Forum Discussion

joebedford's avatar
joebedford
Nomad II
Apr 07, 2018

Do battery cutoffs and auto-reset breakers ...

...fail in such a way that they reduce battery capacity? I put a brand new battery in my rig but this morning 20 minutes of furnace dropped the voltage enough that the main circuit breaker tripped ...
theoldwizard1's avatar
theoldwizard1
Explorer II
Apr 07, 2018
joebedford wrote:
...fail in such a way that they reduce battery capacity?

Possibly, but unlikely.

Get a multimeter and a lonnng test lead. Check the voltage at the battery posts. Then leave the ground side connected to the battery and take the meter and the other probe and see what the voltage is at the far end (furnace blower). There should be less than 0.1V difference. More than 0.2V and you have a real problem somewhere in that path.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,191 PostsLatest Activity: Jan 19, 2025