Battery/Alternator issue potentially? Please help

[amitmishra4]

Jäger,

Did as you suggested. All tests with (-) connected to chasis. Here are the results:
Battery Voltage with car sitting overnight: 12.2v
Battery Voltage when car is started up: 13.8V(hovers between 13.7V and 13.8 V now)
Battery Voltage when load button is pressed: 12V

Car has not been driven in two weeks and I leave the terminals disconnected for fear of discharge, except the last 2 days when I have been doing these tests.

Thanks

[Jager]

Originally Posted by amitmishra4

Jäger,

Did as you suggested. All tests with (-) connected to chasis. Here are the results:
Battery Voltage with car sitting overnight: 12.2v
Battery Voltage when car is started up: 13.8V(hovers between 13.7V and 13.8 V now)
Battery Voltage when load button is pressed: 12V

Car has not been driven in two weeks and I leave the terminals disconnected for fear of discharge, except the last 2 days when I have been doing these tests.

Thanks

This just verified the (-) cable connection to your battery seems to be OK (corrosion problem area).
What is the voltage across the battery, motor running at idle, when you have all accessories (lights, radio (is it working?), AC, fan) turned-on?. As JFP mentioned earlier, it should not drop to 12.03 volts, that is an indication the alternator is bad. Did Pep Boys perform a load test on it?