When my packs go bad I will simply wire in an XT60 plug. As far as the exposed wire goes, once it is 30 feet away from me I will no longer be able to see it so the aesthetics are less important for me.
Right now I use charge cable I got in 2018 from Carolina Dronz. I use a LiHV capable charger I have had around for some time from Hobby King. QuadKore. 300A @20 amps on each of the 4 ports. I use it to charge almost all my various batteries from 2S transmitter LiFE packs to 6S 5,000 packs for electric planes and helis.