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I don't know if I am the only one seeing this, but when I had Eclair, I had crap battery life, to the tune of 10 hours or so. (Granted this may not be crap for Nexus One but it is crap based off past phones I have had.) I installed FRF85B last night and discovered some weird glitches.
First off, when it was in my car dock, it wasn't charging yet the battery life kept dropping, I powered off the device, and powered it back on 10 minutes later (still in the dock) and no change stayed at 91%, still wouldn't charge. I then powered it off, took it out of the dock, plugged in the car charger cable directly and powered on my N1, when it turned on, it said I had 100% battery life. I then plugged it back into the car dock, and voila it started charging.
Secondly, originally when I had unplugged my N1 this morning I used it for about an hour at 5AM and it dropped 2% I plugged it back in to top it off expecting the same crap battery life from Eclair, yet so far, my phone has been fully topped off (from the car dock) for the past 40 minutes and I've made about 20 minutes of phone calls on it, yet it still is reporting 100%. So either Froyo can't properly report battery life, or it has the potential to have absurd battery life. Anyone else experiencing anything like this?
First off - you still didn't search this forum, so you're still thinking that an overcharging protection that doesn't allow you to charge unless you drop below 91%, is a quirk. It's not.
Second, wiping battery stats and making battery calibration procedure ONCE will give you a good starting point to measure something.
Jack_R1 said:
First off - you still didn't search this forum, so you're still thinking that an overcharging protection that doesn't allow you to charge unless you drop below 91%, is a quirk. It's not.
Second, wiping battery stats and making battery calibration procedure ONCE will give you a good starting point to measure something.
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Click to collapse
The quirk isn't that it wouldn't let me charge that way, the issue was, my battery reported 91% yet when I rebooted the device with the charger directly plugged into it, it immediately showed 100%. So pretty much over the course of 30 seconds I gained 9% battery life.
I wiped my device to factory settings before upgrading to Froyo, and after as well, since my device is not rooted, my understanding is I cannot wipe my battery calibration log.
I did drain my battery fully after upgrading to froyo last night and did a full charge as well.
What you're describing looks like the statistics of the battery is "lying" a bit. I believe it can be thrown a bit off by trying to charge it when it's in 91-100% range, but I don't know the exact way it works, so I can't say much about it.
Indeed, if you're not rooted, wiping battery stats is not an option. Several times of full charge and long discharge (you don't need to go below 20%, to prevent harming the battery) are helpful in correcting the statistics.
If you get a chance to try, please repeat this again (having the phone at >90%, turning it off, plugging it into the charger and turning it back on). If it shows "Charged" again - it might be a bug worth reporting.
Jack_R1 said:
What you're describing looks like the statistics of the battery is "lying" a bit. I believe it can be thrown a bit off by trying to charge it when it's in 91-100% range, but I don't know the exact way it works, so I can't say much about it.
Indeed, if you're not rooted, wiping battery stats is not an option. Several times of full charge and long discharge (you don't need to go below 20%, to prevent harming the battery) are helpful in correcting the statistics.
If you get a chance to try, please repeat this again (having the phone at >90%, turning it off, plugging it into the charger and turning it back on). If it shows "Charged" again - it might be a bug worth reporting.
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Click to collapse
I'll have to try it again tomorrow morning, first see if it happens under the same circumstances and go from there. One thing I do remember is the widget I was using "Battery Left" reported that at 91% I had 4100 mAh left in it, which was interesting, and when it went back to 100% it had 4120 mAh which makes me think the OS wasn't actually reading the voltage and thought it was just draining the battery instead.
