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In System Information, we can obtain information about the battery, e.g.:

Battery Information:

  Model Information:
    Serial Number:  D866192Q1NFFWLKE1
    Manufacturer:   SMP
    Device Name:    bq20z451
    Pack Lot Code:  0
    PCB Lot Code:   0
    Firmware Version:   702
    Hardware Revision:  1
    Cell Revision:  3241
  Charge Information:
    Charge Remaining (mAh): 8681
    Fully Charged:  No
    Charging:   No
    Full Charge Capacity (mAh): 9199
  Health Information:
    Cycle Count:    4
    Condition:  Normal
  Battery Installed:    Yes
  Amperage (mA):    -1131
  Voltage (mV): 12817
  Battery Installed:    Yes
  Amperage (mA):    -1131
  Voltage (mV): 12817

I'd like to know:

  • What does the Cell Revision field mean?
  • How are Cycle counts calculated?
Fabien Snauwaert
  • 997
  • Cycle counts has been explained here: https://apple.stackexchange.com/a/233751/119271 – Allan May 20 '18 at 14:47
  • As far as the "Cell Revision", as far as I can tell, it's a manufacturing code related to the testing and certification of the battery cells: http://www.metlabs.com/battery/un-38-3-transportation-testing-required-for-lithium-battery-safety-during-shipping/ – Allan May 20 '18 at 15:10

1 Answers1

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Every time you fully charge your macbook battery it counts as 1. to count 1 cycle you will have to charge unto 100%. That 100% can be charged in 1 time or you can charge 20% 5 different times.

Ivan Mirza
  • 11