The final state of the battery was reach quickly as expected. It's taken off charging for storage. I might play with it once I have the mods ready for the high power adaptor.
Battery state:
13.4V while connected to charger, draw from mains 1.2W, feed to battery 40mA average
13.4V stand alone
6.57 m-Ohm internal resistance
62% wear life
395 CCA, Spec: 430 CCA, type 075
Next I am preparing my 19 year old factory battery for summer use. It was charged with the low power adaptor until no progress, and stored for a while. Now charging using the high power adaptor. Bubbling can be heard. I have open access to the cells and don't mind losing water. Level on most cells are high from many years of dropping in Bat-aid tablets. I stopped using the tablets a few years back after they becoming less effective.
Battery state:
13.9V while connected to charger, draw from mains 20W, feed to battery 1150mA fluctuating - should settle to 1000mA
12.73.1V stand alone
12.75 m-Ohm internal resistance
17% wear life
203 CCA, Spec: 640 CCA, type 096