The latest iPhones offer pretty good battery life but it's always handy to carry a portable charger, just in case. Solar power banks are particularly nifty because you can charge them on the go with the sun's energy. This makes them perfect for outdoor adventures like camping, hiking, backpacking, or a day at the beach where you wouldn't have access to an electrical power supply.
We've picked out some of the best solar power banks for the iPhone that will ensure you never need to worry about a low battery when out and about.