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A New York-based company is at least the second in the past year to pitch a system that refills an electric vehicle's battery in a way similar to how conventional cars are refueled at gas stations, according to GigaOm.

It seems like this story replays itself time and again. Some company is awarded a bunch of money from the federal government for advanced battery technology and claims that its breakthroughs will lead to yada yada yada. We've heard it many times, too, but it would be unfair not to give props when due, right?

I have heard of silver-zinc batteries before, but this is the first I have heard of them actually being mass-produced as of late. Apparently, because the source materials can get expensive, the batteries were pretty much forgotten long ago and replaced by chemistries such as lithium- and nickel-based batteries. ZPower is hoping to change that with their new nano-engineered silver-zinc batteries. The chemistry is inherently safe according to our source article, and the batteries can be safely ram