Universal cables DO work, just not with battery boxes for some reason. You need either basic, advanced, elite, or ultimate energy cubes to transfer power from your power source to your power storage with those cables. The universal cables are the only way to transfer power, use copper wiring for nothing but circuits.
Username: BattleDonkey
Age: 19
Why Tekkitopia? Looks like an awesome server, also one of the only good hybrid servers on the website.
Your secret code: 12Bat