Battery packs are an essential part of virtually any daily carry, but similarities between products can make it hard to choose the right one. For those who like to travel or spend time outdoors, the solar charging panel-equipped ZeroLemon SolarJuice is a clear standout. While the SolarJuice can still be plugged into a socket and charged normally, 8 hours in the sun will refill its 10,000mAh battery by 50%, giving you enough power to charge an iPhone 6 twice. The SolarJuice is also water-resistant, has a built-in LED flashlight, and features dual USB ports, making it possible to refill two devices simultaneously in rain, shine, or darkness. Interestingly, and unlike other battery packs, the SolarJuice also uses lithium-polymer batteries instead of lithium-ion. This makes it a bit lighter and more versatile than power banks with lithium-ion batteries, which are sensitive to extreme heat and cold. For anyone planning to spend a good amount of time away from a wall socket, the ZeroLemon SolarJuice will give you a novel, flexible way to recharge your devices. Get one on sale from our shop at the link below.