Sony ILCA-99M2 - Manual (Page 45)

[17] Preparing the camera Charging the battery pack
Charging the battery pack using a charger
Insert the battery pack into the battery charger.
Push the battery pack lightly until it clicks.
1
Connect the battery charger to the wall outlet (wall socket).
How to connect the battery charger may differ depending on the country/region.
With the battery charger that can be connected to the wall outlet (wall
socket) directly
With the battery charger that requires the power cord to connect to the
wall outlet (wall socket)
2