Power up the most demanding flashlight systems with this Streamlight SL-B26 Lithium Ion USB Battery. SL-B26 protected lithium-ion rechargeable battery pack with built in micro-USB charge port Charges in 5 hours Integrated safety circuit protects battery pack from overcharge/discharge 2.75 inch 1.7 oz. Compatible with: PolyTac X USB, PolyTac 90 X USB, ProTac 90 X USB, ProTac 2L-X USB, ProTac HL-X USB, ProTac HL 5-X USB, Siege X USB, Stinger 2020, Survivor X USB, Vantage 180 X USB, and more
