Quote:
Originally Posted by andrewwynn
Battery was charged, the test was done at battery plus with a state of the art tester that have a print out of a "perfectly operational" battery that had no problem putting out 500A but literally could not run an iPhone for 30 minutes.
So back to my original comment that a load test even from a modern tester can not measure capacity and can in fact give you a false sense of security with a glowing report on a battery that is end of life.
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A store that specializes in selling batteries does not have the capability to properly test a battery and errs on the side of not making a sale?
I think a state of the art battery tester/charger is one of those must have 'tools' for a DIYer. I use a CTEK 7002. About two years ago I took a battery to get replaced under warranty. I had already tested it and knew it was bad. It tested good. It was a new hire at the parts store that didn't do the procedure correctly. I insisted it was bad and asked the guy I normally deal with to run the test again. It tested bad. About two weeks later I started having the same problem. I made the mistake of not testing the new battery first. I assumed it was not the battery since I had been cleaning up the wiring for the switches in my console. I finally tested the battery and it was out of the box bad. Certainly there are lots of other electrical problems that can drain a battery. My point is to eliminate the battery first since it is easy to do and there is no cost. If members want to take your advice that's fine.