STX20L-BS Harley-Davidson FLSTF Softail Fat Boy (1991-2014) High-Performance Battery 11.62 lb
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STX20L-BS Harley-Davidson FLSTF Softail Fat Boy (1991-2014) High-Performance Battery is backordered and will ship as soon as it is back in stock.
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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 Replacement Battery for Harley-Davidson FLSTF Softail Fat Boy (1991-2014)
Upgrade your Harley-Davidson FLSTF Softail Fat Boy (1991-2014) with the STX20L-BS replacement battery engineered for reliable starting power, improved performance, and everyday durability. Designed to meet or exceed OEM specifications, this high-performance battery delivers dependable starts in a wide range of riding conditions while offering a maintenance-free, spill-proof build that reduces hassle and increases safety on the road.
Key Specifications
- Model: STX20L-BS
- Compatible Model: Harley-Davidson FLSTF Softail Fat Boy (1991-2014)
- Brand: SigmasTek
- Voltage: 12 Volts
- Capacity: 18 Ah
- Terminal Type: Nut & Bolt
- Design: Maintenance-free, Spill-proof
- Construction: Durable to withstand vibration and extreme temperatures
- Performance Note: High CCA rating for reliable cold-weather starting
- Compliance: Meets or exceeds OEM specifications
Benefits
- Durability: Built to withstand motorcycle vibration, heat, and the rigors of frequent use so you get consistent starts and fewer replacements.
- Long life: Maintenance-free construction and quality components deliver reliable service life, making this a true long-lasting battery option for riders.
- High performance: A high CCA rating improves cold-weather starts and delivers the immediate cranking power needed for heavy-displacement Harley engines.
- Safety and convenience: Spill-proof, leak-proof design and maintenance-free operation eliminate the need for acid refilling and reduce risk during installation and transport.
- OEM-level fit and compatibility: Guaranteed fit for the FLSTF Softail Fat Boy (1991-2014) ensures plug-and-play replacement without modification.
- Versatile applications: While ideal as a motorcycle starting battery, this reliable power source also suits emergency power applications, portable tools, and backup power systems where dependable 12V supply is required.
When you need a dependable, high-performance battery replacement for your Harley, the STX20L-BS is engineered to deliver reliable starts, rugged durability, and hassle-free maintenance. Choose this long-lasting battery to keep your Fat Boy ready to ride—purchase now and enjoy dependable power on every trip.
Technical Specifications
Product Highlights
- Manufacturer: SigmasTek
- Product Type: Powersport Batteries
- Warranty: 6 Months
- Bulk Orders: sales@batteryweb.com
Connections & Interface
- Polarity: "'-/+"
Payment & Security
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