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So...I don't think this has been brought up here before, so I figure I'll be the dummy who asks. If I recalibrate (bump charge), and wipe battery stats, is it safe to assume that swapping out batteries (spares) will mess this up? I plan on picking up a spare battery, but wondered about this. Any input? Thanks in advance.
Not sure about the "bump" policy around here. but...........BUMP
Just charge the battery and use the phone. Don't get caught up in the whole wipe stats to create longer battery life craze.
I just swap batteries when needed about midday. I ignore the battery stats. They don't affect my use of the phone.
newter55 said:
Just charge the battery and use the phone. Don't get caught up in the whole wipe stats to create longer battery life craze.
Click to expand...
Click to collapse
I understand that wiping stats does not "improve" battery life. but I have no problem believing that with a recalibrated battery (@ 100%), wiping stats will help the phone/battery meter "read" more correctly.
ua549 said:
I just swap batteries when needed about midday. I ignore the battery stats. They don't affect my use of the phone.
Click to expand...
Click to collapse
I thought so too, but I believe coupling it with a bump charge helped me a lot. I'll explain:
I recalibrated my battery about a week ago, (didn't know about wiping stats) I improved by about 3 or 4 hours daily, bringing me up to about 15 hours of use on a charge.
However,before I posted this thread, I did a recalibrate along with a wipe, then allowed the battery to drain and then a complete recharge. As of right now (27 1/2 hours later) I'm still looking at 30%
However, thats not why I started this thread though, I am simply wondering if swapping batteries back and forth will affect the stats and how the phone reads the state of the battery. (makes sense that it would I guess)
any input on THAT would be awesome, thanks in advance.
True. Unplugging the charger as soon as it shows 100% won't give you a full charge since it's not really accurate. I believe the charge complete notification is triggered by the charger shutting down. Not positive but I have noticed that can be triggered at varying times after 100% is reached.
Swapping batteries does mess it up but I can't say how much. There's always going to be a difference in charge between the two, and depending on different brands, a difference in the battery capacity and voltage at different % levels.
In short: The charge circuit measures amps going in and coming out, and remembers voltage levels at different times, so swapping batteries or using external chargers probably confuses it a bit.
Would it be possible to just create a separate batterystats file for the spare battery and swap out the files when the batteries get swapped out?
There was a post recently by a Google engineer, Dianne Hackborn (can't link yet, just google "Dianne Hackborn battery stats" and you should find it).
It explains that the battery stats come from data/system/batterystats.bin and are reset every time you unplug with a "relatively full charge." The file is reflected in the battery use screen.
It won't affect how much battery level is shown to you or how long your battery lasts.
Hi there. New here.
I have a Galaxy S I9000 running CM7.1.
Recently, I have bought one of these fat batteries from here:
dealextreme.com/p/3-7v-3500mah-high-capacity-battery-pack-with-back-cover-for-samsung-i9000-galaxy-s-54276
I did not have much expectations, but the reviews were pretty positive, so I went for it.
To my "surprise", the thing did not work much better than the original battery. Obviously I went around looking for what could be the issue (I did not give up on it just yet), and I found all sorts of data about "battery calibration" techniques and such.
I charged the thing to 100%, and used the "battery calibration" APP from the Market. Did a reboot, and took it for a spin (day of avg. usage). Nothing changed about the performance of the battery.
I gave up and returned the old battery. Re-did the calibration procedure from above ("just in case").
To my surprise, all these games apparently "damaged" the battery life of the original battery somehow!
I got down to 50% charge after 10hrs of *no usage* at all (The battery stats show 40% for "cell standby"). No CPU intensive processes were running during this time.
Now, it's obvious that the battery itself did not get damaged in any way. What this does show, however, is that this "calibration" procedure did have some unexpected "persistent" impact.
One thing for sure, is that I do not understand what actually happens during this "calibration" procedure. From what I read, it deletes some "battery stats" file that is later regenerated by the OS over time.
My questions are as follows:
1) Any one seen anything like this before?
2) Will the "life" of the original battery "improve" as time goes by (as the battery stats are collected), or am I screwed without doing something about it?
