How to get battery voltage if there is regulator in the custom board?

[kfcube]

Hi,

My 52832 custom board use chargeable battery which is 3.7V. The board has a regulator to lower down the voltage to 3V.

I tried to get voltage using ADC, but I always got about 2.98V even though the battery is out of power due to the regulator.

Is there anyway I can get the battery voltage?

Thanks,

[Kazi Afroza Sultana]

Hello,

You can try to connect a physical battery to the ADC pin trough a voltage divider, and measure the actual battery voltage, not the VDD input to the SADDC. We have a blog about measuring the voltage of Lithium battery, you can read (+) Measuring Lithium battery voltage with nRF52 - Blogs - Nordic Blog - Nordic DevZone (nordicsemi.com).

Thanks.

BR

Kazi 

[kfcube]

Got it. thanks.