Not sure if you've done it before but you should post a picture of all your RC's. You must have a fleet!
Limitless still
K12S
Tenacity DB
PL Pro MT
Kaiju
4-tec
Mini-DB
DBXLE
Maybe this thing, maybe that other thing...
Not as many as you!
Why stop there? Build a trailer for the second 6S pack ???
Cost too much money to charge all the batteries..