3) Is there still hope for the fat battery I bought? Seeing that there are significant "energy losses" dues to some software calibration issues.
4) Is there a "right" way for switching between batteries with different capacities?
4) Anyone can recommend some APP that shows better stats about the battery? For instance, a representation of the contents of this "battery stats" file? How many MAHs the battery "has"? Any kind of interesting "debug" data?
I'd really love to have my (battery) life back.
Thanks.
Bump.
Anyone?
http://forum.xda-developers.com/showthread.php?t=1283316
Sent from my GT-I9000 using xda premium
keyme said:
Hi there. New here.
I have a Galaxy S I9000 running CM7.1.
Recently, I have bought one of these fat batteries from here:
dealextreme.com/p/3-7v-3500mah-high-capacity-battery-pack-with-back-cover-for-samsung-i9000-galaxy-s-54276
I did not have much expectations, but the reviews were pretty positive, so I went for it.
To my "surprise", the thing did not work much better than the original battery. Obviously I went around looking for what could be the issue (I did not give up on it just yet), and I found all sorts of data about "battery calibration" techniques and such.
I charged the thing to 100%, and used the "battery calibration" APP from the Market. Did a reboot, and took it for a spin (day of avg. usage). Nothing changed about the performance of the battery.
I gave up and returned the old battery. Re-did the calibration procedure from above ("just in case").
To my surprise, all these games apparently "damaged" the battery life of the original battery somehow!
I got down to 50% charge after 10hrs of *no usage* at all (The battery stats show 40% for "cell standby"). No CPU intensive processes were running during this time.
Now, it's obvious that the battery itself did not get damaged in any way. What this does show, however, is that this "calibration" procedure did have some unexpected "persistent" impact.
One thing for sure, is that I do not understand what actually happens during this "calibration" procedure. From what I read, it deletes some "battery stats" file that is later regenerated by the OS over time.
My questions are as follows:
1) Any one seen anything like this before?
2) Will the "life" of the original battery "improve" as time goes by (as the battery stats are collected), or am I screwed without doing something about it?
3) Is there still hope for the fat battery I bought? Seeing that there are significant "energy losses" dues to some software calibration issues.
4) Is there a "right" way for switching between batteries with different capacities?
4) Anyone can recommend some APP that shows better stats about the battery? For instance, a representation of the contents of this "battery stats" file? How many MAHs the battery "has"? Any kind of interesting "debug" data?
I'd really love to have my (battery) life back.
Thanks.
Click to expand...
Click to collapse
1) You're running CM7 which is known to be a battery hog so dont expect phenomenal battery life with it. Also a lot of the aftermarket batteries are fakes with their actual mAH being even lesser than that of the original samsung battery the i9000 ships with. And the battery you bought costs $15 which is way too cheap for a 3500mAH battery which basically means the battery is a fake and you were ripped off.
2) After deleting the battery stats during the calibration process it takes a few charge-discharge cycles for the battery 'life' to improve. Give it a week to settle in.
3) there is no hope for the battery you bought, unless you can return it for a refund maybe? if you cant return it, you might want to take off the battery label and see the actual mAH of the fat battery (as this is sometimes printed on the plastic shell of the battery underneath the label).
4) When switching batteries you simply run the battery calibration after you've fully charged the new battery in your handset and then you drain it until the phone fails to boot. Then you charge it to 100% without turning the handset on
5) Battery Monitor Widget is an app you might want to take a look at but it does not have the exact battery capacity for each phone pre-fed into its databases since the battery capacities vary with the manufacturer and model of each handset. It relies on you entering the exact battery capacity from your battery label into the application before it can function properly.
Thanks for the response.
I'll do a few charge / discharge cycles, and see if it improves over the week.
Just for science, I peeled off the label of the fat battery and found no useful data there. Only some kind of S/N which did not show any results on Google.
Shame. I guess I'll just leave a negative review for the battery and be smart enough the next time.
My XT1092, recently got updated to Lollipop i.e. Android 5.0
Two of my battery runs, starting from 100% full charge came down to like 5% and the phone shut down automatically as if it was 0%
Also on a side note, i did not put any mode on the battery saver mode for those two runs.
