Check hardware battery pct in macOS

readme.md

This shows you the hardware battery charge, purported to be more accurate than the percentage reported in the menu bar or what you see when you type pmset -g batt

https://apphousekitchen.com/feature-explanation-hardware-battery-percentage/

batpc.sh

#!/bin/bash

current_capacity=$(ioreg -l | grep -o '"CurrentCapacity" = [0-9]*' | awk '{print $3}')
max_capacity=$(ioreg -l | grep -o '"MaxCapacity" = [0-9]*' | awk '{print $3}')
design_capacity=$(ioreg -l | grep -o '"DesignCapacity" = [0-9]*' | awk '{print $3}')

if [[ -n "$current_capacity" && -n "$max_capacity" && "$max_capacity" -ne 0 && -n "$design_capacity" && "$design_capacity" -ne 0 ]]
then
    percentage=$(echo "scale=2; ($current_capacity / $max_capacity) * 100" | bc)
    echo "Battery charge: $percentage%"

    percentage=$(echo "scale=2; ($max_capacity / $design_capacity) * 100" | bc)
    echo "Battery health: $percentage%"
else
    echo "Error: Could not extract battery data."
    exit 1
fi