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Is it normal if note 2 cost you 5-6 hours to full recharge 5-100%? it's ~3 hours before. And after 5 months it take too long for recharging.
Im used Alliance v3.1 - perseus kernel 3.0.36. Wifi on all the time. 3G not often. Note2 sleep when recharging (untouched).
If you still use the original cable, try to change to different cable. Check your voltage using galaxy charging current (root).
Sent from my GT-N7100 using xda app-developers app
Im noticed the brightness of a red led sometime too "dark" and sometime very bright. Is it a signal?
Try to change the charging cable. because the normal charging with original cable and charger is 1and half hour from zero to full.
Sent from my GT-N7100 using Tapatalk 4 Beta
How old is your battery? When I mean "old", I mean how many full charge/discharge cycles has it been through? Do you let your battery go below 5% often? Is it an original Samsung battery?
As batteries get older, they may take a longer time to reach full charge. However, to truly troubleshoot the cause of the problem you need to:
a) have at least another cable to compare with
b) Measure the current that the device is getting during the recharge. There is software that can give you this info.
Without these questions answered and these two tools, it will be difficult to accurately troubleshoot the cause of your problem. Once you are able to provide some more info, we'll be glad to help you.
Alexei Volkoff said:
How old is your battery? When I mean "old", I mean how many full charge/discharge cycles has it been through? Do you let your battery go below 5% often? Is it an original Samsung battery?
As batteries get older, they may take a longer time to reach full charge. However, to truly troubleshoot the cause of the problem you need to:
a) have at least another cable to compare with
b) Measure the current that the device is getting during the recharge. There is software that can give you this info.
Without these questions answered and these two tools, it will be difficult to accurately troubleshoot the cause of your problem. Once you are able to provide some more info, we'll be glad to help you.
Click to expand...
Click to collapse
1/ Battery is stock and original. 6 months. ~ 130 times full charrge. 30-40 times not full charge (60%-80% then discharged). <20 times battery go below 5%.
2/ Used Battery HD to get info's battery: with AC: 4:19 hours. with USB: 6:29 hours .
3/ Try with another cable. And the red led is very bright. And it seem tobe decreased the charging time.
I forgot my AC at my work place, then i only have choice to use USB. aww
dproe said:
1/ Battery is stock and original. 6 months. ~ 130 times full charrge. 30-40 times not full charge (60%-80% then discharged). <20 times battery go below 5%.
2/ Used Battery HD to get info's battery: with AC: 4:19 hours. with USB: 6:29 hours .
3/ Try with another cable. And the red led is very bright. And it seem tobe decreased the charging time.
I forgot my AC at my work place, then i only have choice to use USB. aww
Click to expand...
Click to collapse
OK. Lets start troubleshooting your problem but first some basics to help you better understand the issue and maintain your battery in good shape and maximize its longevity:
Full battery discharges - until power shutdown (0%) - or discharges that drain the battery below 3% must be avoided because they stress the battery and cause premature wear. It is better to perform partial discharges and frequent charges instead of performing a full discharge followed by a full charge. I never let my battery drop below 5%.
A discharge/charge cycle consist of using all of the battery charge (100%) but not necessarily at once. For example, you can use half its capacity then fully charge it. This is not a discharge cycle, it is only half of a cycle. Only if you do this twice does it counts as a single discharge cycle (50%+50% = 100%). Same goes if you use 30% then charge, then use 20% then charge, then use 25% then charge, then use another 25% then charge. You charged 4 times but you only did one cycle (30%+20%+25%+25%=100%). So it may take several charges/discharges until a full discharge cycle is completed.
Charging speed depends on the amount of current the battery is fed. The Note 2 can be charged with a max. current of 2A (2 Amps) or 2000 mA (2000 milliamps). If you check the stock charger's specifications, you'll see that it's output is 2A. However, not all USB cables can conduct this amount of current. So, even if the charger is outputting 2A the battery may be being fed less because the cable can't handle 2A. Hence, the importance of the cable. One way to check this, is by installing a software that can read the amount of current that is being fed to the device. I personally use "Galaxy Charging". It is free and serves its purpose.
Also, charging speed is not linear. You probably have noticed that when you charge a totally drained battery, the first 20% are charged pretty quickly and the last 10% are rather slow.
Last, if you charge your device through a regular USB port from your computer or another device, it is perfectly normal that it charges much slower since the original USB specification defines an output current of 0,5A. Even the so-called "charging ports" from today's laptop don't output 2A (not any that I know, at least). The fact is that even most wall USB chargers don't output 2A and even some of the ones that claim they do, actually don't.
If you are having trouble understanding any of these theoretical facts about charging, please let me know and I'll try to explain them better. I don't know if I got through to you.
So, let's see what is wrong.
1) Download "Galaxy Charging" from the Play Store. There may be other, but it seems this one is popular among XDA members, so it is easier to compare figures.
2) Take the cable with which you are charging now, the stock cable and another USB cable.
3) Make sure the battery is more than 20% charged and less than 80%.
4) Shut down all apps, including the ones that are running in the background. Take note of the initial battery level (%). Charge the battery using your regular cable. Run "Galaxy Charging", check the "Now" input current and take note of it. Let it charge for a while (no need to fully charge it). If you want to, you can also take note of the charging time. DON'T USE YOUR PHONE while charging!!! If you do, you won't be able to truly compare the measurements.
