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Supports cars such as (Nissan Leaf, Chevy Volt and other newer models)
SAE J1772-2009 is the most recent charging standard created and maintained by the Society of Automotive Engineers used primarily in North America. The previous standard, SAE J1772-2001, was manufactured by Avcon but is being phased out.
SAE J1772-2009, is based on a connector design from a company called Yazaki. It allows for bot 120V and 240V quick charging with power delivery up to 16.8 kW at 70 amps. Companies participating in or supporting the revised 2009 SAE J1772 standard include GM, Chrysler, Ford, Toyota, Honda, Nissan and Tesla. Manufacturers of the charging interface include Coulomb ChargePoint.
The SAE J1772 2009 connector shown below supports communication over power lines to identify the vehicle and control charging. It is designed to withstand up to 10,000 connection/disconnection cycles and exposure to all kinds of elements. Estimated connector lifespan (given one connection/disconnection daily) is 27 years.
The J1772 2009 standard includes several levels of shock protection, ensuring the safety of charging even in wet conditions. Connection pins are isolated on the interior of the connector when mated, ensuring no physical access to those pins. When not mated there is no voltage at the pins.
Wikipedia Entry: http://en.wikipedia.org/wiki/SAE_J1772