In a project I’m working on I may end up needing 4s power. I plan on flying it on the old emax 2215 c pack on 3s, but if that doesn’t cut it, I may need to move to 4s power. However, the old c pack motor (and the esc I’m using) are not 4s rated, but my stock power pack b is technically 4s capable. I can’t seem to find a good amp draw chart for it, but I’m skeptical that my emax 20 amp esc will be able to handle the 4s power and 9x6 propeller... The sites I looked at did recommend an 18 amp esc, so I think that it might be OK... what do you think - have you ever flown the stock old emax power pack b on 4s? I just want to make sure this is ok before I ruin all my gear😂. Thanks!