A professional job typically signifies that someone is in the highest-level position in his profession, or has the potential for upward mobility with experience. A non-professional job usually means that you perform front-line or lowest-level duties in an industry or company. Laborer jobs and front-line sales and service jobs in retail are listed as examples of non-professional jobs on the University of Illinois website.
The J1772 plug was specifically designed for electric car charging. Problem is, given a typical electric car like the Nissan Leaf, it can take 15 hours to charge the battery from empty to its EPA-rated 75-mile range from that standard household source. Most plug-in cars have a J1772 port, letting them plug into public charging stations.
Forget Battery Swapping: Tesla Aims to Charge Electric Cars in Five Minutes. Tesla Motors is pushing the limits of charging technology to make electric vehicles as practical as gas-powered cars. Electric vehicles take too long to recharge to be practical for most consumers. Electric vehicles take too long to recharge. To charge a Tesla Model S just halfway takes five hours at a typical home or public charging station. But in its effort to make electric vehicles more practical, Tesla Motors is quickly reducing the charging times.