Grand 18650:
=====
Height: 3-3/4" including catch cup
Width: 1-11/16"
Depth: 15/16"
ID of catch cup: ~19/32"
Weight: 6.3oz fully loaded
Uses 6ml bottle & 1 AW IMR 18650 Battery
Mini 2.0 18490:
=====
Height: 3-1/8" including catch cup
Width: 1-5/8”
Depth: 7/8”
ID of catch cup: ~35/64"
Weight: 4.9 oz fully loaded
Uses 3ml bottle & 1 AW IMR 18490 Battery
Mini 14500:
=====
Height: 3-1/8" including catch cup
Width: 1-1/2"
Depth: 3/4"
ID of Catch Cup: ~33/64"
Weight: 4.2oz fully loaded
Uses 3ml bottle & 1 AW IMR 14500 Battery
The Mini 2.1 has a larger drip well to accommodate most rba's. Size is the same as the Mini 2.0
=====
Height: 3-3/4" including catch cup
Width: 1-11/16"
Depth: 15/16"
ID of catch cup: ~19/32"
Weight: 6.3oz fully loaded
Uses 6ml bottle & 1 AW IMR 18650 Battery
Mini 2.0 18490:
=====
Height: 3-1/8" including catch cup
Width: 1-5/8”
Depth: 7/8”
ID of catch cup: ~35/64"
Weight: 4.9 oz fully loaded
Uses 3ml bottle & 1 AW IMR 18490 Battery
Mini 14500:
=====
Height: 3-1/8" including catch cup
Width: 1-1/2"
Depth: 3/4"
ID of Catch Cup: ~33/64"
Weight: 4.2oz fully loaded
Uses 3ml bottle & 1 AW IMR 14500 Battery

The Mini 2.1 has a larger drip well to accommodate most rba's. Size is the same as the Mini 2.0