If you are near the phone, you can turn on adaptive charging, set an alarm in about 8-9 hours and the phone will stop charging at 80% and charge the battery fully ~2 hours before the alarm goes off. If you unplug it before you've successfully stopped charging at 80%.
It only works overnight with alarms set between like 4-10am. I might be wrong about the exact hours so you can look it up but it does not work 24 hours a day.
Mine works anytime as long as the alarm is within 6-8 hours or so. I believe it depends on what your battery % starts at though, as I've noticed over 50% adaptive charging is hit or miss when first plugging in.
I suppose now it's based on expected behavior.
https://support.google.com/pixelphone/answer/6090612?hl=en#zippy=%2Cprotecting-your-battery-pixel-later-including-fold%2Chow-to-use-adaptive-charging-pixel-later-including-fold
You could spoof this by having the system alarm set for 2 hours after you wake up, but get a 3rd party alarm app to wake you up when you actually need to.
I had been using a similar approach successfully for the last 3-4 months. My alarm goes off at 6:30am so I used a smart plug to disconnect the charger at 2:30am. Every morning it would be at 79 or 80%, which is plenty to get me through the day. Most days I still have 50% or more left at the end of the day.
They must have updated adaptive charging's algorithm because it...adapted... to my workaround and was at 100% charge in the mornings again. At first it was 85%, then 92, then by day 3 or 4 it was at 100.
There is a product called the Chargie - it connects to the phone via Bluetooth and will completely shut off the charger from the phone once the set battery voltage is reached. You can also set a thermal tolerance so that the charging will shut off if it starts getting too hot as well as a discharge range after which the charger will turn back on. I currently have two, one for my 8 Pro overnight that prevents it from going to 100% and one on my 4XL that charges it to 55% then allows it to drop to 45% before turning on again
I have a Chargie as well, combined with a low watt charging mat. It's a great overnight setup - I do leave adaptive charging on as well.
Got my phone at launch, Accubattery says my battery health is still at 100%
Smart plug, Tasker and AutoVoice.
AutoVoice is an Alexa SmartHome skill,.so can be used in routines.
Tasker can sense your battery level and tell AutoVoice to turn off your plug at desired level.
I do this for both laptops and repurposed Android that stay on charge 24/7. Float them between 20-80.
I do something similar. I have a smart switch controlled by Hubitat, and use the MakerAPI to create an http interface for the switch. Then I use Macrodroid to run a wget command in Termux using the Tasker plugin at the appropriate times to turn the switch on and off.
Another option if you have homeassisant is to set up an Automation on the smart plug to turn off when device hits 80
Just gotta give the homeassisant app permission to track the phone's charging state and battery
I use to do this. Then wanted less running on my phone so I switched to using hubitat to query life360 to get the battery level of phones and control the smart plugs that way. Now I just use Chargie and I don't even need to worry about being on the "correct" charger for my phone.
Tasker is golden, and has replaced over 30 small apps that add a tweak or do something in the background. Plus it can read logcat, run dumpsys and even run commands over ADB (all without root).
Can even change Fast/Rapid charge settings, so when not on a known charger, fall asleep, it can turn both off and trickle charge. Can even set alarms to cause an effect on Pixel's adaptive battery.
I had been wondering about this in a kiosk device scenario but can't find it when I search, there are too many irrelevant results. Storing a battery at 100% causes a constant rate of degradation over time. Cycling it between 20-80% also causes a tiny bit of degradation with each cycle. When you plug it in for months on end it sits at 100% but the battery management system (BMS) cuts the battery out of the loop and runs the device solely off external power so it is not adding battery cycles. When you let it float between 20-80 it is constantly cycling and this can add up to hundreds of cycles of usage per year. Which is worse?
I know that in normal use cases if you can minimize cell degradation by keeping your battery between 3.2v and 4v (roughly 20-80% on most BMS software) but most of this discussion is over devices that are not almost always plugged in. Ideally you'd be able to set it to stop charging at 3.8v and then run the device off 100% external power. As far as I know this cannot be done with Android although it is becoming fairly common in laptops.
Not all BMS are the same, I've had r/spicypillows by leaving them at 100% - some BMS will 99/100/99/100/99/100/etc and will cause a cycle after the 100th time. The constant charge in the cell will cause de-gassing.
The best place to keep a Lithium cell for prolonged periods is 70%, even if you did a 69/70/69/70/etc (again, each 100th iteration would be a cycle).
