Pack light and keep essentials topped off with a portable solar panel with power bank. Expect about 36 hours in full sun to fill the bank; speed depends on cleanliness, shade, time of year and day, orientation, and tilt. Some setups route all device charging through the bank, and you can also recharge the bank from a plugged-in laptop's USB port; avoid heat traps like a vehicle dashboard.
Avoid placing the charger in high-heat spots like a vehicle dashboard. Keep panels clean, out of shade, and oriented and tilted to the sun to improve performance. If rain moves in, stop panel charging and use the USB port on a plugged-in laptop to finish charging the bank.
Yes, it's compatible with Motorola phones. If you want to plug in directly, check whether the setup allows device charging from the panel itself or only through the power bank. If needed, pre-charge the bank before you go for quick top-offs on the move.
Some setups only charge the provided power pack, so everything charges through the bank. If you need direct device charging, verify the panel has the outputs you want and consider what happens if the pack fails. You can also charge the bank via USB from a plugged-in laptop when sun isn't available.
Expect about 1-1/2 days (36 hours) in full sun. Charge speed depends on cleanliness of the solar panel, shade, time of year, time of day, orientation to the sun, and tilt angle to the sun. If sunlight is poor it can take the better part of a day or longer.