nRF PPK2 with DUT charging via USB

[gtalusan]

Hello, I recently picked up a nRF PPK2 and I'm liking it a lot.

I have it wired in-line with a battery (1500mAh li-po) with my device under under test.  Measuring battery consumption works great, and the measurements align with my CurrentRanger and uCurrent.

My DUT can also charge the battery via a USB connector.  When I plug in the USB cable, the current measurement reported by the PPK2 goes to 0.  I'd expect this to show a reverse or negative current.  Is this a limitation of the PPK2?

Thanks!

[SwRa]

Hi George,

Glad to know that you like our products. PPK2 cannot measure negative currents and that's the reason why the measurement shown was zero.

Regards,

Swathy

[gtalusan]

Hi Swathy, thanks for the prompt reply.  Are there any consequences of having a negative current going through the PPK2?