ESP8266 Community Forum

- Mon Sep 12, 2016 2:44 am #54936 Is there any solution for let ESP8266 working 600hrs only with 3V battery??

- Mon Sep 12, 2016 6:03 pm #54986 According to http://www.esp8266.com/wiki/doku.php?id=esp8266_power_usage, when fully powered on the ESP8266 draws 60-200mA (Depending on whether it's transmitting, and how far) and standby modes are available that consume from 1mA down to tens of microamps. When in standby mode the ESP8266 is limited in what it can do - for example, you can't run a web server in standby mode.

If you power your ESP8266 from a pair of AA batteries, they'll provide around 3000 milliamp-hours. So your circuit could last for 3000 hours on such batteries if you can make it use only 1mA by using one of the sleep modes - but it's only enough for 15-50 hours active operation.

If your product has enough space for the equivalent of 80 AA batteries, it could operate in active mode for 600 hours even with the highest power transmission. If you don't want to use that many batteries, you'll need to either use sleep mode or find some other power source (maybe a solar cell, if not the mains?)

- Tue Sep 13, 2016 12:26 am #54995 Thanks for your kind explanation. Actually we found 200hrs i/o 600hrs is enough for our application. We are going to use it for alarm clock for children. Mother will communicate with her child in the morning. We estmate 30minutes a day x 365days =182.5hrs.
Therefor the space for battery is limited, in this case what is the best solution, please kindly let me know.Thanks