[Elecraft] Internal Batteries for KX1

Don Wilhelm w3fpr at embarqmail.com
Sat May 31 00:04:37 EDT 2014


Bob,

Lithium non-rechargeable AA cells will do quite well in the KX1.

Just my personal opinion, but with no personal experience. I would not 
run rechargeable  Lithium batteries inside any transceiver that was not 
specifically designed for them, and included a specific Lithium charger 
built in (like laptop batteries).
I hear too many horror stories about Lithiums catching fire and that 
sways my opinion.

Instead, I would suggest LiFePO4 batteries if you wish to install them 
inside the KX1.  4 3.2 volt cells will give you 12.8 volts when fully 
charged, so you will need 2 AA battery eliminators (AA sized dowels with 
a wire from one end to the other) to complete the circuit.

If an external battery pack is a possibility, look at the Buddipole 
website for their A123 batteries.

73,
Don W3FPR

On 5/30/2014 9:50 PM, Bob via Elecraft wrote:
> What do you use for internal batteries in your KX1?
> I just got my new (bought used) KX1 cleaned up, tuned up and running nice.  It has the output power mod (changed 2 resistors) but with 6 internal 1.5V batteries the 1.4Watt output power is just too low for me.  Be for the batteries are dead I'll be running QRPP.  I want around 13V which give me 3Watts, but I really want internal batteries.
>
> The various formulations of 3.6V rechargable Lithium batteries look appealing but I've heard lots of stories about poor reliability.  Any suggestions?
>



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