Thanks to Ed G or whoever recommended buying a battery load tester. Bought one off of Amazon for 18.99 and it works great. Tested several loose batterys already.
One quick question:
Do you need to disconnect a battery that is in a car or tractor before load testing it??. I do not want to hurt any electronics in the car.???
I am sure I could read the directions, but that is just not the guy thing to do. TIA S.