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SigmasTek  |  SKU: BW-14478

Long Way LW-3FM12J High Capacity Replacement Battery 4.08 lb

9% off
Sale price $30.99 USD Regular price $33.99
Shipping calculated at checkout.
Compatible with Long Way LW-3FM12J model for seamless replacement
Absorbent Glass Mat (AGM) technology ensures high performance and durability
Maintenance-free and spill-proof design for safe, hassle-free use
U.L. Recognized and CE Certified for quality and safety assurance
Brand new, factory fresh with a 1-year warranty for reliable peace of mind
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Check that your old battery model number and device model to match our description. This makes sure they work together.


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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

🔹 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.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

6 Volts | 12 Ah

Terminal Type

F1

Long Way LW-3FM12J Replacement Battery - Compatible with LW-3FM12J

Upgrade your device with the Long Way LW-3FM12J replacement battery designed for dependable compatibility, strong performance, and proven reliability. This high-performance battery is built to meet or exceed the OEM SLA specifications for the LW-3FM12J model, giving you a maintenance-free, long-lasting battery option for your equipment. Ideal for users who need consistent, spill-proof power, the LW-3FM12J replacement battery combines Absorbent Glass Mat (AGM) technology and factory-fresh construction to deliver stable performance in critical applications.

Key Specifications

  • Model: Long Way LW-3FM12J
  • 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

The Long Way LW-3FM12J replacement battery offers exceptional durability and a long service life thanks to AGM construction and robust manufacturing standards. As a high-performance battery, it delivers consistent discharge and recharge cycles, making it perfect for frequent-use environments. The maintenance-free, spill-proof design eliminates the need for topping up electrolyte, reduces maintenance time, and improves safety in portable and stationary setups.

Expect high reliability in demanding scenarios — this long-lasting battery is suitable for UPS systems, emergency power backups, alarm systems, medical devices, and a variety of power tools and portable equipment. The UL recognition and CE certification confirm compliance with safety and quality standards, while the factory-fresh condition ensures you receive peak performance from day one. Whether you need a replacement battery for routine maintenance or to restore full capability to critical systems, the LW-3FM12J offers dependable, predictable power.

Ready to replace your old battery? Choose the Long Way LW-3FM12J replacement battery for a high-performance battery option that is dependable, long-lasting, and fully compatible with your LW-3FM12J device. Order now to secure reliable power and a 1 year warranty.

Technical Specifications

Voltage6 Volts
Amp Hours12 Ah
Terminal TypeF1
Length (in.)5.95
Width (in.)2.0
Height (in.)3.7
Weight (lb.)4.08

Product Highlights

  • Brand Replacement : Long Way LW-3FM12J
  • Manufacturer: SigmasTek
  • Product Type: SLA Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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