Has this been happening the entire time since you replaced the battery and generator? We need to test the charging system at this point because just because you replaced it doesn't mean it is not the issue. The only way to know is to perform the attached test. These have a voltage regulator on them and it may have failed on the new generator.
Is the belt sipping at all?
Run through this test and let me know what you find. Thanks
Images (Click to enlarge)
Wednesday, December 25th, 2019 AT 3:02 PM