I don't like AGM batteries.
Ok, that said-- If you think you have a problem, then what you're going to need to do is take every one of those batteries out and haul them to a battery shop and have them load tested. One bad battery can mess up a batch, and load testing will tell if one or more of them ARE bad.
If they all load-test okay, then you'll know why I don't like AGM batteries... ;)
I agree that your best bet at this point is to pull all eight batteries and take them to the battery seller for testing. I know that's a lot of work. It seems only fair that your installer be the one doing this work for free.
I would go to an auto parts store and purchase a battery load tester, about $40, and check my own first. You might have only one bad one.
4- 6 volt trojan batteries
Originally Posted by GoVols