Forum Discussion
rgatijnet1
Mar 21, 2016Explorer III
cross country wrote:
Just a thought. When your RV has been sitting along time and you are not sure of the state of charge of all of the batteries the alternator may be expected to charge, it may be an idea to run your generator to charge the batteries before loading the alternator beyond capacity. The result of overloading the alternator will cause the alternator to seize and the belt to rip off.
I don't believe that you can run an alternator over capacity. A 140 amp alternator is designed to put out 140 amps, all day long, without failure. It will not put out 150 amps. If the alternator failed it was probably because a bearing failed. The alternator has sealed bearings but if the alternator is located where it can get a lot of road spray, or other debris, the seal can fail on the bearing and the bearing will seize.
About Motorhome Group
38,756 PostsLatest Activity: Sep 23, 2025