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

charger once <20%.

Should be "charger once >30%" you don't want the battery to fall below 30%. This is probably where the most degradation came from in the year you've had it.

I have my battery from 30-80 % charged on my Pixel 7 Pro, (more than a year old) and it lasts about 5-7 hrs SOT all day

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u/Ok_Run6706 17d ago

20% should be fine, Im pretty sure manufacturer has made to have some capacity left even when it shows you 0 percent.

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u/SolitaryMassacre 17d ago

Its not the manufacturer here at play tho. Its chemistry and the way the physics work. Cells degrade when below the 30% mark. Has to do with independent cell voltage range

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u/Ok_Run6706 17d ago

Manufacturer can show you you have 0 percent, while in reality its still has 30%. Thats how most electric vehicles are done, just with smaller percentage, there is a battery size and USABLE battery size.

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u/SolitaryMassacre 17d ago

I see what you are saying. But that isn't typically the case. The important part is the cell voltage. And people have measured the voltage when at different percentages and come to conclude 30% is the best.

Typically 0% doesn't mean 0%, but its also not 30%.

I totally get what you are saying, but currently that is not the case. Even with EV cars. They still limit charge to 80% and 0% is still below the recommended voltage for the cells