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Which uses less power

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  Which uses less power Bill Powell <bill@anarchists.org> - 2024-10-22 02:15 -0400
    Re: Which uses less power Chris <ithinkiam@gmail.com> - 2024-10-22 09:26 +0000
      Re: Which uses less power VanguardLH <V@nguard.LH> - 2024-10-22 12:15 -0500
        Re: Which uses less power Frank Slootweg <this@ddress.is.invalid> - 2024-10-22 17:41 +0000
          Re: Which uses less power Joerg Walther <joerg.walther@magenta.de> - 2024-10-23 10:00 +0200
          Re: Which uses less power "Carlos E.R." <robin_listas@es.invalid> - 2024-10-23 16:10 +0200
          Re: Which uses less power VanguardLH <V@nguard.LH> - 2024-10-23 09:51 -0500
            Re: Which uses less power Bill Powell <bill@anarchists.org> - 2024-10-23 18:29 +0200
              Re: Which uses less power VanguardLH <V@nguard.LH> - 2024-10-23 13:02 -0500
                Re: Which uses less power Qihe <Q@invalid.invalid> - 2024-10-23 22:24 +0200
                Re: Which uses less power Bill Powell <bill@anarchists.org> - 2024-10-24 18:47 +0200
                  Re: Which uses less power VanguardLH <V@nguard.LH> - 2024-10-24 16:38 -0500
        Re: Which uses less power Jörg Lorenz <hugybear@gmx.net> - 2024-10-22 17:22 -0400
          Re: Which uses less power Qihe <Q@invalid.invalid> - 2024-10-23 00:34 +0200
            Re: Which uses less power Arno Welzel <usenet@arnowelzel.de> - 2024-10-23 12:36 +0200
              Re: Which uses less power Qihe <Q@invalid.invalid> - 2024-10-23 15:39 +0200
                Re: Which uses less power Arno Welzel <usenet@arnowelzel.de> - 2024-10-26 11:57 +0200
        Re: Which uses less power Chris <ithinkiam@gmail.com> - 2024-10-22 21:24 +0000
          Re: Which uses less power VanguardLH <V@nguard.LH> - 2024-10-22 20:04 -0500
          Re: Which uses less power micky <NONONOmisc07@fmguy.com> - 2024-10-22 23:29 -0400
    Re: Which uses less power Siard <xx@xx.invalid> - 2024-10-22 11:35 +0200
    Re: Which uses less power Theo <theom+news@chiark.greenend.org.uk> - 2024-10-22 10:54 +0100
      Re: Which uses less power Pamela <pamela.private.mailbox@gmail.com> - 2024-10-22 16:24 +0100
      Re: Which uses less power Chris <ithinkiam@gmail.com> - 2024-10-22 21:13 +0000
    Re: Which uses less power VanguardLH <V@nguard.LH> - 2024-10-22 12:18 -0500
    Re: Which uses less power sms <scharf.steven@geemail.com> - 2024-10-22 13:05 -0700
      Re: Which uses less power Chris <ithinkiam@gmail.com> - 2024-10-22 21:30 +0000
        Re: Which uses less power VanguardLH <V@nguard.LH> - 2024-10-22 20:04 -0500
          Re: Which uses less power Chris <ithinkiam@gmail.com> - 2024-10-23 06:27 +0000
            Re: Which uses less power VanguardLH <V@nguard.LH> - 2024-10-23 07:57 -0500
              Re: Which uses less power sms <scharf.steven@geemail.com> - 2024-10-23 06:32 -0700
              Re: Which uses less power Chris <ithinkiam@gmail.com> - 2024-10-23 17:24 +0000
          Re: Which uses less power "Carlos E.R." <robin_listas@es.invalid> - 2024-10-23 16:15 +0200
            Re: Which uses less power VanguardLH <V@nguard.LH> - 2024-10-23 12:21 -0500
              Re: Which uses less power Chris <ithinkiam@gmail.com> - 2024-10-23 20:21 +0000
              Re: Which uses less power "Carlos E.R." <robin_listas@es.invalid> - 2024-10-23 22:40 +0200
        Re: Which uses less power Qihe <Q@invalid.invalid> - 2024-10-23 03:35 +0200
          Re: Which uses less power Qihe <Q@invalid.invalid> - 2024-10-23 04:06 +0200
            Re: Which uses less power The Real Bev <bashley101@gmail.com> - 2024-10-22 20:45 -0700
              Re: Which uses less power Chris <ithinkiam@gmail.com> - 2024-10-23 06:27 +0000
                Re: Which uses less power "Carlos E.R." <robin_listas@es.invalid> - 2024-10-23 16:17 +0200
                Re: Which uses less power The Real Bev <bashley101@gmail.com> - 2024-10-23 19:53 -0700
                  Re: Which uses less power Chris <ithinkiam@gmail.com> - 2024-10-24 06:25 +0000
                  Re: Which uses less power "Carlos E.R." <robin_listas@es.invalid> - 2024-10-24 16:06 +0200
                    Re: Which uses less power The Real Bev <bashley101@gmail.com> - 2024-10-24 09:17 -0700
                  Re: Which uses less power micky <NONONOmisc07@fmguy.com> - 2024-10-24 21:02 -0400
              Re: Which uses less power sms <scharf.steven@geemail.com> - 2024-10-23 23:56 -0700
                Re: Which uses less power The Real Bev <bashley101@gmail.com> - 2024-10-24 09:20 -0700
            Re: Which uses less power Chris <ithinkiam@gmail.com> - 2024-10-23 06:27 +0000
              Re: Which uses less power "Carlos E.R." <robin_listas@es.invalid> - 2024-10-23 16:24 +0200
            Re: Which uses less power Bill Powell <bill@anarchists.org> - 2024-10-23 14:33 +0200
              Re: Which uses less power Qihe <Q@invalid.invalid> - 2024-10-23 15:58 +0200
              Re: Which uses less power Chris <ithinkiam@gmail.com> - 2024-10-23 17:24 +0000
      Re: Which uses less power sms <scharf.steven@geemail.com> - 2024-10-22 17:47 -0700
      Re: Which uses less power Arno Welzel <usenet@arnowelzel.de> - 2024-10-23 13:21 +0200
        Re: Which uses less power VanguardLH <V@nguard.LH> - 2024-10-23 08:26 -0500
          Re: Which uses less power Arno Welzel <usenet@arnowelzel.de> - 2024-10-26 12:04 +0200
    Re: Which uses less power micky <NONONOmisc07@fmguy.com> - 2024-10-22 23:32 -0400
      Re: Which uses less power Chris <ithinkiam@gmail.com> - 2024-10-23 06:30 +0000
      Re: Which uses less power "Carlos E.R." <robin_listas@es.invalid> - 2024-10-23 16:27 +0200
    Re: Which uses less power sms <scharf.steven@geemail.com> - 2024-10-23 05:51 -0700