Now to test it, i kept my battery saver to start at 5% but i am not sure if it will run at 5% or just shut down
Anyone got an idea/solution for this issue ??
P.S. Even Motorola care chat, does not have an answer, all they said is to keep my phone in safe mode for a day and check it out....
Mine just did this the other day. When I pressed the power button it showed the battery with a little red fill and a huge yellow triangle with an exclamation mark in it. Also happened last night.
I have also had the same issue xt1092 and on lollipop.
well...
yea man, so the thing is motorola support said that, keep ur phone in safe mode for a day and recheck the issue...
so idk... :/
i am checking my battery use and for now i have kept my battery saver on 5% so i hope it starts on battery saver itself.. rather than shutting down...
My XT1095 does the same thing. Really annoying! Its really lying to you about how much battery is left if its going to do that. I just know that if i'm going below 10% i better run to find a charger ASAP!
M3drvr said:
My XT1095 does the same thing. Really annoying! Its really lying to you about how much battery is left if its going to do that. I just know that if i'm going below 10% i better run to find a charger ASAP!
Click to expand...
Click to collapse
it is quite misleading to say the least..
i did not have this issue with KitKat though..
might be a lollipop thing only
I'll join this list. Really annoying, and never happened on 4.4.4
I've never let my battery get that low honestly, but...
Keep in mind that your battery percentage is completely an estimate. Battery capacity is measured in mAh, but there's no way to measure the current charge capacity in mAh of a battery. The only way to do so would be to run all of the power out of the battery and record the power over time, but then you'd have a dead battery. As a result, the system estimates your remaining battery capacity as a percentage based on the current voltage of the battery. But that can be different depending upon how quickly you've drained the battery and other factors.
So, Android has methods built-in which automatically calibrate the battery, but they only work properly if you fully charge and discharge your device on a regular basis. A battery starts off weak, then it gains strength after a few charging cycles, finally over time it peaks and then begins to taper off as far as battery life goes.
You've likely not taken your device to 0% for a while. The android solution is to fully discharge and recharge your battery a few times to allow it to recalibrate. Slow charging is the best for recalibration. Plug it into a computer for 500mAh charging rather than using a charger. Chargers can charge quicker(1.5A) but do not allow the device to calibrate as well due to the high amperage.
So, just use your device and let it drain fully, and charge fully on a computer USB port and it should recalibrate itself.
InspectifierWrectifier said:
So, Android has methods built-in which automatically calibrate the battery, but they only work properly if you fully charge and discharge your device on a regular basis. A battery starts off weak, then it gains strength after a few charging cycles, finally over time it peaks and then begins to taper off as far as battery life goes.
You've likely not taken your device to 0% for a while. The android solution is to fully discharge and recharge your battery a few times to allow it to recalibrate. Slow charging is the best for recalibration. Plug it into a computer for 500mAh charging rather than using a charger. Chargers can charge quicker(1.5A) but do not allow the device to calibrate as well due to the high amperage.
So, just use your device and let it drain fully, and charge fully on a computer USB port and it should recalibrate itself.
Click to expand...
Click to collapse
While it does help the calibration, it's very bad for your battery to do this deep discharge multiple times.
raptir said:
I've never let my battery get that low honestly, but...
Keep in mind that your battery percentage is completely an estimate. Battery capacity is measured in mAh, but there's no way to measure the current charge capacity in mAh of a battery. The only way to do so would be to run all of the power out of the battery and record the power over time, but then you'd have a dead battery. As a result, the system estimates your remaining battery capacity as a percentage based on the current voltage of the battery. But that can be different depending upon how quickly you've drained the battery and other factors.
Click to expand...
Click to collapse
Sometimes you don't have a choice about letting battery drain get that far.
But regardless, its most definitely an issue with lollipop. Uncountable android devices, and this is the first time I've ever experienced this issue. Happens religiously at 5%. So its never happened before on any device I've used, including this moto x pure on KitKat, and it always happens at 5%.
