Ah but heat waste will be a serious issue. Our electric cars today charge efficiently because the internal resistance of the battery is much higher than the resistance in the rest of the charging circuit (basically the copper wire between the electric meter and battery, from our point of view)
Maximum Power transfer theorem tells us that we will achieve maximum power transfer when the resistance of the load (battery) is equal to the resistance of the rest of the circuit. However, when we reach that point, half the power will be used by the load (battery) and half will be converted to heat as a result of resistance in the rest of the circuit. So when we transfer maximum power, we do so at 50% efficiency. The lower the internal resistance of these batteries may mean we can charge them faster, but we will pay a price in efficiency to do so.
I'd also be concerned about safety. Low internal resistance is what makes Lithium-Ion batteries so dangerous. It's why, when shorted, they essentially become electrically powered hand grenades. I could certainly see that being even worse with these, but we'd need details to make those determinations, and I can't click on the link prior to commenting per slashdot TOS.
