Charging your iPhone outdoors does not have to be a hassle. You could always rely on solar chargers to get the job done. You are going to need some sunshine for your solar charger to be effective though. The PowerPot Thermoelectric Generator is another charger you can use during emergencies or when you are camping. It converts energy from any heat source into power to charge your USB devices.
The PowerPot does remind us of the BioLite in some ways. It lets you cook and charge at the same time. You can charge smartphones, digital cameras, lights, and radios. It has a waterproof and fire-resistant design. The device is quite portable too. Unlike solar chargers, you can use the PowerPot outdoor charger anywhere, anytime.
The PowerPot turns heat into energy to charge your gadgets. It is portable, waterproof, and light. The device is available for under $150 at this time.[Product Page]