5) Take note of the "Maximum", "Now" and "Avg" figures in "Galaxy Charging", unplug the charger and take note of the final battery level (%).
6) Use you cellphone until the battery level drops to the initial battery level at the begging of the charging procedure. Repeat steps 4) and 5) with the other cables, not forgetting to take notes of the currents measured by the software.
This may sound like a pain in the a$$ but unless a procedure is repeatable, you cannot draw any serious conclusions. The initial and final battery levels must be the same because, as I said, charging is not linear. So, the range at which this experiment is conducted must also be the same. Also, charging times can be affected by variables like: battery age, room temperature, mains current variations, how low the battery level is and so on. So, other people's charging times are a rough guideline only. Not to mention the people who use their phones while charging or keep a zillion apps running in the background and them post their times on the forums like if they meant something.
Let me know your findings. I'm sure you will find something of interest if you take the time and trouble to follow these steps and maybe we can all learn something in the process. Good luck.
Thanks mate! This is very helpul.
You saved more life (battery) :good:
Check out this thread: http://forum.xda-developers.com/showthread.php?t=2360806
Use Peresus and GCC say: 466-466-466. same with USB connect. So i try to flash other kernel, Redpill. And now GCC say: 600-1689-600. Cable is original.
Then i try to reflash again with peresus and GCC say: 800-1689-800 (with or without ignore unstable power). Try reboot and GCC say: 600-1689-600. Cable still original.
Un-plug the cable and plug it in. GCC say 1800-1689-1800.
Well, maybe the kernel is normnal and cable has a problem. I'll try another cable soon. Thanks everyone. :good:
dproe said:
Use Peresus and GCC say: 466-466-466. same with USB connect. So i try to flash other kernel, Redpill. And now GCC say: 600-1689-600. Cable is original.
Then i try to reflash again with peresus and GCC say: 800-1689-800 (with or without ignore unstable power). Try reboot and GCC say: 600-1689-600. Cable still original.
Un-plug the cable and plug it in. GCC say 1800-1689-1800.
Well, maybe the kernel is normnal and cable has a problem. I'll try another cable soon. Thanks everyone. :good:
Click to expand...
Click to collapse
Interesting findings. It can also be a bad contact between the cable's plug and the phone's USB port. I had a problem once with a cable and found out that the problem was the metal end of the USB plug itself that wasn't making appropriate contact with the USB port. A small pliers and a bit of pressure on the right spot solved the problem.
longer time to recharge after rooting and updating to customized rom
Alexei Volkoff said:
OK. Lets start troubleshooting your problem but first some basics to help you better understand the issue and maintain your battery in good shape and maximize its longevity:
Full battery discharges - until power shutdown (0%) - or discharges that drain the battery below 3% must be avoided because they stress the battery and cause premature wear. It is better to perform partial discharges and frequent charges instead of performing a full discharge followed by a full charge. I never let my battery drop below 5%.
A discharge/charge cycle consist of using all of the battery charge (100%) but not necessarily at once. For example, you can use half its capacity then fully charge it. This is not a discharge cycle, it is only half of a cycle. Only if you do this twice does it counts as a single discharge cycle (50%+50% = 100%). Same goes if you use 30% then charge, then use 20% then charge, then use 25% then charge, then use another 25% then charge. You charged 4 times but you only did one cycle (30%+20%+25%+25%=100%). So it may take several charges/discharges until a full discharge cycle is completed.
Charging speed depends on the amount of current the battery is fed. The Note 2 can be charged with a max. current of 2A (2 Amps) or 2000 mA (2000 milliamps). If you check the stock charger's specifications, you'll see that it's output is 2A. However, not all USB cables can conduct this amount of current. So, even if the charger is outputting 2A the battery may be being fed less because the cable can't handle 2A. Hence, the importance of the cable. One way to check this, is by installing a software that can read the amount of current that is being fed to the device. I personally use "Galaxy Charging". It is free and serves its purpose.
Also, charging speed is not linear. You probably have noticed that when you charge a totally drained battery, the first 20% are charged pretty quickly and the last 10% are rather slow.
Last, if you charge your device through a regular USB port from your computer or another device, it is perfectly normal that it charges much slower since the original USB specification defines an output current of 0,5A. Even the so-called "charging ports" from today's laptop don't output 2A (not any that I know, at least). The fact is that even most wall USB chargers don't output 2A and even some of the ones that claim they do, actually don't.
If you are having trouble understanding any of these theoretical facts about charging, please let me know and I'll try to explain them better. I don't know if I got through to you.
So, let's see what is wrong.
1) Download "Galaxy Charging" from the Play Store. There may be other, but it seems this one is popular among XDA members, so it is easier to compare figures.
2) Take the cable with which you are charging now, the stock cable and another USB cable.
3) Make sure the battery is more than 20% charged and less than 80%.
4) Shut down all apps, including the ones that are running in the background. Take note of the initial battery level (%). Charge the battery using your regular cable. Run "Galaxy Charging", check the "Now" input current and take note of it. Let it charge for a while (no need to fully charge it). If you want to, you can also take note of the charging time. DON'T USE YOUR PHONE while charging!!! If you do, you won't be able to truly compare the measurements.
