On February 25, 2024 at 11:27

It took 5 days for my Heltec Lora v3 router node to use up 6.6Wh of one 18650 cell at 5% air utilization rate (one telemetry message per minute). That brings it to 6.6W / 5days /24h or 0.055W (15mA@3.7V) on average.

Importantly, this node was also powering a sensor which was doing the power measurements every minute.

Now I'll be doing a reference measurement without the INA219 and with zero telemetry.