[Elecraft] Switching PS for travel with K2/100

[John Webster]

Hi Again Folk:

Any recommendations or experience with switching
PS for travel use with a K2 (with internal battery) 
AND with K2/100 top for use where necessary?

I realize these are two very different current supply
scenarios, but if I could find a light/quiet 16-20 amp 
switcher it might do double duty.  However, input
on either situation would be most welcome.

Requirements:

1. As light and small as possible (needs to fit into
Home Depot Aluminum case along with rig etc.)

2. RF quiet.  Needs to work with random wire
antennas, MP-1 or Buddipole (possibly indoors!).

3. 120-240volt 50/60Hz universal input.

4. Output voltage adjustable (for proper setting
to float charge K2 internal battery), or must be
at least 14.2 volts (?).

Searching VE3MCF's very useful index to 
reflector topics yielded an initially promising
discussion of the Phihong PSS-45W-150 
switcher.  However, in the end the consensus
was that it failed on point 2 above.

Any recommendations, warnings, tips or other
help would be very much appreciated.

73
John, N6JW