Performance Tools 18650 Lithium Ion Batteries
High capacity replacement batteries for ATAK brand (and many other) rechargeable flashlights.
No memory effect - recharge up to 1200 times whether fully or partially drained.
Built-in circuit protection to ensure proper venting, prevent overcharge or discharge.
Capacity: 2600mAh; Voltage: 3.7V; Battery Size: 2.62 x .72 (69.2mm x 18.3mm).