Battery chargers and power sources for use with mobile devices; battery chargers and electrical power supplies for use with cell phones; battery chargers and electrical power supplies for use with smart phones; battery chargers and electrical power supplies for use with computer tablets; battery chargers and electrical power supplies for use with electronic devices with a charging interface; battery chargers and electrical power supplies for use with mobile devices with a charging interface; battery chargers and electrical power supplies for use with cell phones with a charging interface; battery chargers and electrical power supplies for use with smart phones with a charging interface; battery chargers and electrical power supplies for use with computer tablets with a charging interface