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SigmasTek  |  SKU: BW-18043

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

Sale price $59.98 USD Regular price $82.13
Shipping calculated at checkout.

➤ 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


📦🚀 FAST SHIPPING: Usually ships same day if ordered before 2 PM EST

⚠️ Quick Reminder

🔹 Please ensure the original battery model number is listed in our product description and that your device model number matches for compatibility.
🔹 We only supply the batteries shown in the images. Device images are provided for reference only.

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Battery Care Guide

Battery Usage and Maintenance Guidelines 🔋

Please read the following instructions carefully before using your new battery. Proper adherence will help ensure optimal performance and extended service life.

1. Cordless Phones, PDAs, and Power Tools (NiMH, NiCd, Lithium-Ion) 📱

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Operate the device until the battery reaches approximately 20% capacity.
  • Avoid premature recharging.
  • Do not allow the battery to fully discharge during the initial cycles.

Post-Conditioning

  • Recharge the battery only when necessary.
  • These batteries are capable of approximately 500 charge cycles:
  • Once daily → ~500 days
    Twice daily → ~250 days
    Note: Even a partial recharge is considered a full cycle.

2. Sealed Lead Acid (SLA) Batteries 💡

  • No conditioning required.
  • Maintain the battery in a fully charged state; avoid complete discharge.
  • Capable of 300–400 charge cycles.
  • Expected service life: 2–3 years, depending on usage conditions.

3. Laptop Batteries (Lithium-Ion) 💻

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Charge fully, then discharge to approximately 20% capacity.
  • Avoid complete discharge, as some devices may not detect a fully drained battery.

Post-Conditioning

  • Minimize frequent plugging and unplugging.
  • Allow the battery to discharge moderately at least once per month to maintain optimal performance.
  • Occasional cycling is recommended to sustain battery health.

Professional Recommendation

Adhering to these guidelines will enhance battery longevity and ensure reliable performance.

For further assistance regarding your battery or order, our customer support team is available to provide guidance.

Delivery and Shipping

Everything You Need to Know About Shipping with BatteryWeb (USA)

We know reliable delivery matters when you need power fast. Here’s how BatteryWeb makes shipping easy across the USA:

🚚 Shipping & Delivery

Most orders ship next business day (some products like sealed lead acid may take a little longer).

Same-day shipping available if you order before 11:59 AM (delivery depends on the carrier).

We ship nationwide using FedEx, UPS, USPS, DHL, and regional ground carriers.

Shipping costs are calculated automatically at checkout based on weight, distance, and carrier.

Transit times shown are estimates only (business days, no weekends/holidays).

🌍 Shipping Restrictions

Lithium batteries cannot be shipped by USPS or air. They must go via FedEx Ground, UPS Ground, or DHL Ground.

PO Box deliveries are only available via USPS.

At this time, we do not ship lithium batteries to Puerto Rico. NiMH, NiCd, and Alkaline can be shipped.

📦 Important Notes

Double-check your shipping address! If an incorrect address is used and the order is returned, re-shipping costs are the buyer’s responsibility.

If a product is temporarily out of stock, we’ll notify you right away with the expected restock date—or issue a refund if you prefer.

💲 Currency & Pricing

All prices are shown in USD.

Orders shipped outside the USA may be subject to local taxes, customs fees, or import duties. These are the buyer’s responsibility.

⚡ At BatteryWeb, we’re committed to getting your batteries delivered quickly, safely, and affordably—so you’ll always have the power you need, when you need it.

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.

🔹 Our products are generic replacement parts and are not affiliated with, endorsed by, or manufactured by the original equipment manufacturers (OEMs).


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.


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