Has the FP6 auto battery calibration

Discuss The Products
1

I have seen my fp6 do it as well. And I have read it before in general oabout phones with similar function. I am sorry, I do not have a source.

But only Fairphone themselves will know for sure.

2

I have found that Apple does this is.

“If you have Charge Limit set to less than 100 percent, your iPhone will occasionally charge to 100 percent to maintain accurate battery state-of-charge estimates.”

3

Apple is not Android, is not Fairphone. I dont use the charging limit, however I doubt the FP6 has this integrated, as I would assume FP would mention this somewhere.

So when you have seen your FP6 doing this, was it maybe turned-off when you charged, because in this case the setting is not active.

4

Maybe from this thread:

5

This topic is about a bug

6

No it is not indeed. But it is an example of an other phone with this similar behavior.

So if a phone with a charge limit sometimes charges 100% it is probably normal behavior. If a phone with a charge limit always charges 100% then something else is happening.

The topic that mike_1312 links to is indeed about a bug. But in that topic chantoine has this behaviour with a pixel phone (charge to 100% dispite charge limit).

Also in that topic Ignacio has experienced once that the phone charges 100%

7

To not further discuss in the update topic.

So far there is no official evidence for this and I assume to test one would have to always use charging limit and never charge while turned off, as this deactivates the setting.

8

Good to make it into a separate topic.

Can you include the earlier posts from abitnner (with original question) and the responses of you, Ignacio and myself as well? Then all the information is here in this topic.

Sorry, i see now that there is a link in the first post to the original topic :slight_smile:

9

The chatbot of Fairphone wasn’t of any help. So i made a ticket with the question. I haven’t found a way to just send an e-mail. I will post the answer when it comes.

10

@abittner and all. I got a reply from Fairphone. Direct copy paste:

xxx (Fairphone (Europe))

Nov 4, 2026, 11:00 GMT+1

Dear Arjen,

My name is xxx from the support team. Nice to e-meet you :).
Thank you for supporting Fairphone.

Yes, it occasionally charges to 100%. This is normal and intentional.
Here is why it happens:

  1. Battery recalibration (main reason): If a battery only ever charges to 80%, the software eventually loses track of how full it actually is. Charging to 100% every couple of weeks resets the sensor so your battery percentage stays accurate.
  2. Charging while switched off: The 80% limit is controlled by Android. If your phone is completely turned off while plugged in, it will charge all the way to 100%.
  3. Accidental override: Tapping the charging notification on your screen can temporarily tell the phone to bypass the limit and charge fully for that session.

Once it completes a full charge to 100%, it will automatically go back to stopping at 80% next time.

Please let me know if you have any additional questions.

Kind Regards,
xxx

11

Thanks for asking and sharing :smiling_face:

12

Good to know, I trust the implementation a little more now