Charging a lithium battery to 80% only?
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Charging a lithium battery to 80% only?
1–10 of 362 posts
Re: Charging a lithium battery to 80% only?
#2Neither too full nor too empty seems to be the sweet spot, but of course those who'd rather you buy a new one once in a while will optimise for other things than total cycle life energy.
The newish "high voltage" (>4.2V/cell) cells are an excellent example of this; they've come up with better material chemistries that resist degradation and would let cells last many times longer for the same capacity, but instead they just push the cells harder so they end up lasting roughly the same amount of time for a few tens of % increase in capacity.
Re: Charging a lithium battery to 80% only?
#3I've given up trying. If a device is willing to lie to me and only charge to 80% while saying it's charged, great, but all of this "try to stay in a range" logic flies in the face of reality.
Every device I use besides my cell phone, Nintendo Switch, and Nintendo 3DS has atrocious power drain when not in use. OS does not matter. Windows laptop, Linux laptop, ChromeOS laptop, Android Tablet, Amazon Tablet, you name it, if I set it down at 80% and come back 48 hours later it will be below 25%. So I just leave them plugged in when not in use, and to hell with battery longevity.
Re: Charging a lithium battery to 80% only?
#4I've given up trying. If a device is willing to lie to me and only charge to 80% while saying it's charged, great, but all of this "try to stay in a range" logic flies in the face of reality. Every device I use besides my cell phone, Nintendo Switch, and Nintendo 3DS has atrocious power drain when not in use. OS does not matter. Windows laptop, Linux laptop, ChromeOS laptop, Android Tablet, Amazon Tablet, you name it…
FWIW, I can't speak to other operating systems, but with Linux (maybe requiring cooperative hardware? I'm actually not sure) you can configure it to stop charging at a certain % if the charge controller doesn't have reserve.
I can find a link if you're interested; IIRC it was easy to setup and easy to temporarily disable if you need to fully charge for e.g. a long flight without outlets
Re: Charging a lithium battery to 80% only?
#5I've given up trying. If a device is willing to lie to me and only charge to 80% while saying it's charged, great, but all of this "try to stay in a range" logic flies in the face of reality. Every device I use besides my cell phone, Nintendo Switch, and Nintendo 3DS has atrocious power drain when not in use. OS does not matter. Windows laptop, Linux laptop, ChromeOS laptop, Android Tablet, Amazon Tablet, you name it…
FWIW, I can't speak to other operating systems, but with Linux (maybe requiring cooperative hardware? I'm actually not sure) you can configure it to stop charging at a certain % if the charge controller doesn't have reserve. I can find a link if you're interested; IIRC it was easy to setup and easy to temporarily disable if you need to fully charge for e.g. a long flight without outlets
Most laptops come with some software bundled that helps configure this. Dell does I know. So did Lenovo.
Re: Charging a lithium battery to 80% only?
#6I've given up trying. If a device is willing to lie to me and only charge to 80% while saying it's charged, great, but all of this "try to stay in a range" logic flies in the face of reality. Every device I use besides my cell phone, Nintendo Switch, and Nintendo 3DS has atrocious power drain when not in use. OS does not matter. Windows laptop, Linux laptop, ChromeOS laptop, Android Tablet, Amazon Tablet, you name it…
Even my iPad has horrible background drain. My iPhone is the only device I have that I can calmly leave at 15% when I go to bed and know my alarm will still work in the morning.
Re: Charging a lithium battery to 80% only?
#7Most of the devices that allow charge limiting don't have battery cutoff anyway, so you're discharging to 79% and charging to 80 over and over again. I've observed that in my ThinkPad. Fretting over ultimate lifespan doesn't seem worth it, especially at the wild charge rates devices have now.
Re: Charging a lithium battery to 80% only?
#8I've given up trying. If a device is willing to lie to me and only charge to 80% while saying it's charged, great, but all of this "try to stay in a range" logic flies in the face of reality. Every device I use besides my cell phone, Nintendo Switch, and Nintendo 3DS has atrocious power drain when not in use. OS does not matter. Windows laptop, Linux laptop, ChromeOS laptop, Android Tablet, Amazon Tablet, you name it…
FWIW, I can't speak to other operating systems, but with Linux (maybe requiring cooperative hardware? I'm actually not sure) you can configure it to stop charging at a certain % if the charge controller doesn't have reserve. I can find a link if you're interested; IIRC it was easy to setup and easy to temporarily disable if you need to fully charge for e.g. a long flight without outlets
Re: Charging a lithium battery to 80% only?
#9I've given up trying. If a device is willing to lie to me and only charge to 80% while saying it's charged, great, but all of this "try to stay in a range" logic flies in the face of reality. Every device I use besides my cell phone, Nintendo Switch, and Nintendo 3DS has atrocious power drain when not in use. OS does not matter. Windows laptop, Linux laptop, ChromeOS laptop, Android Tablet, Amazon Tablet, you name it…
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Re: Charging a lithium battery to 80% only?
#10I recently bought a Pixel phone after having Samsung for a few years. Immediately the one thing that annoyed me was the lack for both limiting charge as well as enforcing slow charging. Both not only are useful for long term battery life but also, since I'm an occasional thruhiker (right now on my way to Mexico along The Continental Divide Trail), they make better use of my power bank.
Without rooting the device these two features are not available (well, I can achieve slow charging by using a cable that only supports certain voltage and current)