Streamlight 66321 Rechargeable Lithium Ion Battery for MacroStream USB

Powerful, rechargeable power for your MacroStream USB flashlight

The Streamlight 66321 Lithium Ion Battery is designed to keep your MacroStream USB ready when you need it most. With a compact, lightweight form and a robust build, this battery supports extended use without the cost and waste of disposables. It delivers steady performance, so you can focus on your task, whether you’re on the job site, in the field, or exploring the outdoors.

Key specifications translate into practical benefits in real-world scenarios. The 800 mAh lithium-ion cell includes an on-board safety circuit, adding a layer of protection during charging and operation. The battery provides up to 4 hours of continuous high-mode operation, and an LED indicator light keeps you informed about battery level and charging status. When it’s time to recharge, you can expect a full charge in about 4 hours and up to 500 recharge cycles from this single battery, making it a long-lasting, cost-conscious choice for reliable lighting.

Core benefits at a glance

• Rechargeable lithium ion battery for Streamlight MacroStream USB flashlight
• Charges in 4 hours and can be recharged up to 500 times for long-term use
• 800 mAh cell with on-board safety circuit for reliable operation
• Provides up to 4 hours of continuous use on high mode
• LED indicator displays battery level and charging status for easy monitoring
• Compact, lightweight design built to withstand everyday wear and travel

In practical terms, this battery is well-suited for professionals who depend on steady illumination during extended shifts, as well as outdoor enthusiasts who tackle late-evening tasks or remote adventures. The combination of a durable housing, efficient recharge capability, and clear status indicators helps you plan your lighting needs with confidence. The ability to run on high mode for several hours can be a real advantage during demanding tasks, while the long cycle life reduces the need for frequent replacements and waste.

How to get the most from your 66321 battery

• Charge fully in about 4 hours using the supplied charging option before extended use
• Keep an eye on the LED indicator to time your next recharge
• Store and transport the battery in a cool, dry location to extend life
• Pair with MacroStream USB for consistent performance and quick topping up

Choosing the Streamlight 66321 means opting for a rechargeable power source that aligns with active lifestyles and professional routines. It offers a practical balance of capacity, safety, and durability, designed to help you stay prepared without overpromising results. If durable, reusable lighting power matters to you, this battery is worth considering as part of your Streamlight setup.