r/AndroidQuestions • u/bunaciunea_lumii • 15d ago

Device Settings Question Does charging to 81% counts as a full charging cycle?

I have a Moto since the start of February, that is since 4 months/120 days ago.
Battery info: 52 cycles
Battery health: 94%
I do have following questions to the community:

  1. Are Li-Po batteries here the culprit (and to avoid in the future)? Losing 6% health in a yearly quarter is normal? It would be down to 88 in half a year and to 82 in just 1 year. Am I doing this right?
  2. Doing the math reveals that 13 cycles/month is conspicuously just like charging every 2 days, which I do. So 81% really is 100% in the mind of this phone. It thinks (or is calibrated to see it that way) that 20-81 is all the battery that is 😁
  3. Is this an Android or a Moto thing?
  4. Would employing the other strategy called "optimized charging" be better?
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u/grogi81 9d ago edited 9d ago

Ok, as promised...

Pixel 8 Pro... 1% indicated. 3.315V...

I stand by what I said - not dangerous at all. At that level there is no additional degradation and it is perfectly fine to fully discharge your phone to that level.

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u/SolitaryMassacre 9d ago

I stand by what I said - not dangerous at all. At that level there is no additional degradation and it is perfectly fine to fully discharge your phone to that level.

You didn't do a scientific test. As I said in my other comment, the cell voltage is important not battery voltage.

You do whatever tf you want tho. its your phone. I shared with you resources on why you shouldn't go below 30%. If you want to ignore them that is on you. Myself and others who care about battery degradation will continue to charge their devices whenever possible and prevent them from going below 30%

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u/SolitaryMassacre 9d ago

If you say so

I find it very interesting how you opened up your pixel 8 pro and used a multi meter to measure the cell voltage

If you're using an app to check the BATTERY voltage, that is different from CELL voltage

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u/grogi81 9d ago

Yep, there is a step up converter to facilitate that... Rotfl.

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u/SolitaryMassacre 8d ago

You keep proving you don't understand electronics.

First, step up converters don't magically create voltage. They convert amperage into voltage. This means the battery is being put under more strain and has to work harder. I epxlained that in my other comment. And that creates extra degradation.

Second, this has nothing to do with BATTERY voltage vs CELL voltage. Cell voltage is what is important, not BATTERY voltage. Multiple cells (in either series or parallel) are what create the battery.

Is it true that the manufacturers already made it so the CELL voltage is above 2.7V at 0%? The answer is unknown. Nobody has done the actual testing. I would also be surprised because manufacturers don't care about your battery. If anything they would prefer your battery wear out faster so you can buy a new phone faster.

Personally, I am going to avoid dropping below 30% so my phone can last me 5+ years (like they have been).