Streamlight 66321 Lithium-ion Battery 3.7V 80mah

Product Description

The STREAMLIGHT 66321 is a rechargeable lithium-ion replacement battery designed for use with the Streamlight Macrostream USB Flashlight. Rated at 3.7 volts with a capacity of 80 milliamp-hours (mAh), this cylindrical cell features a flat terminal style and accepts a full charge in approximately 240 minutes. At 0.07 pounds, it is a compact, lightweight component. Field technicians and service professionals who rely on the Macrostream USB as a primary or backup work light will want a verified OEM-compatible replacement cell on hand to maintain uninterrupted tool availability.

This battery is intended for direct replacement in the Streamlight Macrostream USB Flashlight. It is suited for trade professionals who carry the Macrostream USB in HVAC, electrical, plumbing, or general service environments where a dependable, rechargeable light source is part of everyday kit. Stocking a spare battery eliminates downtime caused by a depleted cell during a job.

Key Features

• Rechargeable lithium-ion chemistry for repeated charge cycles
• 3.7V nominal voltage matched to Macrostream USB specifications
• 80 mAh capacity in a compact cylindrical form factor
• Flat terminal style for correct seating in the flashlight body
• Full charge achieved in approximately 240 minutes
• Lightweight at 0.07 pounds for minimal added carry weight

Compatibility

Designed as a direct OEM-style replacement battery for the Streamlight Macrostream USB Flashlight.

Installation Notes

Battery replacement should be performed by the end user following the flashlight manufacturer's instructions. Power down and fully discharge or turn off the flashlight before opening the battery compartment. Avoid contact between the flat terminal and conductive materials during handling. Dispose of spent lithium-ion cells in accordance with local regulations and do not expose to heat or flame.