16 Aug 2012
Is Subhash Dhar on to something when he says his company, Energy Power Systems (EPS), can make storage systems for battery EVs at a quarter of their current cost?
Dhar’s plan for a breakthrough is not in building a better lithium-ion battery. Rather, he says the company is adopting the lessons used in li-ion to vastly improve the efficiency of lead-acid batteries, which hasn’t improved much since the Detroit Electric was on the road in 1915.
And he isn’t saying that lead-acid alone will be viable in electric cars. Instead, he wants to combine the high energy density of li-ion with the power delivery of lead-acid — two battery types working together in one cost-effective pack.