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#143781

On 2024-10-23 08:27, Chris wrote:
> The Real Bev <bashley101@gmail.com> wrote:
>> On 10/22/24 7:06 PM, Qihe wrote:
>>> Qihe <Q@invalid.invalid> ha scritto:
>>>
>>>> Chris <ithinkiam@gmail.com> ha scritto:
>>>>
>>>>> sms <scharf.steven@geemail.com> wrote:
>>>>>> On 10/21/2024 11:15 PM, Bill Powell wrote:
>>>>>>> Which uses less of the phone's battery power on long trips?
>>>>>>>
>>>>>>> Playing long podcasts with the Android speaker as the output?
>>>>>>> Playing long podcasts with a Bluetooth speaker as the output instead?
>>>>>>>
>>>>>>> Any idea?
>>>>>>
>>>>>> Speaker wattage is about 3W.
>>>>>>
>>>>>> Bluetooth uses about 2.5mW.
>>>>>>
>>>>>> So the speaker uses more than 3000x the power.
>>>>>
>>>>> Do you have a source?
>>>>>
>>>>
>>>> https://www.androidauthority.com/does-bluetooth-drain-battery-1145853/
>>>>
>>>> -- 
>>> They say: "The results show that playing back audio over Bluetooth
>>> consumes essentially the same amount of power as playing back
>>> audio over speakers or headphones with Bluetooth turned
>>> off".
>>
>> Why not obviate the battery problem by putting the podcasts on a USB
>> stick plugged into the AUX socket?
> 
> You're assuming they're (1) in a vehicle and (2) where that is possible.

