Scott,
The KX2 will not produce its full 12 watt output with the internal
battery pack - expect a maximum of 10 watts, but if battery life is a
consideration, use 5 watts output.
You can always use an external power supply or battery pack of up to 15
volts to provide full 12 watts output.
I would not recommend any method of charging Li-Ion batteries in the KX2
or any other radio. Remember the reports of "flaming" cell phones!
73,
Don W3FPR
On 12/17/2018 9:41 PM, K9MA wrote:
I don't own a KX3, but it appears the internal batteries are a
limitation. By contrast, the KX2, which I do own, uses an 11 V internal
Li-Ion (Li-FePO, I believe) battery, and is designed to provide full
output at that voltage. (The KX3 requires at least 12 V.) One
possibility for the KX3 would be to do as I did for my old KX1, which
was to replace the internal batteries with four AA Li-Ion cells, plus a
low dropout linear regulator to limit the voltage to 15 V. The batteries
would have to be removed to be recharged, and a second set would be
required for longer operation.
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