EDIT: Just realised I had my wall charger with me, battery was at 90% figured I would try, real quick to attempt to replicate the problem, I was unable to, with a direct battery connection, but it could be due to a voltage issue or be related to why plugging it in directly to the car charger resolved the issue. My gut feeling is, it has to do with the dock itself and the pins it uses.
my battery often is charging and it hits 93% and immediately jumps right to 100%. it skips the last 7% or so. i think what is happening is you just finally experienced this issue, which many of us have already posted about in battery threads, but it just happens to coincide with froyo so you are thinking its new and related. the nexus ever once in a while battery meter just gets thrown off and will jump up to 100% because it really was full, just had to catch up the meter. you really should pay attention to the voltage more than percentage, using battery life widget. i know my battery is fully charged at 4.172 volts. and sometimes it hits that but still only shows 94%, so it adjusts itself in one fell swoop.
The issue is I did an extra full charge about an hour ago so I can make it till midnight and it went through all the numbers from 89-100 with no issue
Sent from my Nexus One using XDA App
Addendum: Also it seems to be voltage is not that good of a decider of how much my charge is. Before Froyo, until I dropped below 94% I was always above 4 Volts, now I drop below 4 Volts at 96%.
So this morning I was able to replicate the problem, only it was outside of the car dock, I was able to get this problem to reoccur with the wall charger. I unplugged it from power, used it a little bit and then topped it off for the day, it was at 96%. I saw the green light go on, and thought nothing of it, 20 minutes later I went back to it and it was still at 96% and showed that the battery was fully charged.
I checked the Battery Left widget and it was saying the battery was fully charged even though it said 96% left also. I did make a crappy video uploaded to youtube from my backflip to show as well what I am talking about.
AFAIK, The green LED will light when you're anywhere above 90%. It's not a function of charge being complete. Check it.
Also, if you plugged it in with 96% - this is the behavior to be expected, since the phone won't start charging unless it has below 90% to begin with, and it'll show "Charged" - because it's not charging (to prevent overcharge).
Again, fail to see any problem in what you're describing.
Jack_R1 said:
AFAIK, The green LED will light when you're anywhere above 90%. It's not a function of charge being complete. Check it.
Also, if you plugged it in with 96% - this is the behavior to be expected, since the phone won't start charging unless it has below 90% to begin with, and it'll show "Charged" - because it's not charging (to prevent overcharge).
Again, fail to see any problem in what you're describing.
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Click to collapse
Yet my phone has always been able to charge when above 90% before froyo. This behavior is new to froyo for me at least.
Sent from my Nexus One using XDA App
It means that you've never paid attention to that until now. It's working this way since the phone was out (with stock Eclair) and if I'm not mistaken - it's not controlled by OS at all.
I did pay attention to such actually because of the fact that I had been getting piss poor battery life. This has never happened before. In the morning I would use the device a little then top it off because I noticed that works give better battery life.
Sent from my Nexus One using XDA App
Well, you had a buggy phone that has now corrected itself. Welcome to the way it was supposed to work from the beginning.
Topping off the battery at 90%+ contributes to battery degradation - heating from overcharging. So you were actually damaging your battery.
My battery never charges above ~76% when plugged in. After rebooting however, it is very much at 100% and lasts for a good amount of time. This is not necessarily a question, but I wonder if others are experiencing this too and if there is a fix? Read below.
I noticed that my battery life got very bad after installing custom roms. I also found out that this happened because I sometimes kept the phone plugged in while flashing, something that totally screws up the battery reading. So, I followed this guide to calibrate my battery and it worked.
Now, whenever the phone is plugged in it NEVER goes to 100% when charging. Maybe 80% if leaving it for a while (10 hours overnight). I'm worried about frying the battery. Is there a fix?
It is only a matter of presentation. It actually doesn't mean your batt is broken. Plug it and charge it overnight. Then discharge only for few percent and plug it back in. It should go to 100%.
Sent from my HTC Legend
Thanks, I'll give it a try.
What I'm concerned about is if the phone "thinks" the battery isn't recharged and keeps squeezing juice into it when in fact it is full (which a reboot will show)? That's not good for the battery. It should go into trickle charge after reaching 100%..
