When the Volt's battery pack is discharged, the 1.4-liter gas-powered four-cylinder engine kicks on to spin the 74-hp generator.

当沃蓝达的电池耗尽时，1.4升四缸燃气发动机就开工带动74马力的发电机。

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Likewise, Kodak took a costly black eye in the battery business from industry leaders Duracell and Eveready, and divested from its battery spin-off, Ultra Technologies, with another painful loss.

FORBES: The Fall of Kodak: A Tale of Disruptive Technology and Bad Business