2007 Club Car President problem

[Billy Hale]

It’s been a while since I have been on here hope all is well with every one!
I have a 2007 President. I noticed that we were not getting the travel distance
we use to in our batteries. I went to move it the other day and it would try to move but drop out. I would cycle the coward/reverse switch and it would try but drop out again. As old as the batteries were I went ahead and got a new set. Installed and charged them and it does the same thing. If I push the excellerator pedal slowly it try’s to move but drops out. I can hear a small whining noise as it try’s to move. This has been a great cart! All I have ever changed was batteries and one speed sensor. Any help would be greatly appreciated!!!