Thingy 91X and PMIC1300 fuel gauge

RE: Thingy 91X and PMIC1300 fuel gauge

Elfving — Tue, 05 Aug 2025 08:23:06 GMT

Yeah, it won't be as accurate but should work. I guess what you need depends on your use-case.

Regards,

Elfving

RE: Thingy 91X and PMIC1300 fuel gauge

chris5555 — Mon, 04 Aug 2025 19:59:23 GMT

Since looking up on this more - I've came across this thread. I know this may not be as accuarate as the PMIC1300 but im guessing this should be sufficient for a estimate? Currently trying it now

RE: Thingy 91X and PMIC1300 fuel gauge

Elfving — Tue, 29 Jul 2025 10:45:13 GMT

I believe so. I am not that familiar with the preflashed SW but this should be it. The connetivity bridge should be flashed to the nRF5340.

The npm should also be supported by hello_nrfcloud and asset tracker, having a look at these might be helpful.

Regards,

Elfving

RE: Thingy 91X and PMIC1300 fuel gauge

chris5555 — Mon, 28 Jul 2025 17:43:56 GMT

OK I didn't realise that it was controlled by the nRF5340, is this the way on the example already flashed on the device when receiving it? Or does it calculate it in a different way?

RE: Thingy 91X and PMIC1300 fuel gauge

Elfving — Mon, 28 Jul 2025 12:30:45 GMT

Hi Chris,

That is right, it might not be configured to work with the Thingy91X by default. Though getting this working should be possible with some additional configuration. Though this can be a bit more complex in case you are not so used to the npm1300. Note that the npm is controlled by the nRF5340 onboard the Thingy91X.

Make sure that the dts of the 5340 is showing the right connections to the npm. Are you getting any particular issues?

Regards,

Elfving