Is it possible to read the battery percentage of the device connected by USB-C?

[DPena.1]

We want to develop a USB-C charger and we need to check the battery charge percentage of the device connected to the USB-C charger. The connected to de USB-C device can be a Smartphone, Tablet or PC.

In our charger we are going to integrate a processor and we need to read the battery percentage of the device that is being charged

Is it possible to read the battery percentage of the device connected by USB-C? Any ST reference can do this job?

[NBALL]

Hello

Battery_status message can provide SOC of sink.

The info will be available only on PD3 sink (designed with version >= PD3.0 v1.2).

PD2 devices don't have such message.

Those informations are handled in dpm_user part and need to be updated by user/customer.

Best regards

[DPena.1]

Hello NBALL,

Thanks for the info. Do you know of any component that I can integrate into my design that will allow charging and communication with PD3.0 v1.2?

Best regards,

[NBALL]

Hello

In SW packages linked to stusb1602, there is compilation switch which can enable battery message feature: please see in the QuickStart document of the package you will select.

Link to the page is https://www.st.com/en/interfaces-and-transceivers/stusb1602.html#tools-software

Best regards

[AdAms2]

Hi DPena,
I know it's been a will since you posted this. I'm trying to implement the same as you, can you give me your feedback and did you manage to make it function? 

Best regards