Airsoft Case for 18650 Batteries (3S 11,1 V - PEQ Box - Picatinny Rail)

thingiverse

This case houses three 18650 batteries and can easily be mounted on a Picatinny rail. It's designed to resemble a laser box or PEQ box. The three 18650 cells are wired in series, so the voltage adds up to the same voltage as an 11.1-volt lipo. You won't need to solder anything except your main connector to connect the battery pack to your airsoft gun. The batteries are held in place by M3 screws from both sides and connected by wires screwed onto the M3 screws with nuts, as shown in the pictures. There are two versions of this case: one has no visible wires, which are routed through the Picatinny rail, and the other version has holes for cables on the back. When measuring the screws, I measured them with the head, not just thread length. Most screws don't need to be a perfect length; you can use longer or shorter screws for most parts. For this project, you'll need the following screws: * Four M3 screws with 30mm length * Three M3 screws with 15mm length * Five M3 screws with 10mm length * Nine M3 nuts * Two M3 washers More specific instructions will follow, but the case itself is definitely ready to print and the build is self-explanatory. Don't forget to check out my other designs!