Motobatt Battery MBTX4U Sealed Factory‑Activated Replaces: YB4L‑A, YB4L‑B, YT4L‑BS, YTX4L‑BS

OVERVIEW

The Motobatt MBTX4U is a sealed, factory-activated AGM battery engineered to deliver consistent 12-volt starting power and stable ignition reliability for small-displacement motorcycles, mini-bikes, and scooters. Constructed with Absorbent Glass Mat chemistry and a rigid polymer enclosure, it operates as a direct dimensionally identical replacement for legacy flooded starter units. This maintenance-free power source is built specifically for off-road and urban light-transport platforms that require dependable electrical distribution under demanding riding conditions.

ENGINEERING & PERFORMANCE

Dense glass mat separators and electrolyte fixation technology allow the MBTX4U to maintain strong current output across wide temperature ranges while preventing voltage sag during EFI module cycling. The fully sealed design protects internal plates from acid corrosion and internal shorts triggered by high-frequency vibration or track impacts. Its compact form factor mounts directly into existing battery trays without bracket modifications, while the patented QuadFlex terminal layout handles complex wire harness routing for aftermarket relays, LED lighting, and accessory power draws.

KEY FEATURES

• Sealed AGM (Absorbent Glass Mat) chemistry for leak-proof operation
• Factory-activated configuration requires no initial charging or fluid top-offs
• 70 Cold Cranking Amps (CCA) and 4.7 amp-hour rated capacity
• QuadFlex multi-position terminal architecture for versatile cable routing
• Vibration-dampening separator matrix engineered for impact resistance
• Direct physical replacement for YTX4L-BS, YT4L-BS, YB4L-A, and YB4L-B
• Maintenance-free design eliminates gassing and early sulfation cycles

TECHNICAL SPECIFICATIONS

• Brand: MotoBatt
• Part Name: MBTX4U
• Component Type: AGM Battery
• Material: Sealed Polymer Housing / Glass Mat Separators
• Ssupported Years: Multiple model years across light displacement platforms
• Compatible Trims: Mini-motocross, Pit Bikes, 50cc-150cc Scooters, Small-Frame ATVs

FITMENT

• AEON Cobra/CX-Sport 50 (All Years)
• AEON Cobra/CX-Sport 90 (All Years)
• AEON Cobra/CX-Sport 100 (All Years)
• Aprilia Mojito (2004–2005)
• Aprilia RS250 (2000–2004)
• Aprilia Scarabeo 50 (2000–2003)
• Aprilia SR50 (2000–2001)
• Bombardier DS50, Quest (2002–2006)
• Bombardier DS90, DS90F, Quest (2002–2006)
• CAGIVA City, Lucky, Explorer (1994–1997)
• CAN-AM City 50, Lucky Explorer (1994)
• Derbi All Models (All Years)
• Gilera Runner (-1997)
• Gilera Sioux E-Starter (All Years)
• Honda CT70 (1991–1994)
• Honda NN50MD Gyro (1984)
• Honda NQ50 Spree (1984–1985)
• Kawasaki KL600-A KLR (1984)
• KTM EXC Racing (2003–2009)
• MotoBatt QuadFlex AEON (All Years)
• Panda Motor Sports Cub (1996–1999)
• PIAGGIO Free (All Years)
• PIAGGIO NRG 50 (All Years)
• PIAGGIO Quartz, Sacto, Sfera 50/80 (All Years)
• PIAGGIO Skipper 125/150 (All Years)
• Polis Predator, Sportsman, Outlaw (2003–2009)
• Polaris Scrambler (2003)
• Puch Lido SL50, Lido Vario (All Years)
• Suzuki DR250S (1990–1992)
• Suzuki SP200 (1986–1988)
• Vespa Ape 50 FL (1993)
• Vespa Zip Series (All Years)
• Yamaha CE50 River Jog (1986–1987)
• Yamaha SH50 Riva Razz (1987–2001)
• Yamaha TTR125E, LE Electric Start (2003–2007)

WHY RIDERS CHOOSE THIS

Riders choose the MBTX4U because its 70-CCA output and 4.7 Ah capacity reliably outperform aging 32–45 CCA flooded units, delivering consistent ignition after extended dry storage or in freezing workshop conditions. The QuadFlex terminal system removes installation friction by accommodating diverse wire harnesses, relay taps, and accessory draws without chassis grinding or post modification. Locked inside vibration-resistant glass mats, the sealed AGM construction stops acid degradation and eliminates the routine fluid checks that routinely cause premature failure on dirt bikes and mini-scooters. Precise OEM geometry paired with stable electrical delivery makes this battery a predictable foundation for EFI modules, digital instrument clusters, and trail-running machines.