Why do BT headphones drain more battery during calls than when listening to general media (music, YouTube etc.)

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I’ve noticed that during calls battery on my Bluetooth headphones goes down significantly faster. Considering that Active noice cancellation also uses microphones I don’t suppose it’s the mics that drain the battery during calls?

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2 Answers

Anonymous 0 Comments

The Bluetooth has to transmit and well as receive during calls, when ANC is just processing. The transmit is what’s adding to the power load and increased battery draw.

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