Re: Which uses less power

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