Firstly apologies if this is in the wrong section, I did try to find one that suits what I am looking to-do.
I have an Arduino Nano being driven from a 9v battery (the typical square battery). I am driving a small oled screen, Humidity sensor, Temp Sensor & RTC, however at the moment the battery doesn't last very long. I was hoping to find some advice out about how I can reduce the Arduino's power consumption and generally extend the life of the battery as much as possible.
any help would be really appreciated.