I was called away while i was posting this question, otherwise I'd have finished the post with the information below.
That you built yourself a Li Fe PO4 battery/charger is amazing. Do you have a degree in electrical engineering?
I have an Off Grid TREK 220 watt folding solar "blanket". Off Grid TREK is a Canadian company and his products, though pricey are first class.
For a battery I have a BLUETTI AC200 MAX, a lithium iron phosphate battery. While it's about 15% heavier than an equivalent Li-ion battery it is, as I'm sure you know, far safer from combustion. Again, about the same price as the TREK solar blanket so, yeah, lots of $$ tied up in this system. The main problem with it is that it charges from the solar blanket much slower than other similar batteries.
Hopefully it's a software problem I can upgrade through the BLUETTI app on my phone. The solar blanket is 3.5 ft. x 6.5 ft. and cable locks to crossbars on the roof of my 2019 MAZDA CX-5 SUV through the grommets on each side of the array. Wires run into my trunk to charge the BLUETTI.
My reason for posting this question was to see if others had any other, better ways of handling this. I rejected a Honda generator because I absolutely did not want to carry cans of gasoline in my SUV's enclosed rooftop carrier. That's just asking for trouble and it stinks like hell.
A bonus for this charging system is that I can use it at home in a power outage - or your typical zombie apocalypse.
BTW, my e-mtb is an E-CELLS Super Monarch Crown (I know, a rather ridiculous name). It is a 2 wheel drive, 2 batteries, dual suspension monster at 95 pounds. it can carry up to 400 pounds. I need it to haul out boned-out meat from big game when I hunt here in Nevada. I "eschew" ATVs and feel they are a pox on the land. This bike has a patented single charging port that charges both batteries at the same time which is a convenance.