Sony HDR-AS50R Read This First Manual page 106

the shooting is in standby.
We recommend having spare battery packs handy for two times or three times the expected
shooting time, and making trial shots before taking the actual shots.
You may not be able to turn on the camera or the battery pack may not be effectively charged if
the terminal section of the battery pack is dirty. In this case, wipe any dust with a soft cloth
lightly to clean the battery pack.
Do not expose the battery pack to water. The battery pack is not water-resistant.
Even the power is turned off, battery will be consumed. Remove the battery before storing.
[100] Information
About the remaining battery charge
If the battery pack runs out so fast although the remaining charge indicator is high, fully charge the
battery pack again. Remaining charge indicator will be displayed correctly. Note that it may not be
displayed correctly in the following situations:
Using the camera for a long time in high temperature
Leaving the camera with fully charged battery pack
Using a heavily used battery pack
[101] Information
How to store the battery pack
To maintain the battery pack's function, fully charge the battery pack and then fully discharge it
on the camera at least once a year while storing. Remove the battery pack from the camera and
store it in a cool, dry place.
To prevent staining the terminal, short-circuiting, etc., be sure to use a plastic bag to keep away
from metal materials when carrying or storing.
[102] Information
On battery pack life
The battery pack life is limited. Battery capacity decreases over time and through repeated use. If
decreased usage time between charges becomes significant, it is probably time to replace it with a
new one.
The battery pack life varies according to how the battery pack is stored or used.
Battery pack
Battery pack
Battery pack