Rolls and Surrette has a fine PDF manual to download. It applies to Trojan 101% and the Space Cadet academy in Corona and to LTH and Johnson Controls 5% antimony batteries. Deviate from that charging protocol at your battery's risk. Try reconciling a correct charging protocol with "smart" converter's profiles.
The idiot who proclaimed bulk charging as being a stage hoped and prayed it would be taken as a charger controlled event. Two stage, three stage, twenty ninth stage. A charger takes x time to arrive at voltage limit. Factor 2 is how much time is spent at voltage limit before defaulting to float. I am one of the few who achieve instantaneous voltage limit because my chargers have capacity to do so.
It charges
Then hums
Then sepentines up and down
Then zots a higher voltage
Then sends Morse Code to the battery plates
Then falls to float
Meanwhile back at the ranch
The battery didn't get charged
No matter
The user fell into a catatonic stupor induced by stobing LEDs.
The newest battery charger Armani Italian Suit
And they cannot get enough of it
Salesmen don't like me for some reason