My 675 amp hrs weight 525#, for a 50% DoD of 337.5 amp hrs used
My avg nightly use is 20% aka 135 amp hrs
A set of 30 Edison's cells providing a total of 336 amp hrs,
80% equal 268 amp hrs, 50% equal 168 amp hrs
Might work, but weighs 540# and has total less energy if need arises
And costs a lot more
The only advantage is length of life, does the cost equal this for even the hard core of grid camper
I think a fixed off grid home is the place for these
I would like to see the price of Lth come down so I could reduce the weight and increase the life