Charge the battery pack before using it the first time.
By connecting the Model 9418-15 AC Adapter to the instrument and to an AC
power outlet, the battery pack can be charged without turning the instrument on.
When to charge:
When powering the instrument from the battery pack without the AC adapter, the
low battery indicator( ) is displayed when the battery charge is depleted,
indicating that the battery pack requires charging.
1
Connect the AC adapter to its power cord
and to the instrument.
2
Plug the power cord into an outlet.
The CHARGE LED lights red
when charging begins. The
" " indicator appears red
on the display.
Charging is finished when the
CHARGE LED turns off. If
the" " indicator appears
white when the AC adapter is
unplugged, charging was
successful.
Nominal continuous operating time (when powered only by the battery pack)
• The battery pack is subject to self-discharge. Be sure to charge the battery before ini-
tial use. If the battery capacity remains very low after correct recharging, the useful
battery life is at an end.
• To avoid problems with battery operation, remove the batteries from the instrument if
it is to be stored for a long time.
• The instrument is designed to be able to charge the Model 9459 Battery Pack during
operation.
Although the CHARGE LED may light red when using the Model 9418-15 AC
Adapter, this does not affect measurement.
Refer to "3.2 Connecting the AC Adapter" (p. 41) for details about the AC adapter.
(operating at 23°
C)
After a full charge, with the LCD backlight off (five minutes after last keypress): ap-
proximately six hours
After a full charge, with the LCD backlight always on: approximately four hours
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