There is no fuel gauge chip on the Xenon and Argon. You can, however, read the battery voltage to determine the approximate charge level:
https://docs.particle.io/reference/device-os/firmware/xenon/#battery-voltage
Particle Battery Voltage
There is no fuel gauge chip on the Xenon and Argon. You can, however, read the battery voltage to determine the approximate charge level:
https://docs.particle.io/reference/device-os/firmware/xenon/#battery-voltage
Particle Battery Voltage