ac_draw.sh

#!/bin/bash

# From: https://apple.stackexchange.com/questions/415355/is-it-possible-to-detect-the-current-power-input-on-a-macbook

ioreg -rw0 -c AppleSmartBattery |
  grep BatteryData |
  grep -o '"AdapterPower"=[0-9]*' |
  cut -c 16- |
  xargs -I %  lldb --batch -o "print/f %" |
  grep -o '[0-9.]*' |
  tail -1

charge_rate.sh

#!/bin/bash

# See also: https://apple.stackexchange.com/questions/415355/is-it-possible-to-detect-the-current-power-input-on-a-macbook

ioreg -rw0 -c AppleSmartBattery |
  grep AdapterDetails |
  grep -v AppleRaw |
  grep -o -e '"Watts"=[0-9]*'

charge_voltage.sh

#!/bin/bash

# From: https://apple.stackexchange.com/questions/415355/is-it-possible-to-detect-the-current-power-input-on-a-macbook

ioreg -rw0 -c AppleSmartBattery |
  grep -o -e '"ChargingCurrent"=[0-9]*'

system_draw.sh

#!/bin/bash

# From: https://apple.stackexchange.com/questions/415355/is-it-possible-to-detect-the-current-power-input-on-a-macbook

ioreg -rw0 -c AppleSmartBattery |
  grep BatteryData |
  grep -o '"SystemPower"=[0-9]*' |
  cut -c 15- |
  xargs -I %  lldb --batch -o "print/f %" |
  grep -o '[0-9.]*' |
  tail -1