Back in August, our 3-month old Smart Lithium 12.8/330ah battery BMS failed - on a sunny afternoon at anchor a couple of hours after the battery was at 100%. There was no warning, no known stimulus (like lightning, engine start, firmware update, etc.) It simply disappeared from Bluetooth and opened both charge and load switches (BatteryProtect units). After 5 weeks, the internal BMS board was replaced under warranty, and the replacement has been 100%. [As an aside, the failure occurred only a couple miles from the Victron facility in Rockland. Maine - but we had no way of knowing this or contacting Victron at the time].
My question is. what can I do to protect vital systems from a similar failure in a situation where keeping power to critical systems (chartplotter, instruments, etc.) might be essential? I don't want to simply power them around the load disconnect, but I don't want my boat going black underway at night!