The process described in the desire forum is also known as formatting the battery. In fact most of battery manufacturers (lithium battery manufacturers) recommend doing this in a slightly different way:
Before first use:
1.) Before powering the device on, plug it in and let it charge until the LED is green (fully charged)
2.) Then take the battery out of the device and wait an hour (to make sure all the chemical processes in the battery are as idle as possible)
3.) Then plug it back in, while still off and let it charge untill green LED
4.) use the device....
You can practice this slightly modified with first step being:
Discharge the battery (by normal use)until only few percent are left (1 - 5 % are OK)
I've done these steps with my Mugen extended battery and I was getting around 4 - 5 days on Legend, now I'm getting 2 - 3 days on Desire S, but the ROM isn't very optimized yet, I believe it will be better in time...
Just one thing... Why is this in Development!?
No Idea.....
can mods move this?
BlaY0 said:
It is only a matter of presentation. It actually doesn't mean your batt is broken. Plug it and charge it overnight. Then discharge only for few percent and plug it back in. It should go to 100%.
Sent from my HTC Legend
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Click to collapse
sz1a did this solve your problem? Have the same problem with every firmware i've tried....
peddalion said:
sz1a did this solve your problem? Have the same problem with every firmware i've tried....
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Click to collapse
Definitely did not solve it but at least the battery performance is ok. It just stays at 78% for a few hours drops from there. Very weird but as long as the battery doesn't get broken I guess it's ok.
Do you have some 3rd party battery installed in your Legend? I have one 1,5 Ah in mine and it is acting the same way. It doesn't bother me too much coz it was cheap... it lasts 48 hrs with data always on and moderate usage. I noticed this that when I charge it overnight and it reaches 80%, unplugging it stays at 80% for several hrs and just after it starts dropping if I plug it again, meter reaches 100%. It's weird but as I said I can live with that
I've got exactly the same issue with stock 2.2 ROM. I've never rooted or CM my phone; I was wondering if CM would do it, but doesn't look like it.
android forums /htc-legend/265545-battery-doesnt-fully-charge.html
(sorry, I can't post links; maybe an admin can fix the link for me?
This seems to indicate it's a phone hardware fault and requires a new Legend to fix! My big worry is, as stated, that the charging light never goes green; therefore is pumping lots of power into a potentially full battery.
Ok I have a Motorola Atrix HD running Cyanogenmod 10.1.3 and using the EB40 battery.
1. I would like to know what charger I should be using, I have the 850mA motorola charger that came with my phone, a 1amp pantech charger, a ONN 1.2amp charger and a 1.5amp off brand charger. Also how long should this battery take to charge?
2. I would like any tips or tricks to extend my battery life, my longest charge yet has lasted 26 hours of heavy use (im also running Juice Defender Ultimate) and I keep seeing people talking about getting 3-3 and a half days out of one charge.
3. Is there anyway to make my built in battery meter more accurate it doesnt seem to be reading this battery properly
On a side note, I accidently deep discharged my EB40 when i was running the initial charge out, and it was plugged and unplugged several times trying to get the phone to power back on, Im wondering if i damaged my battery and if so is there a way to fix it?
Sorry for the extremely long question any help would be greatly appreciated.
Wolfeman781992 said:
Ok I have a Motorola Atrix HD running Cyanogenmod 10.1.3 and using the EB40 battery.
1. I would like to know what charger I should be using, I have the 850mA motorola charger that came with my phone, a 1amp pantech charger, a ONN 1.2amp charger and a 1.5amp off brand charger. Also how long should this battery take to charge?
2. I would like any tips or tricks to extend my battery life, my longest charge yet has lasted 26 hours of heavy use (im also running Juice Defender Ultimate) and I keep seeing people talking about getting 3-3 and a half days out of one charge.
3. Is there anyway to make my built in battery meter more accurate it doesnt seem to be reading this battery properly
On a side note, I accidently deep discharged my EB40 when i was running the initial charge out, and it was plugged and unplugged several times trying to get the phone to power back on, Im wondering if i damaged my battery and if so is there a way to fix it?
Sorry for the extremely long question any help would be greatly appreciated.
Click to expand...
