"The Woodward route will employ off-wire technology, with 60 percent of the line operating on battery power provided by 750-volt rechargeable lithium-ion batter

"The Woodward route will employ off-wire technology, with 60 percent of the line operating on battery power provided by 750-volt rechargeable lithium-ion batteries." http://www.detroitnews.com/story/business/2015/06/08/rail-buying-wire-streetcars/28683317/ http://www.detroitnews.com/story/business/2015/06/08/rail-bu...