If it were a true calibration issue, one would think it'd happen at different percentages. However I'm certain this is a bug.
qwerty12601 said:
Sometimes you don't have a choice about letting battery drain get that far.
But regardless, its most definitely an issue with lollipop. Uncountable android devices, and this is the first time I've ever experienced this issue. Happens religiously at 5%. So its never happened before on any device I've used, including this moto x pure on KitKat, and it always happens at 5%.
If it were a true calibration issue, one would think it'd happen at different percentages. However I'm certain this is a bug.
Click to expand...
Click to collapse
I understand that you don't always have a choice, I just meant that I have no insight as to the possible bug since I've never experienced it. And to clarify, it's not really a "calibration" issue, it's a matter of there is no way to accurately measure the charge of the battery.
Honestly, Google could have even implemented this intentionally in order to prevent damage to the battery from a deep discharge.
raptir said:
I understand that you don't always have a choice, I just meant that I have no insight as to the possible bug since I've never experienced it. And to clarify, it's not really a "calibration" issue, it's a matter of there is no way to accurately measure the charge of the battery.
Honestly, Google could have even implemented this intentionally in order to prevent damage to the battery from a deep discharge.
Click to expand...
Click to collapse
But android has been completely accurate in the past. Right down to 1 single percent.
And there's no way google implemented this as a safety feature. If they were legitimately trying to do this, they'd just have the battery monitor read less than actual capacity as to not confuse the operator.
As well as they have what they believed to be a big feature, "battery saver" which has the option to activate at 5%. So them killing your phone at 5% intentionally doesn't hold water.
qwerty12601 said:
But android has been completely accurate in the past. Right down to 1 single percent.
And there's no way google implemented this as a safety feature. If they were legitimately trying to do this, they'd just have the battery monitor read less than actual capacity as to not confuse the operator.
As well as they have what they believed to be a big feature, "battery saver" which has the option to activate at 5%. So them killing your phone at 5% intentionally doesn't hold water.
Click to expand...
Click to collapse
No it hasn't. It may not have shut down until after it read 1%, but it has not been accurate because there is no accurate way to measure the current charge of a battery.
http://batteryuniversity.com/learn/article/how_to_measure_state_of_charge
The fact that it consistently shuts down at 5% does seem like a bug, but it's a very odd bug since it seems like there would have to be some code to specifically tell the phone to shut down.
raptir said:
No it hasn't. It may not have shut down until after it read 1%, but it has not been accurate because there is no accurate way to measure the current charge of a battery.
http://batteryuniversity.com/learn/article/how_to_measure_state_of_charge
The fact that it consistently shuts down at 5% does seem like a bug, but it's a very odd bug since it seems like there would have to be some code to specifically tell the phone to shut down.
Click to expand...
Click to collapse
Every android device I've owned, probably 12, including the 3 still in service with me (moto x before lollipop, nexus 7, nexus 4) all have accurate battery meters right down to 1%. Now are they adjusting on the fly and lowering/raising battery percent to accurately match calculations? Probably. But it adjusts to where the battery meter will read down to the very last percent. No surprises.
The whole point of this thread us that some moto x pures are shutting down at 5%. Maybe the battery really is at 0%, maybe its at 5 or 10%, but its a "bug" that the phone is shutting off at 5%. Its rather a flaw in on the fly calculations where its not accurately adjusting at lower percentages, or a software flaw. But it's a bug either way. That's the complaint here.
raptir said:
Honestly, Google could have even implemented this intentionally in order to prevent damage to the battery from a deep discharge.
Click to expand...
Click to collapse
That is was Microsoft did with their Surface tablets, you can change it, I have mine set to power off at 10%
raptir said:
While it does help the calibration, it's very bad for your battery to do this deep discharge multiple times.
Click to expand...
Click to collapse
Wrong. this is the recommended way to use every mobile phone battery. A full charge and discharge is called a cycle, and cycles are how battery lives are rated.
InspectifierWrectifier said:
Wrong. this is the recommended way to use every mobile phone battery. A full charge and discharge is called a cycle, and cycles are how battery lives are rated.
Click to expand...
