Motobatt Battery MB9UHD Sealed Factory‑Activated Replaces: 12N7‑3B, 12N7‑4A, 12N7‑4B, 12N7D‑3B, 12N9‑3A, 12N9‑3A‑1, 12N9‑3B, 12N9‑4B‑1, YB7‑A, YB7L‑B, YB9‑B, YB9A‑A, YB9L‑A2, YB9L‑B

OVERVIEW

The Motobatt MB9UHD is a sealed AGM battery engineered to deliver consistent starting power and stable voltage for decades of classic and modern powersports machines. Built with advanced lead-acid Absorbent Glass Mat construction, this factory-activated unit provides dependable ignition performance without routine maintenance or fluid checks. Designed as a direct drop-in replacement, it fits a wide range of vintage British twins, retro Italian scooters, Japanese classics, and select ATVs with precise OEM-style mounting.

ENGINEERING & PERFORMANCE

This sealed lead-acid battery utilizes proprietary Absorbent Glass Mat chemistry to maintain strong cold cranking performance even in harsh temperature swings. The reinforced internal plate structure and rugged chassis absorb trail vibrations while eliminating electrolyte spills or gassing during aggressive riding. As a fully factory-activated unit, it plugs directly into existing electrical systems without requiring additional charging, ensuring immediate reliability from day one.

KEY FEATURES

• 140 Cold Cranking Amps (CCA) for rapid engine turnover
• 11 Ah capacity with AGM chemistry
• Compact case dimensions: 5.35” x 2.99” x 5.24”
• QuadFlex multi-terminal design with four adaptable connection points
• Completely sealed, factory-activated construction eliminates water refills
• Enhanced vibration resistance for off-road and street use
• Maintenance-free operation suitable for long-term storage
• Cross-reference compatibility with major OEM Yuasa and NPP part numbers

TECHNICAL SPECIFICATIONS

• Brand: Motobatt
• Part Number: MB9U / MB9UHD
• Component Type: Battery
• Chemistry / Material: AGM (Sealed Lead-Acid)
• Voltage: 12V
• Cold Cranking Amps: 140
• Amp-Hour Rating: 11 Ah
• Dimensions: 5.35” x 2.99” x 5.24” (136mm x 76mm x 155mm)
• Terminal Type: QuadFlex (4 adaptive posts)

FITMENT

• • Honda TRX125 FourTrax (1985–1986)
• • Yamaha SR500 (1978–1981)
• • Kawasaki H1 Series (1969–1975)
• • Harley-Davidson Sportster Electric Start (1970–1978)
• • Piaggio (VESPA) PX Series (All compatible years)
• • Royal Enfield Kick Start Models (1995–1999)
• • BSA 650 / 750 12V (All Years)

WHY RIDERS CHOOSE THIS

Riders choose the Motobatt MB9UHD because its sealed AGM chemistry maintains steady cranking amperage over time, unlike traditional flooded cells that sulfates or loses capacity. The completely maintenance-free build and reinforced casing withstand road shock, engine heat, and prolonged storage without requiring electrolyte top-offs or external chargers. Integrated QuadFlex terminals accommodate custom or period-correct cable routing, making installation straightforward across vintage restorations and modern upgrades. Whether powering a daily commuter or an enduro rig through cold starts, this battery delivers predictable electrical distribution and instant spark reliability.