Even if you did not add new apps to your phone, an app update alone can use lots of battery power.

即使你没有给手机添加新的应用程序，单是应用程序更新就会消耗大量的电池电量。

youdao

While each box contains a beacon, the unit only has enough battery power to transmit a signal for 30 days.

虽然每个盒子里都有一个信标，但这个装置的电池只能够传输30天信号。

youdao

They also have only enough battery power to last around 30 days.

黑匣子的电池也只够维持30天左右。

youdao

The only evidence is a battery pack and a power line on his side.

VOA: standard.2010.01.27

Imagine how much power it takes to drive an artificial heart, so you've got to have a battery or some way of generating power continuously to operate that and that makes it difficult to think about implantable and so that's a really good example of Biomedical Engineering.

驱动人工心脏所需要的能量是难以想像的,所以需要电池或者是某种持续发电装置,来给人工心脏提供能量,这就增加了人工心脏的植入难度,这是很好的生物医学工程的例子

耶鲁公开课 - 生物医学工程探索课程节选

But Paul Woods says that idea is limited by the batteries used to store energy and that there is no battery currently available that can power long-haul trucks or heavy machinery.

VOA: standard.2009.09.02

If you let hybrids travel in the HOV lanes, they're not running on the battery power.

NPR: Hybrids and the 'Halo Effect' of Car Ads

At the moment, most small drones rely on battery power, so their flights are short.

ECONOMIST: Monitor

Battery power is one alternative, but so are hydrogen fuel cells, which offer greater range.

FORBES: Written by Jim Motavalli