Juniper Allegro CE Owner's Manual page 37

You can run the Allegro from the adapter while the batteries are
being charged. To charge the battery complete the following steps:
1) Plug the AC charging adapter into an AC outlet.
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 battery pack.
3) When the batteries are fully charged, the charging circuit
switches into trickle charge mode. You can leave the Allegro
connected to the adapter continuously without overcharging
or damaging the batteries.
❏ USB/Power Dock: Using the USB/Power Dock, you can charge the
battery pack while it sits in the Power Dock. To charge the battery
complete the following steps:
1) Plug the AC charging adapter into an AC outlet.
2) Insert the connector into the external power input jack located
on the back of the Power Dock. Place the Allegro into the Power
Dock to begin charging the battery pack until the amber
charging light on the Power Dock goes out. It can take up to
five hours to fully charge a battery pack.
3) When the batteries are fully charged, the charging circuit
switches into trickle charge mode. You can leave the Allegro in
the Power Dock continuously without overcharging or
damaging the batteries.
❏ Vehicle Power Adapter: With this adapter, you can charge battery
packs via an automobile cigarette lighter. To charge the battery,
complete the following steps:
1) Plug the adapter into the cigarette lighter.
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.
Hardware Features Page 2-25