A recently developed battery is the smallest implant battery in the world. It measures  2.9mm in diameter and 13mm in length—about the size of a pencil tip. It may soon be used to power those implantable medical devices. The battery is already being used by a patient in Europe.

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世界上最小的可植入电池新近被开发出来。它直径仅为2.9毫米，长13毫米，如铅笔尖般大小。这种电池有望用来为可植入医疗设备提供动力。目前欧洲的一位患者正在使用这种电池。