Quote Originally Posted by jp View Post
I need some help to understand my batteries overall condition. I went fishing a couple weeks ago and after about 5 hrs the trolling motor batteries were very weak. I charged fully the next day based on my charger which provided the “green” light. It was weak again after about 5 hrs. I used a tester the next charging and it was 12.7 which I would assume is a good battery. So I got a load tester and checked it. When I put a load on the fully charged battery, it went down to 10.6.

Question: I know I can still use these batteries, but they seem to be weak. At what point do most just replace the batteries? Is the best way to test?

I’m sure others can use this information also.

Appreciate all the help.
Replace them............low batteries on the water ****.

I think you probably have a dead cell........check the specific gravity of each cell. If they are are the same, then the battery is just getting old. What I think you will find is that one cell is significantly worse than the others. If that is the case, the get a new one.......

Later,

Geo