I designed a ESP32 and made sure the device runs on low power mode whenever not necessary and was successfully able to reduce the average current consumption to less than 10mA.
To run the setup I used a 18650 Li-ion battery and a boost convertor to 5V of the ESP32. I calculated the device to run for around 50 days even in the worst case scenario.
But, my device died in 4 days because I was ignorant enough not to consider current consumed by the Boost converter which is around 40mA.
Can someone tell me if my idea to use a boost converter was wrong or if I have a cheap Boost converter.(Link Below)
Any suggestions to run my ESP32 with a 3.7V Li-ion will be highly appreciated. I dint want to use 2 batteries and use a buck converter because I don't want introduce a BMS into the setup.
@srnet@jremington.
Thank you very much for your replies. They definitely are great suggestions.
Could you suggest me something that can boost the voltage to 5V instead of reducing it to 3.3V because I also run a 5V high current devices connected across the booster through a relay .
Indeed. You can spend less and learn why… you shouldn’t cheap out on these.
It is advised to confirm the current and voltage in the final use circumstances. In my experience, the specs are always aspirational, best to be conservative and have a little more regulator than you need.
Only more so to a quite alarming extent with cheap units.
I am using this for Waveshare 9.3 inch display with IT8951 driver(which uses 5V input).
The ESP32 comes online every 2 minutes during day and every hour during night, checks for any changes. If there are any changes, updates the screen and sleeps for the rest of the time.
When it is running the setup uses around 100 - 150 mA.
When it is in deep sleep mode, it only uses 0.5mA which is why I want to get a voltage converter that runs on ultra low current.
