Battery holder 4xAA Square

Just another battery support, but square. It is based on 4 AA batteries.
For connections I used the leftover crimp connectors (https://www.pololu.com/product/1931) .
To stay glued connections, you can push softly the metal part into the plastic with the hot soldering iron (the welder mustn't touch plastic) to soften it a little. That and black tape should be well attached.

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Otro soporte para batería, pero en cuadrado. Es para 4 pila