I have been having intermitant starting problems for past several months. in the morning car will have problem starting and takes several attempts before engine fires up. I can hear starter motor cranking up. when car is running, battery tester ( cheap one that plugs into cigaret lighter adapter ) will read between 14 and 13.8 volts. in the morning, battery reads around 11.5 volts or so. Battery is 2yr old Interstate that was bought new ( one of the first things I replaced when I bought the car ). so either battery is pooched or something is causing drain.
How would I go about testing it?