Surefire B12 Lithium Battery 3.7 Volts 200 mAh Fits XSC Series Lights Rechargeable Black

Grab a Backup Battery for Your XSC Weapon Light
The Surefire B12 battery goes with the XSC Weapon Light and XSC series of lights. This is a rechargeable 3.7 volts Li-Polymer battery. Make sure to pick up a backup battery so you always have one charged up