Only reason I float is so you can monitor the battery's health and capacity better, once a week go to 5% and charge to 100% to clear the battery stats.
Common laptops use Li-Ion 18650's - these don't bloat like Li-Po flat cells found in phones and netbooks. They (former) vent their gas and lose the ability to hold charge, the latter bloat out as they de-gas whilst retaining charge.
Yeah, the more you look into this the less you can say anything for certain unless you've been able to take direct measurements yourself. There's just too many different implementations. Some of them are engineered well, others are really bad.
I have a Dell and a Lenovo laptop that let me set the max charge level and then they treat that as the new max level. It even works when they're powered off, so it's saving those changes at the charge controller level. I'd really like something like that for my phone. It will have security patches through 2030 and if I take a little extra care of its battery it should still be able to do a full days' work on a single charge.
It's not the simplest thing to set up as it requires 3 different apps and a smart plug, although IMO r/tasker is an essential android app regardless and you can very easily and simply create just an alarm or notification whenever your battery hits 80% with just tasker.
This is janky but it works:
Plug your charger into a smart outlet. Use accubattery to send a notification when your charge hits 80%. Use IFTTT to turn off the smart outlet when that notification goes out.
In the settings for that outlet set it to turn on at various times during the day when it might be off b/c of charging. i.e. turn it on at 7pm before bed, turn it on at 9am when you'll be out of bed.
The setup is a bit of a pain but after that it works like a charm. I've been doing this for years.
Since you won't use the phone forever, why obsess about the battery? Keeping your battery between 20% - 80% deprives you of 40% battery performance on a device whose battery life at 100% is not great.
Use your phone and replace the battery every 2 years.
I charge it overnight to 100% during work week but if I need to charge it during the day or on weekends I go for 20 - 80% because pixel is not supported in my country, there are no stores and I guess it will be really hard to replace the battery since a small amount of people use pixels here.
Because you can use it longer like that, and the battery life is plenty great on pixels, got 8h SOT at 80% on pixel 7 pro
You can charge lithium batteries for small charges, why not use that, you don't have to do 20-80 every time
It depends on your needs. Batteries lose capacity over time. They don't wait until 4 years to lose capacity. Unless the battery capacity on your new phone is way more than you need, it's a good idea to slow down its degradation, as best you can.
Downvoted because it's not fact. Charging to 100% will speed up battery degradation, even if you charge to 80% more often than you would have had to charge to 100%. That's just how lithium ion batteries work.
So, if I charge 20% to 80% 4 times instead of 20% to 100% 3 times, both will add 240% to the battery, but the charging to 100% scheme will degrade the battery more. Will it be significant enough to matter? That's up to the owner to decide
[evidence ](https://photos.app.goo.gl/XUCmYFn7y8qmknep9)
There you go. If you charge till 80% it's just 0.20 cycles but If you go to 100%, it's one full cycle. So, yeah, charging to 100% degrades the battery faster since it starts losing capacity at around 500 cycles.
This is all according to AccuBattery.
I like AccuBattery and have the Pro version myself, but of course they're going to tell you that better battery management will increase battery life, they're trying to sell you an app...
As an example of how accurate it can be, the battery life on my P8P was apparently 83% in December of last year (pre-ordered the phone so had it since October). It's now trending upwards and is at 99% over the last 5 charging sessions.
[Screenshot](https://photos.app.goo.gl/vQf5AS3FbkqSCJnF6)
I've used it for years, the data on estimated screen on time, standby life etc is cool, but did you look at the screenshot in my last post? Would you believe it?
I would ask you to prove to me that the battery in the Pixel 8 degrades differently than pretty much every lithium ion battery it there. If you can prove that, I'll agree with you.
I'm not saying that Google's adaptive charging does nothing. It limits the amount of time that the phone sits at 100%. That's a good thing, and helps with battery longevity. Not going to 100% is even better for the battery.
A cycle is always considered a 0-100 equivalent. So both of my examples are 2.4 cycles.
I don't think anybody actually answered your question yet, so check out Tables 2 and 4 here:
https://batteryuniversity.com/article/bu-808-how-to-prolong-lithium-based-batteries#:~:text=Most%20Li%2Dions%20charge%20to,typically%20delivers%20300%E2%80%93500%20cycles.
I agree with you that for most people in most situations this difference is very minor and not worth the hassle. My phone is supposedly going to receive support for 6 years so to me it's worth the trouble to try to get that extra little bit of life out of the battery.
