AeroVironment used a 250kW, grid-connected AV advanced battery charger for the demo. AV says that its earlier tests of Altair's batteries demonstrate "that such battery packs can sustain several cycles per day of ten minute charging and two hour discharging. Each cycle is equivalent to an electric vehicle traveling for two hours at 60 miles per hour."
So, how is this news? Altair's CEO, Alan Gotcher, has been telling us and others about the capabilities his batteries have for quite some time. AV calls the demo a "milestone," so that sounds like it means either this is the first time someone other than Altair has been able to verify Altair's claims, or it's the first time a group like CARB was on hand to see the quick charge in action. Either way, it's another step forward for these batteries and the Phoenix vehicles they're destined for.