I've got the REC ABMS on my liveaboard sailboat.
Yesterday (according to the logs) I had the current reading from my shunt go a little haywire. It has been reading between -50A and -25A when in fact with sunny weather and being plugged into shore power the actual draw has likely been between -15A and +50A. Pack voltage has been between 13.2v and 14.2V and otherwise the battery health and monitoring of the BMS have been accurate.
I played with it this morning, disconnected the negative to the main bus from the shunt and it then read +50A give or take. I downloaded the 2.9.0 firmware and attempted to install it thinking it may fix the issue. It threw an error which is another something to deal with and reset. After a couple of tries with the same result - could not identify hw and sw of the BMS and resetting, the issue with the shunt reading seems to have resolved.
I don't trust problems that fix themselves...leaves me wondering if it will crap out at a less convenient time (say in the middle of an ocean crossing). Any thoughts on what has happened and how to ensure it doesn't occur again?