Home Depot offers the AeroVironment TurboCord 240-Volt 16-Amp Plug-In Electric Vehicle Charger for $429 with free shipping. (AeroVironment via Amazon charges the same.) That's $70 off list price and the best deal we could find. It features a 20-foot cord, purports to charge up to three times faster than a standard charging cable, and is UL-listed for indoor and outdoor use. Deal ends June 28.