Streamlight SL-B50 Rechargeable Battery Pack 1pk

The Streamlight SL-B50 Rechargeable Battery Pack is a protected lithium-ion power cell engineered for Streamlight tactical flashlights and headlamps. Rated at 3.6V and 4900mAh, this single-pack battery delivers consistent runtime across extended patrol operations, training sessions, and field deployments where reliable illumination is non-negotiable.

The SL-B50 integrates an integrated USB-C charging port and multi-stage charge indicator lights—red during charging, green when fully charged—enabling quick status checks in the field. Recharging takes approximately 6 hours via standard USB-C input. The battery supports at least 500 full recharge cycles, minimizing long-term replacement costs during sustained equipment rotation. Built-in protection circuitry guards against over-discharge, over-charge, and short-circuit conditions, extending service life and preventing premature failure under demanding use.

This battery pack is the official power source for the Streamlight ProTac 2.0 line, including the ProTac 2.0 Headlamp and ProTac 2.0 Rail Mount systems. Operators relying on modular weapon-mounted or hands-free illumination benefit from standardized charging infrastructure across platforms. The compact form factor (3.9 × 1 × 6.55 inches) ensures minimal storage footprint in duty bags, vehicle kits, or backpack cargo compartments without sacrificing capacity.

Law enforcement, military personnel, and serious tactical enthusiasts operating multi-light systems will appreciate the SL-B50's reliability and standardization across compatible Streamlight devices, eliminating the logistics burden of mixed battery types during high-operational-tempo deployments.