连接电瓶电缆，先连接正极电缆。
当充电时，锂离子运动到连接充电装置并含有电子的正极。
When they charged their battery, the lithium ions migrated to the anode where they combined with electrons from the charging device.
在锂电池充电时，锂离子从正极向负极移动，而在锂电池放电时，锂离子从负极向正极回流，为连接在锂电池的外接电路提供电流。
When the thing is discharged, the ions flow back and in the process cause a current to flow in an external circuit attached to the battery.
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