5) Take note of the "Maximum", "Now" and "Avg" figures in "Galaxy Charging", unplug the charger and take note of the final battery level (%).
6) Use you cellphone until the battery level drops to the initial battery level at the begging of the charging procedure. Repeat steps 4) and 5) with the other cables, not forgetting to take notes of the currents measured by the software.
This may sound like a pain in the a$$ but unless a procedure is repeatable, you cannot draw any serious conclusions. The initial and final battery levels must be the same because, as I said, charging is not linear. So, the range at which this experiment is conducted must also be the same. Also, charging times can be affected by variables like: battery age, room temperature, mains current variations, how low the battery level is and so on. So, other people's charging times are a rough guideline only. Not to mention the people who use their phones while charging or keep a zillion apps running in the background and them post their times on the forums like if they meant something.
Let me know your findings. I'm sure you will find something of interest if you take the time and trouble to follow these steps and maybe we can all learn something in the process. Good luck.
Click to expand...
Click to collapse
Hello.
Would you help me to resolve this problem:-
I've just got new update for my Note 2 N7100 today (31.12.2013 as at my local time) with the Omni ROM Kit Kat 4.4.2 and flashed it successfully. The problem is that since I did customize my Note 2 with the said ROM, I could see the battery drained a bit faster even Kit Kat used less RAM on certain running apps (as I believe this would help me conserving more battery life) and since the latest update, I found that the recharging time took a longer time to even reach 50%, if compared with before rooting with the said ROM (real scenario: recharging battery as usual via original recharger, but after almost 2 hours (started at about 7.00 pm till about 9.00 pm), the battery itself just clocking not even 40% recharged). No idea what is the real problem, could be so technical to me as I could not by myself figure out what happened, even though looks like the ROM works okay and stable to my Note 2.
So, any advice?
TQ!
I am using AICP rom, sept 9 release version. I have the issue with the battery wherein the phone turns off when the battery level is at around 61%. I have tried battery calibration app more than once but it does not seem to help.
Another strange thing i notice is when the phone turns off at 61%. I connect the charger and i get the usual message from oppo about battery being low. It starts charging and it is at 0%. I let it charge for about 5 minutes and the battery level is suddenly 64% and i can turn the phone on. After that phone charges to 100% in under an hour even when using a non vooc charger. I cannot use the vooc charger with a custom rom because of the boot loop issue it gets into.
At 100% the voltage measured by CPUZ is 3886 mv.
Any idea how this can be fixed. Any help is greatly appreciated.
Sent from my Find7 using Tapatalk
DroidSK said:
I am using AICP rom, sept 9 release version. I have the issue with the battery wherein the phone turns off when the battery level is at around 61%. I have tried battery calibration app more than once but it does not seem to help.
Another strange thing i notice is when the phone turns off at 61%. I connect the charger and i get the usual message from oppo about battery being low. It starts charging and it is at 0%. I let it charge for about 5 minutes and the battery level is suddenly 64% and i can turn the phone on. After that phone charges to 100% in under an hour even when using a non vooc charger. I cannot use the vooc charger with a custom rom because of the boot loop issue it gets into.
At 100% the voltage measured by CPUZ is 3886 mv.
Any idea how this can be fixed. Any help is greatly appreciated.
Sent from my Find7 using Tapatalk
Click to expand...
Click to collapse
If your device is bootlooping with the vooc charger AND behaving strangely as described, I'm 90% certain you have failed hardware.
Either that or AICP is REALLY screwed up, check to see if this behavior occurs on ColorOS. If the battery voltage is 3.88 volts when the fuel gauge reads 100% something is VERY wrong. When charging, it should be at 4.2 or 4.35 volts (most Oppos are 4.35 thanks to a new battery chemistry and I think the Find7 uses 4.35v batteries) from 95-100% or so.
Battery calibration apps don't do anything and never have. No fuel gauge in existence uses batterystats.bin, and most of them have no interface between the kernel and userland to alter calibration.
Well i did some charging and testing and it seems like the issue is resolved.
As suggested on the oppo forums
i continued to charge even after 100% till the voltage reading was 4337 mv. Then deleted batterystats and rebooted. Phone lasted more than 24 hours and the system calibrated again. It reached 3% before dying after which i recharged again. At 100% voltage reading was 4337 mv.
Thankfully battery and hardware is not damaged. This is probably a weird android quirk.
Sent from my Find7 using Tapatalk
DroidSK said:
Well i did some charging and testing and it seems like the issue is resolved.
As suggested on the oppo forums
i continued to charge even after 100% till the voltage reading was 4337 mv. Then deleted batterystats and rebooted. Phone lasted more than 24 hours and the system calibrated again. It reached 3% before dying after which i recharged again. At 100% voltage reading was 4337 mv.
Thankfully battery and hardware is not damaged. This is probably a weird android quirk.
Sent from my Find7 using Tapatalk
Click to expand...
Click to collapse
Deleting batterystats does nothing and never has in terms of state of charge estimation. It ONLY affects the estimates of what app used the most power in Settings->Battery and NOTHING ELSE. It has been that way since the beginning of Android. Also, deleting it was pointless and redundant in this case, since charging to 100% does THE EXACT SAME THING. The only reason to ever delete this was if you had a severely failed device that never properly terminated charging, or one with a broken kernel that does not properly report charge termination to Android. (The last time I saw this were early Kindle Fire bringups back in the ICS days.)
