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SigmasTek  |  SKU: BW-18043

STX20L-BS High Performance Replacement Battery For Harley-Davidson FLSTN Softail Deluxe 2005-2014 11.62 lb

14% off
Sale price $75.99 USD Regular price $87.99
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Exact fit for Harley-Davidson FLSTN Softail Deluxe (2005-2014)
Meets or exceeds OEM specifications for dependable performance
Maintenance-free sealed AGM technology for hassle-free use
Spill-proof and leak-proof design ensures safe handling
High cold cranking amps (CCA) for reliable starts in any weather
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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.

Delivery and Shipping

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🔹 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 — Compatible with Harley-Davidson FLSTN Softail Deluxe (2005-2014)

Upgrade your Harley-Davidson FLSTN Softail Deluxe (2005-2014) with this STX20L-BS high-performance battery designed to meet or exceed OEM expectations. This sealed AGM replacement battery provides dependable starting power, maintenance-free operation, and a perfect fit for hassle-free installation. Built for riders who want a long-lasting battery with reliable cold-weather performance, this unit keeps your motorcycle ready for the road.

Key Specifications

  • Compatible Model: Harley-Davidson FLSTN Softail Deluxe (2005-2014)
  • Model: STX20L-BS
  • Brand: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Terminal Type: Nut & Bolt
  • Battery Type: Sealed Absorbed Glass Mat (AGM) — Maintenance-Free
  • Design Features: Spill-proof and leak-proof
  • Performance: High CCA for reliable starting power (high cold cranking ability stated)
  • Construction: Durable construction for long-lasting performance
  • Fit: Exact fit and perfect fit guarantee for FLSTN Softail Deluxe

Benefits

  • Durability: Sealed AGM design and robust construction protect the battery from vibration and road exposure so it can withstand the demands of cruising and long rides.
  • Long Life: Maintenance-free AGM technology reduces the risk of acid leakage and corrosion, providing a long-lasting battery solution for your Harley.
  • High Performance: Designed with high cold cranking capability to ensure confident starts in varying weather conditions — a true high-performance battery for riders.
  • Maintenance-Free Convenience: No need to add water or manage acid — sealed, spill-proof operation makes installation and ownership simple and safe.
  • Versatile Use: While specifically engineered for the FLSTN Softail Deluxe, this replacement battery’s durability and performance also make it useful for emergency power, backup UPS modules, and portable tools when a reliable 12V supply is needed.
  • Peace of Mind Fit: Exact fit guarantee ensures a hassle-free swap with OEM mounting and terminal layout for straightforward installation.

Don’t wait until a dead battery strands you. Purchase the STX20L-BS replacement battery for your Harley-Davidson FLSTN Softail Deluxe today and enjoy the benefits of a reliable, long-lasting battery built for the road. Add to cart now for fast shipping and dependable performance.

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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