Strictly depends on the power level you intend to run. I ran my KX3 at 5w
for all of Field Day, and for a two-day camping trip last weekend without
charging in between. It's a "K2 Energy" lithium ion and weighs just a few
ounces. Couldnt be happier with it. After 4 days of off-on operating,
still produces 12.4 volts.
YMMV.
-73- de W4SK
I would appreciate knowing the experiences of folks who have run their K3
on battery power for several (4-8?) hrs., with perhaps a 20% TX duty
cycle. What types and sizes of batteries seem to be the best balance of
staying power and portability?
-Paul Grigorieff, N1HEL
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