Hi again Red, can I make a suggestion.
It is commonplace for any brand of battery charger to reach a “full charged “ during the charge cycle and then goes into float.
Try putting the charger on every evening and leave it on the batteries over night, and then remove ( turn off ) the charger during the day.
If you have the patience to do this for a week, then see if your batteries hold a better capacity.
Again, this is just a suggestion, as this type of charging can recondition old/unused batteries.
Might save you some money.