Click to collapse
Please don't just post "wrong" without anything to back it up.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Table 2 provides details as to why what I said is correct. A 50% discharge will not degrade to 70% capacity for 3-4x as many cycles as a 100% discharge. That amounts to up to double the useful life of the battery assuming your usage stays the same.
InspectifierWrectifier said:
Wrong. this is the recommended way to use every mobile phone battery. A full charge and discharge is called a cycle, and cycles are how battery lives are rated.
Click to expand...
Click to collapse
Have fun killing your battery very quickly by fully discharging all the time
raptir said:
Please don't just post "wrong" without anything to back it up.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Table 2 provides details as to why what I said is correct. A 50% discharge will not degrade to 70% capacity for 3-4x as many cycles as a 100% discharge. That amounts to up to double the useful life of the battery assuming your usage stays the same.
Click to expand...
Click to collapse
Mobile device batteries are designed to be "fully" depleted. They are software controlled. You will never discharge a properly controlled battery 100%. This is why your device still has power to turn on and tell you that the battery is too low to turn on.
There are always exceptions to the rule. However, mainstream devices will almost always keep the battery at a safe level.
You cannot use a single chart on all lithium ion batteries. In fact, every one is different due to chemical and annode/cathode changes. This is why every battery has its own MDS for shipping purposes.
The small changes to batteries cause them to react differently to different usage patterns. When designing a battery these reaction patterns are supposed to be accounted for in the battery calibration.
A key engineering principal: a device should never be capable of destroying itself. Full discharge is normal operation for most devices.
I just bought my Z3C a couple of days ago. First thing I did was charge it fully and then I started using it. It went from 100 to 0% in about 21 hours. During that time a SIM card was inserted only during the last couple of hours, but I did use the phone fairly often. The attached thumbnails show the details.
I did notice that it almost loses no charge in standby. But today I noticed an increased decline during screen on time after standby time. See last screenshot attached.
I expected more from this battery based on reviews and Sony's claims. Is this normal or is my battery faulty? While some here report similar numbers, others seems to get a lot more out of their batteries.
Amplifiction said:
I just bought my Z3C a couple of days ago. First thing I did was charge it fully and then I started using it. It went from 100 to 0% in about 21 hours. During that time a SIM card was inserted only during the last couple of hours, but I did use the phone fairly often. The attached thumbnails show the details.
I did notice that it almost loses no charge in standby. But today I noticed an increased decline during screen on time after standby time. See last screenshot attached.
I expected more from this battery based on reviews and Sony's claims. Is this normal or is my battery faulty? While some here report similar numbers, others seems to get a lot more out of their batteries.
Click to expand...
Click to collapse
You shouldn't expect more from this battery based on reviews, you should just look at what some people got out of their phones.
Give the phone some time to settle in. And don't forget that it's almost summer for us now, more sun means using the screen at a higher brightness so that will also have some impact on your battery life.
Look what kind of useless apps are running in the background and stop them and don't worry about the estimate, it really doesn't mean much. Right now my estimate is 9 days, because I barely touched my phone.
I really don't believe in such a thing as faulty battery. Charge your phone, restart it and see how it reacts then.
Is Stamina mode enabled? If not, then what you have is typical. Getting a full day out of one charge is about all you can expect from a smartphone without some form of battery saving measures enabled.
Dsteppa said:
You shouldn't expect more from this battery based on reviews, you should just look at what some people got out of their phones.
Give the phone some time to settle in. And don't forget that it's almost summer for us now, more sun means using the screen at a higher brightness so that will also have some impact on your battery life.
Look what kind of useless apps are running in the background and stop them and don't worry about the estimate, it really doesn't mean much. Right now my estimate is 9 days, because I barely touched my phone.
I really don't believe in such a thing as faulty battery. Charge your phone, restart it and see how it reacts then.
Click to expand...
Click to collapse
I'd indeed like to hear from people whether or not they get comparable performance. Do you? I'll keep an eye on my battery during the next few days. So you think this is not abnormal?
PuffDaddy_d said:
Is Stamina mode enabled? If not, then what you have is typical. Getting a full day out of one charge is about all you can expect from a smartphone without some form of battery saving measures enabled.