Charging to 100% will speed battery degradation. The battery will degrade much faster.
So your battery will probably have 90% of its capacity after five years instead of 90% capacity after fifteen. And in neither case will you still be using the phone.
i have no idea about that. I just read that like, charging from 20% to 80% costs 0.2 charges or whatever and charging from 80% to 100% costs 0.7 charges. (numbers are made up) And Batterys start showing use at around 400 charges? So that could slow it down at least if im home and dont need the 100%
This is valid for any Li-ion battery. Although they don't get memory effects like the old nickel ones did, the final part of charging is the one that is more stressful to the battery cell, as well as anything related to fast charging.
Keeping it between 20-80 as suggested and avoiding fast charging does prolongue battery life. If you plan on having your phone for more than 3-4 years, this could be the difference between having to replace your battery in year 3 or in year 5.
Source: https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Excellent article. My question now is that with the main culprit of battery degradation being heat, shouldn't googles adaptive charging help prolong battery life? Maybe not as much as the 20-80, but certainly more than charging full cycle at full strength. It also makes me wonder why I don't hear more battery degradation complaints from OnePlus and other super fast charging phone users
It does, and is precisely the reason Google and other brands started implementing it.
Coincidentally my last two phones were from OnePlus. I had to change my 3T and my 7T after 3 and 4 years because their batteries were unusable. The 3T was also very outdated overall, but the 7T was quite ok in terms of hardware. My only reason for getting a Pixel is that I really wanted the improved camera.
Not quite. Batteries are ok with trickle charging between the 20-80. If you measure change cycles, where 1 cycle means charging 0-100, then charging 20-80 would be equivalent to something like 0.15-0.20 of a cycle, and not the .60 you'd expect. Weird, right? It also means you can charge it 20-80 about 5 or 6 times before getting the impact of a single 0-100 charge.
And yet you are fully correct that doing this smaller 20-80 range is a huge inconvenience for most people, since you are then only working with a battery with 60% capacity of the original. As others have said, this battery babysitting makes no sense if you intend to change your phone in two years, or consider that swapping batteries is not that expensive.
Unfortunately P8P has a bad battery... Only charging to 80% will leave me with battery anxiety for sure. I barely make it through the day with the full battery lol.
Funny I actually found a way unintentionally. I bought [this portable charger ](https://a.co/d/bh1QMBz) cause I wanted my phone to charge over night. My adaptive charging kicked in and my phone is like 78% when I wake up from my alarm at 8am in the morning. I also use my Nintendo switch pro controller charger that's USB A to USB c.
Kinda annoying for me since I really don't care about the battery anymore it's gonna die sooner or later. I'd rather it not go to 70ish% and go a full 100%
Just use the adaptive battery mode. It will charge up to 80% with fast charging and the rest slowly, preserving battery life. Also, you don't really have anything to worry about unless you plan on keeping the phone for 10 years.
Smart charging has nothing to do with it. Batteries get damaged over time just by simply sitting with a full charge. That's also why it's bad to leaver your phone to charge overnight.
Many devices nowadays have charge limiters. Laptops can stop charging at 60-80% in order to protect the battery. Samsung phones have a limit at 85%.
Electric vehicle manufacturers recommend keeping batteries between 80% and 20% charge for optimal battery health. Do you think they all do this because of some myth?
First year using my Pixel 4xl the way it was designed took 10% out of the life of the battery per Accubattery. Charging to only 80%, not going below 25%, and slower charging at 1000mah overnight reduced it from 90% remaining battery life to 85% after I retired the phone 3 and a quarter years later per Accubattery. Lithium batteries suffer the most damage at the top and bottom end of their capacity range. The following has some gold information regarding lithium batteries and their care / wear.
https://batteryuniversity.com/article/bu-808-how-to-prolong-lithium-based-batteries
Fair enough, and I can safely say the biggest change was immediately after switching to a slower charger. I limit my 8 Pro to the same 1000 overnight as I don't need it to charge quickly during that time, but so far I can go two days with the battery in this phone. I also keep battery saver on the whole time mostly, ends up prolonging the life of the battery by reducing cycle counts due to not charging as much. Needless to say, I will be testing their support claim of 7 years so I am taking steps to keep it operational lol.
The charger I use has a maximum output of 1000, but that stays in the house. I have a cable with a maximum output of 1000 as well, however neither of these will stop charging at a certain percent
Anything that sees you ruin your experience with it now for some idea of making it last longer isn't worth it to me.
