EV battery tech compared

Battery technology presents the the largest hurdle in about to electric vehicles. Current batteries don't provide range of fossil-fuel-powered vehicles. Worse, batteries require a lot longer to recharge as opposed to time it takes to fill a 16-gallon tank with gasoline.

But this isn't the final in the story, as battery technology is still being developed. For 100 years we've got in conjunction with lead-acid batteries, but today gone into high gear to look at new battery compounds that could end up being the breakthrough that lets electric vehicle performance equal or surpass those of gasoline-powered cars. Lithium ion would be the current favored chemistry, but other, certain exotic compounds are researched, for example zinc-air and lithium-polymer.

Electric enthusiast Mike Thompson has compiled a chart of current battery and electricity storage technologies, in addition to various specifications. By far the most useful number in the chart is watt-hours per kilogram (Wh/kg), which shows the vitality density of the power source. Greater electricity you can pack right battery, the higher quality range you'll get to have an electric.
 

Good chart, research on lithium-polymer batteries implies that they may hit 400 Wh/kg, the biggest of any other technology. Zinc-air is second at 200 Wh/kg, while nickel-metal-hydride, used in hybrid vehicles, are at 80 Wh/kg.