Product Description
Yuasa YT9B-BS AGM Motorcycle Battery
The Yuasa YT9B-BS is a 12V AGM powersport battery built for dependable starts in popular Yamaha motorcycle, ATV, and scooter applications. This Group 9B battery delivers strong cranking performance with rugged, vibration-resistant construction, plus the absorbed glass mat (AGM) design eliminates maintenance once properly filled and charged. Trusted Yuasa battery quality ensures reliable performance, ride after ride.
Key Features & Benefits
- Bottle-Supplied Activation – Includes acid pack; requires filling and charging before use.
- AGM Construction – Exceptional vibration resistance for greater durability and longer service life.
- Group 9B – Direct-fit replacement for applications calling for GT9B-4 or CT9B-4 batteries.
- Low Self-Discharge – Maintains charge longer between rides than conventional flooded batteries.
- Temperature Tolerant – Dependable starting power in both high and low temperatures.
- Powersport Terminals – Top/front connections provide flexible installations with included hardware.
- Left-Positive Polarity – Verify your current battery’s terminal positions before purchase.
Note: Group 9B is NOT interchangeable with Group 9 or 9-B. Verify measurements on these models carefully.
Proven Yuasa Quality You Can Trust
The Yuasa YT9B-BS stands apart from standard powersport batteries with its robust AGM design that provides higher energy density and superior resistance to vibration and shock. Its low internal resistance allows efficient energy transfer and faster recovery between starts, while its sealed construction eliminates maintenance concerns and prevents leaks. Known worldwide for quality and dependability, Yuasa continues its legacy of excellence with a battery that ensures strong starts, extended service life, and performance that riders trust.
| Voltage | 12V |
| Group Size | 9B |
| Type | AGM |
| Cold Cranking Amps | 115 |
| Capacity | 8 Ah (10hr) |
| Factory Activated | No |
| Polarity | + Left / - Right |
| Length | 5.91" (150mm) |
| Width | 2.75" (70mm) |
| Height | 4.13" (105mm) |
| Weight | 8.7 lbs |
| Warranty | 1 Year |
YT9B-BS Battery Cross Reference
Replacement for Group 9B Batteries: 9B-BS, CT9B-4, CT9B-BS, CYLA9B4XTA, CYT9B-BS, GT9B-4, MBT9B4, PT9B-4, PT9B-BS, ST9B-4, UT9B-4, UT9B-BS, VT9B-4, XTA9B-BS, YT9B-4, YT9BBSFP.
Note: Group 9B is NOT interchangeable with Group 9 or 9-B. Verify measurements on these models carefully.
Important: Always confirm your battery's dimensions, terminal configuration, and specifications before purchase to ensure proper fit.
Extend the Life of Your Battery
Keeping your battery charged between uses with a quality maintainer is essential for maximizing its lifespan. Save 10% on a NOCO Genius 1 Charger and Maintainer when bundled with battery using the option above.
Yuasa AGM Battery Design Features
