Lithium-ion rechargeable battery No recharge memory effect Includes spare/replacement battery The 560-BATT is a spare/replacement Li-ion battery for the Nightstick Xtreme Lumens (XL) model Tactical Flashlights. Just like all Li-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.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }