王传福在一次电话会议上透露说，1998年他指示手下20名高级工程师悄悄地改进比亚迪的手机电池技术，以便有一天能用于汽车。

On a conference call, Mr. Wang disclosed that in 1998 he had instructed 20 of his top engineers to quietly scale up BYD's cellphone-battery technology so that it could be used to power cars some day.

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