Surefire B13 Lithium Battery for XR Series Weapon Light

Specifically engineered to fuel the SureFire XR WeaponLight series, the SureFire B13 is a quick-detach, rechargeable lithium-polymer battery that can be swapped fast without removing the XSC from the host pistol. The compact B13 powers the 800-lumen XR1 for up to 40 minutes or the XR2 light + laser for up to 35 minutes. Its charge status can be checked quickly by pressing the push-button fuel gauge switch located on the side of the battery and observing the green, yellow and red LED indicators.