>>2736899You need 2 amps of 120v so 240w of power generation to charge (average charger).
That’s for 6-8 hours or however long the manufacturer says it takes your battery to charge (again industry average, recalculate it yours is different).
Most solar panels produce less than what they are rated for, so you need a 400w solar panel in the summer, 600w in the winter.
I think a 400w foldable solar panel is like 35lb and $600 also very large and awkward even when folded.
On the plus side, you can do 30-40 miles in 1-2 hours and then have the rest of the day to stop and recharge.
It’s a lot of money either way, but you probably need to drop a couple thousand dollars to pull this off successfully.
One plan would be to get a trailer and 2 extra batteries (at least 3 total) and do 90-120 miles in one day, then camp for 2-3 days while the batteries recharge from a single 400w solar panel.
Or do something like 3 batteries and 3 chargers and a 3 gang surge protector, ride 75 miles and stop at a gas station (or anywhere that you know for sure has a power outlet available) for 6-8 hours to recharge, then do 25 miles to the camp and you still have 2.3 batteries charged for getting around camp and getting back to the gas station on the way home (plus you could solar charge too).
I had 3 shark batteries on my bike with a DateX3 combiner, I averaged about 95 miles @22mph on a single charge, that was with groceries and all sorts of shit being carried around town, it was my daily driver. I thought about taking it camping (but never did) like this…
>Big City -> Small City - 71 miles, early morning>Stop at Whole Foods for the morn/noon to eat, recharge bike, get food for camping, use wifi>40-60 miles up canyon to boondock camp on the river>rent an RV electric site for $32 on just 1 night or pay someone $10 to use their plug for 6-8 hrs during the day when I needed to recharge>reverse plan to get home after a few days, or to get more food in Small City. 
