If ya add
data.raw["accumulator"]["accumulator"].fast_replaceable_group = "accumulator"
data.raw["solar-panel"]["solar-panel"].fast_replaceable_group = "solar-panel"
to the data.lua
then add (i did it after max_health)
fast_replaceable_group = "accumulator"
fast_replaceable_group = "solar-panel"
to each of your items this will enable fast replace tested it before i came here.