January 5, 20242 yr I had to replace my 5kW Sunsynk inverter after a severe lightning strike. Both my Sunsynk batteries, while charging and working perfectly, aren't communicating with the inverter, so it looks like their CAN bus interface was damaged as well. Before I drag 100kgs of batteries out of their cabinet, is there an easy way of testing them for CAN comms ? When I originally installed the system, Ellies techs had to come out and work on the batteries firmware, so there must be some software and a hardware interface out there. Can anyone assist please ?
January 5, 20242 yr Just measure the voltage on the canbus wires coming from the bms... you should see voltages that fluctuate 0-4V
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