Click to collapse
1. AHD could only pull 1A max. Beside good charger, you also need a good usb cable so that the power does not lost in transit. Install CurrentWidget to check how much power does your phone get while charging.
2. Minimum screen brightness, auto on/off data connection (LeanData app), undervolting? Battery consumption differs from phone to phone depending on how you use the phone, how good is your telco signal etc.
3. Perhaps you need to flash another rom? I'm on CM11 KitKat and the reading is fine. But battery life is not as good as stock JellyBean rom.
4. If your phone is dead after fully discharge, just leave it plugged in. after a while it will come to life.
pijes said:
1. AHD could only pull 1A max. Beside good charger, you also need a good usb cable so that the power does not lost in transit. Install CurrentWidget to check how much power does your phone get while charging.
2. Minimum screen brightness, auto on/off data connection (LeanData app), undervolting? Battery consumption differs from phone to phone depending on how you use the phone, how good is your telco signal etc.
3. Perhaps you need to flash another rom? I'm on CM11 KitKat and the reading is fine. But battery life is not as good as stock JellyBean rom.
4. If your phone is dead after fully discharge, just leave it plugged in. after a while it will come to life.
Click to expand...
Click to collapse
1.So the cable that came with the 1A pantech charger would be fine? what are the effects of using a small or larger charger? say the factory .85A? longer charge times?
2. Juice defender controls my screen brightness at roughly 40% normally (I have good eyes) data shuts off with screen unless traffic exceeds 100kb/s, undervolting? lots of social networking and texting, music player (rocket player), and a playing a power hungry game, 1-3 bars at home depending on were i put my phone, 4-5 bars else were
3. Is that stable or nightly? I only run stable roms due to my phone being my only source of internet and i have no back up phone
4. Good to know thanks :laugh:
Also on a 1A charger with quality cable CurrentWidget should be showing 1A(or 1000mA)? and were CurrentWidget shows battery current draw what is considered high?
sorry for all the question im kind of a noob to modding my phone i ran cyanogen mod on my OG Droid but never did any real modding on it phone ran faster and battery life actually increased, same on my AHD my battery life increased after flashing to cyanogenmod 10.1.3 i gained approx 3 hours over stock jellybean
pijes said:
1. AHD could only pull 1A max. Beside good charger, you also need a good usb cable so that the power does not lost in transit. Install CurrentWidget to check how much power does your phone get while charging.
2. Minimum screen brightness, auto on/off data connection (LeanData app), undervolting? Battery consumption differs from phone to phone depending on how you use the phone, how good is your telco signal etc.
3. Perhaps you need to flash another rom? I'm on CM11 KitKat and the reading is fine. But battery life is not as good as stock JellyBean rom.
4. If your phone is dead after fully discharge, just leave it plugged in. after a while it will come to life.
Click to expand...
Click to collapse
Wow that LeanData app is amazing, It's a shame that can't get the EB40 battery because It couldn't ship to my country so I need to live with the EB20 one.
Juice Defender Ultimate controls Data on/off Sync Screen brightness and timeout sound profiles based on schedules, bluetooth and cpu governer and clock speed if your rooted theres also controls for gps and wifi but i never uses those, i paid like $7 for it but i think it was well worth it on EB20 and stock jellybean i was averaging 10-11 hours of heavy use which was way better than my out the box 6-7 when i flashed to cyanogenmod and ran that with juice defender it increased to 13-16 hours, after adding the EB40 battery my shortest charge has been 18.5 hours, i was realy hoping to hit the 30 hour mark with all the people talking about going 3 and a half days on 1 charge
Wolfeman781992 said:
1.So the cable that came with the 1A pantech charger would be fine? what are the effects of using a small or larger charger? say the factory .85A? longer charge times?
2. Juice defender controls my screen brightness at roughly 40% normally (I have good eyes) data shuts off with screen unless traffic exceeds 100kb/s, undervolting? lots of social networking and texting, music player (rocket player), and a playing a power hungry game, 1-3 bars at home depending on were i put my phone, 4-5 bars else were
3. Is that stable or nightly? I only run stable roms due to my phone being my only source of internet and i have no back up phone
4. Good to know thanks :laugh:
Click to expand...
