Applescript for show a alert when the battery is above 80% or under 40% load

readme.md

With Homebrew (and wget)

wget https://gist.github.com/eseceve/5485752/raw/902958d64c4e764660a43a096f05e113e0ed2f6a/batteryAlert.plist
mv batteryAlert.plist ~/Library/LaunchAgents/
wget https://gist.github.com/eseceve/5485752/raw/9f926d66f9f44b13425d183e4e903a90a1c585c8/batteryScript.applescript
mv batteryScript.applescript /etc/
launchctl load ~/Library/LaunchAgents/batteryAlert.plist

Without Homebrew

• copy batteryScript.applescript to /etc/batteryScript.applescript
• copy batteryAlert.plist to ~/Library/LaunchAgents/batteryAlert.plist
• *reset your mac or run launchctl load ~/Library/LaunchAgents/batteryAlert.plist in your terminal

batteryAlert.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>KeepAlive</key>
    <false/>
    <key>Label</key>
    <string>batteryAlert</string>
    <key>LowPriorityIO</key>
    <true/>
    <key>ProgramArguments</key>
    <array>
      <string>/usr/bin/osascript</string>
      <string>/etc/batteryScript.applescript</string>
    </array>
    <key>RunAtLoad</key>
    <true/>
    <key>ServiceDescription</key>
    <string>Battery Alert</string>
    <key>StartInterval</key>
    <integer>30</integer>
  </dict>
</plist>

batteryScript.applescript

set Cap to (do shell script "ioreg -w0 -l | grep ExternalChargeCapable")

tell Cap to set {wallPower} to {last word of paragraph 1}

set Cap to (do shell script "ioreg -wO -l | grep Capacity")
tell Cap to set {Available, Max} to {last word of paragraph 2, last word of paragraph 1}

set percent to round (100 * Available / Max)

if wallPower = "Yes" then
  if percent >= 80 then
    # sacar cargador
    tell application "Finder"
      activate
      set dialog_text to "Batería cargada en un " & percent & "%. RETIRAR cargador"
      display dialog dialog_text
    end tell
  end if

else
  if percent <= 40 then
    # cargar
    tell application "Finder"
      activate
      set dialog_text to "Batería cargada en un " & percent & "%. CONECTAR cargador"
      display dialog dialog_text
    end tell
  end if
end if