[NLRS] Previous presentation on batteries?

[Jim Froemke]

My memory fails me as I try to find this presentation and remember who
presented it at a recent Aurora or CSVHFS conference. 
It was about the various battery technologies and caring for them.

I'm looking around for guidance and information regarding reliable brand(s)
of lithium batteries for portable microwave operation. 
That is my 12V, 70# SLA battery has aged (don't we all) and seems to have
gotten heavier over time. The newer LiFePO4 battery claims include much
lighter and the ability to hold their voltage longer. 

But there are so many brands out there with few "real" reviews that it's a
crap shoot. 
Just search the internet for 50 AH LiFePO4 batteries and you'll see what I
mean. 

73, Jim
K0MHC