Keeppower 3.7v Battery- Button top
Keeppower 18650 3.7v Button-top battery.
Cell is 3120mAh with a 15A continuous discharge. (High Drain for Neopixel Sabers)
-Double Deal: Order 2 cells and save! choose qty in the product options.
Why purchase 2 batteries? Well, so you can keep using your saber while the other cell charges of course!