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Question: New Battery only 95% of Design Capacity

I just had a new battery installed yesterday. Has gone through one cycle. I had it tested and it is only 95% of design capacity. Is this normal or should it be closer to 100%.

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Well, Coconut is pretty good, so I'd say the battery is really at 95%. Be sure to measure right after charging it to 100%. If it consistently reads 95% capacity contact Apple and have them check it.

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Mar 14, 2018 12:44 PM in response to HardBackStrider In response to HardBackStrider

OEM or aftermarket? And how are you determining the capacity relative to design capacity?


One of the things I would suggest is to make sure the phone is warmed up. I put it in my pocket and the capacity seems to go up with the tools that I use. It's just one of those odd things.

Mar 14, 2018 12:44 PM

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Mar 14, 2018 1:18 PM in response to HardBackStrider In response to HardBackStrider

Hello HardBackStrider,

Thanks for using Apple Communities.

If you have replaced it with a new original part, something seems to be wrong. Apple batteries usually keeps its healthy for a long number of cycles. If you contact AppleCare they can run a diagnostic that shows the real healthy of your iPhone.

With regards,
Alefe Bruno

Mar 14, 2018 1:18 PM

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Mar 14, 2018 1:36 PM in response to HardBackStrider In response to HardBackStrider

HardBackStrider wrote:


I just had a new battery installed yesterday. Has gone through one cycle. I had it tested and it is only 95% of design capacity. Is this normal or should it be closer to 100%.

There are several possibilities.

  • The way you are measuring capacity may be faulty. Most apps that measure it are not that accurate.
  • If Apple did not replace the battery there is no way of knowing how good the new battery is. All you know absolutely for sure is that it is not an Apple replacement battery, because Apple does not provide batteries to 3rd party repair shops.
  • Did you calibrate the battery monitor? Drain the battery to below 5%, then charge for 4 hours with the wall adapter. Note that you only need to do this once with a new battery, and only with 3rd party batteries, not batteries replaced by Apple.

Mar 14, 2018 1:36 PM

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Mar 15, 2018 8:20 AM in response to HardBackStrider In response to HardBackStrider

So i keep the tip for contacting AppleCare, so they can run a diagnostic that shows the real healthy of your iPhone, including the battery chemical status. If you're at US, the number is 1-800-275-2273.

An Apple Store or an Apple Authorised Service Provider are also able to run this diagnostic.

Mar 15, 2018 8:20 AM

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Mar 15, 2018 8:22 AM in response to HardBackStrider In response to HardBackStrider

Well, Coconut is pretty good, so I'd say the battery is really at 95%. Be sure to measure right after charging it to 100%. If it consistently reads 95% capacity contact Apple and have them check it.

Mar 15, 2018 8:22 AM

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Question: New Battery only 95% of Design Capacity