Panasonic FZ-G2 Series Operating Instructions Manual page 176

11. Remove the screws (3), top cover (D) and right cover (E).
12. Remove the screws (3), bottom cover (F) and left cover (G).
13. <Only for Removable-SSD model>
Remove the screws (4) and battery latch cover (H).
<Only for standard model>
Remove the screws (2) and battery latch cover (H).
14. Remove the lock lever (I).