Here is the vendors reply:
How many pack do you have?
BMS is 60 amp continuous and 120 amp peak if you have 1 pack the current is not enough.
Check your motor and see that is the Amp require
The BMS is 14S Smart BMS
Thanks
So looks like PingEye3 is correct. Also judging by the vendors
own video its clear that current flows through this cheap BMS.
SO what to do? I can certainly give things a try by removing the BMS and attaching running 4 gauge to my controller but I'm a little concerned about running without a BMS and/or a smart charger. I could change out the BMS also. Any suggestions? I really looking to get 2-3 rounds of golf per charge.