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A comment on ESPHome. Parent comment

Re:ESPHome by asdefghyk on Thursday April 25, 2024 @01:19PM (#40160381)
Question: On a typical ESPHome device, reporting temperature (say every 15 minutes) via wireless to HomeAssistant, what battery life is possible ?
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Re:ESPHome by pcollins123 on Friday April 26, 2024 @10:17AM (#40169755)
With a $10 18650 rechargeable battery you could probably get a couple months on a single charge. Esphome can deep sleep between readouts: https://esphome.io/components/deep_sleep.html Deep sleep pulls the power draw down to 50uA.

Of course if you also wire a solar charger next to the battery… maybe it will never run out.

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