Hitachi DZ-BD70A - Manual (Page 38)

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„ Efficient Use of the Battery
• The battery will slightly discharge even if it is detached from the camcorder.
• If the battery is left attached to the camcorder, it will consume a slight amount
of power. Therefore, it is recommended that you charge the battery a day
before using the camcorder.
When you intend not to use the camcorder for an extended period
of time
It is recommended that you fully charge the battery at least once a year, attach it to the
camcorder, turn it on and fully deplete the battery charge, then remove the battery and
store it in a cool place again.
Battery life
The battery life varies greatly depending on the ambient environment and how
often the camcorder is used. If the usable time of the camcorder with a fully
charged battery is noticeably short, the battery should be replaced. Purchase a
new one.
Power Save function
To save power, do not leave the camcorder in recording pause mode for too long.
Even during recording pause, battery power is consumed at about the same level
as during recording.
By turning the power save function On, the camcorder will automatically turn off
if left idle for approximately five minutes in recording pause mode. For power
save function, see "How to use the LCD/EVF setup and initial setup" (p.60).