Need help choosing a UPS

[bp2008]

@bp2008 , am I mistaken and is my fear unfounded because the lithium iron phosphate batteries have been around long enough to have some data that proves it's as safe and dependable as the SLA battery tech?

I'm not a font of scientific knowledge on the subject, but my understanding is they are very safe relative to other lithium batteries (e.g. like those in phones). We have 60 kWh of the things in the basement (EG4 LifePower4) so they'd better be safe.