Absolutely correct.
At the dawn of my career with BT each flooded lead acid battery was given a "conditioning cycle" every 2 years.
First the battery was fully charged and cell voltages & sg's taken (temperature corrected).
Then it was discharged at the 10 hour rate, with load current checked and adjusted every 15 minutes as well as voltages & sg's taken.
When the first cell reached 1.85 volts, a cadmium electrode was used. Cadmium is electro-negative to the negative plate, so charge distributuon on both plates can be assessed. Finally when the first cell reached 1.75 volts the discharge test was terminated and the battery immediately put on recharge and the capacity calculated.
Including fully recharging, the process used to take around 30 hours and generated me and a colleague loads of overtime and a day off in lieu. A 30 hour straight shift wouldnt be allowed these days.
Batteries typically lasted 25 years, and were scrapped when capacity dropped to 80% of badged capacity.
From 1980 flooded lead acids were replaced with VRSLA's which were permanently on float, never needed topping up and usually lasted 6 years before failing in service. Whole life costs were an order of magnitude less though.