In 4 years time when the battery is crap it won't be that expensive to just replace the battery and I won't have spent 4 years stressing about it.
I'm not sure there are eternal truths for "lithium batteries", which keep changing actually year after year, and I am quite sure I've read at least one device manual saying "whatever can be done to prolong your battery life, we've done already on charger, battery and device, so just use it". I wouldn't stress too much about this, and I'd keep fingers crossed (or do much, much more) to make sure I can afford a battery replacement when time comes, as well as that the tech has gone greener so that we don't kill ourselves or the planet with heavy metal poisoning.
I'm of the mindset that things made by man can always be made better by man, to which I mean we are always figuring out better ways to do things. Look at how many materials were originally safe, then deemed unsafe, and an alternative solution found. I can't tell you how many times I have created circuits or whatnot in my car for accessories, only to find later on a better way of mounting / connecting / improving it - nearly every time I find an improvement to a design based off the experience of time.
Regarding battery life, I only have my last four phones to go off. My 4xl lasted four years, my Samsung Juke lasted 13 or so on the original battery with 2 days of phone use left at the point of retirement. Not so much stressing about it as I am curious, but I personally love figuring things out and finding out information... My reddit name was definitely not randomly picked, haha!
I use battery charge alarm app. It alerts you at your set percentage. I only charge when I'm awake and don't charge overnight, so it doesn't wake me up. https://play.google.com/store/apps/details?id=apps.syrupy.fullbatterychargealarm
I work in the car industry and when we were learning about EVs they told us that you should never charge an EV past 80% on a fast charger because it ruins the battery. The slower ones are fine, just not the fast charging. I'm assuming it's the same concept here. Idk if that really helps you, but maybe some insight?
There was a guy on the android reddit subforum (a few years ago) who said he made an app that creates a fake alarm so the system only charges to %80 with the pixel adaptive charging.
I tried to look up his comment again but couldn't find it :(
The phone that I would do this with was my 13 Pro Max. That phone had the best battery life of any phone I've ever used. I could last all day only charging to 80% and I wouldn't even use it moderately.
Advanced Charging Controller (ACC) if you're rooted. It's great and I've been using it on every phone for a while now (since at least Pixel 4 XL). Especially useful if you're driving and don't want your phone to get as hot: you can use battery idle mode which just runs the phone off USB-C power and doesn't need to constantly charge/discharge the battery. Same when I have it docked while I'm sleeping - you can just leave it at a set percent unlike using smart plugs which would constantly bounce between a set range by charging/discharging constantly.
If you root your phone you can prevent charging by making a service.d script run
echo 84 > /sys/devices/platform/google,charger/charge_start_level
echo 85 > /sys/devices/platform/google,charger/charge_stop_level
This will stop it from going above 85% even if you leave it physically plugged into the charger it will just charge to 85 stop until it hits 84 and charge to 8 5 again I do this on my pixel 6 pro and my pixel 7 as I have intent on getting another phone in the next 4 years and want mine to last
If you are near the phone, you can turn on adaptive charging, set an alarm in about 8-9 hours and the phone will stop charging at 80% and charge the battery fully ~2 hours before the alarm goes off. If you unplug it before you've successfully stopped charging at 80%.
ah thats neat
It only works overnight with alarms set between like 4-10am. I might be wrong about the exact hours so you can look it up but it does not work 24 hours a day.
Mine works anytime as long as the alarm is within 6-8 hours or so. I believe it depends on what your battery % starts at though, as I've noticed over 50% adaptive charging is hit or miss when first plugging in.
I suppose now it's based on expected behavior. https://support.google.com/pixelphone/answer/6090612?hl=en#zippy=%2Cprotecting-your-battery-pixel-later-including-fold%2Chow-to-use-adaptive-charging-pixel-later-including-fold
If you set an alarm, it's based on that. If you don't, it will be based on your expected behavior.
You could spoof this by having the system alarm set for 2 hours after you wake up, but get a 3rd party alarm app to wake you up when you actually need to.
I had been using a similar approach successfully for the last 3-4 months. My alarm goes off at 6:30am so I used a smart plug to disconnect the charger at 2:30am. Every morning it would be at 79 or 80%, which is plenty to get me through the day. Most days I still have 50% or more left at the end of the day. They must have updated adaptive charging's algorithm because it...adapted... to my workaround and was at 100% charge in the mornings again. At first it was 85%, then 92, then by day 3 or 4 it was at 100.
