nodemcu battery monitoring ?

[nikki81]

I am just starting to build my outdoor sensors and was wandering if there is any way to report the battery level ?

Thanks Nikki

[nikki81]

is it possible to use a INA219 sensor ?

[grovkillen]

Yes, but battery percentage need to be calculated with formulas. If that is needed.

More good information is found here:
https://www.powerstream.com/battery-cap ... ations.htm

[nikki81]

Thank you I have been doing some reading and i think ive found a simple way off achieving what i need. Is it correct saying I can use the Analog Input device and connect a resistor of 100k between A0 and the battery + ?

Thanks Nikki

[grovkillen]

I'm no expert but I guess that's one way of doing it but do you plan to use more analog signals? If not I'd go with the INA219.