Gridfinity compatible:
(I found magnets unnecessary due to the weight of the batteries since I only take out one at a time. I left them in the design since they print without supports, unlike the original gridfinity magnet+M3 combo design)
Holds 4 of the Sony NP-FW50 batteries used in Sony Alpha cameras:
Batteries are slanted forwards for easy removal/return when placed on a shelf or in a deep drawer. I tested with both original Sony batteries and aftermarket ones by Ravpower (from amazon) - the originals have a nice and loose fit and are very easy to remove with one hand. The aftermarket ones fit a bit tighter)
This was printed with the following configuration:
The author marked this model as their own original creation.