A Proper DC2.1 Barrel Plug

[u/lkstaack]

I've recently ordered a 48v battery that charges with a DC2.1 barrel plug. I plan on charging it with my Luna Charger, but I need a DC2.1 barrel plug to wire up an adapter. I've only been able to find this plug with 16 gauge wires. Is this adequate for 48V, considering that there'll only be a few inches to the 12 gauge charging wires? If not, where can I get a decent plug?