Gridfinity stackable batterystorage (A27 12V)

Gridfinity stackable batterystorage (A27 12V) 1x1 gridfinity box for 16x A27 12V batteries. boxes are stackable to reduce space. I am creating these to store all my the types of batteries i use arround the house for my smart home.I just orded 50 of these batteries and i could not find a good storage solution that is stackable. Changes to gridfinity.My own solution was giving problems with stacking. Gridfinity to the rescue Created on request.