I was thinking that this might be a great choice for DIY powerwalls. Right now the favorite seems to be LFP. But even as they have gotten close to the price o

I was thinking that this might be a great choice for DIY powerwalls. Right now the favorite seems to be LFP. But even as they have gotten close to the price of lead acid, they're still expensive if you want a decent size battery to be an emergency backup for grid power. But a quick search suggests that demand for these is too low to offset the potentially less expensive construction, so they are really overpriced for the capacity.