3 sentences

1. 我的手机电量不足，需要充电。

   wǒ de shǒu​jī diàn​liàng bù​zú, xū​yào chōng​diàn.

   My phone battery is low and needs to be charged.

   Source: Dong Chinese Dictionary

2. 你可以将电脑设置为休眠模式以节省电量。

   nǐ kě​yǐ jiāng diàn​nǎo shè​zhì wéi xiū​mián mó​shì yǐ jié​shěng diàn​liàng.

   You can set your computer to sleep mode to save power.

   Source: Dong Chinese Dictionary

3. 这款电池的电量非常持久，可以使用很长时间。

   zhè kuǎn diàn​chí de diàn​liàng fēi​cháng chí​jiǔ, kě​yǐ shǐ​yòng hěn cháng shí​jiān.

   This battery is very long-lasting and can be used for a long time.

   Source: Dong Chinese Dictionary