Newporttom wrote:TimLee wrote:Newporttom wrote:Went to dealer and they checked battery before selling me the new one and they said I didn't need one. Battery Health good, CCA 323. Only issue they saw was 12.38 v reading.
Car is 4 years old. 50K miles. New traction battery 1 month ago. Morning of the check it finished 100% at 6;30. I them drove it to dealer 10 miles away at 1 PM. Radio and driver seat heat on low were on.
There suggestion was to check again in 3 months. Any thoughts?
You never provided much information on why you thought you needed a new 12V battery
Why do you think you need one
Did you discuss that in another topic
I would be more confident in the dealer if their battery test gave you an estimate of 12V capacity rather than CCA.
But possible the 12V is OK.
The only reason I was going to replace the battery was because the car was 4 years old. I've had no issues. Here's the printout if it helps any.
Here are a few state of charge charts I found.
http://www.mmbalmainauto.com.au/PDF/Sta ... teries.pdf
http://modernsurvivalblog.com/alternati ... rge-chart/
For the printout you got to be valid, the battery needed to be JUST fully charged. The battery may have been tested as it was in the car, which may have been less than 100% charged. Just by looking at those numbers, it can only tell you the state of strength (at that moment) of the battery, not what the total potential of the battery is. (e.g., It may have been75-95% charged. )
Remember that any business wants to sell, and that they will offer you that new "something" before it is necessary. In the case of a battery, "needing to change" a battery may be one or two years down the line. That is why the load meter is so valuable - it can tell you that NOW "is time to change the battery".
In the future, I suggest that you get a charger, and charge it completely. Then do a load test with the cheap meter I showed earlier. First get a voltage reading, and then do a load test to see if the battery can tolerate the load without "crapping out" (my technical term).