Every PS4 lightbar waste electricity and battery life.....seriously I hate the battery life on my controller. I just wish I could use my rechargeable batteries :,( . Yes I know I'm one of the few on this site.
You're in luck, Sony is adding the option to dim the light bar in the next update.
i would like to turn it off completely. no reason at all, this function is not included unless the rumors about sony's last-minute price cut were true. but, i guess that's another thing electrical tape is good for. i barely even remember there was a light there anymore.