The SureFire B12 Rechargeable Battery offers a reliable power solution for your SureFire XSC MicroCompact WeaponLight series. Crafted with a lithium polymer composition this battery delivers a steady 3.7 volts and 200mAh capacity ensuring up to 30 minutes of illumination from your 350-lumen XSC. The user-friendly quick-detach design allows for swift battery swaps without detaching your XSC from the pistol. Monitor the charge status effortlessly with the intuitive pushbutton fuel gauge featuring green yellow and red LED indicators for clear battery life assessment. Ideal for those seeking dependable performance in a compact form.