Tait TP9100, Battery Charging Manual, Page: 7 / 78

Battery Charging Guide 7
English
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If no charger LED stays lit, the charger will resume charging only
when the ignition is switched on again. Minimal charger standby
power will be drawn from the vehicle battery until then.
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If a charger LED stays lit, the charger will continue to charge the
radio battery even while the ignition is off, and will continue to
draw power from the vehicle battery. Once the battery is
charged, the charger draws minimal current and has little effect
on a healthy vehicle battery.
Receiving and making calls while charging
Notice For best charging performance, switch off the radio before
placing it in the charger.
You can receive or make a call while the radio is in the charger, but
your radio performance may be degraded. If you do remove the radio
from the charger to answer a call, the call will not be disrupted.
Removing the radio from the charger to make or receive a call ends
the charging process. Charging safely recommences when the radio
is reinserted into the charger.
If a portable radio was turned on while being charged, the battery
indicator may not be accurate when the radio is initially removed
from the charger. After a few seconds, the battery indicator is
updated to display the amount of charge available in the battery
.
Vehicle charger only
When a portable radio is used inside a vehicle, radio performance
may be degraded. Use a mobile radio for all critical communications.
If the radio must be left switched on while it in the vehicle charger,
removing the radio from the vehicle charger to receive or make a call
will improve radio performance.
Low battery warning
Notice Do not allow a Li-ion battery to fully discharge every time
you use it, or you will shorten the service life of the battery.
When the battery is low, your radio warns you in the following ways:
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The battery symbol on the radio display looks empty.
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The status LED on the radio slowly flashes red.
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A high-pitched beep sounds.
You should recharge or replace the battery as soon as possible.