Third Rail Mobility describes the battery system as an all-in-one solution, combining the features of a traditional protective case with a battery, external charger, and universal USB charger. The Third Rail System is composed of two main pieces, each available separately—Slim Case sells for $40 and Smart Battery sells for $60. Also packed in with the full System are a Micro USB to USB charging cable and a special USB adapter. Slim Case is a…