There are many stand alone BT speakers (the OP is using one) which also 
have an USB socket.

-- 
Cheers, Carlos.

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#143796

On 10/22/24 11:27 PM, Chris wrote:
> The Real Bev <bashley101@gmail.com> wrote:
>> On 10/22/24 7:06 PM, Qihe wrote:
>>> Qihe <Q@invalid.invalid> ha scritto:
>>> 
>>>> Chris <ithinkiam@gmail.com> ha scritto:
>>>> 
>>>>> sms <scharf.steven@geemail.com> wrote:
>>>>>> On 10/21/2024 11:15 PM, Bill Powell wrote:
>>>>>>> Which uses less of the phone's battery power on long trips?
>>>>>>> 
>>>>>>> Playing long podcasts with the Android speaker as the output?
>>>>>>> Playing long podcasts with a Bluetooth speaker as the output instead?
>>>>>>> 
>>>>>>> Any idea?
>>>>>> 
>>>>>> Speaker wattage is about 3W.
>>>>>> 
>>>>>> Bluetooth uses about 2.5mW.
>>>>>> 
>>>>>> So the speaker uses more than 3000x the power.
>>>>> 
>>>>> Do you have a source?
>>>> 
>>>> https://www.androidauthority.com/does-bluetooth-drain-battery-1145853/
>>>> 
>>>> -- 
>>> They say: "The results show that playing back audio over Bluetooth
>>> consumes essentially the same amount of power as playing back
>>> audio over speakers or headphones with Bluetooth turned
>>> off".
>> 
>> Why not obviate the battery problem by putting the podcasts on a USB 
>> stick plugged into the AUX socket?
> 
> You're assuming they're (1) in a vehicle and (2) where that is possible.

(1) Indeed. I posit that "long trip" implies a car rather than a set of 
portable bluetooth speakers. (2) I would be willing to bet that any car 
with a bluetooth connection to a phone will also have an AUX connection. 
  Maybe also a CD player.

-- 
Cheers, Bev
   Lawyering:  the only profession that if you
   didn't have it you wouldn't need it.

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#143797

The Real Bev <bashley101@gmail.com> wrote:
> On 10/22/24 11:27 PM, Chris wrote:
>> The Real Bev <bashley101@gmail.com> wrote:
>>> On 10/22/24 7:06 PM, Qihe wrote:
>>>> Qihe <Q@invalid.invalid> ha scritto:
>>>> 
>>>>> Chris <ithinkiam@gmail.com> ha scritto:
>>>>> 
>>>>>> sms <scharf.steven@geemail.com> wrote:
>>>>>>> On 10/21/2024 11:15 PM, Bill Powell wrote:
>>>>>>>> Which uses less of the phone's battery power on long trips?
>>>>>>>> 
>>>>>>>> Playing long podcasts with the Android speaker as the output?
>>>>>>>> Playing long podcasts with a Bluetooth speaker as the output instead?
>>>>>>>> 
>>>>>>>> Any idea?
>>>>>>> 
>>>>>>> Speaker wattage is about 3W.
>>>>>>> 
>>>>>>> Bluetooth uses about 2.5mW.
>>>>>>> 
>>>>>>> So the speaker uses more than 3000x the power.
>>>>>> 
>>>>>> Do you have a source?
>>>>> 
>>>>> https://www.androidauthority.com/does-bluetooth-drain-battery-1145853/
>>>>> 
>>>>> -- 
>>>> They say: "The results show that playing back audio over Bluetooth
>>>> consumes essentially the same amount of power as playing back
>>>> audio over speakers or headphones with Bluetooth turned
>>>> off".
>>> 
>>> Why not obviate the battery problem by putting the podcasts on a USB 
>>> stick plugged into the AUX socket?
>> 
>> You're assuming they're (1) in a vehicle and (2) where that is possible.
> 
> (1) Indeed. I posit that "long trip" implies a car rather than a set of 
> portable bluetooth speakers

The OP has clarified that it isn't single long journeys in a car, but
journeys with waits between stages. 

