STX20L-BS High Performance Replacement Battery for Yamaha YFM400FB Big Bear 4x4 IRS (2007-2012) 11.62 lb
— Ready to ship immediately
Check that your old battery model number and device model to match our description. This makes sure they work together.
We ship your order same day if you buy it before 4 PM EST.
STX20L-BS High Performance Replacement Battery for Yamaha YFM400FB Big Bear 4x4 IRS (2007-2012) is backordered and will ship as soon as it is back in stock.
Let customers speak for us
Send Your Battery Photo
Expert Technician Help
Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR BATTERY IMAGE
Product & Solutions Expert
✉ sales@batteryweb.com
Battery Care Tips
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.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Volts & Amps
12 Volts | 18 Ah
Terminal Type
Nut & Bolt
STX20L-BS Battery — Replacement for Yamaha YFM400FB Big Bear 4x4 IRS (2007-2012)
Give your Yamaha YFM400FB Big Bear 4x4 IRS (2007-2012) the dependable starting power it deserves with the STX20L-BS replacement battery. This long-lasting battery is built to meet or exceed OEM specifications, delivering reliable starts and rugged performance for off-road adventures and utility tasks. Designed to be an exact fit, it ensures effortless installation and consistent electrical performance for your 4x4 IRS Big Bear.
Key Specifications
- Model: STX20L-BS
- Compatible Models: Yamaha YFM400FB Big Bear 4x4 IRS (2007-2012)
- Voltage: 12 Volts
- Capacity: 18 Ah
- Terminal Type: Nut & Bolt
- Brand: SigmasTek
- Exact fit for specified Big Bear model years
- Meets or exceeds OEM specifications
- Sealed, maintenance-free design
- Designed for ATV applications and durability
- Provides superior cold-weather starting power
Benefits
This STX20L-BS high-performance battery delivers the durability and consistent life that owners of Big Bear 4x4 IRS expect. With a sealed and maintenance-free design, it eliminates the need for periodic fluid checks and reduces the chance of leaks—important features when riding in rugged, muddy environments. The battery’s construction is focused on vibration resistance and longevity, helping to ensure reliable starts throughout the riding season and beyond.
Performance advantages include strong cold-cranking ability for dependable starts in low temperatures and stable output for powering lights and accessories. As a replacement battery, it is ideally suited for primary starting duty in ATVs, emergency backup starts, and workshop or field maintenance where dependable power is required. The exact-fit form factor guarantees an easy swap with the OEM battery for minimal downtime.
When long-term reliability and easy ownership matter, the STX20L-BS long-lasting battery is an excellent choice for your Big Bear 4x4 IRS. It combines OEM-grade fitment, sealed convenience, and the robust starting power needed for heavy-duty ATV use.
Take the next step toward worry-free starts—order your STX20L-BS replacement battery today and keep your Big Bear ready for every trail and task.
Technical Specifications
Product Highlights
- Manufacturer: SigmasTek
- Product Type: Powersport Batteries
- Warranty: 6 Months
- Bulk Orders: sales@batteryweb.com
Connections & Interface
- Polarity: "'-/+"
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
