It takes a honkin’ big battery to power an EV fast-charging station, but that’ s how a two-vehicle station in Weymouth, Mass., works, according to this Boston Globe story. Using a battery lets them sidestep a shortage in transformers.

The battery can be recharged by conventional (single-phase) transformers,which utility National Grid added to a pole across the street. The gray, barrel-shaped transformers, commonly seen hanging off utility poles, are not in short supply, unlike higher-voltage ones required for fast-charging stations without a battery. S

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