How to opening this Monster

OK I have opened Tabs before and they are not a problem BUT then I'v run into this. Looked all over the normal places for the info but could not find anything relating to the issue at hand. Plenty on the Tab 2 but this is different. Mettle Body and this may have a back cover or may be part of a design

Samsung Galaxy SM-T815Y

Anyway need to replace Battery or/and Charge Port, Digitizer & LCD are intact.......... hope to keep them that way

If you can help, it will be a great help thanks