http://www.iflscience.com/chemistry/two-battery-breakthroughs-future-electric-cars
Theoretically, lithium-air batteries can store 12 kilowatt hours per kilogram (Kwh/kg), compared to 0.18 Kwh/kg for lead-acid batteries and 13 Kwh/kg for petrol.
Theoretically, lithium-air batteries can store 12 kilowatt hours per kilogram (Kwh/kg), compared to 0.18 Kwh/kg for lead-acid batteries and 13 Kwh/kg for petrol.