Surefire Battery 3.7v Lith Poly Xsc

The SureFire Battery 3.7V Lithium Polymer XSC is a quick-detach, rechargeable power cell engineered specifically for the SureFire XSC micro-compact weapon light series. This compact lithium-polymer battery delivers the focused energy needed to operate the 350-lumen XSC for up to 30 minutes of continuous runtime, making it the standard choice for operators equipping duty pistols with SureFire's most compact integrated lighting solution.

The B12 battery measures 4.25 inches in length with a 0.75-inch diameter and weighs just 0.06 lbs, maintaining the XSC's extremely low-profile footprint on the slide. The built-in fuel gauge switch provides instant charge status visibility through LED indicators—green for full charge, yellow for intermediate levels, and red for critical depletion. This design eliminates guesswork during range sessions or duty rotation, allowing operators to make informed decisions about recharge timing without disassembly.

The quick-detach mechanism enables battery swaps without removing the XSC from the host pistol, a critical advantage during extended training or when rotating duty weapons. This modular approach suits patrol officers, tactical operators, and civilian defensive carriers who prioritize keeping their sighting system mounted while managing power supply. Lithium-polymer chemistry delivers stable voltage output across the battery's service life, maintaining consistent lumen output rather than the gradual dimming characteristic of traditional batteries.

The SureFire B12 represents the standard platform battery for modern micro-compact weapon lights, offering the reliability standard among agencies and serious shooters who depend on integrated pistol-mounted illumination for duty, training, and defensive readiness.