Sony HDR-CX440 How To Use Manual page 25

The POWER/CHG (charge) lamp lights orange.
The POWER/CHG (charge) lamp turns off when the battery pack is fully
charged. Disconnect the USB connection support cable from this product.
A: USB connection support cable
B: AC Adaptor
To store the Built-in
Put the Built-in USB Cable back in the pocket on the grip belt after use.
Note
The shape of the AC Adaptor varies depending on the countries/regions.
Be aware of the following notes on using the AC Adaptor.
Use a nearby wall outlet (wall socket) when using the AC Adaptor. Disconnect the AC
Adaptor from the wall outlet (wall socket) immediately if any malfunction occurs while
using this product.
Do not use the AC Adaptor placed in a narrow space, such as between a wall and
furniture.
Do not short-circuit the USB jack of the AC Adaptor or battery terminal with any
metallic objects. This may cause a malfunction.
To disconnect the AC Adaptor from this product, first disconnect the USB connection
support cable from the AC Adaptor, and then disconnect this product from the USB
connection support cable holding the connectors.
Hint
It is recommended that you charge the battery in a temperature range of 10 °C
to 30 °C (50 °F to 86 °F).
USB Cable