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

[Jim Brown]

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/KillingRXNoiseVisalia.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