[Elecraft] Extremely light KX1 portable external power supply

[Phil Wheeler]

Bruce Prior wrote:

> I was rooting around a local drug store last night and discovered a 
> new way to provide the KX1 with an extremely light portable external 
> power supply.  I spied a 6 V Duracell� 28L lithium battery.  I found 
> that each 28L is half the length of an AA cell and very slightly 
> smaller in diameter.  I trundled over to a RadioShack and found a 
> single-cell AA holder (RadioShack #270-401A).  Back in the drug store, 
> I bought two of the 28L cylinders.  They're not cheap:  I had to pay 
> $8.99 apiece.  I loaded the single holder with both 28L batteries in 
> series.  Since their diameters are just a shade smaller than AA cells, 
> I inserted a single layer of the strong fiber paper used for a credit 
> card holder.  (I've forgotton the proper name of the stuff:  it's also 
> used for Priority and Express Mail envelopes.)  Now the two 28L's are 
> nice and snug.  The output voltage measures 12.55 Vdc;  the KX1 showed 
> slightly less than 12 Vdc on its internal voltmeter.  I've forgotten 
> the exact figure, and my KX1 is out of my hands for a week or so. 


What is the mA-H rating of that battery, Bruce?

Phil