[Elecraft] Charging Lithium Ion batteries (KX2) from Car

[Yngvi (TF3Y)]

Thanks Jim.

I'll take a look at that one. I wasn't thinking about mobile operating but
the KX2 would run directly off  the car battery.
Rather, I was thinking of what my possibilities were when I spend days away
from an AC outlet..The Samlex inverter you show in your presentation
clearly needs a LOT of additional filtering for your setup!

Perhaps the folks at Elecraft have a good pointer.I think a mobile charger
might be a good addition form some of us.

73, Yngvi TF3Y

On Sun, Apr 15, 2018 at 8:18 PM, Jim Brown <jim at audiosystemsgroup.com>
wrote:

> On 4/15/2018 7:04 AM, Yngvi (TF3Y) wrote:
>
>> Are there recommended chargers for this? The Tenergy charger supplied by
>> Elecraft runs from 100-240V range.
>>
>
> If you don't mind the RF noise they produce, a small DC-AC inverter can be
> a good solution. Slides 213-214 in http://k9yc.com/KillingRXNoise
> Visalia.pdf show a small one that I bought to run a laptop in W6GJB's
> truck for mobile contesting.  This is the smallest model in their Pure Sine
> Wave series, and it's much quieter than larger models in the same series,
> which are too noisy use close to antennas.
>
> For others who suggested other DC chargers -- all forms of Li batteries
> can easily be damaged if not charged per their design specs. Unless you
> know those specs and can be certain to conform to them, stick with the
> "official" charger.
>
> 73, Jim K9YC
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