Dead battery mystery
#16
I'm all confused.
I just went thru this load testing phase 2 weeks ago. Your load test pic shows less than 12v. Load test should be over 12V. At the rate your pic shows (i.e., <12V, your battery will never be charged by the alternator). What voltage do you get from the alternator (with and without load)? BTW, my alternator showed 13.9v without load (passing), and but showed 12.25 with load (failed).
I am not sure what instrument you are using, but I used a Fluke and my charger (Schumacher) has an alternator-test-mode feature (readings from both units were very very close).
I just went thru this load testing phase 2 weeks ago. Your load test pic shows less than 12v. Load test should be over 12V. At the rate your pic shows (i.e., <12V, your battery will never be charged by the alternator). What voltage do you get from the alternator (with and without load)? BTW, my alternator showed 13.9v without load (passing), and but showed 12.25 with load (failed).
I am not sure what instrument you are using, but I used a Fluke and my charger (Schumacher) has an alternator-test-mode feature (readings from both units were very very close).
Last edited by cab83_750; 09-22-2013 at 02:33 PM.
#17
Without pretending to be an expert, I just want to clarify thàt based on the info here, you may need to do another alternator test (both load and no load tests). Again without further info, I get the impression that you may have alternator issue.... And perhaps battery issue.
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