Mighty Max YT12B-4 Compatible Replacement Battery by SigmasTek 9.01 lb

Replacement for Mighty Max YT12B-4 Motorcycle Battery — Compatible YT12B-4

This compatible replacement battery for the Mighty Max YT12B-4 is engineered to deliver reliable starting power and consistent performance for motorcycles that demand quick, high-rate discharge. As an AGM maintenance-free option, the SigmasTek replacement battery removes the need for acid filling or routine electrolyte checks while providing the dependable energy your ride needs. If you want a high-performance battery that installs easily, resists vibration and temperature extremes, and offers long-term value, the YT12B-4 replacement is an excellent choice.

Key Specifications

• Compatibility: Replacement for Mighty Max YT12B-4
• Battery Type: AGM Maintenance Free (Absorbed Glass Mat Design)
• Voltage: 12 Volts
• Capacity: 10 Ah
• Terminal Type: Nut & Bolt
• Design: Maintenance-Free; Spillproof and Leakproof Design
• Certifications: U.L. Recognized and CE Certified
• Vent System: Valve Regulated Vent System
• Durability: Extreme Freeze, Heat and Vibration Resistance
• Performance: Superior Starting Power and Deep Cycle Capacity
• Condition: Brand New, Factory Fresh
• Warranty: 6 Month Warranty
• Brand: SigmasTek (replacement for Mighty Max)

Benefits

Built around an Absorbed Glass Mat (AGM) design, this replacement battery combines safety and performance in one compact package. The maintenance-free construction and spillproof, leakproof engineering mean you can install and ride with confidence — no acid filling or periodic watering required. The valve-regulated vent system helps maintain internal pressure balance and supports longer service life, while U.L. recognition and CE certification ensure the battery meets rigorous safety standards.

Expect exceptional vibration and temperature resistance for use in motorcycles, where shocks and heat are constant challenges. The high-performance battery chemistry provides superior starting power for cold starts and reliable ignition, while offering deep-cycle capability to support accessories and short bursts of high current. Because the YT12B-4 replacement is factory fresh and professionally tested, you’ll receive consistent quality and dependable performance out of the box.

Typical applications include motorcycle starting systems, sport bikes, dirt bikes, scooters, and other powersports vehicles that require a compact, long-lasting battery with strong cranking ability. The 12V/10Ah rating and nut-and-bolt terminals make it an easy swap for many OEM installations where a YT12B-4 is specified.

Ready to upgrade? Purchase this replacement battery for the Mighty Max YT12B-4 today and enjoy a long-lasting battery solution with reliable starting power and proven durability. Order now to get fast shipping and peace of mind with a 6 month warranty.