EBC Solar Panel

150 watts of power output capable of charging a 48-volt 11.6-amp-hour battery in only four hours with optimal sunlight

what a perfect solution to have it as a pannier style bag with all the panels that can fold in on themselves -- what's even better is that in good sunlight you can probably charge the bike to 100% in maybe 3/4 hours, if you looking at this as an offgrid/nomadic -- backup bike to ride from your parked up offgrid stealth van into a town/city area and then sit outside and charge up while working on your laptop that works out pretty good!