Here is a rollable solar charger with a 5200mAh battery that can charge your devices. The SOUL Solar Scroll has a lightweight design. You can power it up by unrolling the panel or through a wall outlet. The device can be used to charge a smartphone, tablet, action cam, GoPro camera, and other devices.
You can use this solar charger on your backpack while hiking. It has an operation temperature range of -10 to 55C.