i like Buddipole products, but the prices and specs for the 'nanophosphate' (actually, lithium iron phosphate) batteries are 2X market and somewhat misleading...
I have to agree fully with this comment.
Those prices seem awfully high for what you're getting.
A 2.5Ah battery won't even run a little FT-817 for very long at 5W output.
If you want to BUY LiFePO4 batteries with some decent run-time, look at either
Dakota Lithium, or Bioenno. You could save a bit more by building your own from
cells intended for e-bikes, like from Headway. But prices have come down enough
in the last couple of years, that the amount you'd save by building your own packs
(and don't forget to include a BMS board!) has really decreased.
I'm seriously considering replacing the 42Ah of AGM in my portable battery box
with a 40Ah LiFePO4 battery from either of the above. Dakota seems to have a
better warranty, but the Bioenno offerings would fit better into my existing box.
Prices from either vendor are pretty close to one another.
My reasoning for considering the replacement are twofold:
1) It would almost double my run time in the event I can't deploy solar panels
to keep them topped off or the weather is unfavorable to the use of solar panels, and
2) It would cut the weight of my portable battery box roughly in half.
Best of luck with whatever you decide to do!
73 de N8AUC
Eric