What does the symbol on the dashboard that look like a battery mean?

The symbol on the dashboard that look like a battery is called battery light.

If the battery light is on the alternator is not charging the battery as it should. Eventually, the battery will have no power.

If the battery is discharged, the car will not start. If this happens you will need to jump start the car to get the engine running again. A poorly charged battery can also freeze in cold conditions.