Released on September 19, 2014, this 4.7" screen iPhone is the smaller version of the iPhone 6 Plus.

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iPhone battery replacement not much better than old battery

Anyone feel like the ifixit replacement isn't that much better than the old iPhone battery? I recently replaced my 2 year old iPhone 6 battery and it doesn't seem to last any longer.

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Do you use car chargers or aftermarket chargers with the iPhone?


Have you tried recalibrating after installing the new battery?


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This is gonna be dependent on a few things. Where did you get the battery? Like they said, are you using after market/car chargers? How often are you on your phone? I literally just replaced the battery on my 6S two days ago. Yesterday I was constantly on my phone. The entire day! Was the battery life good? Not really. Had to charge it in the middle of the day

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For clarification I'm replaced the battery with the ifixit kit. I use aftermarket chargers. And I have recalibrated the battery twice by draining to 9% and fully charging.


@bew47 did you test the condition of your original battery before replacing it? Sometimes we think the battery is degrading but it's really just our increased usage that makes it appear weaker. A battery needs to be above 80% of its design capacity. Once you get below 80%, it will behave erratically, shutting down when it says 40% for example. However, if your battery is at 85 - 90%, it will be hard to differentiate from a replacement battery. You can use tools like coconutBattery for Mac or 3uTools for Windows.


It's the Chargers he's using. Haha iPhone thinks I'm talking about football


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