Sony ILCA-99M2 - Manual (Page 47)

[18] Preparing the camera Charging the battery pack
Inserting/removing the battery pack
To remove the battery pack
Turn off the camera and press lock lever (A), then remove the battery pack. Be careful not to
drop the battery pack.
Open the battery cover. 1
Insert the battery pack while pressing the lock lever (A) with the tip of the battery
until the battery locks into place. 2
Close the cover. 3