Hi there, there is a removable plastic cover that hides the obd2 port, I have removed that permanently (just replace it when the vehicle goes into the dealer). I insert the dongle when I want use LeafSpy, then remove it when finished (I keep both the dongle and cover in the pocket behind the passengers seat).
Once a month I charge the battery to 100% and leave the power connect until the 3 blue flashing pips on the dash board stop flashing. At this point the BMS has balanced all the cells and LeafSpy will show the cells with the lowest voltage and the highest voltage, the disparity between both needs to be minimal, ideally less than 20mv is considered to be good. Wider the disparity is bad as this indicates the possibility of a weak or weakening cell in the pack.
When fully balanced, using LeafSpy I always record the current SOH percentage and the KWh remaining when the pack is fully charged. Also a good time to check the voltage of the 12v battery to ensure is well there.
Charging to 80% is said to be best practice, but I normally charge 6 hours overnight on cheap electricity and mostly end up at 90%, after which I alway use the car the next day, so I don’t really think it is an issue that will affect battery longevity. I never charge to 100% and not us it straight away as this really bad for the battery to be left at full charge of extended periods.
I would top up the battery on level 2 charging any at any time when a convenient opportunity arises although there is little point if the battery charge is above 90% as the charge rate slows dramatically at 95%.
Rapid charging I wouldn’t plug in, unless the charge was below 70% as I understand that is a bad thing to do, but not sure exactly why.
I will put some LeafSpy screen shot up which will help with navigation.