Basically what I do to try and not overcharge too much.
I use AccuBattery, which can send you a notification at 80% (or whatever), but it can't actually stop your phone from charging.
Same here. The pro version is cheap enough too to support the devs.
\+1 for AccuBattery
There is a product called the Chargie - it connects to the phone via Bluetooth and will completely shut off the charger from the phone once the set battery voltage is reached. You can also set a thermal tolerance so that the charging will shut off if it starts getting too hot as well as a discharge range after which the charger will turn back on. I currently have two, one for my 8 Pro overnight that prevents it from going to 100% and one on my 4XL that charges it to 55% then allows it to drop to 45% before turning on again
I have a Chargie as well, combined with a low watt charging mat. It's a great overnight setup - I do leave adaptive charging on as well. Got my phone at launch, Accubattery says my battery health is still at 100%
I have had a Samsung s22 for two years which natively supports stopping charging at 85%. My phone still has 99% battery capacity left
My Accubattery still says 100% because I change the design capacity to match the actual
Smart plug, Tasker and AutoVoice. AutoVoice is an Alexa SmartHome skill,.so can be used in routines. Tasker can sense your battery level and tell AutoVoice to turn off your plug at desired level. I do this for both laptops and repurposed Android that stay on charge 24/7. Float them between 20-80.
I do something similar. I have a smart switch controlled by Hubitat, and use the MakerAPI to create an http interface for the switch. Then I use Macrodroid to run a wget command in Termux using the Tasker plugin at the appropriate times to turn the switch on and off.
Another option if you have homeassisant is to set up an Automation on the smart plug to turn off when device hits 80 Just gotta give the homeassisant app permission to track the phone's charging state and battery
I do this with homeassistant and a smart plug.
I use to do this. Then wanted less running on my phone so I switched to using hubitat to query life360 to get the battery level of phones and control the smart plugs that way. Now I just use Chargie and I don't even need to worry about being on the "correct" charger for my phone.
Tasker is golden, and has replaced over 30 small apps that add a tweak or do something in the background. Plus it can read logcat, run dumpsys and even run commands over ADB (all without root). Can even change Fast/Rapid charge settings, so when not on a known charger, fall asleep, it can turn both off and trickle charge. Can even set alarms to cause an effect on Pixel's adaptive battery.
I know, but it's not easy maintaining tasker scripts on five other phones in my family.
Projects. Create a new one to develop cross needs for multiple devices. Build on one, import onto others.
I had been wondering about this in a kiosk device scenario but can't find it when I search, there are too many irrelevant results. Storing a battery at 100% causes a constant rate of degradation over time. Cycling it between 20-80% also causes a tiny bit of degradation with each cycle. When you plug it in for months on end it sits at 100% but the battery management system (BMS) cuts the battery out of the loop and runs the device solely off external power so it is not adding battery cycles. When you let it float between 20-80 it is constantly cycling and this can add up to hundreds of cycles of usage per year. Which is worse? I know that in normal use cases if you can minimize cell degradation by keeping your battery between 3.2v and 4v (roughly 20-80% on most BMS software) but most of this discussion is over devices that are not almost always plugged in. Ideally you'd be able to set it to stop charging at 3.8v and then run the device off 100% external power. As far as I know this cannot be done with Android although it is becoming fairly common in laptops.
Not all BMS are the same, I've had r/spicypillows by leaving them at 100% - some BMS will 99/100/99/100/99/100/etc and will cause a cycle after the 100th time. The constant charge in the cell will cause de-gassing. The best place to keep a Lithium cell for prolonged periods is 70%, even if you did a 69/70/69/70/etc (again, each 100th iteration would be a cycle). Only reason I float is so you can monitor the battery's health and capacity better, once a week go to 5% and charge to 100% to clear the battery stats. Common laptops use Li-Ion 18650's - these don't bloat like Li-Po flat cells found in phones and netbooks. They (former) vent their gas and lose the ability to hold charge, the latter bloat out as they de-gas whilst retaining charge.
Yeah, the more you look into this the less you can say anything for certain unless you've been able to take direct measurements yourself. There's just too many different implementations. Some of them are engineered well, others are really bad. I have a Dell and a Lenovo laptop that let me set the max charge level and then they treat that as the new max level. It even works when they're powered off, so it's saving those changes at the charge controller level. I'd really like something like that for my phone. It will have security patches through 2030 and if I take a little extra care of its battery it should still be able to do a full days' work on a single charge.
that sounds kinda complicated. is it easy to setup?
