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Replacement Li-ion Battery - TAC-400/500 Series

This rechargeable lithium-ion battery is a spare/replacement battery for select Nightstick Tactical flashlights including the TAC-400, TAC-500, and TAC-550 models. Not for use in Nightstick Xtreme Lumens series of tactical flashlights. Just like all Lithium-ion batteries, this unit has no recharge memory effect meaning it can be charged a little or a lot with no impact on the life of the battery.


  • Lithium-ion rechargeable battery
  • Fits models TAC-400/450/500/550 Nightstick Tactical Flashlights
  • Not for use in Nightstick Xtreme Lumens (XL) model tactical flashlights
  • No Recharge Memory Effect