手机没有电了，我得去充电。

Shǒujī méiyǒu diàn le, wǒ děi qù chōngdiàn.

My phone has no power; I have to charge it.

请把灯关了，别浪费电。

Qǐng bǎ dēng guān le, bié làngfèi diàn.

Please turn off the light; don’t waste electricity.

手机没电了，我要去充电。

Shǒujī méi diàn le, wǒ yào qù chōngdiàn.

My phone has no battery; I need to go charge it.