. (2) I would be willing to bet that any car 
> with a bluetooth connection to a phone will also have an AUX connection. 
>  Maybe also a CD player.
> 

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#143800

On 2024-10-24 04:53, The Real Bev wrote:
> On 10/22/24 11:27 PM, Chris wrote:
>> The Real Bev <bashley101@gmail.com> wrote:


>>> Why not obviate the battery problem by putting the podcasts on a USB 
>>> stick plugged into the AUX socket?
>>
>> You're assuming they're (1) in a vehicle and (2) where that is possible.
> 
> (1) Indeed. I posit that "long trip" implies a car rather than a set of 
> portable bluetooth speakers. (2) I would be willing to bet that any car 
> with a bluetooth connection to a phone will also have an AUX connection. 
>   Maybe also a CD player.

Mine has neither. I have an USB socket, though.

AUX in my parlance is a jack for connection of an audio source.

-- 
Cheers, Carlos.

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#143802

On 10/24/24 7:06 AM, Carlos E.R. wrote:
> On 2024-10-24 04:53, The Real Bev wrote:
>> On 10/22/24 11:27 PM, Chris wrote:
>>> The Real Bev <bashley101@gmail.com> wrote:
> 
> 
>>>> Why not obviate the battery problem by putting the podcasts on a USB 
>>>> stick plugged into the AUX socket?
>>>
>>> You're assuming they're (1) in a vehicle and (2) where that is possible.
>> 
>> (1) Indeed. I posit that "long trip" implies a car rather than a set of 
>> portable bluetooth speakers. (2) I would be willing to bet that any car 
>> with a bluetooth connection to a phone will also have an AUX connection. 
>>   Maybe also a CD player.
> 
> Mine has neither. I have an USB socket, though.
> 
> AUX in my parlance is a jack for connection of an audio source.

Mine is a USB socket that I plug an audiobook-filled thumbdrive into. 
Clearly labeled AUX.  That's the only thing I've tried.

-- 
Cheers, Bev
    "I love deadlines... especially the whooshing sound
     they make as they go by."           -Douglas Adams

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#143814

In comp.mobile.android, on Wed, 23 Oct 2024 19:53:56 -0700, The Real Bev
<bashley101@gmail.com> wrote:

>On 10/22/24 11:27 PM, Chris wrote:
>> The Real Bev <bashley101@gmail.com> wrote:
>>> On 10/22/24 7:06 PM, Qihe wrote:
>>>> Qihe <Q@invalid.invalid> ha scritto:
>>>> 
>>>>> Chris <ithinkiam@gmail.com> ha scritto:
>>>>> 
>>>>>> sms <scharf.steven@geemail.com> wrote:
>>>>>>> On 10/21/2024 11:15 PM, Bill Powell wrote:
>>>>>>>> Which uses less of the phone's battery power on long trips?
>>>>>>>> 
>>>>>>>> Playing long podcasts with the Android speaker as the output?
>>>>>>>> Playing long podcasts with a Bluetooth speaker as the output instead?
>>>>>>>> 
>>>>>>>> Any idea?
>>>>>>> 
>>>>>>> Speaker wattage is about 3W.
>>>>>>> 
>>>>>>> Bluetooth uses about 2.5mW.
>>>>>>> 
>>>>>>> So the speaker uses more than 3000x the power.
>>>>>> 
>>>>>> Do you have a source?
>>>>> 
>>>>> https://www.androidauthority.com/does-bluetooth-drain-battery-1145853/
>>>>> 
>>>>> -- 
>>>> They say: "The results show that playing back audio over Bluetooth
>>>> consumes essentially the same amount of power as playing back
>>>> audio over speakers or headphones with Bluetooth turned
>>>> off".
>>> 
>>> Why not obviate the battery problem by putting the podcasts on a USB 
>>> stick plugged into the AUX socket?
>> 
>> You're assuming they're (1) in a vehicle and (2) where that is possible.
>
>(1) Indeed. I posit that "long trip" implies a car rather than a set of 
>portable bluetooth speakers. (2) I would be willing to bet that any car 
>with a bluetooth connection to a phone will also have an AUX connection. 
>  Maybe also a CD player.

