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From: Arno Welzel <usenet@arnowelzel.de>
Newsgroups: comp.mobile.android
Subject: Re: Which uses less power
Date: Wed, 23 Oct 2024 13:21:15 +0200
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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