Features and Benefits:. Rechargeable up to 1000 times. Rechargeability saves user money on battery replacement costs. Green effort - 1 rechargeable battery to dispose of compared to hundreds of disposable alkaline batteries. Can be used in 5 Streamlight models of flashlights. Nickel Cadmium rechargeable battery stick. For use with Streamlight Stinger Stinger HP Stinger XT Stinger XT HP and PolyStinger flashlights.