Click to collapse
1. EB40 is rated at 3200mAh (miliamp per hour). so in theory, a 1A charger will take 3.2 hours to fully charge it. a 2.1A charger will still take 3.2 hours. 0.85A charger will definitely take longer time. do correct me on this. and btw, AHD has the qualcomm quick charging feature built in. I'm guessing 3-4 hours to fully charge this phone from 0-100%.
2. Keep using JD if it already improves the battery life. when the phone gets 1-3 bars or in a place with low signal coverage, it will draw more power to get the coverage.
3. I think most KitKat rom based on the latest CM11 release are quite stable. you can read about them in the development threads.
Hi,
Using my N6 everyday since mid-2015, I'm considering replacing the battery with some ez30 models available on Amazon/Ebay.
Before doing that, I have a few questions :
- I often read bad reviews about batteries purchased on Internet. Is there a good and reliable place to buy one ?
- How to correctly measure the mAh remaining of my battery ?
- I installed AccuBattery telling me my battery is 91% capacity => 2932mAh out of 3220mAh. Is that reliable data after + 1,5 year of every day use ? I can't believe my battery is still that good today ^^
Thank you in advance
Hello,
Well, I bought my Nexus 6 in March 2015 and it still holding strong.
I also measured the battery with AccuBattery and it says the health is at 89% or 2872 out of 3220 mAh.
I read on some places that normally, batteries lose about 10% per year of its capacity, so I think the data is reliable.
With Android 7.1.1 stock + Franco kernel + encryption disabled and f2fs, I get 4h30 to 5h30 screen on-time, which I believe is on pair with many of the phones out there.
https://www.amazon.com/Cameron-Sino-Rechargeble-Battery-Google/dp/B01DNNJ5HE
Got above battery installed a week ago, I'll measure this battery and post my findings.
Most batteries can go on a long time as long they don't go bad(mine did).
seahorsepip said:
https://www.amazon.com/Cameron-Sino-Rechargeble-Battery-Google/dp/B01DNNJ5HE
Got above battery installed a week ago, I'll measure this battery and post my findings.
Most batteries can go on a long time as long they don't go bad(mine did).
Click to expand...
Click to collapse
Any findings to post yet?
Better than the OEM?
Curious if this is a good replacement as it's 3 times the price of an eBay "OEM"...
Hi there I just got my N6 phone back from a repair, they should of replace the battery but I don't think they have, after one full charge from phone being at 5% charged over night using the same app as you guys my battery health is at 48% 1,545mAh estimated capacity ..... design capacity is 3,220mAh before I sent it away it said my battery health was 60% ....do I have to give it a few more charges before I get a more accurate reading or would you say this is a genuine reading.
twics said:
Hi there I just got my N6 phone back from a repair, they should of replace the battery but I don't think they have, after one full charge from phone being at 5% charged over night using the same app as you guys my battery health is at 48% 1,545mAh estimated capacity ..... design capacity is 3,220mAh before I sent it away it said my battery health was 60% ....do I have to give it a few more charges before I get a more accurate reading or would you say this is a genuine reading.
Click to expand...
Click to collapse
UPDATE: Had to send my phone back a second time when it came back after the first charge I checked the battery health and it was 102% and the battery lasting all day and a half, so it seems they didn't replace the battery the first time.
i think this reading is so wrong, how can this be. still using original battery , never replaced.
updated screenshot after battery reset using bootloader logs reset then drained the battery to 0 let it shutdown then charge back to 100%.
does that mean i need a new battery ? @ktmom
fueled said:
updated screenshot after battery reset using bootloader logs reset then drained the battery to 0 let it shutdown then charge back to 100%.
does that mean i need a new battery ? @ktmom
Click to expand...
Click to collapse
Dunno about those stats. They're based on a small amount of data. My experience is based more on actual performance.
