Remixed of the Customizable & stackable beer crate for all types of batteries from CAD-Guy, who remixed from Jarda K 66. Thanks y'all!
Modified the height and added a divider right in the middle, could probably hold other camera manufacturer batteries.
To make stackable, download Bierkiste-Batterien-Boden.stl from CAD-Guy's files and glue on.
The author remixed this model.