4 Gadgets You Didn’t Know Could be Solar-Powered

http://www.sierraclub.org/sierra/2015-4-july-august/green-goods/4-gadgets-you-didn-t-know-could-be-solar-powered



Perfect for tech-junkie cyclists, SKYLOCK's solar-powered bike lock releases with a touch if you sync it with your phone. It tells you if someone's tampering with your bike (that's what the built-in accelerometer is for), lets you share your wheels with approved friends, and alerts your contacts if you have a serious crash. Twelve hours of sunlight translates to six months of frustration for thieves. $249




With 2C's Solar Light Cap, you don't have to carry a headlamp and batteries in addition to a hat. The flexible solar panel on the brim charges all day so the ultra-bright twin LEDs can light your path after dark. A charge gets you three hours at full power; on a dimmer setting, the cap will glow all night. $28 to $60, depending on style