Hi, i have the F4 GT 256GB with 12GB of ram.
I am experiencing a starnge thing, my battery shows 100% at random not fully charged volts (4.1, 4.0,3.9) when its suppose to be at 4.45. When it gets down to 20% it drops to 0 in seconds because the voltage goes down to 3.3volts and its really low for a lithium battery.
When i charge all the way to 4.45v when device is off (i see how much current the charger draws) it fixes it until the next incomplete charge. If the next charge is up to 4.3v now 4.3v is the new "100%".
Im on the last version of miui 13, i dont want to update to miui14.
I test the voltage in accbattery, great app btw.
Anyone know how to solve it?
Related
Hello, I've recenty installed Battery Circle from the F-Droid repos on my SG Wifi 4.2 (UK version).
I don't know how accurate the voltage readings are but I have noticed that when the battery drops to 15% capacity (and you get a warning to plug the charger as soon as possible), the battery is still on 3.55/3.6 Volt, which is way above the safe limit of 3 Volt, as suggested by this article on Battery University:
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Over-discharging Lithium-ion
Li-ion should never be discharged too low, and there are several safeguards to prevent this from happening. The equipment cuts off when the battery discharges to about 3.0V/cell, stopping the current flow.
Click to expand...
Click to collapse
I've let the battery drop down to 3% and it was still above 3.5V.
I always switch off the device when I charge it, it that makes any difference.
Any clues? Thanks
I know it's rude but I need to bump this thread.
By the way I've let the SGP drop down to 2% battery and still showed 3.49V in Battery Circle. I wonder if either the battery percentage or the voltage indicator are reliable.
If you want to know the true voltage state of the battery remove it and check it with a voltmeter.
AEVAREX said:
If you want to know the true voltage state of the battery remove it and check it with a voltmeter.
Click to expand...
Click to collapse
I know this is not the same device but i let my yp-g1 (sgp4.0 for those not familiar with model numbers) drop all the way to 0, something I didnt think was possable. what i did was plugged it in and let it sit for about 10 minutes until it had enough charge to turn on and let it finish charging, good as new. What I learned from this is that the battery will always have some charge, however, it will not necessarily be enough to turn on. also batteries tend to output just a little more than they are speced, for example, if you take a standard brand new AA battery and hook up a multimeter to it, it will read something along the lines of 1.8 volts, this is ok and the battery in thease devices does the same thing. in the end, don't worry about it.
So, I drained the battery until the phone turned off and connected it to the oem wallcharger, but i used a monitor to show voltage, current, amps and time. This showed a quite mysterious behavior of the charging process, which lead me to this thread. I'm hoping that someone can explain this.
First of, the phone charges at 9V when plugged in the wall - this is to archieve the so called fast charge. The current is ca. 1,6A. When the phone reaches 50 pct. or so, the current falls quite a bit and even further, as the battery is charged. When charged to aprox. 80 pct., the current is 0,3A +/- (still at 9V). Why does the current have to be so small? I mean, 0,3A is what my headset charges at.
Furthermore: When the phone said 50 pct. charged, my monitor showed that it had only gotten about 800 mA, which is quite weird due to the capacity being 2650 mA. I know that the phone measures the voltage over the battery, but still... It's weird, or?
When fully charged, the multimeter shows a total of 16xx amps... I'm confused.
I'm sorry for the bad english and sorry if this is the wrong forum.
Edit: The image is taken when the phone said 50 pct. charged. As shown, the current has already gone from 1,6A to 1,25A
It doesn't really surprise me to see that you noticed some weirds results when you tested the battery. I don't know much about the battery Hardware problems but I got weird problems with my battery as it skipping 4 percents (going down from 7 to 3%) and dropping really fast. I don't think your results are that mysterious as a lot of people have been complaining about their battery life and your data does confirm all the battery life issues.
I guess it is just the s6 so far. I havent had any issues but i also charge when i get down to 20%
Sent from my SM-G925P using Tapatalk
Hi everybody
I've got a major battery issue with my three year old Nexus 10.
The battery indicator shows something around 75%, drops to 0 in a split second, switches in energy saving mode (notification and navigation bar are turning red) while it shuts down.
To verify I made an Automate Flow saves the battery charge every second to a text file. Result:
Code:
82,82,82,81,81,81,81,[...],73,73,73,73,0,0,0,0,0 EOF
Okay, it thought to myself, after three years the battery is broken. So I bought a replacement battery (Samsung original) and replaced it - but nothing changed.
To clear all old stats (and running Android 6.0.1) I wiped everything TWRP offered and installed CM13 - but nothing changed.
Now my only guess is, that there's some EPROM (or other memory hardware) that stores battery stats.
Can you, dear forum, help me fixing that issue?
No one?
Has anyone of you guys changed the manta battery, yet?
Same thing after OTA upgrade in D6563
I'm facing the same problem here with my d6563, after the MM OTA update i started to face quick vertical battery drop, but we're not the only ones, some users are reporting this issue in a lot of devices, some of them after update, some others after rooting, some of them just after some apps update, and the thing is that nothing seems to work, some users claim to have solved the issue, but they are just talking to fast, because the problem comes back the same day, they just think taht the battery data is accurate but then the drop accurs, si, i'm starting a new thread listing all the solutions tghat senior members have recomended and failed in order to track this problem to his roots once in for all, it's been happening since kitkat at y has come worse since marshmallow
keep in touch to see what we can figure out about this.
Battery _stats_ issue
I had, ummm, similar issues with my TCL S720 (in less degree) and now with TCL M2U (TCL Meme da 3N M2U AKA Alcatel Flash+) phones.
TCL M2U has 3500mAh battery capacity.
After full charge it discharge normally to ~40%. Behind 40% it is discharged to 1% for a few minutes and shuts off!
If then I charge it again to 100% then it eats about its full capacity (~3500mAh) - checked with Keweisi USB Doctor and shows 100% charge, but discharges to 40% again.
On other firmware there is similar effect but for 30% level or 15% level, it depends on firmware.
I think that the battery is OK but the charge percentage display is wrong.
Another strange thing is when I see the charge level using Ampere app. It shows i.e. 50% battery level and 3.762V voltage on the battery. Then I plug it in charger. For a short time the voltage rises to 3.8V and more but the battery level is lowered to 45%! Also if I charge the phone from discharged state then the battery level is 1% for the long time, then it quickly raise to ~30% and then shows charge process normally (almost linear). The USB Doctor show the charge process smooth almost all time (from stronger current to weaker).
So I join to the 1st post question: where is the battery's _real_ voltage level data?
Hello, i have some bad battery issues, my battery just disappears. According to 3C battery monitor the battery has capacity around 29~~ mAh. I have installed build 23.5.A.1.291. It wasn't so bad until i bought new smartwatch and i kept the bluetooth on during my time in school. I remember that i had even three days of battery on the KitKat 4.4.4, but now i have to charge every 10-12 hours. Also, i found someone who has same issue on Z3. Today i did factory res. and after using it had 97% i put it into sleep and didn't use it, after few hours it has around 85-83%.
It is soft charging function, it will charge your phone but not full capacity. This function will increase battery lifespan but reduce usage time
BTW, try charge your phone many times after installed new ROM, then it will stable
If not, maybe your battery has problem
I am thinking about changing the battery because AccuBattery has shown me that it has 2562 mAh, even if i heard that this app is not accurate. Also, i am thinking if its worth to pay 40 euro for battery change or buy a new phone like Xperia X or Google Pixel.
I seem to get reduced maximum capacity even after fresh battery replacements.
Most recently I purchased a new replacement battery from iFixit. With this new battery, just like the previous one I bought a year ago from Amazon, my phone charges the battery to a what seems to be around 80% of its capacity. The maximum voltage when reported charge reaches 100%, as reported by the phone, is 4.225V (according to multiple apps). Capacity as measured by AccuBattery is around 80% or 2800 mAh.
I've tried many things, such as the battery calibration multiple times (both method 1 with USSC codes, and something like method 3 which iFixit recommends), without any major apparent improvement.
Things I am wondering:
Should the battery voltage when at 100% charge be closer to its rated 4.4V than the maximum 4.225V my phone is seemingly able to reach?
Can I expect to see improvements if I keep going through a few cycles of battery calibration and full charge/discharge?
Is there any other way to reset the phone's perception of battery capacity or wear than the battery calibration options?
I found another thread with a similar description to my own experience here.
In 3 years I have replaced battery 4 times, now something odd is happening.
I'll make a note to dig out my old USB tester and check how much total juice is pushed into the phone with a charge from <5% to 100%.
More details of my battery history for more background and for anyone interested:
I used the original battery from purchase in late 2018. My charge pattern for the first 2 years was typically charging to 100% every night, and topping up during the day as necessary.
During winter 2020 it performed terrible in the cold (not any extreme cold, only around 0 C), and once drained from around 80% to 35% in less than an hour of continuous use (photos, filming) and then died. After this I changed my charging pattern to where I was keeping the phone from exceeding the 70-40% range as much as possible.
In December 2021 I purchased a replacement battery from Amazon (supposedly original). The original battery was reportedly at 80% capacity says AccuBattery. How reliable that measurement is I don't know (it is all data reported by the phone itself as far as I understand), but the capacity had gradually decreased over the three years of use. I can't recall the voltage readings though, and I don't seem to have any screenshots saved from that view.
The new battery didn't ever seem to be able to exceed the capacity of the 3-year-old original battery (which had gone through over 1,100 charge/discharge cycles as tracked by AccuBattery) that it replaced. It's more stable (especially in cold conditions) but has not brought any increase in usage time compared with the battery it replaced.
With the now 10-months-old Amazon battery, having gone through less than 400 charge/discharge cycles according to AccuBattery (which is relative to the max capacity of approximately 2800 mAh or 80%), my phone in the past month gave me the pop-up notice indicating a poor battery. The capacity reported hasn't changed much over these 10 months of use.
Update with USB tester and comparison with a Samsung Galaxy S5 Neo.
TL;DR: 2800 mWh is the new 3500 mWh
First, S5 Neo.
