2S shorty LiPo battery charge connector

The 2S Shorty LiPo battery connector system is based on a 3D-printed clamshell design that securely holds standard bullet connectors with attached wires. All three connections can be easily plugged/unplugged at once, making it a breeze to charge batteries between heats at the track.

I used to use my own charge leads, which I made with these 5mm bullet connectors, these 2mm bullets for the center balance lead, XT60 connectors, a balance lead extension and some heatshrink tubing. Individually handling each connector was tedious and led to me breaking wires after repeated use. Not anymore with this new connector design!

The 3D-printed parts have a top and bottom, and the bullet leads must get pushed through the holes with pliers or a vise. It's a tight by design so that they are held in a tight clearance fit when fully installed.

Putting a large nut on the opposite side of insertion can make it easier to push the bullet connector all the way through.

The top piece gets held in place by two M3 X 10mm countersunk screws with 5.5mm hex nuts.

There is a version of 3D pieces for Protek and for Maclan so far, as each manufacturer uses a slightly different spacing/position on the battery terminals. I printed the Maclan in orange and Protek in black to make them easy to identify.

In terms of printing, the top/bottom pieces can be placed with their flat surfaces down on the built plate, and only the hex nut pockets need supports. I used Hatchbox PETG to help mitigate any warping of the parts during hot summer days at the track.

The ergonomics of charging is so much improved, and I don't feel like I could bend/break the wires any more. The wire length and connector types at the other end is obviously up to you, but this solution has been great so far, with a very satisfying feel when plugging/unplugging. Enjoy and give a heart/rating if you so desire!