tā bǎ shǒujī chōngdiànqì chā zài chāzuò shàng yǐhòu, shǒujī hěnkuài jiù néng kāijī le.

she

Breakdown of tā bǎ shǒujī chōngdiànqì chā zài chāzuò shàng yǐhòu, shǒujī hěnkuài jiù néng kāijī le.

• 在zài: at
• 了le: change-of-state particle

Questions & Answers about tā bǎ shǒujī chōngdiànqì chā zài chāzuò shàng yǐhòu, shǒujī hěnkuài jiù néng kāijī le.

Why is 把 used here?

把 marks the noun that is being handled or affected by the action.

In this sentence:

她把手机充电器插在插座上以后...

the structure is:

Subject + 把 + object + verb + complement

So:

• 她 = she
• 把手机充电器 = takes the phone charger and...
• 插在插座上 = plugs it into the socket

A 把-sentence is often used when:

• the object is specific and known
• the action changes its position, state, or result

That fits well here, because the charger is being moved into a new position: plugged into the socket.

Without 把, you could also say:

她在把手机充电器插在插座上以后... is not right for this meaning.

A more natural non-把 version would be something like:

她把手机充电器插在插座上以后...
or
她把手机充电器插上以后... if the context is already clear

So 把 is helping highlight what she did to the charger.

What exactly does 手机充电器 mean here?

手机充电器 means phone charger.

It breaks down like this:

• 手机 = mobile phone / cell phone
• 充电器 = charger

Together:

• 手机充电器 = phone charger

In real life, this could refer to:

• the charging adapter
• the charging unit
• sometimes loosely the whole charger setup

Chinese often combines nouns this way, so this is a very normal compound noun.

Why is 插在插座上 split into several parts instead of just one verb?