Dummy AAA

Dummy AAA, to be used together with Li-ion in the holders where 2 or 3 standard AAA are needed.
Li-ion has higher voltage so if that is the limitation of the device (!), insert diode inside this thing, to create 0.7V voltage drop. It contains the empty tube with 3mm diameter, to place the diode. Otherwise, just put the wire through it. See pictures.
Print vertically.