That's right, Alan. You can safely connect an external power supply with the
internal batteries installed. The KX1 will draw power from whichever has the
higher voltage, the internal battery or the external power supply.
Of course, that will be the external supply normally, unless you are using
If your external battery voltage goes below the internal battery
voltage, the internal batteries will start draining.
i left my KX1 on for a few days and after i ran down the external battery the
internal batteries took over and became totally discharged.
These were the expensive Lithium AA
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