BMW, Ford, General Motors and Volkswagen are among the eight U.S. and German automakers that will demonstrate a single-port fast-charging system for electric vehicles at the Electric Vehicle Symposium 26 (EV26) in Los Angeles starting next week.

Audi, Chrysler, Mercedes-Benz parent Daimler and Porsche will also show off the so-called DC-fast system, which will be able to recharge most battery-electric vehicles in as little as 15 minutes.

With a combination AC and DC charging capabilities, the DC-fast system is supposed to start sales by the end of the year and will enable U.S. and German plug-ins to be able to be recharged at most public charging stations while also accommodating high-powered fast-charging stations. The International Society of Automotive Engineers (SAE) has officially tapped the system as the standard for fast-charging.

Electric-vehicle proponents consider the establishment of a fast-charging standard to be an important key to plug-in vehicle adoption because the availability of publicly accessible fast chargers that can recharge a vehicle in minutes instead of hours makes range anxiety a moot point. Pike Research said last year that annual revenue generated by makers of electric-vehicle charging equipment will increase more than tenfold between 2011 and 2017 to about $4.3 billion.

Still, the fast-charging issue is far from settled because a separate fast-charging standard – CHAdeMO – has been proposed by the Japanese automotive industry. Toyota, Nissan, Mitsubishi and Subaru parent Fuji Heavy Industries are all partners in the CHAdeMO Association.