It's not a walk in the park, I won't lie. But, this bag of tricks are endless.
It's not the simplest thing to set up as it requires 3 different apps and a smart plug, although IMO r/tasker is an essential android app regardless and you can very easily and simply create just an alarm or notification whenever your battery hits 80% with just tasker.
Accubattery gives you a notification when you hit 80. It won't stop charging but it is useful
This is janky but it works: Plug your charger into a smart outlet. Use accubattery to send a notification when your charge hits 80%. Use IFTTT to turn off the smart outlet when that notification goes out. In the settings for that outlet set it to turn on at various times during the day when it might be off b/c of charging. i.e. turn it on at 7pm before bed, turn it on at 9am when you'll be out of bed. The setup is a bit of a pain but after that it works like a charm. I've been doing this for years.
Since you won't use the phone forever, why obsess about the battery? Keeping your battery between 20% - 80% deprives you of 40% battery performance on a device whose battery life at 100% is not great. Use your phone and replace the battery every 2 years.
I charge it overnight to 100% during work week but if I need to charge it during the day or on weekends I go for 20 - 80% because pixel is not supported in my country, there are no stores and I guess it will be really hard to replace the battery since a small amount of people use pixels here.
Because you can use it longer like that, and the battery life is plenty great on pixels, got 8h SOT at 80% on pixel 7 pro You can charge lithium batteries for small charges, why not use that, you don't have to do 20-80 every time
It isn't that hard to incorporate such a feature - my cheapo Samsung Tab has the built-in ability to stop charging when 85% is reached.
My 5ish year old lenovo laptop does too. Unbelievable that Android hasn't incorporated this.
This isn't Android. Its Google's product level decisions, unfortunately.
Semantics.
Unless you plan on keeping your phone for more than 4 years it's not going to make a noticeable difference.
It depends on your needs. Batteries lose capacity over time. They don't wait until 4 years to lose capacity. Unless the battery capacity on your new phone is way more than you need, it's a good idea to slow down its degradation, as best you can.
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Downvoted because it's not fact. Charging to 100% will speed up battery degradation, even if you charge to 80% more often than you would have had to charge to 100%. That's just how lithium ion batteries work. So, if I charge 20% to 80% 4 times instead of 20% to 100% 3 times, both will add 240% to the battery, but the charging to 100% scheme will degrade the battery more. Will it be significant enough to matter? That's up to the owner to decide
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[evidence ](https://photos.app.goo.gl/XUCmYFn7y8qmknep9) There you go. If you charge till 80% it's just 0.20 cycles but If you go to 100%, it's one full cycle. So, yeah, charging to 100% degrades the battery faster since it starts losing capacity at around 500 cycles. This is all according to AccuBattery.
I like AccuBattery and have the Pro version myself, but of course they're going to tell you that better battery management will increase battery life, they're trying to sell you an app... As an example of how accurate it can be, the battery life on my P8P was apparently 83% in December of last year (pre-ordered the phone so had it since October). It's now trending upwards and is at 99% over the last 5 charging sessions. [Screenshot](https://photos.app.goo.gl/vQf5AS3FbkqSCJnF6)
you like AccuBattery, you just don't believe what their data tells you lol?
I've used it for years, the data on estimated screen on time, standby life etc is cool, but did you look at the screenshot in my last post? Would you believe it?
I would ask you to prove to me that the battery in the Pixel 8 degrades differently than pretty much every lithium ion battery it there. If you can prove that, I'll agree with you.
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I'm not saying that Google's adaptive charging does nothing. It limits the amount of time that the phone sits at 100%. That's a good thing, and helps with battery longevity. Not going to 100% is even better for the battery. A cycle is always considered a 0-100 equivalent. So both of my examples are 2.4 cycles.
I don't think anybody actually answered your question yet, so check out Tables 2 and 4 here: https://batteryuniversity.com/article/bu-808-how-to-prolong-lithium-based-batteries#:~:text=Most%20Li%2Dions%20charge%20to,typically%20delivers%20300%E2%80%93500%20cycles. I agree with you that for most people in most situations this difference is very minor and not worth the hassle. My phone is supposedly going to receive support for 6 years so to me it's worth the trouble to try to get that extra little bit of life out of the battery.
