I am going to assume that you are a normal person and that the phrase “failure of a diode” makes as much sense as the IRS Form 1040.

So if you’re wondering, “Why is my RV converter not charging my battery?”, I’m going to skip the answers best left to your RV technician. Instead, let’s put our two heads together and fix the problem, no multimeter required!

1. Do You Trust the Battery?

Are you blaming the converter without just cause? How do you know the battery didn’t bite the dust? You can either measure the open-circuit voltage across the terminals, or if that phrase just struck fear in your heart, take your battery to the nearest auto parts store. They’ll check it for free.