welcome to the group! it is a blast, get your safety gear lined up and join a group hookup from the site!

John,

tl;dr
if you skip the regulator, go with the higher voltage battery.  Battery watt hours is the most important factor.

dissertation:
those numbers look like they were all calculated, not measured - so I would not put much faith in them.  I put them into a spreadsheet and the 16V power is always 6.7% more than the 12V power, at least for the 13 I entered.

I recall you installed a voltage regulator in your battery box., and that it is a switching regulator (I think? I can't find any technical info on the nocqua regulator)  that can both lower and increase voltage.  Given you have that, all that matters for the battery behind it is how many Watt-Hours it has.  The regulator will be slightly more efficient dropping voltage vs increasing, so, if you had a higher V battery, that would be slightly better.

If the Voltage regulator is a linear regulator, and can only drop voltage - then the higher voltage battery would be better.  Also, if you wanted to skip the voltage regulator and connect directly to your FF, then the higher voltage battery would be better, as it will sink 1-2V below 'target' voltage as it drains.

I can't seem to find a good discharge chart for the Nocqua batteries.  I may need to capture this myself.

see ya,
Brian.

watched it last night, very cool. Bike hiking is a blast.  Continental sell some excellent tires for bike hiking - very flat resilient, pricy...but major reduction in road side flat repairs.

I half expected you to pull an inflatable kayak from that huge dry bag you had.

wish I could make it out, family in town those exact days - have a great time!

other than the back sounds like a great day, love the Fort!

Lawn chair webbing works great for shrimp flies.

But I’ll take a herring over any lure/fly.  I use these as backup when I run out of bait.

thanks for the pointer, I'll get some.  Need to get some thicker/stronger thread too.

If I can make bait, I like to do that, else, I'd prefer bring a lure

and on that day...the Harbor Freight Shrimp fly was born

stopped at harbor freight on the way to an appointment, picked up some threads...added two glow bead eyeballs

can't wait to try it.