Recently I have found that when the batteries stop charging and become solid to indicate all is finish I disengage and then re-engage to make sure its
charged to 100%. When that's finished I reload the batteries and grip.Then is off the the menu and to my surprise it shows that the camera body charge is at 85% and
not 100%.All batteries are EN-EL3e and the cameras are D300s and D700.Both chargers are nikon equipment
cheers