Battery under load
I've been looking for an answer to a specific question, on past discussions on other forums and I also have an open topic on another forum but it always gets into the weeds of what batteries and what ...
Forum Discussion
Mandoguy wrote:
These are new batteries.(as of mid summer) Just to blow some minds, one is a Walmart group 29 and the other is a Carquest group 27. On another forum I asked about installing a switch so when one was weak I could use the other but someone who sounded like they knew what they were talking about convinced me paralleling them would be fine.
Since you'd want to be using a battery disconnect switch anyway you might consider installing a dual battery version like this Blue Sea m-Series 6007 Battery Switch which allows you to disconnect the batteries entirely, run Battery 1 only or Battery 2 only, or both together. :B
