Possible to check by a firmware/software whether Electron is powered only by battery?

[rickkas7]

I'm particularly fond of this answer. As it turns out, it's harder than you'd think to figure this out, for reasons explained in this thread:

When is Electron Powered By Battery

This version is much better. It uses the BAT_INT_PC13 interrupt to detect the rapid switching between fast charge and charge done when there is no battery. It’s much more efficient and doesn’t require being called from loop. You just initialize it once and use the getHasBattery() method to find out if there is one. #include "Particle.h" /** * Simple class to monitor for has power (USB or VIN), has a battery, and is charging * * Just instantiate one of these as a global variable and call se…