Have a spare battery ready to swap in to your SureFire XSC series weaponlight with this Dual-Charge Cradle with B12 Battery kit. The dual-bay charge cradle comes with a spare 200mAh, 3.7V LiPo B12 battery. Plug the cradle into an AC or DC source using the included micro-USB to USB Type-A cord, and you can charge two batteries in three hours. The B12 battery is easily removed without detaching the weaponlight from your pistol, so it's easy to swap in a fully charged battery and continue your mission.