Streamlight SL-B50 Rechargeable Battery Pack, 3.6V 4900mAh

The Streamlight SL-B50 is a protected Li‑Ion rechargeable battery pack designed for use with select Streamlight flashlights. It features a built‑in USB‑C charging port and visible charge‑status indicators to show charging progress. An integrated safety circuit protects against overcharge and over‑discharge. Its compact dimensions and light weight make it convenient for carry and field use with compatible ProTac series lights.

Key Specifications

• The nominal voltage is 3.6 Volts.
• The rated capacity is 4,900 mAh.
• The typical charge time is 6 hours using the USB‑C input.
• The battery includes a built‑in USB‑C port for onboard charging.
• The cell is rechargeable at least 500 times.
• Charge status is indicated by red for charging and green for charged.
• An integrated safety circuit protects from overcharge and over‑discharge.
• The length measures 3.26 inches (8.28 cm).
• The weight is approximately 3.0 ounces (85 g).
• Backed by a 2‑year limited warranty.

Compact, safe, and serviceable, the SL‑B50 provides a straightforward rechargeable power solution for compatible Streamlight ProTac 2.0 lights. Its USB‑C charging, clear status indicators, and protective circuitry make it a practical choice for users who prioritize reliable on‑board power and easy recharging in everyday, work, or field environments.