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SigmasTek  |  SKU: BW-17296

STX20L-BS High Performance Replacement Battery for Yamaha YFM40FB Big Bear (2000-2012) 11.62 lb

21% off
Sale price $75.99 USD Regular price $95.99
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Direct OEM replacement for Yamaha YFM40FB Big Bear (2000-2012)
Guaranteed perfect fit for easy, hassle-free installation
Meets or exceeds OEM specs for reliable, long-lasting power
High Cold Cranking Amps (CCA) for strong starts in all weather
Maintenance-free design built to withstand tough ATV conditions
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

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Volts & Amps

12 Volts | 18 Ah

Terminal Type

Nut & Bolt

STX20L-BS Battery — Replacement for Yamaha YFM40FB Big Bear (2000-2012)

Upgrade the starting power of your Yamaha YFM40FB Big Bear (2000-2012) with the STX20L-BS replacement battery. Designed as a direct OEM replacement, this high-performance battery delivers consistent, dependable starts and is engineered to meet or exceed original equipment specifications. Whether you ride for work or recreation, this battery provides the reliability and long-lasting battery life needed for off-road conditions and seasonal use.

Key Specifications

  • Model: STX20L-BS
  • Compatible Models: Yamaha YFM40FB Big Bear (2000-2012)
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Terminal Type: Nut & Bolt
  • Brand: SigmasTek
  • Direct OEM replacement
  • Guaranteed fit for hassle-free installation
  • Meets or exceeds OEM specifications
  • High CCA for powerful starting in all weather conditions
  • Maintenance-free design

Benefits

The STX20L-BS long-lasting battery offers rugged construction and design features that enhance durability and service life in the rough conditions Big Bear riders encounter. Built to deliver reliable cranking and high cold-cranking ability, it provides quick, consistent starts even in cold weather or after periods of storage. Its maintenance-free nature reduces routine service and helps minimize ownership hassle—perfect for owners who prefer to focus on riding rather than upkeep.

As a high-performance battery, it supports heavy use and consistently supplies the power needed to start the engine, run lights, and support small accessories. Typical applications include primary starting for all-terrain vehicles, standby power for emergency starts, and use in workshops or garages where a dependable battery is needed to test or maintain machines. The exact-fit and OEM-grade construction mean installation is straightforward and dependable.

Whether you are replacing an aged battery or equipping a rebuilt machine, the STX20L-BS replacement battery delivers trustworthy performance and extended life, making it a dependable choice for your Yamaha Big Bear.

Ready to improve starting reliability? Add the STX20L-BS high-performance replacement battery to your cart now and ensure your Big Bear starts strong for every ride.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Cold Cranking Amps (CCA)270
Length (in.)6.89
Width (in.)3.43
Height (in.)6.14
Weight (lb.)11.61

Product Highlights

  • Manufacturer: SigmasTek
  • Product Type: Powersport Batteries
  • Warranty: 6 Months
  • Bulk Orders: sales@batteryweb.com

Connections & Interface

  • Polarity: "'-/+"

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