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[Q] Is battery affected by bluetooth volume?

8th February 2014, 12:03 AM   |  #1  
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While driving I always hook up my cellphone (in this case a Nexus 5) to my car stereo via bluetooth for music streaming. And out of an irrational fear of battery draining too fast, I always keep the cellphone volume as low as possible and rather pump up the volume rocker on the car stereo itself.

Lately I've been wondering if the volume level on the cellphone (while bluetooth streaming) actually makes any difference on battery consumption.
I mean is not like the cellphone speakers are being used, but still getting the cellphone volume up actually makes the car speakers sound louder so... what do you say?

I've search info on this question across the web to no avail (It may be a silly one anyway but still... enlighten me please ).
8th February 2014, 12:13 AM   |  #2  
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Quote:
Originally Posted by sergiotca

While driving I always hook up my cellphone (in this case a Nexus 5) to my car stereo via bluetooth for music streaming. And out of an irrational fear of battery draining too fast, I always keep the cellphone volume as low as possible and rather pump up the volume rocker on the car stereo itself.

Lately I've been wondering if the volume level on the cellphone (while bluetooth streaming) actually makes any difference on battery consumption.
I mean is not like the cellphone speakers are being used, but still getting the cellphone volume up actually makes the car speakers sound louder so... what do you say?

I've search info on this question across the web to no avail (It may be a silly one anyway but still... enlighten me please ).


Can't imagine that it would, since the bluetooth service is running regardless of volume level, and battery usage is predicated on the time the service keeps your phone awake.
8th February 2014, 04:36 AM   |  #3  
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While I can imagine that there is a theoretical, but completely miniscule difference in sending audio where the high bits are always zero (it might compress a hair better), I can't believe that it would have any impact on your battery life.

For best audio quality you want to use as many bits as you can when in digital -- less background noise and low-level distortion. That means turning the BT volume up and the car volume down. Unless you've got your tone, bass boost, thump-thump-erator, or other effects turned on, that means basically max BT volume on the phone.
8th February 2014, 04:54 AM   |  #4  
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Pretty sure volume control for bluetooth streaming is all done in software, so lowering the volume does nothing but make things hard to hear.

If you're THAT concerned about battery life, having the Bluetooth radio on at all should give you nightmares...
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