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SigmasTek  |  SKU: BW-19341

Harley-Davidson FXST/FLST Series 1200CC Compatible Replacement Battery (1984-1990)

Sale price $71.39 USD Regular price $90.76
Shipping calculated at checkout.

➤ Maintenance-free AGM design eliminates the need for acid refills

➤ Spillproof and leakproof for safe, hassle-free use

➤ U.L. recognized and CE certified for reliable quality

➤ Superior starting power with deep cycle capacity for consistent performance

➤ Resistant to extreme freeze, heat, and vibration for durability


📦🚀 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.
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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

Harley-Davidson 1200CC FXST/FLST Series, 1984-1990 Replacement Battery

Built to fit the Harley-Davidson 1200CC FXST/FLST Series (1984-1990), this AGM maintenance-free replacement battery provides dependable compatibility, strong starting performance, and lasting reliability for classic Harley models. Eliminate the mess and maintenance of flooded batteries—this factory-fresh unit is spillproof, leakproof, and ready to install for immediate, worry-free power.

Key Specifications

  • Compatible Model: Harley-Davidson 1200CC FXST/FLST Series, 1984-1990
  • Brand: SigmasTek (replacement for Harley-Davidson)
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Terminal Type: Nut & Bolt
  • Design: Absorbed Glass Mat (AGM) Maintenance-Free
  • Spillproof and Leakproof Design
  • Valve Regulated Vent System
  • Certifications: U.L. Recognized and CE Certified
  • Resistance: Extreme Freeze, Heat and Vibration Resistance
  • Performance: Superior Starting Power and Deep Cycle Capacity
  • Condition: Brand New, Factory Fresh
  • Warranty: 6 Month Warranty

Benefits

This high-performance battery is engineered for longevity and dependable operation. The AGM maintenance-free construction delivers a spillproof solution that reduces maintenance and increases safety—perfect for riders who prefer a reliable, hassle-free power source. With superior starting power and excellent deep-cycle capability, this replacement battery ensures quick, confident starts and sustained support for lights and accessories.

Durability features include extreme resistance to freeze, heat, and vibration, which helps preserve battery life through varied climates and road conditions. As a long-lasting battery option, it’s ideal for classic motorcycle restoration projects, daily riders, and enthusiasts who want dependable power without constant attention. The valve regulated vent system, along with U.L. recognition and CE certification, reinforces the robust safety and manufacturing standards of this unit.

Beyond motorcycle starting, AGM replacement batteries are versatile: they work well in emergency backup systems, compact UPS setups, and portable tool applications where reliable short bursts of high current are needed. This makes the unit a practical choice for customers seeking a dependable, multi-purpose 12V, 18Ah power source.

Take action now—order your Harley-Davidson 1200CC FXST/FLST Series, 1984-1990 replacement battery and experience the performance of a high-performance, long-lasting battery. Fast shipping and a 6 month warranty give you the confidence to install and ride immediately.


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