18650 Battery Box - Set of 2 This is a battery box for 18650 lithium-ion batteries. Set of 2. Size: Length 76mm, Width 21mm, Height 20mm A 69mm long battery (the blue battery in the photo) will fit, but that's about the limit. The red battery in the photo is 67mm. The wires are attached to the terminals by direct crimping. Please check the photos. Batteries are not included, only the battery box. I have only checked the continuity between the terminals and the wires with a tester, but I have not tested it with batteries inserted. I haven't checked it with flat-top batteries as I don't have any. Please purchase if you are okay with the above.