If resetting the bootloader logs improved the performance of the android reporting, if the device use time is deteriorating, and you deal with unexpected shutdowns, then I'd expect the battery to be the root cause.
I pushed my battery beyond those points and also experience problems turning the device off and on. The screen would go dark as though the device was off, but wouldn't respond to the charger. Long pressing the power button would shutdown the device. At its worst, plugging in the charger with the device off would not bring up the basic battery charging animation nor turn on the LED.
The original designed use for the LED was to indicate charging when the device is off. I would have to plug into a low power (computer) USB port for an hour or so, then unplugging and plugging back in would trigger the LED and the device off charging animation. At that point using the factory charger would work again. The drain time was abysmal at this point [emoji6]
"Good judgment comes from experience, and a lot of that comes from bad judgment." - Will Rogers
ktmom said:
Dunno about those stats. They're based on a small amount of data. My experience is based more on actual performance.
If resetting the bootloader logs improved the performance of the android reporting, if the device use time is deteriorating, and you deal with unexpected shutdowns, then I'd expect the battery to be the root cause.
I pushed my battery beyond those points and also experience problems turning the device off and on. The screen would go dark as though the device was off, but wouldn't respond to the charger. Long pressing the power button would shutdown the device. At its worst, plugging in the charger with the device off would not bring up the basic battery charging animation nor turn on the LED.
The original designed use for the LED was to indicate charging when the device is off. I would have to plug into a low power (computer) USB port for an hour or so, then unplugging and plugging back in would trigger the LED and the device off charging animation. At that point using the factory charger would work again. The drain time was abysmal at this point [emoji6]
"Good judgment comes from experience, and a lot of that comes from bad judgment." - Will Rogers
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Click to collapse
the performance actually is not bad. infact its smooth , but when the battery falls below 50 or 40% the phone will start giving me random shutdown.
but today i did something I would call extensive draining. after the bootloader logs reset, i let it drain to 0 then it shutdown, then i again reset the bootloader logs then it started and show me 10% battery so i let it drain again , then again same process repeated it showed me 8% twice. then after 4 times of doing this draining process i finally got it to 0% where it refused start and show me empty battery icon. then i connected the charger for 1 minute then started the phone and it showed me 1% and charging. and from that point i let it charge full 100%. now iam testing it. if it still shuts down then my battery is dying.
and why replacement batteries have 3025mah ? whereas the one that came inside the phone has 3220mah.
fueled said:
the performance actually is not bad. infact its smooth , but when the battery falls below 50 or 40% the phone will start giving me random shutdown.
but today i did something I would call extensive draining. after the bootloader logs reset, i let it drain to 0 then it shutdown, then i again reset the bootloader logs then it started and show me 10% battery so i let it drain again , then again same process repeated it showed me 8% twice. then after 4 times of doing this draining process i finally got it to 0% where it refused start and show me empty battery icon. then i connected the charger for 1 minute then started the phone and it showed me 1% and charging. and from that point i let it charge full 100%. now iam testing it. if it still shuts down then my battery is dying.
and why replacement batteries have 3025mah ? whereas the one that came inside the phone has 3220mah.
Click to expand...
Click to collapse
The shutdowns at or near 40-50% I feel are early warning signs. I totally understand why you did it, I would have done the same, but charging from full dead to fully charged is actually harder on the battery. It's ideal to charge only a percentage at a time. That said, I charge when it's convenient, without regard for care for the battery. I often leave the phone on a low current charger such as when I'm traveling. I got about 2.5 years on the original battery and bought a spare last month figuring it'll need to be replaced before I replaced the phone.
My only guess why there is a variance in replacement battery capacity is that the ability to be used as a replacement (size/wiring) is the criteria rather than the capacity.
