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Message: <blockquote data-quote="Joseph Bautsch" data-source="post: 15320" data-attributes="member: 654"><p>The switch on my grip is electronic and is triggered when the first battery has discharged to where it is no longer able to power the camera thereby engaging the second battery. From what I understand from reading other forums Nikon batteries have a chip in them which allows the camera to read the charge condition to switch over to the next one. It's probably the reason aftermarket batteries won't automatically switch over in a grip. Or if the switch is not made even with Nikon batteries it may be a fault or lack of a switching feature in the aftermarket grip.</p></blockquote><p></p>