Can you describe in more detail what happened when it "cut out"? Did the converter and battery just sit there with no current flowing all of a sudden (on what meter?), but the 120v to the converter was still on ok?
Was there still voltage at the converter's DC terminals but no amps flowing?
Do you get a read-out from the BMS anywhere that showed something like a code that means a particular thing? What did you do after to get it all going again? The converter didn't fry anything or it would not work again.
The converter is "current limited" but there is no actual over-current protection that shuts it down AFAIK. Are you suspecting a "surge" of current because of the low R of the LFP? You can fry the input thermistor with a surge but that makes smoke and flames (BTDT ! exciting! :( )
With the 90 amps from alternator, were you able to see what voltage the BMS was seeing at the time? Was it lower than the converter's voltage?
--Trying to figure this out as an interesting mystery, plus maybe have more info to pass to Errin if you haven't already. Tomorrow is a working day so they might be able to look into it.