Click to expand...
Click to collapse
I'm not sure at what point I turned on Stamina in the battery cycle I posted. It is turned now, however, and I hope it will make a difference. What do you get out of your Z3C?
Amplifiction said:
I'd indeed like to hear from people whether or not they get comparable performance. Do you? I'll keep an eye on my battery during the next few days. So you think this is not abnormal?
Click to expand...
Click to collapse
Here are my results:
http://forum.xda-developers.com/showpost.php?p=59933232&postcount=48
At the moment I have 3d 10h battery life and still 40% left. Tomorrow after work @ 12 our time I'll charge my phone again, so that's almost 5 days.
(But that's with a lot of idle time)
(Vergeet geen apps te freezen en je telefoon te restarten)
With moderate usage, you should generally expect just about 2 full days of battery life from this phone. And that is with Stamina mode enabled to help the phone sleep when the screen is off. However, this is not accounting for any extreme measures some people take to extend their battery life (e.g. disabling background data/sync). Once you remove these features, you're no longer using the smartphone as it was intended, so it's not a fair comparison.
I can easily get 2 days out of my Z3C before I think about charging it. And I've never used Stamina Mode.
I guess I could install some app to monitor battery usage and stats but I'm not that bothered tbh.
We all manage a variation on the smartphone thing, in terms of data, wifi, gaming, emails, browsing, texts, calls, etc, and its slightly different, in terms of use, from one user to another.
I'd echo the sentiments of another user who said give your battery time to settle in. Give it a full charge, discharge cycle a couple of times, and don't worry too much about it!
Peace.
Thanks for your feedback, guys. I'm currently fully charging and discharging my battery. Several cycles complete.
The best result I've gotten so far is a little under two days with moderate usage and thorough measures to increase battery life. I turn on airplane mode when I go to sleep. Stamina mode is also enabled, but only the reduced performance part. I'm also using 2battery, which turns off WiFi and data when phone is in standby, and turns them back on briefly every 15 minutes. (While I agree that turning off data connections defeats the purpose of a smartphone, I also believe that there is no need for a constant connection when I'm not using my phone. 2battery achieves that. Although I must say it doesn't seem to kick in a lot on lollipop.)
So despite these measures my battery seems weak compared to yours. Anyway, I'll be taking your advice and I'll give it some more time.
Sent from my D5803 using XDA Free mobile app
Amplifiction said:
Thanks for your feedback, guys. I'm currently fully charging and discharging my battery. Several cycles complete.
The best result I've gotten so far is a little under two days with moderate usage and thorough measures to increase battery life. I turn on airplane mode when I go to sleep. Stamina mode is also enabled, but only the reduced performance part. I'm also using 2battery, which turns off WiFi and data when phone is in standby, and turns them back on briefly every 15 minutes. (While I agree that turning off data connections defeats the purpose of a smartphone, I also believe that there is no need for a constant connection when I'm not using my phone. 2battery achieves that. Although I must say it doesn't seem to kick in a lot on lollipop.)
So despite these measures my battery seems weak compared to yours. Anyway, I'll be taking your advice and I'll give it some more time.
Sent from my D5803 using XDA Free mobile app
Click to expand...
Click to collapse
I have like never used Stamina mode, try out these apps:
https://play.google.com/store/apps/details?id=com.rootuninstaller.batrsaver
https://play.google.com/store/apps/details?id=com.oasisfeng.greenify
https://play.google.com/store/apps/details?id=com.asksven.betterbatterystats
You need to be rooted tho (Which shouldn't be a problem)
Are you using GPS or is it always on?
Your battery is fine. You probably lost some standby life when you put a SIM in it, as that would cause your cell radios to begin seeking your carrier's towers.
Do activate Stamina mode if you haven't already done so.
Dsteppa said:
I have like never used Stamina mode, try out these apps:
https://play.google.com/store/apps/details?id=com.rootuninstaller.batrsaver
https://play.google.com/store/apps/details?id=com.oasisfeng.greenify
https://play.google.com/store/apps/details?id=com.asksven.betterbatterystats
You need to be rooted tho (Which shouldn't be a problem)
Are you using GPS or is it always on?
