Love it Neil But seriously, Florin, I probably didn't word my last post too well. I wasn't concerned that my system was mission critical, but more that I don't have redundancy like a mission critical system would, and therefore needed to know what would happen and how I would identify if a fault occurred in the BMS. I read your answer as saying that it will (should) fail safe and effectively shut the battery down? But it is an unlikely event that the BMS will fail.
And Smillie, I think there are many potential advantages of new technology. Some see it as an opportunity and are more inclined to try it earlier than others, and others see it as more risky. Each to their own, but for those of us that want to give it a go, I find these threads very interesting and Florin's comments are helping to give me a better perspective. For those of us with caravans, weight is a far more critical issue (as you well know!), and changing to Lithium in my van will save me about 37 kg of weight near the front of the van. Not to be sneezed at.