Meet the Cyntur JumperPack mini: a portable device that helps you deal with your dead car battery and charge your smartphone on the go. It has a 12000 mAh battery to jump-start up to 8-cylinder engines. There is a 2.1A USB port to enable you to charge your smartphones and tablets. You also get a 200 lumen LED light.
The JumperPack mini is IPX3 weatherproof and compact. It weighs less than 1 pound and lets you jump-start your car with peace of mind thanks to its reverse-charge and over-current prevention. Sets you back $99.[where to get yours]