Panasonic FZ-A3 Series Operating Instructions - Reference Manual page 51

1.
Push the lock release lever all the way in (A) and lift the unit up (B).
Note
•
If it is difficult to disconnect the unit, push the lock release lever while holding the unit from the top
for easy disconnection.
Charging the batteries
When you connect the unit with the AC adaptor attached to the cradle, the batteries attached to the unit
are automatically charged.
Supplementary items
Operating Instructions - Reference Manual 51