Ever realize how much adjustment is required when you replace a battery?

Went to do some welding the other day and discovered my auto darkening welding mask was not working. Obvious dead battery. Replace the battery then I had to readjust all the settings to get the right darkness and time of darkening and the level of brightness required to get it to darken. Lots of potential welding flash. I haven't replaced its battery for years and it took some time to figure out how again.