Joined
·
443 Posts
Is there any possible explanation other than that the battery is going bad?
This is a 2006 Elise which I bought new in 2007. The battery seems nonstandard - it is NAPA SureStart 65.
After driving the car, the battery measured 12.65 Volts. I think I turned off the alarm and immobiliser, total current was 1.6 microvolts. 24 hours later, the battery measured 12.05 Volts. Another 24 hours later, it measured 11.96 Volts.
I think the charging circuit is good. While running the engine at idle, the battery measures 13.5 Volts.
If a load test is called for, am I better off buying a tester, anywhere from $50 to $1,000 or paying a repair shop to test it?
This is a 2006 Elise which I bought new in 2007. The battery seems nonstandard - it is NAPA SureStart 65.
After driving the car, the battery measured 12.65 Volts. I think I turned off the alarm and immobiliser, total current was 1.6 microvolts. 24 hours later, the battery measured 12.05 Volts. Another 24 hours later, it measured 11.96 Volts.
I think the charging circuit is good. While running the engine at idle, the battery measures 13.5 Volts.
If a load test is called for, am I better off buying a tester, anywhere from $50 to $1,000 or paying a repair shop to test it?