When I head out on an off-the grid tour, I go with my kLite system, my dynamo wheelset, and two Voltaic units - one charged up and stored safely at the bottom of my frame bag and one that's charging from my kLite USB charger and front wheel hub dynamo in my top tube bag. This belt and suspenders battery - dynamo approach allows me to go all-in on electronic navigation and alleviates range anxiety. With this setup, my limiting factor is now entirely related to my fitness.
Ditching the wack SRAM colorways and going all in on silver! Check out the eeWings MTB titanium crankset coupled with a Garbaruk round silver direct mount chainring and a SRAM Eagle AXS X01 Silver chain. Old school colorway with new school materials. Not pictured - an impossible to find Cane Creek Hellbender BSA bottom bracket with the SKF MTRX "oil filled solid polymer matrix" bearings that are reportedly impervious to water ingress and release a small amount of lubricant whenever in motion.