This is true. It's 100% my fault though. I just can't expect to get 12+ hours out of it.
That is why we decided on the 200ah unit.
We don't typically fish for more than 6-7 hrs, but occasionally we do.
Always better to have more than youy need than not enough.
Also, even though the lithium batteries can be drawn down low and rechagrged, not drawing them down increases the number of charges they can take over time extendintg thier life.