[Elecraft] LiFePO4 battery packs

[Steve Jackson]

Greetings to all from the Old North State ... which doesn't feel all that
'north' lately.  100F + every day.



There's a good contingent of portable-power aficionados here, and likely to
be even more ... with the new radio shipping in volume.

So, what is the opinion of the learned and experienced regarding these
battery packs?

http://www.batteryspace.com/customizelifepo414505battery128v600mah4sflat77wh06aratewith55x21mmmalebarrelconnectorandpcb.aspx

and/or

http://www.batteryspace.com/lifepo418650battery128v2700mah55mmmalebarrelplug3456wh4aratewpcb.aspx

What's the better deal?  Two of the former?  Anything awful about these
packs?  Caveats in their use, other than the obvious?
They seem small, light, protected, and relatively inexpensive.  Am I
missing something?

I am not associated with this supplier.  Is there another one that's better?


Steve KZ1X/4
Chapel Hill

K2 # 0771  (the World's Most-Experienced Elecraft)
K3 # 6108