You can all agree with everything that anyone who never used this charger as to say. I have been using two of them on a daily basis for the past 4 weeks to recharge my 20S20P, 74V 30Ah battery in my E-Moped and the balance tabs barely become warm. My battery can be separated into four 5S packs fast so I recharge two 5S and then the other two 5S.
Even doing it that way is faster than using two Hyperion 1420i to recharge all at once or two Cellpro 10S to recharge all at once because they always go into a balance charge mode that tries to equalize 30Ah cells with each other at less than 1 amp
Once the charge is done, I checked the voltage of each cell with my Fluke and they all are below 4.205V so no over charging going on here. I did this for the first 5 charges just to find out if the chargers are consistant and they are. That is with the chargers adjusted to charge at 4.2V per cell. That is adjustable to a lower voltage if needed.
So hypothesize all you want, I know what I got and I know it works well

Just wanted to share.