Just ran across this myself! Glad I checked the schematic and forum rather than trusting the symbol. Quick question, why do we need a voltage divider? Can I not just wire the battery + into a GPIO with ADC and read the voltage? Is it just because the voltage can go over 3.3?
And if a voltage divider is required, what resistor values should be used? I assume we’d want the resistance to be high to minimize power draw, but is there a limit?