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Model A2159, EMC 3301. A refresh of the entry-level 13" MacBook Pro. Available in Silver and Space Gray. Released July 2019.

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Calibration or replacement battery issue?

I recently used the iFixit kit to replace a swollen battery in a 13" 2019 MBP (2 TB ports). The procedure went well and I performed the recommended calibration. I just noticed that the battery monitor in iStat Menus is reporting only a Health of 91%, Design Capacity of 4790mAh and Current Capacity of 4355 mAh. The product page for the battery claims a tested and guaranteed capacity of at least 5100 mAh. Did I receive a substandard battery or is the calibration just off?

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I'd recommend resetting the SMC, then letting the battery charge to 100% and discharge to around 10%, then charge it up to 100% again. After doing that check the reading, and if it's still below what it's supposed to be I think you can conclude that it's a substandard battery. Alternatively you can check the health using a program like coconutBattery. Good luck!

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I finally got a chance to try this today. Unfortunately nothing changed, all the numbers are the same (except of course for the cycle count). Guess I will need to contact iFixit support.

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