However charging to actual proper 100% is likely what did the trick. Nearly all fuel gauge chipsets undergo a calibration cycle when charge termination occurs. More specifically, nearly all of them redefine 100% when charge termination happens.
I do agree that deletion of battery stats was not needed. But i just did it. One thing i did notice was the smaller file size when i had the issue - around 130KB. Now it is 143KB. May be incorrect file size also indicates an issue.
Sent from my Find7 using Tapatalk
Hi guys,
For those having the A70, does the "Super Fast Charging" feature work for you ?
With the original provided charger (with the "Super Fast Charging" logo on it), I need 3 hours to go from 9% to 100%.
So that is 1% every 2 minutes...
I do not consider this a "Super fast". I think it is "Decent" but would not go above that...
For me, this a severe disappointment... Unless of course I am doing something wrong
Anyone else can share his results for Super fast charging here ?
Regards.
Your phone must have an error. Mine lasts about 1:20 to charge from about 15% to 100%.
JesuuBL said:
Your phone must have an error. Mine lasts about 1:20 to charge from about 15% to 100%.
Click to expand...
Click to collapse
Hi,
Thanks a lot for your answer.
The phone... or the charger maybe ?
Is there something to enable to have that "Super Fast Charging" ?
Or something to not disable ?
If I can solve battery drain (not really lasting as I expect) and this, I will think again about keeping the phone.
So far, it's more a non keeper
Regards.
NexusPenguin said:
Hi,
Thanks a lot for your answer.
The phone... or the charger maybe ?
Is there something to enable to have that "Super Fast Charging" ?
Or something to not disable ?
If I can solve battery drain (not really lasting as I expect) and this, I will think again about keeping the phone.
So far, it's more a non keeper
Regards.
Click to expand...
Click to collapse
Hello . Do you charge it with the screen closed? Only then fast charging works! IF yes then something is wrong with either the cable or the charger .You could also try a factory reset !
Pe3ball said:
Hello . Do you charge it with the screen closed? Only then fast charging works! IF yes then something is wrong with either the cable or the charger .You could also try a factory reset !
Click to expand...
Click to collapse
Hi,
Thanks for the info => Super Fast Charging only with display off ?
So if I leave "Always On" it will not work ?
Maybe that is why...
Anyways, I did as you suggested : I have done a full factory reset, and I have installed the bare minimum of Apps.
We will see about battery drain an battery charging.
I'll keep you posted.
Best regards.
https://imge.to/i/8E6
Go to Device Care then Battery then the three dots on top right then Settings then make sure "Fast cable charging" is enabled
Sufyan3D said:
https://imge.to/i/8E6
Go to Device Care then Battery then the three dots on top right then Settings then make sure "Fast cable charging" is enabled
Click to expand...
Click to collapse
Hi Sufyan3D,
Thanks a lot for that info...
I've made sure that the fast charge is enabled.
So far, the device is still at 100% so I can't say if the problem is "solved", but I'll make sure to report if now it charges as it should
And also about battery drain...
Regards.
That's correct! OK check it now and tell us! No battery drain, this thing is a beast! Keep us posted!
Pe3ball said:
That's correct! OK check it now and tell us! No battery drain, this thing is a beast! Keep us posted!
Click to expand...
Click to collapse
Hi,
So far, I cannot tell about the Fast charge.
But the phone is almost idle (really gently used) with "Always on" enabled.
It's been idle since about 3hours and battery is at 98%.
I consider this a rather good result.
Hope it'll stay as it is once I install all my apps...
If not, I'll try to track the culprit for the high battery drain.
Regards.
I have same problem, after reading your post, I drained my battery to 9% and charge, it so slow while charging.
Sent from my SM-A705FN using Tapatalk
---------- Post added at 11:02 PM ---------- Previous post was at 11:00 PM ----------
I have taken screen shots step by step but can't upload
Sent from my SM-A705FN using Tapatalk
It's pretty fast just over a hour and near full charge from 20% , pretty solid so far took it of charge at 7am and at 7:30pm still on 54% and been on it all day taking photos /slow mo vids web browsing the norm and still going strong!! [emoji2]
Sent from my SM-A705FN using Tapatalk
Hi guys,
Well I think it is confirmed that my phone has a problem.
The battery drain is more than acceptable.
I drove my kid to school yesterday. It is a 80 minute trip to go there and come back.
While I drove her, I used the A70 as a GPS whilst it was connected to car audio with Bluetooth.
Battery drain in 80 minutes was a little less than 10% which is quite good I think...
Then I played a bit with the phone and went to bed.
This morning it still had 84% battery.
So that is about 2% battery drain overnight.
Not stellar but acceptable.
So I decided to hook it up.
The battery panel reports "Fast charging plugged in".
But after 40 minutes, I am still at 98% charge.
That means 40 minutes to get 10% battery.
I am aware that the last 10% are the longest, but still... 40 minutes for 10% ?
I will test with another charger to see if it is the phone or the charger...
Regards.
NexusPenguin said:
Hi guys,
Well I think it is confirmed that my phone has a problem.
The battery drain is more than acceptable.
I drove my kid to school yesterday. It is a 80 minute trip to go there and come back.
While I drove her, I used the A70 as a GPS whilst it was connected to car audio with Bluetooth.
