How to Interface 22v battery to nRF52832

[gain]

Hello ,

I saw some examples in nordic forum in that they measured coin cell battery voltage level

how to interface 22v battery to nrf52832?

 Thanks

learn

[gain]

I measured the battery level when it is full

When battery empty it should give battery empty on RTT terminal

every time should show on RTT terminal is that battery empty or full

when battery full interrupt should rise and when battery empty interrupt should rise

Ho to approach this problem

Thanks 

[awneil]

Again, have you actually spent any time researching the topic of how to determine the state of charge of a Li-ion battery?

gain said:

Ho to approach this problem

An internet search would be the obvious place to start; eg,