Couldn't find any 2 x 18650 battery holders around but found a cigar case which gave me an idea how to quickly make simple battery holder
So here it is — cigar tube, one wine cork, spring from broken AA battery case, piece of twisted pair cable and cat's food can and sure some tape
Might look quite crude but hey, it was made in about 15 minutes including heating of soldering iron and it works great!
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