The thickness is about 1.8 mm.
The diameter is about 5 mm.
Note: This product is a spacer for 18650 battery contact pads.
For the flashlight, because 18650 is substantially flat, directly on the flashlight may not come into contact or poor contact situation. The spacer can be effectively combined with
It solves the problem.
Tips: This product is not a battery, please know this as a buyer!