While the ESP32 does have a high inrush current, its ULP coprocessor is quite capable, drawing only 12µA@3.3V during Deep Sleep. I have a fleet of AA-powered ESP32 devices at home that last 6–12 months, plus some solar-powered ones that run indefinitely.
If you didn't mind sharing, I'd like to hear more about your use case. I'm assuming these would be things like temp/humidity sensors and such. I suppose you'd want to avoid wake-ups and radio use as much as possible.
I've not gotten around to trying, but I assume using deep sleep while waking up to batch send data with infrequent updates would be key.
Comments
ESP32 never was good for any powersaving applications.
While the ESP32 does have a high inrush current, its ULP coprocessor is quite capable, drawing only 12µA@3.3V during Deep Sleep. I have a fleet of AA-powered ESP32 devices at home that last 6–12 months, plus some solar-powered ones that run indefinitely.
If you didn't mind sharing, I'd like to hear more about your use case. I'm assuming these would be things like temp/humidity sensors and such. I suppose you'd want to avoid wake-ups and radio use as much as possible.
I've not gotten around to trying, but I assume using deep sleep while waking up to batch send data with infrequent updates would be key.