Well you will need hyperion balance leads if thats what you intest on doing ? but hyperions leads are rare or not cheap, what i would do is buy one of these
Then just buy the cheap JST-XH balance leads from 2s to 6s depending on how many you want to charge at one time and pick your magnets or battery holders, for 4 or more batteries at one time you want the long leads.
This thread might help if you have not seen it.
Balance charging
https://budgetlightforum.com/t/-/3118
hobby chargers: ive got some pictuers in there of some handy battery holders