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CF Coolers
I can hear a beeping sound coming from the cooler
Try this solution
Operate the cooler with an external power supply
The first bar on the battery indicator flashes and the cooler emits a beeping sound to indicate that the internal battery of the cooler is empty.
1
Connect the cable into the cooler DC inlet.
2
Connect the other end of the cable into the DC power outlet of the external source (the battery inlet or the cigarette lighter of the vehicle).
3
Keep the switch of the battery mode on 'ON' to allow the internal battery to charge with the external DC power.
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