disconnecting main battery terminals from BMS power board for direct connect to charger is special operation - do not do it when you are tired.
first thing - you MUST wrap Allen key with tape except very end of it.
yes you can remove fuse first but it is risky if your hands shake and you have to connect it back - more risk.
all this is very individual - messy and speedy type of person can easly destroy BMS processing/control board in miliseconds.
Another way I can think of is to masking tape everything around battery terminals on power board .
Last edited by powell; 05-20-19 at 03:01 PM.