jeffwhite wrote:
Ok, so what would a unit like that look like? I would just intercept the negative cable and wire it directly into the coach? I've got 4 6V batteries that I'm running series/parallel to get the 12V. jeff
You are falling for some BAD information here......at least as it applies to an RV. All of that is NOT necessary and may actually be confusing and counter-productive......for most people.
Try the $15 solution first. It does take some thought when interpreting the reading at any given time but that is fairly easy.
Edit: You can not really tell the condition of each battery without splitting the string and testing each one individually.