Well over a year ago, I ordered a cheap 3rd-party copy of the Nikon MB-D11 grip for the D7000. It served me well....... until last fall when I finally pulled off the latching tab. I made a fix by using two small patches of velcro, but I knew that would be a temporary solution.
So last night, I had an epiphany. I have the AA tray that came with the grip...... and I've never used it. So I wondered..... would the broken parts from the EN-EL15 tray be interchangeable with the AA tray?
Out to the van I went, and got my jewelers screwdrivers. Three tiny screws on both, pull the parts off the AA tray, and reassemble on the EN-EL15 tray.