Hi,

The Eneloop batteries should work, albeit at a lower power level. And, you'll have to charge them externally, that is, outside the radio.

The power connector is your standard 2.1mm inner diameter/5.5mm outer diameter (I think) size coaxial plug. It's a standard part, same as lots of other QRP accessories. 
--
Buddy Brannan, KB5ELV - Erie, PA
Phone: (814) 860-3194 or 888-75-BUDDY



On Jan 11, 2012, at 7:17 PM, Scott Howell wrote:

> Hey Buddy,
> 
> You bet and thanks. I'm wondering if those enloop batteries would be =
> acceptable. I know the Elecraft manual talked about the Lithium  =
> batteries and that is an option, but these enloopes seem to be quite =
> good. Well anything rechargeable is good accept for nicad. Btw, have you =
> any idea what the DC plug is for the KX1? I have not found that in the =
> manual yet, but I'm thinking I'd like to have a DC cable for hooking up =
> here in the shack or other power sources.
> 
> 73
> Scott/N3BYY