Mighty Max Battery YTX9-BS replacement battery for PTX9BS 12V 8AH AGM, 135 CCA, vibration-resistant

Mighty Max Battery YTX9-BS is a sealed 12V 8AH replacement battery designed to power PTX9BS Predator 8750-watt generators with reliable cold-start performance.

Whether you're replacing an aging generator battery or keeping a spare on hand, this YTX9-BS unit delivers a compact, maintenance-free power source. It is a sealed lead-acid (SLA/AGM) battery rated at 135 CCA, built for vibration resistance and wide temperature operation. The listing includes the battery and mounting screws only—no harnesses or additional accessories are provided.

Will this battery fit my Predator PTX9BS 8750-watt generator?

Yes. The YTX9-BS matches the size and terminal layout used by PTX9BS generator models, providing a drop-in replacement for most installations. Confirm your current battery's dimensions and terminal orientation before purchasing.

• Dimensions: 5.90" x 3.38" x 4.25" (L x W x H) to match OEM footprints
• Polarity: positive terminal on left, negative on right when terminals face you
• Form factor: sealed AGM/SLA, suitable for cramped battery compartments
• Includes mounting screws; no wire harness or extra brackets included

How reliable is the battery for starts and standby use?

The battery is engineered for high discharge rates and good cold-cranking capacity, making it suitable for repeated starts and intermittent use. Its AGM construction keeps electrolyte sealed, lowering maintenance and reducing the chance of spills during transport or installation.

• Rated 135 Cold Cranking Amps (CCA) for dependable engine starts
• 8AH capacity balances compact size with usable cranking energy
• SLA/AGM design resists leaks and tolerates mounting in any orientation
• Rechargeable and recoverable from deep discharge with proper charging

Can this battery handle vibration, temperature changes, and heavy use?

Yes. The sealed AGM build and robust internal construction improve shock and vibration resistance, while the chemistry supports operation across a wide temperature range. That makes this battery a practical choice for generators used in garages, job sites, RVs, or seasonal backup applications.

• Shock and vibration resistant for generator and mobile use
• Wide operating temperature tolerance for hot and cold environments
• Long service life compared to conventional flooded cells
• Performs well after deep discharge recovery cycles with suitable chargers

What is included and what warranty applies?

The package contains the Mighty Max Battery YTX9-BS and the mounting screws needed to secure it; wiring, harnesses, or mounting trays are not included. Mighty Max Battery backs this unit with a full one-year warranty against manufacturing defects.

• Included: battery and screws only—no cables or extra mounting hardware
• One-year limited warranty from Mighty Max Battery for peace of mind
• Installation requires basic hand tools and proper terminal connections
• Follow generator manufacturer guidelines for battery replacement

Who is this for: The Mighty Max Battery YTX9-BS is aimed at DIYers, technicians, and generator owners who need a compact, maintenance-free 12V replacement for Predator PTX9BS 8750W generators. It’s well suited for users who prioritize a sealed, vibration-resistant battery that fits standard generator battery compartments and provides reliable cranking power in varied climates.