Monitor battery charge in hid keyboard example

[bscdb]

The hid keyboard example includes the battery service. But how does it work? I would like to monitor the battery charge. After I use the voltage divider, to which AIN pin should I connect? Where will the battery charge be displayed?

[awneil]

bscdb said:

I would like to monitor the battery charge

Note that battery voltage is not necessarily a good indicator of battery charge.

In particular, for lithium batteries, battery voltage is a very poor indicator of battery charge.