Yes, but it could do some things like sending an emergency message through an admin channel. Or it could lower the output power by 3 dB. Or it could ignore packets not coming from the admin node and so on. Also, shuting down the node at a certain undervoltage may save the life of the battery cell or increase its lifetime drastically.
Also it would be useful that the advanced user could set the voltage limits such as “100%” or “0%” because some will prefer LiFePo4 (100% = 3.6 V) over Li-Ion (100% = 4.2 V)…
However, meanwhile i temporary added the cable bridge and some Cs and run the module from a 3.3 V power supply:
The current measurement is disappointing. It is permanently just about 1 mA lower then together with the 19007. So the current peak obviously comes from the module itselfe, not from the blinking LED.
Good to know.
BTW even when the 4631 is shut down, it still consumes about 0.55 mA! So even then an empty battery becomes further discharged! And if the 4631 is shut down and connected to the 19007 it even continues to consume 2 mA. So, offline still consumes 50% of the online state.
To be honest, that’s not what i expected when i read "Ultra-Low Power Consumption 2.0 uA in sleep mode”
Could it be that someone translating from chinese to english does not know to differnciate between aA, fA, pA, nA, µA, mA, A, kA ?
Anyway, a TTGO Lora V2.1-1.6 consumes 11 mA, permanently. And the RAK4631 consumes just 4 mA. But i thought that the difference is much higher…
At least we see that the 4631 CAN indeed be run without the 19007 from 2.0 V to 3.6 V, favouring a LiFePo4 cell, while saving at least 1 mA or 24 mAh per day.
I see, external electronics are necessary!
Q.E.D.
