Hi Dennis,
You're missing the charge controller. Li-Ion batteries are very fussy
about the way they are charged. While it would be more efficient to run
the charger directly on 12 Volts, such a charger for the Elecraft
batteries is not available, as far as I know. Even if it were, it would
probably cost more than the inverter. The inverter, of course, also has
other uses.
Elecraft also makes it very clear that their batteries shouldn't be
charged with any other charger, and there are good reasons for that.
73,
Scott K9MA
On 11/16/2018 12:15, Dennis Moore wrote:
So you're taking your 12v source (let's say it's 13.8v), adding an
inverter to make 120v, then plugging in a charger to bring it back
down to 13.8v.
I'm fairly new to the KX3 game, but it seems like I must be missing
something here.
73, Dennis NJ6G
On 11/16/2018 09:58, K9MA wrote:
One solution to charging the Li-Ion batteries from a 12 V DC source
is to use a small inverter. One I've found which works well is the
Samlex PST-120-12. It's a small "pure sine wave" inverter, rated 120
W, costing about $120. It seems to work just fine with the KXBC2
charger, and should work just as well with the KXBC3. I would use
only a "pure sine wave" inverter, as the square wave from a "modified
sine wave" inverter is likely to cause the charger to malfunction.
Needless to say, I have no connection with the vendor, other than as
a customer. I've had good luck with other Samlex products.
73,
Scott K9MA
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