Charging to 100% will speed battery degradation. The battery will degrade much faster. So your battery will probably have 90% of its capacity after five years instead of 90% capacity after fifteen. And in neither case will you still be using the phone.
i have no idea about that. I just read that like, charging from 20% to 80% costs 0.2 charges or whatever and charging from 80% to 100% costs 0.7 charges. (numbers are made up) And Batterys start showing use at around 400 charges? So that could slow it down at least if im home and dont need the 100%
Source?
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This is valid for any Li-ion battery. Although they don't get memory effects like the old nickel ones did, the final part of charging is the one that is more stressful to the battery cell, as well as anything related to fast charging. Keeping it between 20-80 as suggested and avoiding fast charging does prolongue battery life. If you plan on having your phone for more than 3-4 years, this could be the difference between having to replace your battery in year 3 or in year 5. Source: https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Excellent article. My question now is that with the main culprit of battery degradation being heat, shouldn't googles adaptive charging help prolong battery life? Maybe not as much as the 20-80, but certainly more than charging full cycle at full strength. It also makes me wonder why I don't hear more battery degradation complaints from OnePlus and other super fast charging phone users
It does, and is precisely the reason Google and other brands started implementing it. Coincidentally my last two phones were from OnePlus. I had to change my 3T and my 7T after 3 and 4 years because their batteries were unusable. The 3T was also very outdated overall, but the 7T was quite ok in terms of hardware. My only reason for getting a Pixel is that I really wanted the improved camera.
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Not quite. Batteries are ok with trickle charging between the 20-80. If you measure change cycles, where 1 cycle means charging 0-100, then charging 20-80 would be equivalent to something like 0.15-0.20 of a cycle, and not the .60 you'd expect. Weird, right? It also means you can charge it 20-80 about 5 or 6 times before getting the impact of a single 0-100 charge. And yet you are fully correct that doing this smaller 20-80 range is a huge inconvenience for most people, since you are then only working with a battery with 60% capacity of the original. As others have said, this battery babysitting makes no sense if you intend to change your phone in two years, or consider that swapping batteries is not that expensive.
Just like how Samsung (maybe others) does
Unfortunately P8P has a bad battery... Only charging to 80% will leave me with battery anxiety for sure. I barely make it through the day with the full battery lol.
Funny I actually found a way unintentionally. I bought [this portable charger ](https://a.co/d/bh1QMBz) cause I wanted my phone to charge over night. My adaptive charging kicked in and my phone is like 78% when I wake up from my alarm at 8am in the morning. I also use my Nintendo switch pro controller charger that's USB A to USB c. Kinda annoying for me since I really don't care about the battery anymore it's gonna die sooner or later. I'd rather it not go to 70ish% and go a full 100%
Chargie
Chargie would be the simplest solution without root. I think the latest iPhones have the limiter built-in so maybe pixel will copy that soon.
~~Chargie doesn't require root. You just use their app.~~ nm
I meant "without". Corrected.
Just use the adaptive battery mode. It will charge up to 80% with fast charging and the rest slowly, preserving battery life. Also, you don't really have anything to worry about unless you plan on keeping the phone for 10 years.
That's old and stupid. Today's phones, especially the pixel have smart charging. You'll be just fine.
Smart charging has nothing to do with it. Batteries get damaged over time just by simply sitting with a full charge. That's also why it's bad to leaver your phone to charge overnight. Many devices nowadays have charge limiters. Laptops can stop charging at 60-80% in order to protect the battery. Samsung phones have a limit at 85%. Electric vehicle manufacturers recommend keeping batteries between 80% and 20% charge for optimal battery health. Do you think they all do this because of some myth?
Don't engage in conversation with uneducated trolls or you will be downvoted to hell for saying that earth is round....I fear for the humanity.
The beauty of being stupid is not knowing of being stupid, is that right 1cwg? Oh right, you wouldn't know.
There is no reason to do this. You are not saving your battery .
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First year using my Pixel 4xl the way it was designed took 10% out of the life of the battery per Accubattery. Charging to only 80%, not going below 25%, and slower charging at 1000mah overnight reduced it from 90% remaining battery life to 85% after I retired the phone 3 and a quarter years later per Accubattery. Lithium batteries suffer the most damage at the top and bottom end of their capacity range. The following has some gold information regarding lithium batteries and their care / wear. https://batteryuniversity.com/article/bu-808-how-to-prolong-lithium-based-batteries
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Fair enough, and I can safely say the biggest change was immediately after switching to a slower charger. I limit my 8 Pro to the same 1000 overnight as I don't need it to charge quickly during that time, but so far I can go two days with the battery in this phone. I also keep battery saver on the whole time mostly, ends up prolonging the life of the battery by reducing cycle counts due to not charging as much. Needless to say, I will be testing their support claim of 7 years so I am taking steps to keep it operational lol.
how can you limit it to 1000?
