About this 3D model
Summary battery fits well ? make a case to hold this if you want a battery pack, that's what im gunna do. Post-Printing shove 2 pieces of wire in take some 20 gauge solid wire out of the silicon casing use something to help poke it in for a firm fit. like a screw driver or something idk press the wires down into the inside walls with some pliers after bending them.