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SigmasTek  |  SKU: BW-14479

Long Way LW-3FM12D High Capacity Replacement Battery

Sale price $16.99 USD Regular price $24.60
Shipping calculated at checkout.

➤ Compatible replacement for Long Way LW-3FM12D model

➤ Uses advanced Absorbent Glass Mat (AGM) technology

➤ Maintenance-free with spill-proof, sealed construction

➤ U.L. Recognized and CE Certified for safety and quality

➤ Comes brand new with a 1-year manufacturer warranty


📦🚀 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

6 Volts | 12 Ah

Terminal Type

F1

Long Way LW-3FM12D Replacement Battery - Compatible with LW-3FM12D

Restore reliable power with the Long Way LW-3FM12D replacement battery engineered for full compatibility and strong, consistent performance. This replacement battery meets or exceeds OEM SLA specifications for the LW-3FM12D model and delivers the dependable, maintenance-free operation professionals expect. If you need a high-performance battery that is also a long-lasting battery option, the LW-3FM12D delivers safe, steady energy for critical devices.

Key Specifications

  • Model: Long Way LW-3FM12D
  • Replacement Brand: SigmasTek (replacement for Long Way)
  • Voltage: 6 Volts
  • Capacity: 12 Ah
  • Terminal Type: F1
  • Technology: Absorbent Glass Mat (AGM)
  • Design: Maintenance-Free, Spill Proof Construction
  • Certifications: U.L. Recognized, CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year
  • OEM Compatibility: Meets or exceeds OEM SLA specifications

Benefits

Built to withstand frequent use and deliver consistent output, the LW-3FM12D replacement battery emphasizes durability and longevity. Its AGM construction ensures superior internal recombination and reduced self-discharge, translating into reliable standby and cycle performance. As a high-performance battery, it supports stable voltage delivery under load, protecting sensitive electronics and enhancing the lifespan of connected systems.

The maintenance-free, spill-proof design makes this long-lasting battery particularly well-suited for UPS systems, emergency backup power, alarm and security systems, mobility devices, and portable power tools. Certifications from U.L. and CE validate the battery’s safety and manufacturing quality, while the brand new, factory-fresh condition provides immediate readiness out of the box. With a one-year warranty and guaranteed compatibility, this replacement battery is an effective, low-risk solution for restoring full functionality to your LW-3FM12D device.

Don’t wait until power issues cause downtime. Purchase the Long Way LW-3FM12D replacement battery today for a dependable, high-performance battery that’s built to last and fully compatible with your LW-3FM12D equipment.



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