Juniper Systems Allegro DOS Manual - Manual (Page 41)

Allegro DOS Owner’s Manual 41
Important Information Regarding the Use of Alkaline Batteries
The Allegro Field PC is designed to be used with the rechargeable
NiMH battery pack that came with the unit. The alkaline battery
option should be considered as a backup to the NiMH battery pack,
not as the main source of power for an extended period of time.
Alkaline batteries have a lower capacity and a higher resistance than
NiMH batteries. Thus the battery life and performance of the Allegro
are reduced when alkaline batteries are used. The Allegro runs as
described below:
The clock speed automatically switches down to a maximum
speed of 33 MHz
The display heater cannot be used
As the batteries are drained, the Allegro automatically switches
to a slower clock speed and limits the backlight intensity to
further reduce power consumption and prevent the unit from
turning itself off because of power demands
Battery life ranges between 2 and 8 hours (this is highly
dependent on the temperature)
If you have been using alkaline batteries in the Allegro and switch
to a NiMH battery pack, the clock speed and backlight brightness
settings automatically return to the levels they were previously set
at.
Storing the Allegro During Inactive Periods
To protect the Allegro and your fi les during long or short-term
storage periods, please take the following precautions:
Save all data and programs you want to keep to disk.
Store the Allegro in a cool location (<20°C, 68°F).
Your data and programs are secure as long as they have been saved
to disk, even if the batteries become discharged. The data storage
disk is non-volatile. It does not depend on the battery to store the
data for extended periods.
Storing the Allegro for Less Than Two Months
If you store the Allegro for less than two months, we recommend
that you leave the NiMH battery pack in the Allegro and attach the
AC power adapter to keep the batteries charged. Once the battery
pack is fully charged, the Allegro switches to trickle charge mode.
You can leave the Allegro in trickle charge mode continuously
without damaging the batteries. The battery pack is fully charged
when you are ready to use the Allegro.