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If you choose to connect the refrigerator to a battery together
with a battery charger, they shall be connected in parallel as
shown in the picture below. Do not connect a battery charger
alone with the refrigerator. If you choose to connect a DC
converter with the refrigerator, a 10000μF capacitor shall be
connected in parallel with the converter as shown below. Failing
to comply with these will result in damage to the power supply
unit of the refrigerator.
To further reduce the radio interference during DC operation,
twist the negative and positive cables (use separate cables)
together into a spiral form between the battery and the DC power
source as shown below.
The switches of other electric appliances or their power
cables shall not be connected to the power cables that
connect the refrigerator with the battery or other power
source. Those external devices may damage the power
supply unit of the refrigerator due to the high voltage pulses
generated from them. Do not use an extension cord.
The longer the power cable to the refrigerator becomes, the
wider the cable’s cross section is required. Insufficient cross
section will result in voltage drop and lead to poor cooling
performance. Refer to the following chart for the
recommended cross section or wire gauge and the fuse
amperage.
10000μF Capacitor
Twisting lead wire