Se me acabó la batería.

When to use

Use this when your phone suddenly stops working due to lack of power, and you need to explain why you can't make calls, use apps, or access information.

How it works

This uses the reflexive construction 'se me acabó', which is idiomatic for something happening to oneself unintentionally. 'La batería' is the subject.

• se me acabó: idiomatic expression meaning 'I ran out of' or 'it ran out on me'. The 'se' indicates an accidental or unintentional event, and 'me' is the indirect object pronoun.
• la batería: 'the battery', the subject of the verb 'acabó'.

Register and formality

This is a very common and natural expression used in everyday conversation, suitable for both informal and semi-formal contexts. It doesn't directly address another person, so formality is determined by the surrounding conversation.

Notes

Explains why you need power. Neutral everyday wording.