Having to run wires or regularly replace batteries would be too difficult.

必须架设电线或定期更换电池将太过困难。

youdao

The fuel-coated nanotubes could replace batteries for cell phones and other devices.

有燃料涂层的毫微管可以替代手机和其它装置的电池。

youdao

In the future, super capacitors will be more powerful and replace batteries in more and more devices.

将来，超电容器将会更加强大并且能够取代越来越多的设备里的电池。

youdao

Having to replace batteries on aircraft is not uncommon and was not considered out of the ordinary, she said.

NPR: US Regulator Asks Boeing For Full Battery History

Repeated operations are currently needed to replace batteries in pacemakers.

BBC: Heartbeat 'could power pacemaker'

Using the passive-power principle found in crystal radios, the method has proved successful over short distances in places where it is difficult to replace batteries or carry out maintenance.

ECONOMIST: Wireless charging