Dead cell maybe?
I had one do that - I charged it all day, then went to start it and nothing happened.
Took it to Auto Zone (where I had gotten it from) plopped it on the counter and told them I need a new one. Got 50% of the cost of the old one from warranty.
How did they test the engine? The best test I ever saw on one involved several steps, including revving the engine to 2000 RPM and a few other things. That is what found the dead cell. The battery was still starting the truck but was getting sluggish.
Last edited by SC Tiger; 08-06-2014 at 13:24..