Yuasa YB7L-B Yumicron 12-Volt Battery

Bring reliable starting strength and steady electrical output back to your classic street bike, vintage scooter, or lightweight trail machine with the Yuasa YB7L-B Yumicron 12-Volt Battery. Purpose-built to upgrade the performance of mid-sized engines, the Yumicron series features extra lead plates packed into every cell to deliver up to 30 percent more cranking power than standard conventional batteries. Whether you are kicking over a vintage restoration or prepping your daily commuter for the morning ride, this high-output power cell ensures fast, crisp engine starts every single time. Engineered with a high-impact polypropylene case and heavy-duty internal separators, the YB7L-B is built to withstand severe engine vibration, frame buzz, and harsh road shock. Its specialized radial grid architecture maximizes electrical conductivity while minimizing internal resistance for rapid energy transfer. Featuring translucent casing walls that make routine visual fluid level checks quick and effortless, this heavy-duty 12V battery delivers the ultimate combination of classic machine compatibility, rugged casing durability, and proven Yuasa dependability.

• Special thin separators allow two extra plates per cell to be installed, for a 30 percent improvement in cranking performance
• Engineered to protect against corrosion, withstand vibration, and deliver high cranking power

Restore dependable starting performance and consistent electrical output to compatible classic motorcycles, vintage scooters, and lightweight trail bikes with the Yuasa Battery YB7L-B Yumicron 12-Volt Battery. Designed for mid-sized powersports engines, this conventional battery uses additional lead plates in each cell to provide up to 30 percent more cranking power than standard designs. The increased starting capability helps deliver quick, confident engine starts for vintage restorations, daily commuters, and seasonal riding applications.
Built with a high-impact polypropylene case and heavy-duty internal separators, the Yuasa YB7L-B is designed to withstand engine vibration, frame movement, and road shock. Its radial grid construction promotes efficient electrical conductivity while helping reduce internal resistance for fast energy transfer. The translucent case allows convenient visual inspection of electrolyte levels, making routine maintenance checks easier. This combination of durable construction, high cranking output, and service-friendly design reflects Yuasa Battery’s proven reputation for powersports reliability.
The YB7L-B Yumicron battery is a suitable replacement for select Yamaha applications, including the DT125, AT2, AT2M, and SR500, when matched to the vehicle’s original battery specifications. Verify fitment, terminal configuration, and application requirements before installation. As a conventional battery, it requires proper preparation, charging, and maintenance according to the manufacturer’s instructions. The Yuasa Battery part number YB7L-B identifies this battery’s application and construction within the Yumicron powersports line.

Features:

• Extra lead plates: Special thin separators allow two additional plates per cell, providing up to 30 percent more cranking power than standard conventional batteries.

• Vibration-resistant construction: Heavy-duty internal separators and a durable polypropylene case help protect against engine vibration and road shock.

• Efficient electrical delivery: Radial grid architecture promotes conductivity and supports rapid energy transfer for dependable starting performance.

• Corrosion protection: Engineered internal components help resist corrosion and support consistent battery service life.

• Translucent case: Semi-transparent casing walls make routine electrolyte level checks quick and convenient.

• Vehicle compatibility: Designed for select powersports applications, including certain Yamaha DT125, AT2, AT2M, and SR500 models.

Fitment:
Harley Davidson SS125 Base 1976
Harley Davidson SS125 Base 1977
Harley Davidson SS175 Base 1976
Harley Davidson SS175 Base 1977
Harley Davidson SS250 Base 1975
Harley Davidson SS250 Base 1976
Harley Davidson SS250 Base 1977
Harley Davidson SX125 Base 1974
Harley Davidson SX125 Base 1975
Harley Davidson SX175 Base 1974
Harley Davidson SX175 Base 1975
Harley Davidson SX250 Base 1975
Harley Davidson SX250 Base 1976
Harley Davidson SX250 Base 1977
Harley Davidson SX250 Base 1978
Harley Davidson SXT125 Base 1976
Harley Davidson SXT125 Base 1977
Harley Davidson TX125 Base 1973
Harley Davidson Z90 Base 1973
Harley Davidson Z90 Base 1974
Harley Davidson Z90 Base 1975
Yamaha At2 Base 1972
Yamaha At2M Base 1972
Yamaha Dt125 Base 1974
Yamaha Dt125 Base 1975
Yamaha Dt125 Base 1976
Yamaha Dt125 Base 1978
Yamaha Dt125 Base 1979
Yamaha Dt125 Base 1980
Yamaha Dt125 Base 1981
Yamaha L5TA Base 1970
Yamaha SR500 Base 1978
Yamaha SR500 Base 1979
Yamaha SR500 Base 1980
Yamaha SR500 Base 1981