I have purchased a new 12v, 86ah deep-cycle for my RV coach battery. I understand that the battery works best if it is "cycled", or discharged to about 20% capacity and then charged again. I have a volt meter, but I think voltage can show normal when battery capacity is running out. Do I have to load the battery to test capacity?
I think I may have "cooked" the last battery, so I am trying to figure out how to extend the life of this new battery.
Any help is appreciated.