Juniper Systems Allegro DOS Manual - Manual (Page 50)

Page 2-32 Hardware Features
6) Slide the door to the alkaline holder back into place, making sure it
snaps securely shut.
7) Place the alkaline battery holder in the left side of the Allegro battery
compartment and slide it all the way to the right.
8) Press the battery door closed until each release latch clicks into place.
9) Slide the release latches downward until they cannot slide any further
to securely latch the battery door closed.
Check the battery LED indicators from time to time. They are located
above the Allegro display. When the battery power gets low, replace
the alkaline batteries or insert a NiMH pack.
Important Information Regarding the Use of Alkaline Batteries
The Allegro Field PC is designed to use 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
follows:
❏ 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 two and eight 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 previous set at.