Kobalt 80v Battery Connector

thingiverse

A connector designed specifically for testing or wiring up Kobalt 80 volt batteries to a DC/DC converter is what's needed here. Print out the cover plate and the mate plate, locate some metal contacts that can stick out of the narrow slots on the mate plate, solder in any available wire leads and then glue the two parts together. For extra durability, small screws can be used to secure the cover plate to the mate plate. Once I've finished making the connector, I always clearly write a + and a - sign on the cover plate with permanent marker so that it's impossible to insert the connector into the battery backwards by mistake. Warning: Kobalt 80v batteries produce high voltages and can supply high currents. Improper use can lead to dangerous situations, shock hazards, fires or worse. Do not use this connector if you're unfamiliar with high voltages or lithium ion batteries. Post-Printing Terminals I used metal positive terminals from old Ryobi Ni-Cd batteries for my contacts. They fit perfectly into the Kobalt 80 battery due to their exact dimensions (thickness and length). Since I can usually find old, dead Ryobi Ni-Cd batteries for free, I just disassemble two batteries, remove the positive terminal by drilling out the spot welds, and properly recycle the remaining Ni-Cd cells.