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How long will NodeMCU run on battery?
Since the standard voltage regulator on the NodeMCU boards is only a linear one, the board will take 80 – 90 mA @ Vin. So that’s 480 – 540 mAh in 6 hours.
How to battery power NodeMCU?
The output from the Voltage regulator is connected to the Vin pin of NodeMCU & GND is connected to GND. Hence you can power up the module using 9V/12V DC Adapter or by 9V Battery. On the other hand, if you don’t want to power up the NodeMCU using DC Adapter, you can use 3.7V Lithium-Ion or Lithium Polymer Battery.
How much power does a NodeMCU use?
Average current consumption of NodeMCU: 39.58.
Why is NodeMCU running on a low power battery?
The two immediate suspects are the power regulator, and the UART, as discussed in the forum here. The first step is to target the power regulator. The AMS1117 LDO draws a quiescent current of “typically” 5mA. To prevent this, it may be sufficient to lift just pin 1. However, I chose to remove the whole chip to free up space for later.
How to power NodeMCU Devkit using a battery?
Since batteries deliver no stable voltage over time you need to place some kind of buck/boost converter (step-down/step-up) between the battery and the module. You could of course also target the VIN pin which expects 5V but that would be less efficient if you used a LiPo battery.
How much power does NodeMCU use in deep sleep?
Unfortunately, with all this added convenience comes the drawback of added power consumption, which continues even when the ESP8266 is in deep sleep. I measured 18mA to the NodeMCU board while the ESP8266 was in deep sleep mode – orders of magnitude more power hungry than I was looking for.
Is it possible to run NodeMCU on WiFi?
Using Wi-Fi is a convenient way to link your newly created IoT device into your existing IT infrastructure – including cloud services – but it also has a drawback. Wi-Fi’s demand for power usually makes battery operation impractical for any real deployment.