Outboard not charging battery
I went out today in my boat and the outboard which is a Yam V6 200HP 2 stroke was not charging the battery. Voltage at Chart Plotter was about 11.7 v At the battery (tested with a mete)r it was 12.4
V for most of the trip. When we finished the battery was at 12.3v so obviously not charging.
Any ideas what this could be