My understanding is that lithium iron phosphate batteries are less volatile (less prone to fires) than lithium ion batteries. Due to the lower fire risk, many permitting jurisdictions also allow them to be inside structures with minimal spacing restrictions. We are considering Franklin batteries for our property.
In particular, I like his recommendation at the end when he says "I’m gonna go out on a limb here and be specific about my favorites. Enphase is best for small systems. FranklinWH is best for fast installations and whole home backup. SolarEdge has the most efficient system, and can install the most battery capacity in the smallest space. And Tesla is currently the least expensive and has a well-known brand name."
