Double Battery Case

This is a simple case for 2 Samsung Galaxy S4 Batteries. the 2mm thick Plate goes between the batteries. As shown in the photos, I have soldered the connections in Parallel to give 3.7v and 5,200mAh for a project.

Update:
I have finally completed my project with this as the last part. there is just enough room inside the box for the cables to be knotted on the inside of the cable path to give it more durability when cables are pulled from the outside. as you can see i also used quite a bit of hot glue to ensure no metal to metal connections are made at the top of the batteries.

again, i used a drill and crafting knives to cut out the cable path.

i also had to make some adjustments on the tabs for the lid to close correctly. the openings on the bottom printed a bit narrower than designed.