What they say about Equalization - and many other things - is very badly written and misleading! My comments in (red brackets).
TROJAN ON EQUALIZATION:
Equalizing is an overcharge performed on flooded lead batteries
after they have been fully charged.
(Should be OPEN flooded not sealed flooded.)
It reverses the buildup of negative chemical effects like stratification
, a condition where acid concentration is greater at the bottom of the battery than at the top. Equalizing also helps to remove sulfate crystals that might have built up on the plates.
If left unchecked, this condition, called sulfation, will reduce the overall capacity of the battery.
(Charging at the right absorption voltages stops stratification.)
(Discharging is a chemical reaction that always causes Lead Sulfate crystals. Leaving in a PSOC for too long hardens the crystals and equalization won't help)
Many experts recommend that batteries be equalized periodically,
ranging anywhere from once a month to once or twice per year. However, Trojan only recommends equalizing when low or wide ranging specific gravity (>0.030) are detected after fully charging
(Experts usually recommend equalising when batteries can't or haven't been FULLY charged before the Lead Crystals harden - usually after 2-3 weeks.)
Verify the battery(s) are flooded type.
Remove all loads from the batteries.
Connect battery charger.
Set charger for the equalizing voltage (See Table 2 in the Charging
section). If your charger doesn’t have an equalization mode, you can unplug the charger and re-plug it back in. This also will conduct the equalization charge.
Start charging batteries.
(Batteries should be FULLY charged before equalization is started.)
Batteries will begin gassing and bubbling vigorously.
Take specific gravity readings every hour.
Equalization is complete when specific gravity values no longer rise
during the gassing stage.
(Not the safest way - a timed period is better if given by your battery manufacturer)