I just saw this yesterday i've done a fresh install of the latest firmware from official site and just realized that my battery is discharged so i plugged my Archos 70 Internet Tablet to the charger and left it charging one night and yesterday when i just unplugged it and started my tablet showed me just 97% charged .Has anyone got the same problem?
Your battery gauge is lying to you (and it's not such a bad thing).
Basically, all modern device battery gauges are inaccurate/deceptive in one way or another. The manner in which Archos' battery gauges are inaccurate/deceptive seems to possibly vary between firmware versions, leading to much wailing and gnashing of teeth on the forums over probably illusory battery drain "bugs".
What I want to know is whether it's possible to reset battery stats, and if so, how?
Have you searched for that in the DevForum?
It's explained there
I used battery calibarator (needs root) from market & is a little bit better since or maybe not & charged full to empty a few times too.
Related
Hi,
I have been facing these two weird issues:
1. Sudden drop in battery percentage: I have found that this occurs only when i reboot my phone (not every time though). So when the phone restarts, the battery is down by 20-30% or sometimes even more. And its not a one time issue. I have seen it happen at least 3-4 times in the last 5 months.
2. Sometimes when I am not charging the phone, the battery % keeps increasing slowly. This has been happening lately since the time I have rooted and flashed my phone. 2-3 occurrences that i know. I don't recall seeing this when I was on stock. Just this morning I plugged my phone off the charger at 52% and I left for work. And right now at this moment when I am writing this, the phone is at 58% charge!!
Just FYI.. I calibrate the battery every time I flash a new ROM.
Thanks,
Sam
sammy.samsung said:
Hi,
I have been facing these two weird issues:
1. Sudden drop in battery percentage: I have found that this occurs only when i reboot my phone (not every time though). So when the phone restarts, the battery is down by 20-30% or sometimes even more. And its not a one time issue. I have seen it happen at least 3-4 times in the last 5 months.
2. Sometimes when I am not charging the phone, the battery % keeps increasing slowly. This has been happening lately since the time I have rooted and flashed my phone. 2-3 occurrences that i know. I don't recall seeing this when I was on stock. Just this morning I plugged my phone off the charger at 52% and I left for work. And right now at this moment when I am writing this, the phone is at 58% charge!!
Just FYI.. I calibrate the battery every time I flash a new ROM.
Thanks,
Sam
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Click to collapse
I think that Entropy can answer this better but I'll still give a try.
[Q] Why these sudden battery level drops after reboot?
[A] The sudden battery drops is a known 'issue'. It's not a bug, it's the way the fuel gauges are designed for i777.
[Q] How to avoid these sudden battery level drops?
[A] Try not to reboot while it's on battery if the battery level is <50%. In that case, if you need to, make sure that the phone is plugged in for charging and then do the reboot. That should prevent those random battery level drops.
[Q] Will using battery calibration apps help?
[A] No, the way the i777 fuel gauges are designed, there is no need of battery calibration apps. The best way to get accurate battery level readings is to allow the battery to go through full 100%->0% battery discharge cycles for atleast 2-3 times. After each full discharge remove the battery, keep it out for a minute or two and reinsert, recharge the phone.
PS: The weird battery charges that violate E=MC^2 law might have to do with your battery not having been through proper discharge cycles (and thus not having been properly calibrated) after flashing a new ROM.
@Mod These questions are asked many times, how about adding them to FAQs (not sure if that will help though )
@Entropy Please review this post.
Pretty close.
Calibration does nothing on our device - the fuel gauge is designed so that it will always converge towards truth instead of diverging. Also, the "wipe battery stats" method of "calibration" has been proven to do NOTHING on ANY device whatsoever - https://plus.google.com/105051985738280261832/posts/FV3LVtdVxPT - The "charge battery to full" and "discharge/recharge" battery are valid tactics on some devices, but NOT any Galaxy S or S II device (maybe the ****rocket and T989, but not the I9100 or I777.) - There's a slight chance this may change with ICS on the I9100/I777 but not likely.
The advantage of this is that it never needs funky calibration cycles other than "just wait"
The disadvantage is that the gauge will get thrown off in a few limited corner cases - and the "two" issues described are one widely documented one. The gauge gets confused and falseley reports low by heavily battery load immediately following a reset, and takes a few hours to converge back to normality (during which the estimate creeps upward, because it was lower than reality initially).
And yeah this should probably be in the FAQ. I'll work on submitting it this weekend.
Thanks guys..
So looks like the sudden battery drop issue can only be prevented but not fixed!
sammy.samsung said:
Thanks guys..
So looks like the sudden battery drop issue can only be prevented but not fixed!
Click to expand...
Click to collapse
It's pretty much the characteristics of putting a battery under load and using voltage to dictate battery level. when you draw a lot of current from a battery you'll usually see the voltage level drop, more so as the battery is discharged. Booting up the phone consumes quite a bit of power, substantially more than the device at idle. So upon start up the device reads the voltage level to dictate battery level. Since the device is under a relatively high power draw, it sees a lower voltage than would be at idle. It in return thinks the battery is lower than it actually is, or would read under idle load. the battery level will actually creep back up slowly because it will read a higher voltage, than it did upon start up.
The only way i could think of to get a more accurate reading would be to delay the initial voltage reading/recording upon start up, or to use the last voltage reading to help dictate the battery level. But i have no idea if that's even possible, or if it would conflict with some sort of other operation.
I just don't get it!!!!!!!
