Gdetrailer - to TechWriter's point, I'm having a hard time following the statistics from your experience. Can you shed further light?
I did read the attached link from the OP, good background info on LFPs.
But I agree that the 99% claim sounds like it's not backed up by real data. Regardless, if the LFP failure rate is small (1%??) it may not matter to the real world user if the root cause of the failure was the BMS or cells. Would be nice to see some real failure rate data on LARGE sample sizes but I suspect manufacturers guard that pretty closely.
It sounds like this thread has scared at least one away from a turnkey solution, that's up to every individual's personal critical thinking, but with BB 10yr warranty I think there are more concerns and potential issues going with build-your-own and wouldn't recommend that without some real understanding on the users part above and beyond forum gossip.