Click to expand...
Click to collapse
Thanks for the pointers! I have Better Battery Stats, and will give the other two a go. Sounds like DS Battery Saver goes beyond 2Battery, which just manages data and wifi. It can also kill apps, but I suppose you use Greenify for that?
I am indeed rooted. GPS is always on as far as I know. Haven't really paid attention to it. Why do you ask? Does that consume a lot of power?
Amplifiction said:
Thanks for the pointers! I have Better Battery Stats, and will give the other two a go. Sounds like DS Battery Saver goes beyond 2Battery, which just manages data and wifi. It can also kill apps, but I suppose you use Greenify for that?
I am indeed rooted. GPS is always on as far as I know. Haven't really paid attention to it. Why do you ask? Does that consume a lot of power?
Click to expand...
Click to collapse
Well yeah of course GPS uses a lot, especially when you don't use it, it's just wasted energy so to speak.
Greenify lets apps go to sleep earlier/faster so that they can cause less wakelocks.
With Greenify and DS BS I don't need Stamina mode and many of us are even wondering if Stamina is working most of the times, these two apps I'm certain that they work.
Dsteppa said:
Well yeah of course GPS uses a lot, especially when you don't use it, it's just wasted energy so to speak.
Greenify lets apps go to sleep earlier/faster so that they can cause less wakelocks.
With Greenify and DS BS I don't need Stamina mode and many of us are even wondering if Stamina is working most of the times, these two apps I'm certain that they work.
Click to expand...
Click to collapse
Well, I've been keeping an eye on it for the past week, and I seem to be losing next to no charge when screen is off. My phone is in deep sleep over 75% of the time. (According to Better Battery Stats)
I do seem to be losing 1% charge for every 3 minutes or so while my screen is on. Is that normal? We're not talking gaming or anything demanding, just some browsing and messaging.
Amplifiction said:
Well, I've been keeping an eye on it for the past week, and I seem to be losing next to no charge when screen is off. My phone is in deep sleep over 75% of the time. (According to Better Battery Stats)
I do seem to be losing 1% charge for every 3 minutes or so while my screen is on. Is that normal? We're not talking gaming or anything heavy, just some browsing and messaging.
Click to expand...
Click to collapse
I think the best way to measure if it's correct or not, to for example put some movies on your phone and let them play constantly, see how long your phone can manage.
You should get at least 6 hours of on screen time using that method
It's too late to say this, but after getting a new battery/phone you should always drain it fully and then fully charge the battery so that the battery has a proper charge (it saves a lot of battery capacity and battery life)
Sent from my D5833 using XDA Free mobile app
nzzane said:
It's too late to say this, but after getting a new battery/phone you should always drain it fully and then fully charge the battery so that the battery has a proper charge (it saves a lot of battery capacity and battery life)
Sent from my D5833 using XDA Free mobile app
Click to expand...
Click to collapse
Good that it's too late, because it's incorrect. This suggestion dates back to the days of NiCd batteries which had "memory effect". Li-Ion batteries found in modern devices for at least the last several years and definitely since the beginning of Android don't have this effect, but have something else - when you drain the battery completely, you cause damage to the battery cells, and it can withstand only a few of these full-draining cycles before losing significant part of its charge capacity. This is why both laptops and phones have protective measures to turn off the phone completely before the battery reaches a dangerous drained state. And as the batteries go bad and their "low percentage" scale becomes unreliable (not able to sustain operation currents with low charge), these protective mechanisms can fire too late - which in turn can cause storage corruption to occur, if the power is lost gradually and not abruptly during operation.
To another poster that doesn't believe in faulty batteries - he better should. Batteries go bad with time and charge-discharge cycles, they're harmed by complete discharge, and can go bad in several other ways. However, I wouldn't expect a battery to start its life damaged - quality control of the manufacturer should prevent this.
