Datasheet

You still have the 25mA average, but during transmit, it only uses another 20mA not 100mA

If you put the radio to sleep after transmitting, rather than just sitting in receive mode, you can save more current, after

transmit is complete, the average current drops to ~10mA which is just for the microcontroller

If you want to reduce even more power, use the Adafruit Sleepdog (https://adafru.it/fp8)library by installing and adding

#include "Adafruit_SleepyDog.h" at the top of your sketch and replace

delay(1000);

with

radio.sleep();

Watchdog.sleep(1000);

To put the chip into ultra-low-power mode. Note that USB will disconnect so do this after you have done all your

debugging!

https://learn.adafruit.com/adafruit-feather-32u4-radio-with-rfm69hcw-

module

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