Battery Life; Connecting To A Cigarette Lighter Socket; Connecting To A Regulated Power Supply - Kenwood TH-D74A User Manual

Charger Error
• While charging, if a problem is detected in the battery,
"Charge Error !!" appears on the display.
• The following conditions create charging errors:
• A short in the battery is detected.
• Overvoltage in the battery is detected.
When a charge error occurs, no key other than [ ] will
•
function.

BATTERY LIFE

Before you operate the transceiver outside using a battery
pack, it is important to know how long the battery pack
will last. The operating times listed in the table below are
measured under the following cyclic conditions:
TX: 6 seconds, RX: 6 seconds, Stand-by: 48 seconds
We recommend you carry extra battery packs with you, in
case the battery pack becomes depleted.
Battery Type Output Power
KNB-75L
Li-ion battery pack
KNB-74L
Li-ion battery pack
KBP-9
Battery case

CONNECTING TO A CIGARETTE LIGHTER SOCKET

To connect the transceiver to the cigarette lighter socket in
your vehicle, use an optional PG-3J Cigarette Lighter cable.
When the PG-3J is connected to the cigarette lighter plug,
the transceiver automatically starts charging the battery pack.
While you operate the transceiver, it charges the battery pack
in the background.
Note:
◆ To connect with an external 24 V power source via a DC-DC
converter, only use the optional PG-3J Cigarette Lighter cable.
◆ Using the PG-2W DC cable in this situation may cause a fire.
DC-DC Converter
24V
12V
Socket
24V
12V
DC-DC Converter
24V
12V
Note:
◆ Do not use the PG-2W to connect directly to a vehicle battery
(12 V). Extensive voltage could result in damaging the
transceiver.
◆ If the input voltage exceeds approximately 17.5 V, the
transceiver automatically turns OFF.
Operating Time/
Hours (Approx.)
H 6
M 8
L 12
EL 15
H 4
M 5
L 7
EL 9
H -
M -
L 3.5
EL -
PG-3J
PG-3J
PG-2W

CONNECTING TO A REGULATED POWER SUPPLY

To connect the transceiver to an appropriate regulated DC
power supply, use an optional PG-2W DC cable.
1 Confirm that the power of both the transceiver and the DC
power supply is OFF.
2 Connect the optional PG-2W DC cable to the DC power
supply; the red lead to the positive (+) terminal, and the
black lead to the negative (–) terminal.
Fuses (3 A)
3 Connect the barrel plug on the DC cable to the DC IN jack
of the transceiver.
• While a DC power supply is connected with the DC IN
jack, the transceiver automatically initiates charging the
battery pack.
Note:
◆ The supply voltage must be between 12.0 V and 16.0 V to
prevent damaging the transceiver. If the input voltage exceeds
approximately 17.5 V, the transceiver automatically turns OFF.
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