"Good judgment comes from experience, and a lot of that comes from bad judgment." - Will Rogers
H, since I updated from miui 10 to miui 11 and even now that I have miui 12 I have noticed that the battery doesn't last as long as before. I state that since I purchased the phone (July 2019) I have always charged the battery in the best way trying to never go below 20% and trying not to go beyond 80% so I don't think a battery can lose more than 30% of its real capacity in less than a year of life. Starting to investigate I found that the battery does not charge at its real capacity i.e. 3300 mAh but at around 2200/2300 mAh. To verify all this I have carried out several tests and the easiest way to verify it is to look at the battery characteristics through the AIDA64 app (screenshot below). From these tests it seems that the device limits the real battery capacity by not allowing it to be charged to its maximum capacity. A reply to what I wrote can be found by looking at some system files that are located in /sys/class/power_supply/battery. In particular, looking at the file called charge_full (screenshot below) you can see how the value of the file is much lower than the real battery capacity. I hope someone more competent than I can understand how to solve this hateful problem and I also invite you to check the value to try to better understand the cause of this problem.
I'm using miuimix 12.0.2 stable and the capacity is not 3300, either.
---------- Post added at 10:03 AM ---------- Previous post was at 09:59 AM ----------
And sorry i don't know how to post a picture, mine is 2943.
I know that batteries won't be forever and are always decreasing during the year but I think Xiaomi do a good job. I have some devices from 4 years ago and they reduced their batteries just a little. In the case of Mi 9 I have it since March 2019 and my battery still being the same. I charge it from 10-25% to 100% just some times I charge it until 80-90%, maybe every month I let it to 0% I wait for a while and charge it again to 100%.
Sent from my MI 9 using Tapatalk
From the photo you posted it doesn't seem that your battery is fully charged .. we have done other research and we have discovered that most likely Xiaomi has inserted in the kernel a sort of programmed obsolescence on the battery.
Can you disclose some of the research you done on the kernel it seems interesting. I have checked with Aida64 my battery before and it never charges to 3300 even if you leave the phone plugged in the value will keep increasing but once you plug it out it drops...still getting about 5 hrs sot so not bad...I wonder if you change that value in the full charger screen you posted what will happen?
"From these tests it seems that the device limits the real battery capacity by not allowing it to be charged to its maximum capacity. "
Actually it's better for battery life longterm to keep the device in the middle - never 0, never 100
I've certainly lost no battery life in the year + I've had the Mi 9
You are doing a good job of using the phone in the 20 to 80% range. But do you charge it at the lowest possible temperature? Temperature is a battery's worst enemy. Wireless charging is a joke. It's a glued heater in the battery.
I for instance, almost all the times charge it in front a mini fan. With this I can charge it 5ºC below normal temp charge.
And like @cezikos said, use quickcharge only on emergencies. Use at max a 1.5Amps charger. Quick charge is a marketing thing. The chemistry of the batteries are almost the same in this 10 years.
Mi mi9 have one year and the battery is 100%.
The important thing that you should precise is a type of charger that you are using. Do you use Quick Charge? If Yes, then battery capacity will be dramatically degrated. I use 5V 0.5-1.5A charger, it depends how fast I need to charge the Phone.
The next thing is a battery temperature, not Only while charging the Phone but also when you are using it. I`m using CPU Monitor and it's overlay to see the battery temp, you can also configure alerts when battery is starting to overheat.
Heavy Gaming decreases the life of the battery, there are a lot of variables that you have to cobsider, not only "programmed obsolescence"
I had the same problem. Hopefully the battery could make 3 hours of screen, the strange thing was that suddenly it began to last very little, and I was with that problem for a couple of weeks, so I decided to calibrate the battery hoping to have some results and now the battery lasted again approximately 7 hours of screen. Try to make the battery run out from 100% to 0%. The system will not let you start because it calculates that it has no battery, so what I did was leave it in recovery mode and with the screen always active, until it turns off completely, then with a 5V 1A charger. With the phone turned off, charge it until it reaches 100%. I did it three times and the battery was back to the way it was before. You could try to do the same and I hope you can solve that problem.
Sorry for bad English
I tested, I put the phone to play videos until it turned off. In 1% I cleared battery stats.
