What Causes the ‘Blink’ in a Flashlight?

Your flashlight blinks because the battery is running low. When you press the button, it turns on and uses up energy from the battery. If the battery isn’t strong enough to keep sending power through all the time, the light flickers or goes out for a moment. It’s like when you’re playing with your toys and your batteries start to die, your toy might stop working for a bit before it dies completely.

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Examples

  1. Your flashlight blinks when you're trying to see in a dark room and it's almost out of power.
  2. When your toy car starts to blink as it moves slowly across the floor, it's like your flashlight.
  3. Your flashlight blinks when you press the button quickly after turning it off.

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