Most items with limited charges cannot be recharged.
-- What item barrows item? Thus far, only Chariot, Empress and Emperor rings can be recharged. All others can only be discarded or sold once the enchantments run out. However, the exception to this is single-charge items. These regain their charge after the alotted time. Ex: The Treat Staff II only has a single "Warp" charge, but after it has been used it will always regain that charge after the 120 HOUR (real world) time limit is up.