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Brightway Group  |  SKU: BW-10975

Sure-Lites 39-21 Emergency Light High Performance Replacement Battery By Bright Way 1.5 lb

24% off
Sale price $21.99 USD Regular price $28.99
Shipping calculated at checkout.
Compatible with Sure-Lites 39-21 Emergency Light for seamless replacement
Provides reliable 6V power to keep emergency lights operational
4.5Ah capacity ensures long-lasting performance during outages
Features F1 terminal for easy and secure installation
Engineered for high standards to deliver dependable emergency lighting
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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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Volts & Amps

6 Volts | 5 AH

Terminal Type

F1

Bright Way Replacement Battery for the Sure-Lites 39-21 Emergency Light

Designed specifically for the Sure-Lites 39-21 Emergency Light, this Bright Way replacement battery delivers reliable compatibility, steady performance, and proven reliability when power matters most. As a high-performance battery engineered for emergency lighting, it provides dependable energy storage and quick, straightforward installation so your fixture remains ready during outages. If you need a long-lasting battery that fits the Sure-Lites 39-21 model, this Bright Way unit offers consistent output and peace of mind for critical lighting applications.

Key Specifications

  • Brand: Bright Way
  • Designed for: Sure-Lites 39-21 Emergency Light
  • Voltage: 6V
  • Capacity: 4.5Ah
  • Terminal: F1

Benefits

This Bright Way replacement battery is built for durability and dependable performance. As a high-performance battery, it provides consistent discharge and recharge behavior, ensuring your Sure-Lites 39-21 emergency light remains operational during critical periods. The 6V 4.5Ah chemistry is optimized for long life in standby and cyclic applications, making it a long-lasting battery choice for emergency lighting, exit signs, and other safety fixtures. The F1 terminal design simplifies installation and reduces downtime, so maintenance teams can replace batteries quickly and reliably.

Beyond emergency fixtures, this unit performs well in related applications that require steady, reserve power—such as small uninterruptible power supplies (UPS), emergency power modules, and equipment that demands compact, reliable battery backup. The rugged construction and consistent output help reduce the risk of premature replacement, minimizing maintenance cycles and cost over time. Whether used in new installations or for maintenance replacement, this Bright Way battery is a dependable component for safety-critical systems.

Featuring compatibility with the Sure-Lites 39-21 model and manufactured by Bright Way, this replacement battery balances cost, reliability, and performance. If you’re looking for a high-performance battery solution that offers the peace of mind of long-lasting operation and easy installation, this Bright Way 6V 4.5Ah unit is an excellent choice.

Ready to restore reliable emergency lighting? Add this Bright Way replacement battery for the Sure-Lites 39-21 Emergency Light to your cart now and ensure your system is prepared when it matters most.

Technical Specifications

Voltage6 Volts
Amp Hours5 AH
Terminal TypeF1
Length (in.)2.76
Width (in.)1.85
Height (in.)3.98
Weight (lb.)1.5

Product Highlights

  • Brand Replacement : Sure-Lites 39-21 Emergency
  • Manufacturer: Brightway Group
  • Product Type: Emergency Power
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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