Well that just sucks! I took the charger off the battery in the 66 and tested it. BAD!!! Only loaded to 150 cca. I tested the battery in the Swinger. BAD!!!! It failed load test at 250 cca. (and it was a green cap repop) Mo Fo now I need 2 batteries. No draw on either systems and inside all winter.
Battery on the 2 amp trickle charger for 3 days. 13.8 volts failed load test at 187 cranking amps. Just about enough power to turn it over a few times. Tested it again and it failed at 89 cca. Stick a fork in it. It's done!