Battery drain in 80 minutes was a little less than 10% which is quite good I think...
Then I played a bit with the phone and went to bed.
This morning it still had 84% battery.
So that is about 2% battery drain overnight.
Not stellar but acceptable.
So I decided to hook it up.
The battery panel reports "Fast charging plugged in".
But after 40 minutes, I am still at 98% charge.
That means 40 minutes to get 10% battery.
I am aware that the last 10% are the longest, but still... 40 minutes for 10% ?
I will test with another charger to see if it is the phone or the charger...
Regards.
Click to expand...
Click to collapse
Download a free app called "Ampere" from the Play Store, to measure your charging current. Plug the phone into the charger then open the App to get the measurements. Post your result here and compare with other A70 owners.
App shows that my charging current is around 1100mah (with the 25w charger)
I landed here as I was surprised how slow my A70 was to charge. It takes around 3 hours to get from 15% to full, using the included Samsung 3A charger & original cable. Ampere shows the current trickling in at around 850mA. Super Fast Charging is enabled. My previous phone was a Xiaomi Mi 8 Lite which charged at around 2A according to Ampere.
PS I found this link which suggests most of the fast charging happens early in the cycle https://www.sammobile.com/2019/05/02/how-fast-is-samsung-25w-super-fast-charging
The Charger is rated at max 2.77 amps and 9 volts for fast charging. It will vary through the charging cycle though. Towards the end, above 80%, the charging will slow. How long does it take from 15% to 80% and what is the measurement in the middle of that?
GavCity said:
The Charger is rated at max 2.77 amps and 9 volts for fast charging. It will vary through the charging cycle though. Towards the end, above 80%, the charging will slow. How long does it take from 15% to 80% and what is the measurement in the middle of that?
Click to expand...
Click to collapse
Will need to measure that the next time I charge it as it's now at 100%! How long does yours take from 15 to 80%?
dwl99 said:
Will need to measure that the next time I charge it as it's now at 100%! How long does yours take from 15 to 80%?
Click to expand...
Click to collapse
I've never tested it. I have fast charge turned off. I charge my phone over night. The battery lasts me all day every day.
Samsung A70 Failed!!
I think A70 is failed in all fields.
No porper GCam. And now batteries.
My device getting charged in around 4 hours with original cable and charger.
Now I think I invest 27k in wrong item. OnePlus 7 or realme 3 pro was far better than A70.
It's just name Samsung, nothing else. Blank box with tag of Samsung. Really disappointing with this.
Sorry to fans of Samsung devices. But I don't like this. After 2011 (Samsung Galaxy Y s5360), I think Samsung is better nowadays but I was wrong. I will never buy Samsung phone again.
ErHarinderSingh said:
I think A70 is failed in all fields.
No porper GCam. And now batteries.
My device getting charged in around 4 hours with original cable and charger.
Now I think I invest 27k in wrong item. OnePlus 7 or realme 3 pro was far better than A70.
It's just name Samsung, nothing else. Blank box with tag of Samsung. Really disappointing with this.
Sorry to fans of Samsung devices. But I don't like this. After 2011 (Samsung Galaxy Y s5360), I think Samsung is better nowadays but I was wrong. I will never buy Samsung phone again.
Click to expand...
Click to collapse
I am not facing such issues in my device. Regarding development, for a device like a70, development is always slow. We have the source codes available. The only thing missing is developers onboarding to support the device. If at least 1 dev puts the kernel and device source codes and tree in github, I bet development will start soon after.
GavCity said:
The Charger is rated at max 2.77 amps and 9 volts for fast charging. It will vary through the charging cycle though. Towards the end, above 80%, the charging will slow. How long does it take from 15% to 80% and what is the measurement in the middle of that?
Click to expand...
Click to collapse
I took some readings with Ampere during a charge:
0 mins 8% battery 4050mA
30 mins 38% battery 1060mA
60 mins 52% battery 1050mA
90 mins 66% battery 1020mA
120 mins 81% battery 1080mA
150 mins 91% battery 1000mA
180 mins 100% battery
So 3h from nearly empty to full which is not exactly fast. Is this in line with what others get?
Hi all,
occasionally I see my 7 months old Pixel 3a XL can't hold battery power from 11% down. Switches off very fast, abnormally fast. Then if I power it and start it then keeps on restarting until battery level is higher than 5-6%
I use the original charger only. Sometimes it appears, some it does not and I can see it discharges as expected.
I try to keep my battery within 40-100% full and discharge it very rarely to 0%.
Anyone facing those abnormalities? Can't think of connected events - updates, etc ....
Cheers
p.s. after last night happening again, charged the phone from 0% to 86% (phone was off during charge), turned on on 86% and left over night on the shelf. Usually drains 2-3%, this morning it dropped from 86% to 62%. All connections off, nothing unusual shown in the battery usage stats...
TodNex said:
Hi all,
occasionally I see my 7 months old Pixel 3a XL can't hold battery power from 11% down. Switches off very fast, abnormally fast. Then if I power it and start it then keeps on restarting until battery level is higher than 5-6%
I use the original charger only. Sometimes it appears, some it does not and I can see it discharges as expected.
I try to keep my battery within 40-100% full and discharge it very rarely to 0%.
Anyone facing those abnormalities? Can't think of connected events - updates, etc ....
