STX20L-BS High Performance Replacement Battery For Harley-Davidson FX & FL Softail Series 1991-2021 11.62 lb
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STX20L-BS High Performance Replacement Battery For Harley-Davidson FX & FL Softail Series 1991-2021 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 Battery — Replacement for Harley-Davidson FX, FL Softail Series (1991-2021)
Upgrade your Harley-Davidson FX or FL Softail Series (1991-2021) with the STX20L-BS, a precision-engineered replacement battery built to meet or exceed OEM specifications. This maintenance-free, spill-proof battery is crafted to deliver dependable starting power, improved longevity, and a vibration-resistant design tailored to the demands of motorcycle use. For riders seeking a reliable, high-performance battery that integrates seamlessly with their bike’s electrical system, the STX20L-BS is an excellent choice.
Key Specifications
- Compatible Models: Harley-Davidson FX, FL Softail Series (1991-2021)
- Model: STX20L-BS
- Brand: SigmasTek
- Voltage: 12 Volts
- Capacity: 18 Ah
- Terminal Type: Nut & Bolt
- Design Traits: Spill-proof and vibration-resistant
- Operation: Maintenance-free
- Fitment: Direct replacement, meets or exceeds OEM specifications
Benefits
The STX20L-BS is a long-lasting battery solution tailored for motorcycle environments that demand durability and dependable starting performance. Its spill-proof construction and vibration resistance reduce maintenance concerns and help protect the electrical system against the shocks and vibrations common to road use. The maintenance-free operation eliminates the need for electrolyte checks and topping up, so you can focus on riding instead of battery upkeep.
As a high-performance battery, the STX20L-BS provides the reliable cranking power needed for cold starts and heavy accessory loads. Its design ensures consistent performance over repeated cycles, making it suitable not only for starting but also for applications where brief high-current output is necessary. The direct-fit form factor simplifies installation, guaranteeing a seamless swap for the original battery.
Whether you’re a daily rider, a weekend cruiser, or restoring a classic Softail, this replacement battery is engineered to deliver the steady power and longevity you expect from a premium motorcycle battery. Trust in a unit that balances robust construction with easy installation.
Don’t wait to restore peak starting power—purchase the STX20L-BS replacement battery for your Harley-Davidson FX or FL Softail Series today and experience the confidence of a high-performance, long-lasting battery.
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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