31–40 of 73 posts
Unless it's a desktop with ups, in which case it should stay at 50%-80%.
Please explain like I'm five: if continuously charging and drawing power at 100% hurts my laptop's battery, why doesn't the laptop bypass the battery circuitry, keeping it idle, and use the incoming juice directly?
macOS actually does that somehow indeed. Not exactly, but it does prevent charge when it “guesses” the computer will stay plugged in for a long time based on previous usage.
Earlier quoted context omitted.
Some laptop manufacturers include this mode. At least I have it in lenovos (not exatctly 70%, they allow cap at 80%), and have seen in some samsungs years ago.
Where do you set this? OS, BIOS or some Lenovo control software?
- Work MPB which I got 2021-12, 99% of the time plugged in because I was WFH, last time I unplugged it to return it to my employer, the battery was at ~95% of max capacity (as reported by MacOS)
- Personal MBP bought 2021-12, only plugging in when battery was low, and 1.5y later the battery was at 80% of max capacity
It was then that I investigated a bit and learned the trick of charging only up to 80%, which is something that MacOS does automatically when it's constantly plugged in which preserves battery life.
Since then, my personal laptop also stays plugged in most of the time, its battery is almost always at 80% and the battery hasn't decayed further.
Is there a good reason why we can't tell our devices to charge the battery to say 70% and then internally disconnect the battery, so it's neither charging nor discharging?
ThinkPad has this. My battery only charges to 75% and it must drop to 50% before it starts charging again. You can configure any value for either setting with TLP.
I regretfully set the bios to fully charge again to disable this auto-dim feature.
This is why modern laptops don't stay at 100% if the detect that they're always plugged in, no?
And one day you'll unplug it and complain "why is the battery at 80%? It was plugged in all day. Stupid manufacturer. I will tell everyone to avoid this piece of shit" The least losing move for the manufacturer is to always charge 100%.
On my Lenovo laptop I have a toggle I can switch any time between battery saver mode(stay at 80%) and fast charging mode (charge asap to 100%).
If when designing products you never even let users choose to learn, you guarantee you will have a stupid user base. Stop endorsing stupidity.
Earlier quoted context omitted.
Some laptop manufacturers include this mode. At least I have it in lenovos (not exatctly 70%, they allow cap at 80%), and have seen in some samsungs years ago.
Where do you set this? OS, BIOS or some Lenovo control software?
I assume there's some way to do this in Windows as well, but I don't know it.
Please explain like I'm five: if continuously charging and drawing power at 100% hurts my laptop's battery, why doesn't the laptop bypass the battery circuitry, keeping it idle, and use the incoming juice directly?
So you'll buy a new computer in 2 years when the battery is dead. I'm boycotting laptops until this gets fixed
Hard to tell if it max a difference but judging by battery health stats others are reporting I’d say yes.
Would be nice if device had a built in way to cap it for daily use and only go to 100% if travelling etc. I’m rarely away from a power socket day to day anyway
Apple took this out of Mac OS somewhat recently. You can try to rely on their power management, but given battery decay is a common reason to buy a new machine I don’t trust them really. If you have an Apple Silicon Mac I can recommend Battery [1]. It can keep your Mac at 80%, and even force discharge while plugged in to get there. It’s a CLI and status bar utility, I love it. [1: https://github.com/actuallymentor/ba…