Cheers
p.s. after last night happening again, charged the phone from 0% to 86% (phone was off during charge), turned on on 86% and left over night on the shelf. Usually drains 2-3%, this morning it dropped from 86% to 62%. All connections off, nothing unusual shown in the battery usage stats...
Click to expand...
Click to collapse
That's pretty weird
My 3a xl (about the same age as yours) doesn't use more than 10% max when left overnight. Are you using AOD or anything?
Sent from my Pixel 3a XL using XDA Labs
@Skittles9823 nothing beside stock Android and apps that I've used forever. Strange is that it's occasional - also occassional is initial drain from 100% to 92%.
Maybe its time to flash it - nothing suspicious is shown in batt stats
I use the fast charger that came with it. Not sure how it affects battery life long term. I try to keep it 100% to 40% usually and not charge it if not necessary..
TodNex said:
@Skittles9823
I use the fast charger that came with it. Not sure how it affects battery life long term. I try to keep it 100% to 40% usually and not charge it if not necessary..
Click to expand...
Click to collapse
I think popular wisdom is that both fast charging and in particular charging to 100% are not kind to the battery's longivety. Divided opinion about the effect of discharging to low percentages. Personally I charge to between 70 and 80% unless I know I'm going to need more capacity. 3a XL has a bigish battery, which helps. I recharge most nights but only to 70-80%. End of day I usually end up between high 40's and low 30's charge.
I manually set all apps I don't actually need to run in background to 'restricted' background use.
I charge mine up to a 100% often, when using it heavy.. I never heard of charging a battery to 100% being bad for it, unless you believe everything that is told or should I say sold to you.. Sounds like a faulty battery. If still under the 1 yr usual warranty I would have it replaced. I have drained mine down to less than 20% and still never experience any issue that OP state.
doubledragon5 said:
I never heard of charging a battery to 100% being bad for it
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Click to collapse
Some research references in here
https://accubattery.zendesk.com/hc/en-us/articles/210224725-Charging-research-and-methodology
https://accubattery.zendesk.com/hc/...-Cycle-Life-Modeling-of-Lithium-Ion-Batteries
Also Apple have actually introduced a feature to stop/postpone 100% charging when the phone thinks it's not required. Would be good if we had similar/more control for Android.
https://support.apple.com/en-us/HT210512
WibblyW said:
Some research references in here
https://accubattery.zendesk.com/hc/en-us/articles/210224725-Charging-research-and-methodology
https://accubattery.zendesk.com/hc/...-Cycle-Life-Modeling-of-Lithium-Ion-Batteries
Also Apple have actually introduced a feature to stop/postpone 100% charging when the phone thinks it's not required. Would be good if we had similar/more control for Android.
https://support.apple.com/en-us/HT210512
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I'm still not sold on the idea that charging a battery to 100% is bad.. But thanks for those links.
doubledragon5 said:
I'm still not sold on the idea that charging a battery to 100% is bad.. But thanks for those links.
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Click to collapse
It's actually true. Lithium Ion batters degrade over time, the speed of which, depends on the amount of battery cycles they go through (0-100% and vice versa). Others have done the research and the math and found that generally a 20% to 80% and vice versa charge seems to be the best for longevity.
Personally I charge to 100 but try to charge my phone when it gets to 20-30%.
Sent from my Pixel 3a XL using XDA Labs
doubledragon5 said:
I'm still not sold on the idea that charging a battery to 100% is bad.. But thanks for those links.
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Click to collapse
Evidence and research is there. Of course you don't have to believe it. It's your phone, your battery, your money
WibblyW said:
Evidence and research is there. Of course you don't have to believe it. It's your phone, your battery, your money
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Click to collapse
So very true my phone my money. In all my years of using cell phones, I think I have actually replaced a battery once because it went bad.
Thank you all for the links and the inputs!
One more symptom - when is very low like this morning - 1% and put it in charger - phone shuts off.
I will keep the battery in 40-80% for the future and limit the drain below 40%. I tried to charge it slow with USB - took me like 6-7 hours...
How long it takes you from zero to 100% with the stock charger - looks very fast to me - 0% to 67% in 35 mins
I personally tried to research and could not find what is worse for these batteries - number of cycles (obvious less when used below 40%) or the low capacity usage ?
TodNex said:
Thank you all for the links and the inputs!
One more symptom - when is very low like this morning - 1% and put it in charger - phone shuts off.
I will keep the battery in 40-80% for the future and limit the drain below 40%. I tried to charge it slow with USB - took me like 6-7 hours...
How long it takes you from zero to 100% with the stock charger - looks very fast to me - 0% to 67% in 35 mins
I personally tried to research and could not find what is worse for these batteries - number of cycles (obvious less when used below 40%) or the low capacity usage ?
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Click to collapse
The included charger is a fast charger, good for headlining how fast it charges, not so great for the battery. I just use a 'standard' (Anker) USB charger.
Jury's out on if deeper discharge is bad, but it's the number of complete cycles (0-100% counting as 1). So 40 - 80% is 0.4 of a full cycle, and you're not stressing the battery so much by taking it to 100%. Many folk here replace their phones frequently enough not to be bothered by all this - if they sell it when 20% of the battery capacity's gone, that's fine.
