Have RV Questions? Ask an RV Mechanic Online.
Hi! My name is ***** ***** I can assist you with this. I may need some additional information from you first in order to give a complete answer.
The first thing to check is the batteries themselves to be sure they are viable and load testing is the only way to do that. Most places that sell batteries can do this for you. Just be sure you mark the cables or take a photo so you get them back the same way. Clean all the connections and especially the ground lead to the chassis. If you have a small digital multimeter this can help here with the testing. About $20 or so and easy to use and I can direct you in that.