run down
verb
Definitions
To hit someone with a car or other vehicle and injure or kill them.
Example: He was run down while crossing the main road.
To criticize someone or an organisation, often unfairly.
Example: Don't run yourself down so much!
To find something or someone after searching for a long time.
Example: I finally managed to run down that report. I had filed it incorrectly.
To lose power slowly. Used for a machine, battery, or other powered device.
Example: If you don't switch off the car lights, you will run the battery down.