I have bluetooth and aux inputs in my 2005 Toyota Solara. 

I installed a device from GTA Car Kit. They make them for many older
cars (but not all).   It plugs into the back of the radio and runs when
I push the  CD button.  Once connected, a new option, CD changer, is
available, but it means bluetooth. 

Comes with a microphone so I can make and answer phone calls too.  It
works about as well as I can imagine.  Installation was pretty easy. .  

And they have videos for many cars that deal iirc with getting behind
the rado or into the dash.

I think the AUX input was partly in addition to the GTA Car Kit.  It had
a jack but the box and wiring is hid behind the radio.  From Amazon
perhaps I bought an extension that plugs into the GTA Car kit and mounds
in a round hole I had to make in the back of the utility box below the
radio. 

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#143798

On 10/22/2024 8:45 PM, The Real Bev wrote:

<snip>

> Why not obviate the battery problem by putting the podcasts on a USB 
> stick plugged into the AUX socket?

The Aux socket is a 3.5mm jack. A USB stick plugs into a USB port.

In a vehicle you have power for the phone anyway so there is no battery 
issue.

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#143803

On 10/23/24 11:56 PM, sms wrote:
> On 10/22/2024 8:45 PM, The Real Bev wrote:
> 
> <snip>
> 
>> Why not obviate the battery problem by putting the podcasts on a USB 
>> stick plugged into the AUX socket?
> 
> The Aux socket is a 3.5mm jack. A USB stick plugs into a USB port.

Mine (2013 Corolla) is a USB port clearly labeled AUX.  Take it up with 
Toyota!

> In a vehicle you have power for the phone anyway so there is no battery
> issue.

Perhaps the worry is the heat caused by the constant charge.


-- 
Cheers, Bev
    "I love deadlines... especially the whooshing sound
     they make as they go by."           -Douglas Adams

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#143766

Qihe <Q@invalid.invalid> wrote:
> Qihe <Q@invalid.invalid> ha scritto:
> 
>> Chris <ithinkiam@gmail.com> ha scritto:
>> 
>>> sms <scharf.steven@geemail.com> wrote:
>>>> On 10/21/2024 11:15 PM, Bill Powell wrote:
>>>>> Which uses less of the phone's battery power on long trips?
>>>>> 
>>>>> Playing long podcasts with the Android speaker as the output?
>>>>> Playing long podcasts with a Bluetooth speaker as the output instead?
>>>>> 
>>>>> Any idea?
>>>> 
>>>> Speaker wattage is about 3W.
>>>> 
>>>> Bluetooth uses about 2.5mW.
>>>> 
>>>> So the speaker uses more than 3000x the power.
>>> 
>>> Do you have a source?
>>> 
>> 
>> https://www.androidauthority.com/does-bluetooth-drain-battery-1145853/
>> 
>> -- 
> They say: "The results show that playing back audio over Bluetooth
>  consumes essentially the same amount of power as playing back
>  audio over speakers or headphones with Bluetooth turned
>  off".

I also saw that. Interesting. Thanks. 

I did suspect sms's claim was way off. 

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#143783

On 2024-10-23 08:27, Chris wrote:
> Qihe <Q@invalid.invalid> wrote:
>> Qihe <Q@invalid.invalid> ha scritto:
>>
>>> Chris <ithinkiam@gmail.com> ha scritto:
>>>
>>>> sms <scharf.steven@geemail.com> wrote:
>>>>> On 10/21/2024 11:15 PM, Bill Powell wrote:
>>>>>> Which uses less of the phone's battery power on long trips?
>>>>>>
>>>>>> Playing long podcasts with the Android speaker as the output?
>>>>>> Playing long podcasts with a Bluetooth speaker as the output instead?
>>>>>>
>>>>>> Any idea?
>>>>>
>>>>> Speaker wattage is about 3W.
>>>>>
>>>>> Bluetooth uses about 2.5mW.
>>>>>
>>>>> So the speaker uses more than 3000x the power.
>>>>
>>>> Do you have a source?
>>>>
>>>
>>> https://www.androidauthority.com/does-bluetooth-drain-battery-1145853/
>>>
>>> -- 
>> They say: "The results show that playing back audio over Bluetooth
>>   consumes essentially the same amount of power as playing back
>>   audio over speakers or headphones with Bluetooth turned
>>   off".
> 
> I also saw that. Interesting. Thanks.
> 
> I did suspect sms's claim was way off.

