This mod is included inside “Realistic Fallout 2.0. - Immersive Edition”. If you have that mod you don’t need this one:
mods.bethesda.net
Simple mod that adds a recipe to the Chem Bench to recharge a fusion core using 150 fusion cells. It can be found under the “Utility” tab,. Requires the Science lvl 1 perk.
Remove any fully charged fusion cores from your inventory before using this option in the chembench, otherwise the function might track that item instead of the used / depleted fusion core. If you want to replenish a specific fusion core I advise storing your other cores elsewhere beforehand.