Sony BC-L120 Operation Manual page 10

Location and Function of Parts
3 DC OUT (DC power supply)
connector (XLR, 4-pins, male)
Supplies power to an external device
through an optional DC connecting
cable. Pin 4 is the plus connector and
pin 1 the minus.
Note
The BC-L120 cannot charge a battery
pack at the same time it supplies DC
power to an external device. If you
begin using the unit to supply power
to an external device while charging a
battery pack, the charging stops.
4 AC IN (AC power input)
connector
Used to connect the charger to an AC
outlet through the supplied AC power
cord.
8(EN)
5 Plug holder receptacle
The supplied plug holder secures the
supplied AC power cord so that it will
not come loose from the charger.
Plug holder (supplied)
To remove the plug holder
receptacle