STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance 11.62 lb
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STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance 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 for Harley Softail FLS, FLST (1991-2017)
Upgrade your Harley Softail FLS or FLST (1991-2017) with this STX20L-BS replacement battery built to meet or exceed OEM specifications. This maintenance-free, sealed unit provides consistent starting power, superior vibration resistance, and a direct replacement fit for hassle-free installation. If you’re seeking a dependable, high-performance battery that offers long-lasting performance for your Softail, the STX20L-BS is designed for the job.
Key Specifications
- Compatible Models: Harley Softail FLS, FLST (1991-2017)
- Model Number: STX20L-BS
- Brand: SigmasTek
- Voltage: 12 Volts
- Capacity: 18 Ah
- Terminal Type: Nut & Bolt
- Dimensions: 6.85L x 3.43W x 6.11H (inches)
- Construction: Sealed design to prevent leaks and spills
- Maintenance: Maintenance-free technology
- Design Features: Superior vibration resistance for demanding riding conditions
- Fit: Direct replacement for hassle-free installation
Benefits
This replacement battery offers enhanced durability and long life through its sealed, maintenance-free architecture and robust internal construction. Built for motorcycles, the battery’s superior vibration resistance protects internal components from the rigors of road use, extending service life and ensuring consistent starting power even after long periods of storage or in adverse weather. Its sealed construction makes it safe and leak-resistant during installation and use.
As a high-performance battery, the STX20L-BS delivers reliable cranking amps and stable electrical output for lights, ignition systems, and accessories. While it’s tailor-made for Harley Softail models, the battery’s resilient design is also well-suited for other high-vibration applications such as emergency power supplies, small UPS systems, and portable tools that demand short bursts of high current. The direct replacement fit and maintenance-free operation simplify installation and ownership, so you spend more time riding and less time maintaining power systems.
Ready to replace your Softail’s aging battery? Purchase this STX20L-BS replacement battery now to enjoy improved starting performance and the peace of mind that comes with a long-lasting, high-performance battery. Add to cart to secure reliable power for your Harley today.
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
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