With wet cells, yes, equalization is recommended.
HOWEVER. With "maintenance is impossible" sealed batteries, you cannot perform an equalization charge because it will boil off electrolyte which you can't top up to replace.
So for you, equalization will only ruin (boil out) your batteries. Unless they are sealed wet cells (as opposed to sealed gel or AGM
batteries) and you can safely unseal them to check and restore the electrolyte.