does led notification lights drain battery?

[Nastybloodlust]

Does the led notification lights drain battery?

 

[SpookDroid]

Yup, but it's negligible (unless the LED is always ON...even then it would be minimal, but at least it would be noticeable). Same thing with sound and/or vibration, with the latter being the most 'power-hungry' (again, it's negligible most of the time).