Active VIP Member
- Oct 4, 2012
- Reaction score
- (Currently)Fort McMurray, Kamloops
Do you know how your battery was tested? Electronic diagnositc is a hit & miss as it does "not" real world load the battery. I prefer the old carbon pile with a proper load & time frame. Do that three times & you will know if the battery is good.
My dual AC Delco's, two years old this spring randomly started going dead. Typical blame it on everything else, finally separated them fully charged & used my carbon pile tester. The second battery when the load was applied for the first 10 seconds was perfect & I started to think batteries are good.
Then it started to drop & was flat.....no second & third test. AC Delco's are not cheap nor are they very good batteries. Did have two year replacement warranty & I was just inside that.
Carbon Pile is where it’s at for battery load testing. Half the CCA rating with a fully charged battery and surface charge removed. If it drops below 9.6 volts in 15 seconds or less, it’s toast. I have zero faith in electronic testers.