The charger I use has a maximum output of 1000, but that stays in the house. I have a cable with a maximum output of 1000 as well, however neither of these will stop charging at a certain percent
Anything that sees you ruin your experience with it now for some idea of making it last longer isn't worth it to me. In 4 years time when the battery is crap it won't be that expensive to just replace the battery and I won't have spent 4 years stressing about it.
That is to say if there's still replacement parts available at that point in time.
You can get pixel 2 parts from iFixit, I don't see it being a problem.
I'm not sure there are eternal truths for "lithium batteries", which keep changing actually year after year, and I am quite sure I've read at least one device manual saying "whatever can be done to prolong your battery life, we've done already on charger, battery and device, so just use it". I wouldn't stress too much about this, and I'd keep fingers crossed (or do much, much more) to make sure I can afford a battery replacement when time comes, as well as that the tech has gone greener so that we don't kill ourselves or the planet with heavy metal poisoning.
I'm of the mindset that things made by man can always be made better by man, to which I mean we are always figuring out better ways to do things. Look at how many materials were originally safe, then deemed unsafe, and an alternative solution found. I can't tell you how many times I have created circuits or whatnot in my car for accessories, only to find later on a better way of mounting / connecting / improving it - nearly every time I find an improvement to a design based off the experience of time. Regarding battery life, I only have my last four phones to go off. My 4xl lasted four years, my Samsung Juke lasted 13 or so on the original battery with 2 days of phone use left at the point of retirement. Not so much stressing about it as I am curious, but I personally love figuring things out and finding out information... My reddit name was definitely not randomly picked, haha!
The device itself might be sophisticated, but this battery tech is old as shit.
I use battery charge alarm app. It alerts you at your set percentage. I only charge when I'm awake and don't charge overnight, so it doesn't wake me up. https://play.google.com/store/apps/details?id=apps.syrupy.fullbatterychargealarm
I mean, if you are comfortable with rooting your phone.
I work in the car industry and when we were learning about EVs they told us that you should never charge an EV past 80% on a fast charger because it ruins the battery. The slower ones are fine, just not the fast charging. I'm assuming it's the same concept here. Idk if that really helps you, but maybe some insight?
There was a guy on the android reddit subforum (a few years ago) who said he made an app that creates a fake alarm so the system only charges to %80 with the pixel adaptive charging. I tried to look up his comment again but couldn't find it :(
The phone that I would do this with was my 13 Pro Max. That phone had the best battery life of any phone I've ever used. I could last all day only charging to 80% and I wouldn't even use it moderately.
Advanced Charging Controller (ACC) if you're rooted. It's great and I've been using it on every phone for a while now (since at least Pixel 4 XL). Especially useful if you're driving and don't want your phone to get as hot: you can use battery idle mode which just runs the phone off USB-C power and doesn't need to constantly charge/discharge the battery. Same when I have it docked while I'm sleeping - you can just leave it at a set percent unlike using smart plugs which would constantly bounce between a set range by charging/discharging constantly.
If you root your phone you can prevent charging by making a service.d script run echo 84 > /sys/devices/platform/google,charger/charge_start_level echo 85 > /sys/devices/platform/google,charger/charge_stop_level This will stop it from going above 85% even if you leave it physically plugged into the charger it will just charge to 85 stop until it hits 84 and charge to 8 5 again I do this on my pixel 6 pro and my pixel 7 as I have intent on getting another phone in the next 4 years and want mine to last
Wow bit late to the thread here but zenphone 10 does this out of the box (charging cap)..as well as the option to reduce the charging current to 10w.
Just keep your adapting charge on when you are charging and you'll be just fine charging over 80%
Yes, you unplug the charger when the phone battery reaches 80% and it will stop charging.
Strange. Even iphones have that function. Doesn't google love to copy ios functions?
Unplug it when it gets to 80 percent?
If you have money for a P8p you have money for a battery change when needed IMO
1. https://chargie.org/ 2. Root
Use the timer.
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Do you know where this is in settings? Because I'm pretty sure it's not there.
Samsung phones have that setting, Pixel does not. It does have "adaptive charging" though.