I hope we'll see another evolution of lifepo4 to reduce the weight in the next five years and maybe even the cost.
I did not know that li-ion has a shorter life than lifepo4.
I thought lifepo4 was only 10% larger in mass for the same capacity as lifepo4 but apparently I am very wrong. But this brings up a concern I've had for awhile - what if these cheap lifepo4 cells from China are cutting corners somehow and are not "pure" lifepo4 - somehow introducing a safety risk, especially as they age? Is this possible?
There are claims around here of cheap 18650 lifepo4 cells exploding as people solder them, etc.