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.
2
此外，幸亏有笔记本电脑和移动手机制造商的开路，生产锂电池组的技术现正广泛传播。
Besides, the know-how for producing lithium-ion batteries is now widely dispersed, thanks to the pioneering work done by laptop and mobile-phone makers.
3
移动电源（充电宝）：视为备用锂电池，乘机时只能随身携带。
Mobile power supply (Charge Pal): It is regarded as spare lithium battery and can only be carried in hand baggage.
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