[Elecraft] Internal LiFePo4 for KX3

[Henshaw, Andy]

Has anyone looked into hacking a replacement battery case for the KX3 that featured LiFePo4 cells?  I've seen external LiFePo4 packs being used, but it seems like an internal solution might be workable.  With a 13.2V supply (four cells in series), one can run the KX3 in full-power mode.  In addition, the discharge curve of LiFePo4 is much better than NiMH.

I'm asking, because I'd like to take my KX3 on some backpacking trips and it just seems wasteful (of space) and slightly awkward (for setup) to have to carry an external battery pack in order to get full-power.

It appears that AA size LiFePo4 cells are available.  So, wouldn't it be feasible to arrange them in a 4S2P configuration that could replace the existing battery holder?

Andrew Henshaw