Haven't used the boat that much this summer. Got here today and plugged into the dock power, finished unloading the car. Checked the Link when I was done and it was only showing 12.4v. Something is not right. I started checking around, the power and ground leads seemed to move a bit in the charger. Got the screwdriver out and tightend the set screws. 20 minutes later, the voltage is climbing. Problem solved. Making sure the connections are tight is now on the monthly checklist.