I am using a ---
Arduino Pro Mini 328 - 3.3V/8MHz
With a ---
SparkFun RFM69 Breakout (915MHz)
I am powering it with 4 AA batteries connected to the RAW input.
Under normal operation it should only transmit or receive about six times a day.
My batteries seem to have gone dead in two weeks or less.
I had the system in an outdoor electrical box which got quite wet inside
and blew one of my Arduino minis which I replaced.
Might this be the cause?
What should I expect for battery life?
Is there a better way?