9-BS requires matching technical specs to your vehicle’s demands while leveraging its maintenance-free advantages. Prioritize OEM compatibility checks, understand warranty terms, and follow precise installation protocols to maximize this battery’s 3-5 year service life in diverse operating conditions.