YOU SAID:

if you dont charge your phone, it will die.

INTO JAPANESE

携帯電話を充電しないと、電池が切れてしまいます。

BACK INTO ENGLISH

If you don't charge your phone, the battery will die.

INTO JAPANESE

携帯電話を充電しないと、バッテリーが切れてしまいます。

BACK INTO ENGLISH

If you don't charge your phone, the battery will die.