I do not know the wattage of the speakers in a phone, but I suspect it 
can be near 1 W, because that's the power of a traditional small 
speaker. However, phone speakers are far cousins of standard speakers. 
They produce an amazing volume with amazing reliability for something 
that small.

I guess the result of the experiment varies with the volume of the 
speaker. Was the user close to the speaker?

-- 
Cheers, Carlos.

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#143773

On Wed, 23 Oct 2024 04:06:12 +0200 (GMT+02:00), Qihe wrote:

> They say: "The results show that playing back audio over Bluetooth
>  consumes essentially the same amount of power as playing back
>  audio over speakers or headphones with Bluetooth turned
>  off".

Thank you for that test article which tested exactly the questions asked.
https://www.androidauthority.com/does-bluetooth-drain-battery-1145853/

"Does turning Bluetooth off save battery?
Does using Bluetooth headphones drain battery?
How much battery does Bluetooth use?"

"The results show that playing back audio over Bluetooth consumes
essentially the same amount of power as playing back audio over speakers or
headphones with Bluetooth turned off. On average, our devices recorded just
a 0.2% increase in power consumption when playing back audio over
Bluetooth. So, well into the margin of error territory. "

It was interesting they said "The louder you listen, the greater the
savings become."

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#143779

Bill Powell <bill@anarchists.org> ha scritto:

> On Wed, 23 Oct 2024 04:06:12 +0200 (GMT+02:00), Qihe wrote:
> 
>> They say: "The results show that playing back audio over Bluetooth
>>  consumes essentially the same amount of power as playing back
>>  audio over speakers or headphones with Bluetooth turned
>>  off".
> 
> Thank you for that test article which tested exactly the questions asked.
> https://www.androidauthority.com/does-bluetooth-drain-battery-1145853/
> 
> "Does turning Bluetooth off save battery?
> Does using Bluetooth headphones drain battery?
> How much battery does Bluetooth use?"
> 
> "The results show that playing back audio over Bluetooth consumes
> essentially the same amount of power as playing back audio over speakers or
> headphones with Bluetooth turned off. On average, our devices recorded just
> a 0.2% increase in power consumption when playing back audio over
> Bluetooth. So, well into the margin of error territory. "
> 
> It was interesting they said "The louder you listen, the greater the
> savings become."
> 

If you stay 7 feet far from your Bluetooth earbuds  you wont
 listen better than staying 7 feet far from the speakers.

-- 
Qihe

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#143788

Bill Powell <bill@anarchists.org> wrote:
> On Wed, 23 Oct 2024 04:06:12 +0200 (GMT+02:00), Qihe wrote:
> 
>> They say: "The results show that playing back audio over Bluetooth
>> consumes essentially the same amount of power as playing back
>> audio over speakers or headphones with Bluetooth turned
>> off".
> 
> Thank you for that test article which tested exactly the questions asked.
> https://www.androidauthority.com/does-bluetooth-drain-battery-1145853/
> 
> "Does turning Bluetooth off save battery?
> Does using Bluetooth headphones drain battery?
> How much battery does Bluetooth use?"
> 
> "The results show that playing back audio over Bluetooth consumes
> essentially the same amount of power as playing back audio over speakers or
> headphones with Bluetooth turned off. On average, our devices recorded just
> a 0.2% increase in power consumption when playing back audio over
> Bluetooth. So, well into the margin of error territory. "
> 
> It was interesting they said "The louder you listen, the greater the
> savings become."

Yeah, I guess once the speaker is functioning the additional minuscule
power required to move it microscopically more, barely registers. 

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#143757

On 10/22/2024 1:05 PM, sms wrote:
> On 10/21/2024 11:15 PM, Bill Powell wrote:
>> Which uses less of the phone's battery power on long trips?
>>
>> Playing long podcasts with the Android speaker as the output?
>> Playing long podcasts with a Bluetooth speaker as the output instead?
>>
>> Any idea?
> 
> Speaker wattage is about 3W.
> 
> Bluetooth uses about 2.5mW.
> 
> So the speaker uses more than 3000x the power.

