All the handheld solar chargers with internal batteries are a waste of space, typically they advertise in milli-amps.
You need something that outputs USB and 12v, has mono-crystalline panels that fold together and can generate 10 or 20 amps. 20 amps can recharge a laptop.
Consider adding a Lithium Ion battery bank to your system, recharge your phone, tablet, Kindle, Li Ion and AA/AAA batteries safely at night in the tent.
When cycle camping in France I used to run a Sat Nav from a battery bank and solar panels on top of my baggage.
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets