nRF9151: Estimation of LTE energy consumption

RE: nRF9151: Estimation of LTE energy consumption

Achim Kraus — Tue, 17 Mar 2026 06:58:09 GMT

Not sure, what's to goal you want to achieve.

In my experience, even statically located devices will face pretty different "radio conditions" over time. Including network searches and so on. With that, the runtime from battery is rather a range. An assumption, which worked quite well over some years, is to use the consumption on mid-term to calculate long-term, e.g. the consumption since the last restart and that of the last 2 weeks to calculate a forecast combining the two. For the npm1300 there is also an AI based function to determine, how much energy is left in the battery.

An other approach I use now for a year is testing with replacing the battery (none-linear relation of voltage and energy) by a super cap., which has a close to linear function of voltage and energy ( e.g. LIB1620Q4R0407, 4V, 400F others will obviously work as well). With that you may run the device for 2-3 weeks and you will get pretty realistic numbers for the energy consumption.

RE: nRF9151: Estimation of LTE energy consumption

klaasg — Mon, 16 Mar 2026 15:20:54 GMT

Hi,

Yes we have. We don't like to use it because it does network operations and these are unpredictable. We have seen this command take a very long time.

Is there a version of the command that just gives any info it has without trying to acquire new network info?

Or a different command with the same kind of output. We already monitor the RSRP and RSRQ but these don't give reliable info for energy estimation.

Thank you!

RE: nRF9151: Estimation of LTE energy consumption

Hakon — Mon, 16 Mar 2026 15:01:26 GMT

Hello,

have you considered using the %CONEVAL command?