The constant voltage methodology is not a magic moment.
It is an extrapolation to a maximum point for reference. The closer you get to this point the faster the battery CAN charge. Think of it this way (might be better yet)...
Set point charging. No stages...
How many minutes or hours does it take for the battery to arrive at voltage set point?
You would be shocked at the number of setups where endpoint takes hours. Not especially because of a tiny charger - it's because of the charger amperage - battery bank capacity differential. Replacing 220 ampere hours takes muscle.
When increased to -440 amp hours how big should a charger be? Got earmuffs?
40-90's...
A single battery may accept only 10 amperes at the 90% point
Times 4 is 40 amperes. Times 8 is 80 amperes.
90% point of my 2-volt cells is over 100 amperes.
So the issue is not cut and dried. Constant voltage charging does not establish a set rule. It establishes a reference point for calculation.
A point of orientation to define "fastest"
Like using a walking speed of 5 mph versus 2 to arrive at a destination.
100 meters is trivial
1 mile is substantial
10 miles it becomes enormous.
I aimed the constant voltage scenario at serious boondockers who probable have very large battery banks. Couple that with length of stay. Throw in a pinch of
"I can't stand it anymore!" tolerance for endless generator noise, and...
There you have it!