I've observed the behaviour and few things made me question myself...one time I can see 13% battery and palying Youtube just shutdown the phone. Put it into charger and started showing 4% as initial charge.
There was another time when using Viber video shutdown in 23% but can be overheat or software bug.
I try to keep it these days above 40% charge but still use the supplied charger till I buy new slower one.
TodNex said:
I've observed the behaviour and few things made me question myself...one time I can see 13% battery and palying Youtube just shutdown the phone. Put it into charger and started showing 4% as initial charge.
There was another time when using Viber video shutdown in 23% but can be overheat or software bug.
I try to keep it these days above 40% charge but still use the supplied charger till I buy new slower one.
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Click to collapse
The good news is that this phone seems to be pretty easy to repair and a battery replacement could very well be a good option for you, especially since you wouldn't be compromising any water resistance or anything
I have been a fan of wireless charging for many years since my LG G4,
with the optional, QI charging rear case,
As the F3 lacks QI charging, i have been struggling to find a compatible charging receiver,
after buying 2 incompatible charging receivers, the black type with qi printing in the middle, from a well known UK auction site.
I thought I would try ALI, as i buy bits from there and came across this type in the photo,
and I can confirm it works a treat.
I use my F3 in a flip case and the receiver is still working up to a depth of 5mm.
Buying this QI charging receiver means Less wear and tear on the charge socket
and also helps a bit with water proofing and protects the socket from Dirt & Fluff
Could you link the item you bought from Ali that worked?
LilBlinx said:
Could you link the item you bought from Ali that worked?
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Hi,
I have just updated my post,
Cheers
How much time do you need 2 charge a full battery ?
Hi,
I have just checked Accubattery and a 30% charge (30 to 60% / 1.209 ma) took, 1hr 22m and this only achieved 0.04 battery wear cycles using a Swalle 5w wireless charger,
this is perfect for me
regards
johnr64 said:
Hi,
I am a low phone user and find that a 60% charge lasts me around 8 hours before I hit 30%.
I use a brilliant program called Advanced Charging Controller (ACCA) , that keeps my phone nicely topped up between 30 & 60%, i have just checked Accubattery and a 30% charge (30 to 60% / 1.209 ma) took, 1hr 22m and this only achieved 0.04 battery wear cycles, this is perfect for me
regards
Click to expand...
Click to collapse
You need to read more user feedback lol
It's not recommended to be using it on xiaomi phones.
The chip in charge of charging will eventually die ( get corrupted or whatev ) and the phone becomes permanently bricked.
Aosp rom's experimented with it few months back , then fully removed it soon after reports came in.
Rstment ^m^ said:
You need to read more user feedback lol
It's not recommended to be using it on xiaomi phones.
The chip in charge of charging will eventually die ( get corrupted or whatev ) and the phone becomes permanently bricked.
Aosp rom's experimented with it few months back , then fully removed it soon after reports came in.
Click to expand...
Click to collapse
Hi,
thanks for the heads up, i also read that users were depleting their batteries to 0%, using (ACC) then were unable to recover from a dead phone,
i also read that to recover from this issue was to leave the phone plugged in for a long time or to jump start the phone buy putting a small amount of external charge into their battery,
yes this does mean removing the battery from the phone and injecting a small amount of charge.
I might just buy a spare BM4Y from ALI for around £16 including taxes just in case.
I have two battery charge alarms set to 25% for peace of mind of,
not getting anywhere near 0%
IF I AM INCORRECT THEN I WILL EDIT MY POST,
Keep me informed,
cheers.
johnr64 said:
Hi,
thanks for the heads up, i also read that users were depleting their batteries to 0%, using (ACC) then were unable to recover from a dead phone,
i also read that to recover from this issue was to leave the phone plugged in for a long time or to jump start the phone buy putting a small amount of external charge into their battery,
yes this does mean removing the battery from the phone and injecting a small amount of charge.
I might just buy a spare BM4Y from ALI for around £16 including taxes just in case.
I have two battery charge alarms set to 25% for peace of mind of,
not getting anywhere near 0%
IF I AM INCORRECT THEN I WILL EDIT MY POST,
Keep me informed,
cheers.
Click to expand...
Click to collapse
You do you man xd...
Not something I wanna mess with at all , I've experienced plenty amount of times having the phone discharge while plugged in with that app installed.
Even when I go to bed and leave the phone plugged in , I wake up and battery is 40-50% lower than what it was the night before... I had 2/3 nights of wondering did I forget to plug the phone and sleepwalk into plugging it in few minutes before waking up?
It's crazy bad on this phone , If I was to ever use it for something that would be to disable battery charging altogether and power the phone fully from outlet when in use - but that toggle doesn't work either xd
I see no use in it , more trouble than good in using it. This is a really shet phone , one that I don't see myself using for long.
Rstment ^m^ said:
You do you man xd...
Not something I wanna mess with at all , I've experienced plenty amount of times having the phone discharge while plugged in with that app installed.
Even when I go to bed and leave the phone plugged in , I wake up and battery is 40-50% lower than what it was the night before... I had 2/3 nights of wondering did I forget to plug the phone and sleepwalk into plugging it in few minutes before waking up?
It's crazy bad on this phone , If I was to ever use it for something that would be to disable battery charging altogether and power the phone fully from outlet when in use - but that toggle doesn't work either xd
I see no use in it , more trouble than good in using it. This is a really shet phone , one that I don't see myself using for long.
