KX1 Battery Pack.
i also have an external 4 cell LiIon battery pack for my KX1. You could
just use 3 cells to get 12.4V, which is more than the internal primary Lithium's
normally provide. The radio has power diode inputs so it will draw current
from which ever battery has the higher voltage (internal or external).
i wanted more power for /pm operation so i built a LiIon pack with 4 Sony
18650's (1.5 AH) cells to give me 16.7 V, (do this at your own risk, it voids
the warranty). Then i use 2 diodes to drop the voltage down to 14V (which is
the maximum rating for the KX1) and this gives full output on transmit. The
voltage goes up to 15V on receive but there is apparently no damage. i switch the
diodes out of the circuit as the battery voltage and my power output drops.
The transmit voltage is down to about 14.0V after a few hours. The controller
for these cells disconnects at 10.0V.
This 4 cell LiIon battery pack weighs 7 ounces. 10 AA NiCad's weigh about the
same but have 1/3 the capacity.
Paul w0rw
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