[Elecraft] Energizer L91 batteries for the K1-4

[Linda and Bob]

Has anyone tried to use Energizer L91 "AA" lithium chemistry batteries in 
the internal battery compartment of the K1-4? The cells are 1.5 volts @ 2900 
maH. They are not rechargeable; cost is around $2.00/cell; very slow 
constant discharge time. Will these cells fit inside without any issues with 
the battery space in the compartment? Thanks for your help and advice.

Duracell also makes a lithium chemistry "AA" battery called the "ULTRA" 
LF1500 FR6.

Bob Wilderman, K3SRO
dlrwild1 at verizon.net