4.5 Battery Charging
22
4.5 Battery Charging
The PM100D is powered by a 1 cell LiPo
+
battery that needs to be recharged
intermittently by plugging the AC adapter or plugging the USB cable to a computer.
To fully charge the battery it takes approximately 3-4 hours. A built in charging circuit
automatically regulates and terminates the charging.
Following battery icons in the display header show the charging state from empty to
full battery
The empty battery symbol starts blinking for one minute until the unit shuts off.
When an external power supply is plugged the symbols above change sequent until
the battery is fully charged.
The following icon will appear when a wrong charger is connected or the battery gets
not fully loaded after a given time of approximately four hours. This can happen
when the unit is switched on, the charging is done via USB link and the computer
cannot supply sufficient charging current. The symbol will disappear after 10 seconds
when disconnecting the external power supply and show the actual battery charging
state.
Should the „arrow icon‟ permanently remain there may be a malfunction
either in the battery itself or in the charging circuitry, please refer to
chapter 6.3 for maintenance and repair.
The AC adapter for charging the system battery that comes with the PM100A
provides a wide range power input from 100VAC to 240VAC and an output voltage
from 5VDC. The mains connectors for US, Europe, UK and Australia can be
switched by pressing the lever and pulling off; the new connector easily clicks into
the socket.
Do not use other than the provided power supply at the DC input. Higher
input voltages may damage the unit.
When charging the battery via USB link it will take longer until the battery is fully
charged or it never gets completely fully charged. It depends on the connected
computer what charging current can be supplied. The maximum current that can be
drained via USB is limited to 500mA. Some laptop computers just can drive 100mA
via USB interface.
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