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Message: <blockquote data-quote="marc84us" data-source="post: 139685" data-attributes="member: 13842">Hi,I have problems with Nikon D600 "aftermarket" battery grip. When I leave it attached to the camera, after a few minutes it shows that both batteries are discharged. (the camera wont even turn on) I have the battery in the camera and in the grip charged to 100%. The only solution is to remove the battery tray from the grip, turn the camera on (so it uses the battery from the camera itself) and then reinserting the tray, once I do this I can go check the battery in the menu and both say 100%.... and grip is fully functional all buttons work fine.Any ideas why is that going on? Or is it a faulty unit?thanks</blockquote>