Heltec CubeCell - part 2

[bluejedi]

But what board were you talking about then, the HTCC-AB01?

I did some measurements on my HTCC-AB01 almost 2 years ago and did not notice a higher than documented/expected deep sleep current of the board. I don’t remember the battery voltage of the LiPo used but for measurements I usually use fully charged batteries.

Heltec CubeCell - part 1

I did a small test with the standard LoRaWAN.ino example. When powered by LiPo battery via the battery connector the CubeCell board uses only 8.5 uA during deep sleep! When externally powered directly on the 3.3V pin, either by LiFePO4 (3.2V nominal) or by two Alkaline batteries (2 x 1.5V = 3.0V nominal) the CubeCell board uses only 3 to 3.5 uA in deep sleep.