AI Office Technology
Battery Life Trade-offs in Always-On AI Listening Devices
Always-on wake word detection draws continuous power — here’s how manufacturers balance responsiveness against battery life.
Published 2026-02-24 · AI Office Technology
Why Always-On Listening Costs Battery
Continuously running even a lightweight wake word model draws meaningfully more standby power than a push-to-talk design, since the microphone and detection chip never fully sleep.
Design Choices That Help
Low-power dedicated wake word chips (rather than running detection on the main processor) and adjustable sensitivity/duty-cycle settings both help manage this trade-off — worth discussing explicitly with your manufacturer if battery life is a primary marketing claim.
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