Sorry, about 1000x the power, not 3000x.

-- 
“If you are not an expert on a subject, then your opinions about it 
really do matter less than the opinions of experts. It's not 
indoctrination nor elitism. It's just that you don't know as much as 
they do about the subject.”—Tin Foil Awards

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#143772

sms, 2024-10-22 22:05:

> On 10/21/2024 11:15 PM, Bill Powell wrote:
>> Which uses less of the phone's battery power on long trips?
>>
>> Playing long podcasts with the Android speaker as the output?
>> Playing long podcasts with a Bluetooth speaker as the output instead?
>>
>> Any idea?
> 
> Speaker wattage is about 3W.

So it draws around 1 ampere when running at around 3 volts? Really?

Maybe the theoretical output wattage is 3 watts, but a smartphons
speaker will also just draw a few 100 mA which will be around 0.3 to 1 watts

> Bluetooth uses about 2.5mW.

No. Depending on how actually use Bluetooth, the power requirements can
be much higher:

<https://novelbits.io/ble-power-consumption-optimization/>

> So the speaker uses more than 3000x the power.

Wrong assumptions lead to the wrong conclusion.


-- 
Arno Welzel
https://arnowelzel.de

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#143776

Arno Welzel <usenet@arnowelzel.de> wrote:

> sms, 2024-10-22 22:05:
> 
>> On 10/21/2024 11:15 PM, Bill Powell wrote:
>>> Which uses less of the phone's battery power on long trips?
>>>
>>> Playing long podcasts with the Android speaker as the output?
>>> Playing long podcasts with a Bluetooth speaker as the output instead?
>>>
>>> Any idea?
>> 
>> Speaker wattage is about 3W.
> 
> So it draws around 1 ampere when running at around 3 volts? Really?
> 
> Maybe the theoretical output wattage is 3 watts, but a smartphons
> speaker will also just draw a few 100 mA which will be around 0.3 to 1 watts
> 
>> Bluetooth uses about 2.5mW.
> 
> No. Depending on how actually use Bluetooth, the power requirements can
> be much higher:
> 
> <https://novelbits.io/ble-power-consumption-optimization/>

That article addresses power consumption at the BLE device, not at the
smartphone powering its BT radio.  In the phone, not in the BT devices,
does the BT radio in the phone consume more power when a BT device is
connected to the phone's BT radio?  I would think the BT radio might
also go to sleep unless there was a connected BT device yet I don't
recall reading that BT lets the radio in the phone know when a BT device
is asleep, just that a BT device is connected.

>> So the speaker uses more than 3000x the power.
> 
> Wrong assumptions lead to the wrong conclusion.

But a BLE headset is not drawing power from the smartphone.  BT at the
phone is sending a radio signal, not transmitting power over the air.
The BLE device itself, like a BT headset, has its own battery.  

While the OP could turn off the BT radio in his smartphone when using
the phone's speakers, most likely he leave BT always enabled.  So, while
using the speakers, his phone is still powering the BT radio.  He is
consuming power for both components in his phone.

The OP should check how long his BT headset lasts to know if it will
last for the duration of his trips.  If not, he could use the BT headset
until its battery went dead, and then switch to the phone's speaker
assuming he doesn't care about annoying others with his noise.

Presumably the OP has a smartphone with no headphone jack.  My old phone
does.  My expectation is that a headset connected to a headphone jack
consumes less power than the speakers in the phone if only in having to
use less power to move the speaker's diaphragm less distance to effect
the same volume level in your ears.  Likely the OP doesn't have a
headphone jack, and why he asks about speakers versus BT headset.

I don't believe the OP was asking about how much the BLE device's
battery got consumed during its use, but rather the impact on the
phone's battery up-time when using its BT radio.  Since RF isn't being
used to transmit power to the BLE device, just a signal, the impact of
BT usage in the phone's power consumption would be between its sleep and
active modes.  A BLE headset would consume much less power from its
power source than a BT boombox from its power source, but neither is
using the phone's battery other than keeping the phone's BT radio
active.  

