[arber333]

OK now we re talking. I made the RC filter, and connected the charger off O/P as failsafe. But now i got constant glitches while driving. Once every 2 seconds, regular. I tried to disconnect the charger off line and sure enough - no glitches. I then went on and layed a new cable trough the cabin so the charger off line is totaly independent from comm lines. I guess it was 12V that was buzzing the comms while driving. Now that i have done this i had no glitches in two rides to work and it is the first time i trust BMS to work independently.
I will transition now to top balancing with shunts 3R3 5W and PMV30 mosfet instead of DNBT bipolar transistor. It will drain 1A insted of only 0.6A that DNBT allowed. I guess there was not enough drive current from PIC port to open bipolar fully. That mosfet is tested on the batteries and can be a direct replacement on the board. In theory it could drain 2A, but that would require 2R 7W resistor and the heat is already a lot.

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