Juniper Systems Allegro DOS Manual - Manual (Page 44)

Page 2-26 Hardware Features
2) Insert the connector into the external power input jack located on
the top of the Allegro case. It can take up to five hours to fully
charge a pack. You can operate the Allegro with this adapter as
well as charge the batteries.
❏ External Battery Charger
The battery pack is removed from the Allegro to be charged using the
external battery charger. To charge the battery complete the following
steps:
1) Place the NiMH battery adapter on the charger.
2) Slide the battery onto the charger and leave until fully charged,
which can take up to five hours. Refer to the instructions that
came with the charger for more details. (Details on how to remove
the battery pack are located later in this chapter.)
Using Vehicle Power
It is important to have the Allegro in Vehicle Mode when it is left
connected to vehicle power for periods of an hour or more, either
directly or via the vehicle power adapter. Vehicle Mode prevents
excessive charging of the NiMH battery pack.
Using Vehicle Mode is necessary because every time the power is cycled
(the key to the vehicle is turned on) the Allegro begins a new battery
charge cycle. The Allegro circuitry detects when a battery pack is fully
charged, however, it takes approximately 20 minutes for this to occur.
Repeatedly attempting to charge a fully charged battery pack causes
premature degradation in battery performance. In Vehicle Mode,
charging is inhibited if the gauging circuitry indicates that battery pack
is above 90% charged.
To put the Allegro in Vehicle Mode, complete the following steps (the
default is for Vehicle Mode to be off):
1) Tap on the Start menu and select the Settings|Control Panel options,
double-tap on Power icon. The Power Properties screen appears.
2) Tap on the box next to the Select the In-Vehicle Charge Mode option so a
check mark appears. (Refer to Chapter 4, Windows CE, Control Panel for
details).