I can use a flashlight to operate a photoelectric cell that rings a
doorbell or engages a garage door opener.  The flashlight's power
consumption is not affected by the power needs of the doorbell or garage
door opener.  Only being off or on affects the flashlight's battery
life.  Obviously the longer the flashlight is on means more total
battery drain, the the devices the flashlight triggered do not affect
the drain on the flashlight in its on-state.

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#143828

VanguardLH, 2024-10-23 15:26:

> Arno Welzel <usenet@arnowelzel.de> wrote:
> 
>> sms, 2024-10-22 22:05:
>>
>>> On 10/21/2024 11:15 PM, Bill Powell wrote:
>>>> Which uses less of the phone's battery power on long trips?
>>>>
>>>> Playing long podcasts with the Android speaker as the output?
>>>> Playing long podcasts with a Bluetooth speaker as the output instead?
>>>>
>>>> Any idea?
>>>
>>> Speaker wattage is about 3W.
>>
>> So it draws around 1 ampere when running at around 3 volts? Really?
>>
>> Maybe the theoretical output wattage is 3 watts, but a smartphons
>> speaker will also just draw a few 100 mA which will be around 0.3 to 1 watts
>>
>>> Bluetooth uses about 2.5mW.
>>
>> No. Depending on how actually use Bluetooth, the power requirements can
>> be much higher:
>>
>> <https://novelbits.io/ble-power-consumption-optimization/>
> 
> That article addresses power consumption at the BLE device, not at the
> smartphone powering its BT radio.  In the phone, not in the BT devices,
[...]

This article was just an example to illustrate some real world numbers.

Even with BLE it can happen, that a device can draw an *average* power
of more than 18 mW and not just 2.5 mW. And "device" is also the
Smartphone of course.

And when BLE is already using 18 mW in some situations, regular
Bluetooth does not need *less* power than this - the reason for BLE was
to *save* power - thus the name "Bluetooth Low Energy".


-- 
Arno Welzel
https://arnowelzel.de

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#143764

In comp.mobile.android, on Tue, 22 Oct 2024 02:15:46 -0400, Bill Powell
<bill@anarchists.org> wrote:

>Which uses less of the phone's battery power on long trips?
>
>Playing long podcasts with the Android speaker as the output?
>Playing long podcasts with a Bluetooth speaker as the output instead?
>
>Any idea?

No, but I have 3 more questions.  

If you leave your bluetooth on all the time, how much does it use when
it's transmitting a signal versus when it's doing nothing?

Does it use more to transmit music than talk?  
                 To transmit loud music than soft music? 

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#143769

micky <NONONOmisc07@fmguy.com> wrote:
> In comp.mobile.android, on Tue, 22 Oct 2024 02:15:46 -0400, Bill Powell
> <bill@anarchists.org> wrote:
> 
>> Which uses less of the phone's battery power on long trips?
>> 
>> Playing long podcasts with the Android speaker as the output?
>> Playing long podcasts with a Bluetooth speaker as the output instead?
>> 
>> Any idea?
> 
> No, but I have 3 more questions.  
> 
> If you leave your bluetooth on all the time, how much does it use when
> it's transmitting a signal versus when it's doing nothing?
> 
> Does it use more to transmit music than talk?  
>                  To transmit loud music than soft music? 

Look at the link shared by Qilne. The differences are likely unmeasurable. 

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#143784

On 2024-10-23 05:32, micky wrote:
> In comp.mobile.android, on Tue, 22 Oct 2024 02:15:46 -0400, Bill Powell
> <bill@anarchists.org> wrote:
> 
>> Which uses less of the phone's battery power on long trips?
>>
>> Playing long podcasts with the Android speaker as the output?
>> Playing long podcasts with a Bluetooth speaker as the output instead?
>>
>> Any idea?
> 
> No, but I have 3 more questions.
> 
> If you leave your bluetooth on all the time, how much does it use when
> it's transmitting a signal versus when it's doing nothing?
> 
> Does it use more to transmit music than talk?
>                   To transmit loud music than soft music?

The later, no.

-- 
Cheers, Carlos.

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