We have Mastervolt chargers and they do have have an equalization mode. By the discussion in the manual you can dicern that the equalization mode is not intended to be used very often. Below is an excerpt from from the manual:
"An equalizing charge can be necessary after very deep discharges and/or inadequate charges. This has to be carried out according to the specifications of the manufacturer of the batteries. During equalizing the batteries are brought into the gas state and is it possible that the permitted load voltages are exceeded. Therefore appropriate measures must be taken, e.g. disconnect all loads from the battery and ventilate the room. For these reasons use of the equalizing mode should only be executed by trained technical engineers. The equalizing mode can only be started when the Chargemaster is in operation and in Float. This means that the connection compartment of the Chargemaster must be opened while connected to the mains and the batteries. Take adequate measures for protection against short circuits and electrical shocks. To start the equalize mode: move DIP switch 4 to the ON position and back to the OFF position."