Then plugged the charger and entered the TWRP and unplugged. Put the backlight to maximum, and the phone stayed on more than an hour!
Then I plugged the charger 1.5A and let it charge to max.
It worked, now the phone has a steady discharge, not discharge 100% to 80 in an hour.
I will do this procedure from time to time. not the best for the battery, but is needed in mi9...
It's an absurd that this problem exists in 2020, my galaxy S2 don't have such harsh problems with something so simple and basic like battery management!
Battery on my Mi9 (mildly used in one year) lost 500 mAh.
Confirmed, with this trick, in doing it ONE time, I have the phone running well again, more than 8h screen on.
0.5 discharge in sleep.
.eu 20.3.19
onolox said:
I tested, I put the phone to play videos until it turned off. In 1% I cleared battery stats.
Then plugged the charger and entered the TWRP and unplugged. Put the backlight to maximum, and the phone stayed on more than an hour!
Then I plugged the charger 1.5A and let it charge to max.
It worked, now the phone has a steady discharge, not discharge 100% to 80 in an hour.
I will do this procedure from time to time. not the best for the battery, but is needed in mi9...
It's an absurd that this problem exists in 2020, my galaxy S2 don't have such harsh problems with something so simple and basic like battery management!
Click to expand...
Click to collapse
Thanks! I just don't know how to clean the battery status...
You will need root.
Then are several apps that can do it. Like l speed or adiutor.
And now again confirming, in one month the phone is completely lost regarding battery again, just 3h SOT from 80 to 20. There's some pretty **** up code regarding battery in xiaomi android.
I have no problems at all using it since release.
newest xiaomi eu.
I also have problems with battery drain...
Hello guys, just want to share with you a little trick that just helped me get better SoT. First of all, I just want to mention that I'm on the newest xiaomi.eu rom (20.8.13) and that AccuBattery is showing that my battery is at 2500mAh estimated capacity. (That might be different in reality, because it's only after one charging, so don't believe it that much). Lately I noticed a significant drain while the phone was idle (screen turned off). It was draining like 1-2% every hour and I could barely get over 5h SoT. So I investigated a little bit, and found a solution on reddit. The thing was that I had many apps on autostart. If you want to check them and turn it off then open Settings > type 'autostart' in the search bar > open it > 3 dots > show system apps > turn off every unnecessary app that you think don't need that option. I turned off every app, except: Gmail, GPay, Google Photos, Clock, Calendar, Bank app, Weather app and the app called 'safety system addon' - it might be called different because I'm not on english language on my phone. I left them on just in case to have notifications/synchronization, though i don't know if it's necessary. After that there was almost 0% idle drain over the day. Now I'm on 5h4m SoT and still have 25% of battery left. The result might be even better, cause I did this trick just today while my phone was on 90-85%.
Give it guys a try, hope it will improve your daily experience with Mi 9.
P.S. Let me know guys If I could turn off the before mentioned apps and still get notifications and sync from them.
Mine reports 2800mah, debloated with Szaki tool all autostart apps disabled also did factory reset after miui12 update.
Really sad how bad miui12 has turned for me. Im having way worse battery life compared to miui11 the idle is mostly the same its just the battery doesn't last as it used to last with miui11.
onolox said:
I tested, I put the phone to play videos until it turned off. In 1% I cleared battery stats.
Then plugged the charger and entered the TWRP and unplugged. Put the backlight to maximum, and the phone stayed on more than an hour!
Then I plugged the charger 1.5A and let it charge to max.
It worked, now the phone has a steady discharge, not discharge 100% to 80 in an hour.
I will do this procedure from time to time. not the best for the battery, but is needed in mi9...
It's an absurd that this problem exists in 2020, my galaxy S2 don't have such harsh problems with something so simple and basic like battery management!
Click to expand...
Click to collapse
I can confirm this. AIDA64 said my battery was at 2550mah capacity when fully charged. I followed this procedure and now after being fully charged, it says 3125 mah, which is much better.
I'm curious about the screen on time now. Me happy. Thanks!