Contactless charger and battery management

A system comprising:

• a stationary unit comprising:
• a power source;
• a plurality of first opto-inductive transceivers, each comprising:
• a first inductive device coupled to said power source;
• a first control unit comprising one or more opto-communicating circuits;
• and
• a first switching circuit coupled to said power source and to said first inductive device, wherein said first switching circuit is controlled by said first control unit to transfer energy from said power source to said first inductive device;
• a mobile unit comprising:
• one or more batteries;
• a plurality of second opto-inductive transceivers, each comprising:
• a second inductive device coupled to said batteries, wherein said second inductive device is capable of receiving energy from a respective one of said first inductive devices when said one of said first inductive device and said second inductive device are in proximity;
• a second control unit comprising one or more opto-communicating circuits, wherein said second control unit communicates with a respective one of said first control circuits;
• a second switching circuit coupled to said batteries and to said second inductive device;
• a battery management system coupled to said batteries, to said plurality of second control circuits and to said plurality of second switching circuits;
• wherein said battery management system controls said plurality of second switching circuits to transfer energy from said plurality of second inductive devices to said batteries, and wherein said battery management system controls each of said second control circuits to communicate with a respective one of said first control circuits to control the transfer of energy between a respective first inductive unit and a respective second inductive unit, and wherein said battery management system causes one of said first switching circuits to be activated and a respective one of said second switching circuits to be deactivated during a first time period, and causes said one of said first switching circuits to be deactivated and said respective one of said second switching circuits to be activated during a second time period.