Click to expand...
Click to collapse
Thank you for your Update,
i don`t charge my phone overnight,
i will edit my listing in case anyone else faces your issue,
with new android updates, SMART CHARGING might be available for all phones and hopefully the devs can make it compatible with the F3.
Samsung already has this function working on some of their phones,
Cheers
johnr64 said:
Hi,
thanks for the heads up, i also read that users were depleting their batteries to 0%, using (ACC) then were unable to recover from a dead phone,
i also read that to recover from this issue was to leave the phone plugged in for a long time or to jump start the phone buy putting a small amount of external charge into their battery,
yes this does mean removing the battery from the phone and injecting a small amount of charge.
I might just buy a spare BM4Y from ALI for around £16 including taxes just in case.
I have two battery charge alarms set to 25% for peace of mind of,
not getting anywhere near 0%
IF I AM INCORRECT THEN I WILL EDIT MY POST,
Keep me informed,
cheers.
Click to expand...
Click to collapse
i agree the charging chip might suffer if u set too many parameters, I personally use a charging limit set to 80% and leave everything else as default that should extend battery health and protect it from overcharging or staying on 100% plugged in, but I turn it off at least once a month and charge it fully.
Thanks for the tip, just received the linked receiver and it works for me as well.
Also tried two others before (generic one with "Type C" printed on it and one from Nillkin), neither worked. After finding this thread, I decided to gave it one last try.
Interesting detail: while trying to get the other two to work, I tried connecting them through a USB-C power tester and... it started to charge.
msylw said:
Thanks for the tip, just received the linked receiver and it works for me as well.
Also tried two others before (generic one with "Type C" printed on it and one from Nillkin), neither worked. After finding this thread, I decided to gave it one last try.
Click to expand...
Click to collapse
Hi,
I am glad i could help,
for all the ACCA Doubters, my F3 has been happily charging between 35% & 60% for the last 4 weeks and i have not had any issues with my phone not turning on.
I've been looking for many years for the ultimate battery charging app that restricts my phone from charging to 100%, to save on battery cycles and thus keeping my battery in tip top condition,
I can confirm that ACCA Nailed it.
For those of you that are interested in maintaining your battery,
this is how my F3 is setup,
I use the brilliant Descendant Rom V1921, rooted with Magisk for ACCA,
Advanced Charging Controller (ACCA),
also Accubattery to monitor battery cycles and Battery alarm by Zoran Vujacic, this warns me regarding my battery levels,
both apps are available from the Play store.
I set Battery alarm to warn me when my battery drops below 25% and above 60% i also use Accubattery to monitor my battery health and keep an eye on my charge cycles.
I charge my phone between 35% and 60%, acuubattery reports that i have only used 0.003 cycles, (this lasts me around 8 hours).
REGARDING ACCA
Do not let your phone charge drop to 0%, otherwise you may not be able to charge or turn your phone on, this issue has been reported using other xiaomi phones and roms.
Use ACCA at your own risk,
again i hope this helps someone,
johnr64 said:
Hi,
I am glad i could help,
for all the ACCA Doubters, my F3 has been happily charging between 35% & 60% for the last 4 weeks and i have not had any issues with my phone not turning on.
I've been looking for many years for the ultimate battery charging app that restricts my phone from charging to 100%, to save on battery cycles and thus keeping my battery in tip top condition,
I can confirm that ACCA Nailed it.
For those of you that are interested in maintaining your battery,
this is how my F3 is setup,
I use the brilliant Descendant Rom V1921, rooted with Magisk for ACCA,
Advanced Charging Controller (ACCA),
also Accubattery to monitor battery cycles and Battery alarm by Zoran Vujacic, this warns me regarding my battery levels,
both apps are available from the Play store.
I set Battery alarm to warn me when my battery drops below 25% and above 60% i also use Accubattery to monitor my battery health and keep an eye on my charge cycles.
I charge my phone between 35% and 60%, acuubattery reports that i have only used 0.003 cycles, (this lasts me around 8 hours).
REGARDING ACCA
Do not let your phone charge drop to 0%, otherwise you may not be able to charge or turn your phone on, this issue has been reported using other xiaomi phones and roms.
Use ACCA at your own risk,
again i hope this helps someone,
Click to expand...
Click to collapse
What charging switch are you using? And did you able to change voltage and current?
finalgravity525 said:
What charging switch are you using? And did you able to change voltage and current?
Click to expand...
Click to collapse
Hi,
I use Advanced Charging Controller (ACCA) as in my previous post, i don`t use Voltage/Current limit functions, i just set the maximum charge limit.
ACCA is a Software only based charging app, it requires Root access for it to work, i have attached some screen shots of ACCA, as you can see it has lots of useful functions.
I have also attached pictures of my slightly modified QI Wireless receiver, i did this by putting aluminium foil around the receiver to dissipate a little bit more heat.
As my phone is in a clam style case and with the warmer weather slowly on its way, anything to help the QI receiver with heat has to be a good thing, especially as the receiver is in close proximity to the F3`s Li-ion battery.
I hope this helps
Bought 2 of them (in case of) from this ali vendor and I can confirm it works fine with the F3, thanks OP
It works at full 1A/5W
EDIT: one of the receiver does not work anymore, tested with different chargers/phones :-/