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Groups > comp.mobile.android > #143793
| From | "Carlos E.R." <robin_listas@es.invalid> |
|---|---|
| Newsgroups | comp.mobile.android |
| Subject | Re: Which uses less power |
| Date | 2024-10-23 22:40 +0200 |
| Message-ID | <5i3oukx04j.ln2@Telcontar.valinor> (permalink) |
| References | (1 earlier) <vf90hl$1kfmp$2@dont-email.me> <vf95h3$1lghp$1@dont-email.me> <78zxo4y77ds7.dlg@v.nguard.lh> <g0dnukx8bu.ln2@Telcontar.valinor> <2szr1kqz0zk$.dlg@v.nguard.lh> |
On 2024-10-23 19:21, VanguardLH wrote: > "Carlos E.R." <robin_listas@es.invalid> wrote: > >> On 2024-10-23 03:04, VanguardLH wrote: >>> Chris <ithinkiam@gmail.com> wrote: >>> >>>> 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? >>> >>> Do you to refute? >> >> I do not refute nor corroborate, so I would like a source either way :-) > > Me, too. I'd like to know the basis for both claims. Alas, there are > so many variables involve with unknown phones and BT/BLE devices > employed that the results are unpredictable. > > BLE devices go into low-power sleep mode when inactive. Batteries in > BLE devices are typically much smaller (far less capacity) than the > battery in a phone. But that's for BLE devices. Unless you turn it > off, does the BT radio in the phone ever go into sleep mode? No, not > when the phone itself goes into sleep mode, but if the BT radio alone > will go into sleep mode. Low power BT does not transmits during silence, AFAIK. > > My reading of the OP's inquiry is that he is asking about power drain on > the phone's battery when using its speakers versus using the BT radio in > the phone to a BLE device. BT isn't transmitting power, just a signal, > but the longer the BT radio is active the more power it consumes > assuming the BT radio in the phone ever goes into low-power sleep mode. > From what I've found, the BT radio in the phone is either on or off, not > in a low-power sleep mode (that's just for BT devices). > > Since the OP wasn't asking about battery drain on the BT headset device, > but on the impact to the phone's battery when using BT, I did find: > > https://www.seinxon.com/blogs/blog-posts/does-bluetooth-drain-your-battery > > The article doesn't give a bio on Robert Triggs, or which of his > articles is cited. Might be this guy: > > https://www.soundguys.com/author/roberttriggs/ > > Note the OP only mentioned "Bluetooth". Not which version of it. He > didn't mention his phone, so we cannot lookup what BT versions it > supports. We don't which versions of BT the BT headset uses, either. Someone mentioned an app to measure power drain. > > Batteries lose capacity (coloumbs) over time even when not use, but more > when in-circuit than sitting on a shelf. Be interesting to know if loss > of capacity in the phone's battery from BLE radio usage outstrips the > natural drain of the phone's battery. > > Also remember that it isn't just the BT radio in the phone that is > consuming power. The CPU needs power to control the radio and the radio > protocol stack. There is also chatter between the BT radio in the phone > to the BT device. Once bonded to a BT device, the two endpoints need to > keep the channel alive by periodically passing packets even when no > traffic is being sent to the endpoints. > > https://www.link-labs.com/blog/bluetooth-zigbee-comparison > > That says the BLE radio consumes 10 to 100 mW while traditional BT > consumes 1 W: 10 to 100 times difference. Again, we don't know which BT > is involved for the OP. It also mentions packets are sent in bursts > using BLE, and the BLE device sleeps between bursts (but not if the > phone's BLE radio sleeps between bursts). > > So, then to compare BLE radio power consumption in the phone (to a BLE > device) versus using the phone's speaker power consumption, there are > several variable when using the speakers, like the volume level at the > speaker. Playing at louder volume means more power consumed from the > phone's battery. While phone speakers may be rated 1.5 to 3W (for > output power), input power would be higher (no speaker is 100% > efficient), but again affected by the volume level. However, who > listens to music by putting their phone's speaker next to their ear to > play at low volume? Earbuds don't need as nearly as much power to > produce the same volume level in the ear as opposed to audio from the > speaker in the phone. Heavy bass uses more power. More energy to push > the cone further. Speaker sensitivity affects power consumption: a > lower-power rated speaker that is more efficient can produce the same > volume as a higher-power rated but less efficient speaker. Headphones > are more energy efficient than speakers, but the OP probably does not > have a phone with a headphone jack, and why he asks about BT headphones > or ear buds. The bigger the speaker, the more energy to move the larger > mass. Design, components, and usage affect power consumption of the > speaker(s). > > Looks like the phone's internal speaker draws about 8 mW, on average, > but the variables above can produce varying results. Meanwhile the BLE > radio in the phone will consume 10 to 100 mW of power which looks more > than for the internal speaker; however, you'd have to know how often are > the bursts and sleeps to average out or RMS the power consumption over > the time the BLE device is active. There are no bursts with traditional > BT, so that type of radio in the phone would likely use nearly or more > power than the internal speaker. > > Besides, how many speakers are there in a phone? One. So forget about > stereo (left vs right) spatial differentiation in audio quality. With > headphones (via jack or BT), you get stereo. No, my phone does have stereo speakers, but you have to turn it 90 degrees (to horizontal). > > As others mentioned, probably the best way to gauge power consumption to > compare internal speakers against whatever BT version is used to the > BT/BLE headset is to monitor battery consumption. Play the same media > for the same length of time, like 1 to 4 hours, once using the internal > speaker (with BT turned off) and another time using the BT/BLE headset. > A lot depends on volume level, density of the media, whether BT or BLE > is used, efficiency of the speaker and circuit design. Start with a > fully charged phone battery each time to obviate the natural drain on > the battery even when idle. The OP needs to determine how his > unidentified phone with its speakers fairs against using a BT/BLE > headset. There are a LOT of variables in a vague scenario. -- Cheers, Carlos.
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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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