Nightstick Rechargeable Lithium-Ion Battery for USB-578 Dual-Light Tactical Flashlights

The 578-BATT is a spare/replacement Lithium-ion battery for select Nightstick USB Dual-Light 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.