I’m finally setting up a DC coupled solar install on my garage this spring and my plan was to use a 2-3kwh bank of lead acid batteries that I have available until I give up on driving my LEAF, then part it out and replace the lead batteries with the LMO batteries. Your statement makes me reconsider using those modules in my garage, but I’ve been parking the car in the garage for the last 6 years and I only intend to charge them to 80ish%. For new stationary batteries LFP makes perfect sense, but how much more concerned should I be about a LMO pack that’s been well behaved for 11 years and an estimated 1500 cycles? LMO has a higher thermal runaway threshold than LMC, but not as high as LFP. Putting them in a metal container for various reasons would probably be worth while.