My results for reference - I have ~2-3 hours a day SOT, 1-2 hours tethering, have several phone calls, messages and mails - and the phone is usually upwards of %50 at the evening. I have to run it through ~4 hours navigation to reduce it to sub-20% towards the end of the day, and actually see no reason why a smartphone should hold any longer - it's routinely recharged every night. The main problem for smartphones, to me, is not surviving till the end of the day.
nzzane said:
It's too late to say this, but after getting a new battery/phone you should always drain it fully and then fully charge the battery so that the battery has a proper charge (it saves a lot of battery capacity and battery life)
Sent from my D5833 using XDA Free mobile app
Click to expand...
Click to collapse
Thank you for sharing, but that advice is about as outdated and useless as changing your car's oil every 3000 miles. Batteries simply don't work that way anymore and some studies show that battery life is actually reduced when you perform full charge cycles instead of shorter recharges throughout the day.
Edit: looks like someone else best me to it :-/
Sent from my Xperia Z3 Compact
Jack_R1 said:
Good that it's too late, because it's incorrect. This suggestion dates back to the days of NiCd batteries which had "memory effect". Li-Ion batteries found in modern devices for at least the last several years and definitely since the beginning of Android don't have this effect, but have something else - when you drain the battery completely, you cause damage to the battery cells, and it can withstand only a few of these full-draining cycles before losing significant part of its charge capacity. This is why both laptops and phones have protective measures to turn off the phone completely before the battery reaches a dangerous drained state. And as the batteries go bad and their "low percentage" scale becomes unreliable (not able to sustain operation currents with low charge), these protective mechanisms can fire too late - which in turn can cause storage corruption to occur, if the power is lost gradually and not abruptly during operation.
To another poster that doesn't believe in faulty batteries - he better should. Batteries go bad with time and charge-discharge cycles, they're harmed by complete discharge, and can go bad in several other ways. However, I wouldn't expect a battery to start its life damaged - quality control of the manufacturer should prevent this.
Click to expand...
Click to collapse
PuffDaddy_d said:
Thank you for sharing, but that advice is about as outdated and useless as changing your car's oil every 3000 miles. Batteries simply don't work that way anymore and some studies show that battery life is actually reduced when you perform full charge cycles instead of shorter recharges throughout the day.
Click to expand...
Click to collapse
Actually sorry to break it to you, but you are wrong, Li-ION batteries do have a memory effect, since about 2013, researchers have found that they do have memory effect.
nzzane said:
Actually sorry to break it to you, but you are wrong, Li-ION batteries do have a memory effect, since about 2013, researchers have found that they do have memory effect.
Click to expand...
Click to collapse
Well, thanks for showing me something new. However, this is a very different effect from NiCD. While in NiCD this effect would prevent the battery from taking a full charge when repeatedly not discharged fully, in the research you've showed there are 2 very important points:
1. What matters is not the discharge, but rather a charge. Charging not fully is a way to trigger this effect. On the other hand, discharging partially (like in NiCD) doesn't trigger it. This point makes the info, while indeed interesting by itself, irrelevant to the current discussion, and keeps your previous suggestion wrong and bad for the battery.
2. If kept charging a bit longer - the battery would still charge fully, though it would take a different amount of time from the expected. For night time charging, when the phone is connected to the charger for several hours more than it's needed to actually regain the charge, I'd guess that most of the time it does the job of filling the battery properly even after an incomplete charging cycle.
[edit]
After reading it again - actually there is a third point that makes your suggestion even much worse than I thought it is:
This memory effect that you've pointed to is triggered by having an incomplete charge followed by a complete discharge. That means, incomplete charge with incomplete discharge don't cause it - a complete discharge is required. And when you receive a new phone, the battery isn't fully charged - so if someone goes by your suggestion:
nzzane said:
...after getting a new battery/phone you should always drain it fully and then fully charge the battery...
Click to expand...
Click to collapse
He would actually be triggering the memory effect you've linked to, on its bad side!
And just for reference, here is a recent article from 2015 that is far less technical, but does a great job of explaining battery behavior in practical terms that average people can understand:
http://www.digitaltrends.com/mobile/expert-advice-on-how-to-avoid-destroying-your-phones-battery/
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!