@marekparticle
BTW, if this is not duplicatable, I’m happy to ship a couple of Argons exhibiting this behavior if it helps.
I figured out the difference. I was originally powering by Li+, which is how the current measurements were done for the datasheet.
I tried powering by VUSB, as I finally noticed that’s how you were powering it, and I also get 932 µA. This is not entirely unexpected because when powering by VUSB, the main voltage regulator needs to be powered. When running at 3.6V, it can be bypassed.
Wow, that is a huge find. Thank you @rickkas7. I’ll test out this morning in the lab and feel confident that I will reproduce your results. Now to work on our device design to use the 3.7V input rather than the 5 VUSB.
@iitgrad, would your project allow you to include the Li-Po in the design?
If so, that’s possibly the only change you’d need to make.
Hi @Rftop. Yes, its actually going to have to. We have to run buried in the ground for 4 years on battery power so will make this work. Meeting with the team today on this. And just confirmed the sleep current in the lab this morning. It is a beautiful thing. Thank you @rickkas7 for all your help!
Out of curiosity, what battery are you planning on using? If you can't say (in the open), I understand.
Thanks!
We are using 3 AA Energizer Ultimate Lithium in series and then this 3 pack x 3 in parallel which gives us about 9000 mAH of capacity. Our device sleeps for 30 minutes, then wakes for less than a minute to do measurements and transmit the data via a separate LoRa module. We have been very happy with these batteries.
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