I have an old S5 Neo, last of its era of Samsung phones with easily replaceable battery. I purchased a new battery for this phone from iFixit in the same order as the S9+ replacement battery.
S5 Neo's battery is rated at 4.4 V (3.85 V nominal) with a 2800 mAh capacity, or 10780 mWh. Depleting the battery and making sure the phone would no longer switch on with the power button, I charged it from 0% to 100%.
After slowly charging for 3 hours at just below 4.8 V and 750 mA for most of the time, the USB tester showed 10780 mWh, and the phone showed 92% charge. At the 3h 30min mark, shortly after reaching 100% (I didn't catch it perfectly), USB tester showed current had dropped to 350 mA and total charge delivered was just over 12000 mWh. After another 10-15 minutes the charge current dropped to zero and total power delivered showed 12326 mWh.
The S5 Neo phone, using the app GSam Battery Monitor while the phone is otherwise idle, it shows an internal battery voltage reading of 4.38 V when fully charged, still plugged in and trickle charging. Once it's saturated (charging icon disappears) the voltage drops to 4.33 V.
Going by the USB tester results and progress shown by the phone, and with the assumption that the battery is able to be charged to its full rated capacity with this old phone, the battery charged to capacity with an efficiency between 87.5% and 92%.
I also captured a few mid-way readings. Here is the complete list of my captured readings including comparison to rated capacity assuming perfect efficiency (with extrapolated total charge for levels below 100%):
100% (charging current at 0.0 A)12326 mWh~114% of rated capacity100% (still charging)12062 mWh~112% of rated capacity92%10780 mWh11717, ~109% of rated capacity81%9291 mWh11470, ~106% of rated capacity62%6440 mWh10387, ~96% of rated capacity33%3160 mWh9575, ~89% of rated capacity19%1868 mWh9831, ~91% of rated capacity
The extrapolated charge to reach max rated capacity is increasing as charge level goes up, which I think is kind of expected. Conversely, the efficiency is a little lower than I would have expected. Still, the total power required to reach 100% exceeds the rated capacity by a fair margin. Better still, the phone itself reports a battery voltage near the battery's rated 4.4 V.
Second, S9+.
As mentioned in the original post, the internal battery voltage max reading is 4.22 V, and the capacity seems to not reach the expected level. Checking the Battery status option of Diagnostics in the Samsung Members app to check the battery, it shows it is in "weak" condition. Resetting all the battery related readings using USSC codes (see battery calibration) doesn't seem to change anything.
The battery is rated at 4.4 V (3.85 V nominal) with a 3500 mA capacity, or 13475 mWh. With fast charging disabled, and after draining the phone until it powered off and would no longer power back on, I started charging via the USB tester. I'm using a Samsung travel charger this time, which delivers a little more current than when I charged the S5 Neo.
Charging starts out at just below 5 V and 1.5 A. Current quickly drops to 1.172 A, and somewhere between 33% and 50% it drops to 1.072 A. This current is stable until beyond 81% and then starts to gradually decrease throughput the rest of the charging cycle. (Actual charging current is slightly lower with screen off vs screen showing current charge level.) This I believe is indicative of the battery capacity (or perhaps rather the phone's perception or expectation of the battery capacity) is below its typical levels. It could also be a difference in how the S9+ charges compared with the S5 Neo, or perhaps less likely a difference between the chargers used, I can't really know for sure with only my two samples. In comparison, the S5 Neo kept charging at essentially the same current level between 0% and 92%.
Again, here are a few mid-way readings, as well as the extrapolated capacity assuming perfect efficiency:
N/A13475 mWhnever reached100% (charge current at 0.0 A)12341 mWh~92% of rated capacity100% (first reached)11982 mWh~89% of rated capacity92%11398 mWh12389, ~92% of rated capacity81%10053 mWh12411, ~92% of rated capacity62%7646 mWh12332, ~92% of rated capacity50%6174 mWh12348, ~92% of rated capacity33%4100 mWh12424, ~92% of rated capacity
Oddly consistent, this ratio between charged power and percentage charge, at around 92% of rated capacity throughout almost all of the charge cycle.
The total power required to reach 100% is very disappointing. Even assuming perfect efficiency, it is well below the battery's rated capacity. Assuming similar efficiency as the S5 Neo at around 90% translates to roughly 80% capacity at full charge. This mimics closely the estimates from AccuBattery, which shows 78% capacity after 12 "full" cycles.
To reach a "saturated" 100% requires equally much power for the S5 Neo as for the S9+, even though the S9+ should have a battery with 25% more capacity.
Now that I have externally validated that my 4-year-old S9+ is only ever able to charge my fresh newly replaced battery to 80% of its rated capacity, I suppose the optimistic view is that it's now a forced charge limit for substantially increased battery longevity. While this is functionality I do want, it is something I'd prefer to have the option to use, and with the ability to top up to 100% when necessary.
If I have the opportunity, I may drop by a Samsung service center and ask if there's anything I can do to reset the battery status, or retrain the phone's perception of battery capacity.
Thank you for coming to my TED talk, and have a great day.