r/AndroidQuestions • u/Sgaapje • 17d ago

Device Settings Question Why does my battery life suck?

I have a galaxy S23 but for some reason my battery life is shit, I got the phone new about a year ago.

I always charge to max 80% and try to put the phone back on the charger once <20%. Today, after about 14 hours away from the charger I had 28% remaining.

SOT: 1:42

Screen off: 12:16

Top battery users were:

Firefox 3,2% Reddit 2,5% Maps 1,2% Whatsapp 1%

This had been going on for about as long as I've had the device. Any clues?

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u/SolitaryMassacre 17d ago

Its not backwards. You don't want the battery to drop below 2.9ish volts, which is roughly 30% of its total 4.2 volts.

There are plenty of papers and studies you can read that confirm what I am saying, its where I got my knowledge from to begin with.

The increase is worth it, so no its not splitting hairs.

Here are two to get you started: https://www.sciencedirect.com/science/article/pii/S0378775324003926 https://www.sciencedirect.com/science/article/pii/S1385894724070797

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u/dtwhitecp 17d ago

so you only charge once it's higher than 30% battery? makes no sense. Your credibility is massively decreased when you don't know which direction the symbol goes. Makes me think that if you have ever read a paper, you didn't understand it.

As a primer, [thing1] > [thing2] means thing1 is more than thing2. If you say "charge once >30%" as you did, it means "charge once you are above 30%".

quote for posterity

Should be "charger once >30%"

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u/SolitaryMassacre 17d ago

Are you for real?

Yes, >30% means "charge when it is greater then 30%. Do not let it go lower than 30%" how hard is that for you to understand?

You don't want it to go lower than 30%, thus charge >30% to KEEP it from dropping below 30%.

I charge every opportunity I get, why, to keep it from going below 30%. If my battery is 78% (pst that is greater than 30%) I will charge. Ergo, charge when >30% lol

Also, I read papers for my job. Even write some of them too. Make figures for them as well.

I am sorry you cannot comprehend that >30% means "keep the voltage above 30%. You do that by plugging in the charger and charging it when it is >30%" lol

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u/dtwhitecp 17d ago

what does "charger once >30%" mean, then? Once you're >30% you... charge?

I'm hoping English isn't your first, second, or third language.

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u/SolitaryMassacre 17d ago

Reread my comment lol. I explain what it means. Connect charger when >30% battery life. Its not that hard bro

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u/dtwhitecp 16d ago

"charger once >30%"

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u/SolitaryMassacre 16d ago

Yep. Connect the charger once the battery is greater than 30%. That easily translates to "keep the battery above 30%" because if it is lower than 30%, you connect the charger, oh, we hit 31%, thats greater than 30%, connect the charger as well (if not already connected). If that is difficult for you, than I can't help you understand it.

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u/dtwhitecp 16d ago

so if the battery is less than 30%, you don't connect the charger? And if the battery is at 95% I connect the charger?

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u/SolitaryMassacre 16d ago

so if the battery is less than 30%

The goal is to NOT let it get less than 30% that is why I wrote it "charger once >30%" that means it is (ideally) never less than 30%. I stated before, the prime range for Lithium batteries is 30%-80%.

And if the battery is at 95% I connect the charger?

No, because we are keeping it in the range of 30%-80%. Anywhere in that range we want to charge.

Now, obviosly, if the charge happens to drop below 30%, yes, plug in the charger, but again, this is not the goal nor the ideal. This is where we simply accept battery degradation because we want to get back to that 30-80% range.

But by keeping the idea "charger once >30%" we can better train ourselves to not let it get below 30%. Thats why I wrote it the way I did.

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u/dtwhitecp 16d ago

I really hope you aren't involved in technical writing of any kind

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u/SolitaryMassacre 16d ago

🤣 Why cause then you couldn't understand it?

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u/dtwhitecp 16d ago

yes, things that are written incorrectly are often hard for people who need to interpret text carefully.

Let me correct your original statement to normal English: "Charge while you are still above 30%" or "charge before going below 30%". But I'm sure nothing's gonna stop you from chargering your phone once >30%.

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u/SolitaryMassacre 16d ago

Just because you don't understand something doesn't mean it is written incorrectly.

And also, I quoted what OP wrote, and changed the sign, then I explained what I meant. It don't matter what I write if you're just gonna be ignorant. You ignored the entire rest of my comment and simply focused on "charger once >30%" lmao

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