How to say charging treasure in English?

The English for "charging treasure" is: power bank.

Bilingual example:

1, the red light goes out, indicating that the battery is exhausted and the charging treasure needs to be charged.

When the red light goes out, the power box needs to be charged.

2. Mobile power supply (charging treasure): regarded as a spare lithium battery, it can only be carried with you when flying.

Charge Pal: regarded as a spare lithium battery, it can only be carried in hand luggage.

3. For the mobile power supply (charging treasure) with the start switch, ensure that it is always turned off during the flight.

During the flight, the mobile power supply with switch (charging Pal) must be in the off mode.

4, the biggest advantage of caffeine is that it can quickly refresh yourself and drive away fatigue. So coffee can be said to be my magical "charging treasure".

The biggest advantage of caffeine is that it can refresh you in one second and eliminate fatigue. So it can be said that coffee is my magical energy booster.