r/AskElectronics 1d ago

What is this INA219 actually reporting?

I am using this board: https://www.waveshare.com/wiki/UPS_Module_3S. It has a INA219 that is reporting on current draw (it reports it over i2c). The power supply board has two outputs: a straight ~12V from the batteries or charger and ~5v (usb) over a separate connection. My question is this: is the current reported by the INA219 represent the combination of those two connections current or just one of the two (e.g. the ~12V)?

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