spare battery

The only spare part necessary is a 9 V battery.

唯一需要的备件是一个9V的电池.

The main control computer chip is connected with a spare battery to enable the system to work as before during power failure.

主控电脑芯片同时还接有一电池，作为备用电，使得本系统在停电时依旧工作。

I hope you brought another torch or a spare battery . This one's at its last gasp.

我希望你多带了一只手电筒或备用电池. 这个手电筒的电池快用完了.

Optional accessories: Car charger lead, direct connect adaptor, spare battery-buy these at bottom of this page.

可选配件: 汽车充电器带头作用, 直接连接适配器, 备用电池 - 购买这些在底层的这一页.

The new handsets-perhaps called the iPhone 11-might be able to turn themselves into wireless chargers, allowing them to give spare battery to other phones, according to rumours.

据传，可能会被称为iPhone11的新款手机也许能变成无线充电器，匀出多余电量来为其他手机充电。

Spare no effort to promote the development of lithium-ion battery industry and innovation.

不遗余力地推动锂离子电池产业发展与创新.