Balancing hardware to charge my DIY 13s6p 18650 LiOn from 54.6v Smart Charger?
Did you read my answer to your question that you posted 3 days ago?

What you need is a battery manager, or BMS. This is the current standard way to handle your problem. There may be other jankeyer solutions, such as charging your pack 6s at a time using an RC balance charger, but I wouldn't recommend them if you don't know exactly what you're doing.

Here's some examples of battery managers that I found with a quick google search.

https://vruzend.com/product/48v-13s-battery-management-system-bms/

https://bmsbattery.com/bmspcm/713-10s-13s-30a-50a-lipo-battery-bms-system-bms-pcm.html

https://www.aliexpress.com/item/48V-30A-13S-BMS-used-for-lithium-ion-battery-assembly/1250293246.html

http://www.batterysupports.com/48v-546v-13s-30a-13x-36v-lithium-ion-lipolymer-battery-bms-pcb-p-271.html

Picture in case the links die:


A battery manager is powered from the pack and will actively balance the cells. All you have to worry about is charging the pack to the correct voltage.