Forum Discussion

otrfun's avatar
otrfun
Explorer II
Feb 14, 2021

Cold Ambient Temps = Higher Alternator Voltage?

Our '16 Ram 3500 Cummins (220a alternator) typically charges around 14.3 - 14.4v about 95% of the time. On occasion charge voltage will drop to 13.9v on a long trip when the batteries get topped-off ...
RLS7201's avatar
RLS7201
Explorer II
Feb 14, 2021
If your alternator has a solid state built in regulator, what you are seeing is designed in and normal.

Richard

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,348 PostsLatest Activity: Jun 23, 2024