Power Drain

The E72 battery driver functions do not deliver drain and temperature, but the backup battery voltage is reported. The measured drain (amperemeter) is (rough values):

• 60 mA display visible - no keyboard lights
  
• 90 mA lowest Light - with keyboard lights
  
• 110 mA more
• 120 mA normal
• 130 mA high
• 150 mA highest
• BT creates peaks ~ 10 mA on top roughly once per second
• WiFi creates peaks ~60 mA similar rate as above
• power off still drains the battery to charge the backup battery but only a few µA (micro Ampere)