I was playing multiplayer in bombsquad today morning wid my friend .My battery was @ 86% at that time
suddenly my battery came down to 15% then in the other moment it went to0% and mt phone got shut down. I plugged my phone in charge through the power bank and rebooted it and I saw my phone was @52 % I started using my phone and it again suddenly sut down this time without even a battery low message
it's been happening regularly wid my phone since then.
What could be the reason? And what can I do to make it right?
MY PHONE INFORMATION
MODEL:SAMSUNG GALAXY CORE GT I8262
ROM:USING STOCK ROM(ROOTED) (CWM RECOVERY INSTALLED)
avijeetpandey87 said:
MODEL:SAMSUNG GALAXY CORE GT I8262
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This is the wrong forum. Even though the thread is about a problem similar to yours, we don't know anything about your phone.
If you have a removable battery, you might try purchasing a new battery, but that's just a guess.
The forums for you phone are here.
Ok, I know my phone has battery-releated issues though im trying to figure what is the source and replacing it immediately.
I'll list couple of my chekcs around it:
Having it on charging barely gives the charger the "current heat" its supposed to have with it charging, therefore - resulting in a slow paced charging.
Disconnecting it from the charging port drops the battery down to 10-50% in some times, 60-80% the other times, but there are times that it's going down just to 99% or even keeping it at 100% like it should be.
Ive checked with the charging current app and I've seen it around 200-300, and after disconnecting and reconnecting it couple of times went to around 700-800, probably the reason for the slow charge.
Now my main problem is actually the 2nd one, I dont mind if my charging speed is slow, but I want it to deliver. are those battery drops related to the charging current? my main suspictions are the trickle charge cycle, that if the charger gets 200-300 mah charge, and it calls for a trickle charge, the amounts for it arent enough to keep the phone up even at minimal use, and report a fake 100%.
I havn't tried a different cable yet since I dont own any (same for charger) but if I will get any new cable, is there any rule I should follow to know the quality of it? like slimmer/fatter ones as an example?
And how do I know its not the battery that reached its cycle cap?
Thanks in regard for anyone who contributes to this post.
Ron
Search and read, same question asked a thousand times. Replace charger, lead and battery -done.
I have already searched for it for couple of threads. I have seen that it's a procedural solution but the main thing I'm trying to eliminate from the checklist is a bad charging port and board. Since my cousin already had that problem and he sold his phone it gave me that sort of red light and I haven't come across of a way of diagnosing it "without a cost" for the parts, I'd buy the pays only if there's no possible solution to diagnose it because those parts are quite expensive here unfortunately :/
how about battery calibration?
try that, and maybe your problem because u playing with tweaks or kernel maybe?
also try, install new custom roms. and format your system data
maybe it'll works
poemsme said:
how about battery calibration?
No that is only done by the battery read faqs and guides please .
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Click to collapse
I think its battery issue, cant say for sure, but it also dies up on around 30% now (changed to 4.3)
I own the phone since april this year, and a friend of mine told me she had similar issues and after replacing the battery, it worked out flawlessly.
Also note that my phone is plugged in the charger for a lot of time and I barely plug it off (might be an issue as well)
Okay so I've switched the cable and the app shows flawless 1amp charge.
question regarding it:
if the phone is charging flawlessly like this. Could it eliminate my flickering screen and phone hang issue? (Due to "bad charging quality" if that lesser cable? )
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?
Hi everyone,
it seems that battery issues on these devices are quite common, but I wasn't able to find out much about my observations, yet.
I recently got this model cheap in stock condition and decided to revive it. It's running /e/ OS currently, but the displayed battery percentages are extremely erratic.
When fully charged, the battery drains very consistently for 15-20% per day while in idle. However, if rebooted at any time, the phone immediately shows a completely drained battery at 2-4%. It will stay that way until fully charged again and despite the displayed percentages, the battery-app (correctly?) calculates multiple hours of charge remaining.
It does seem like some kind of software issue, since the phone does not turn off or refuse being charged like other users have mentioned and the battery still does supply hours/days of power.
On the other hand, the issue was apparently also present on the stock Android, so it would have to be either firmware- oder hardware-related?
Has anybody experienced something similar with this or any other device and is there anything I can try to fix this?
Or is the battery itself malfunctioning and needs to be replaced? If yes, are there any brands or replacement models to recommend for this phone?
NovusDeus said:
Hi everyone,
it seems that battery issues on these devices are quite common, but I wasn't able to find out much about my observations, yet.
I recently got this model cheap in stock condition and decided to revive it. It's running /e/ OS currently, but the displayed battery percentages are extremely erratic.
When fully charged, the battery drains very consistently for 15-20% per day while in idle. However, if rebooted at any time, the phone immediately shows a completely drained battery at 2-4%. It will stay that way until fully charged again and despite the displayed percentages, the battery-app (correctly?) calculates multiple hours of charge remaining.
It does seem like some kind of software issue, since the phone does not turn off or refuse being charged like other users have mentioned and the battery still does supply hours/days of power.
On the other hand, the issue was apparently also present on the stock Android, so it would have to be either firmware- oder hardware-related?
Has anybody experienced something similar with this or any other device and is there anything I can try to fix this?
Or is the battery itself malfunctioning and needs to be replaced? If yes, are there any brands or replacement models to recommend for this phone?
Click to expand...
Click to collapse
its the battery that needs to be replaced. I had the same issues with my moto z (xt1650), the battery replacement fixed it all. the battery life is now incredibly longer than before and i didn't experienced any suddent drain at reboot.
all that for just 13,99$
EBay : Replacement Battery-Compatible with Moto Z XT1650 GV30
Recently when I've been charging my phone, it shows only up to 58% when I know its fully charged. It shows that percentage whether it is booted up or not. I have tried letting it die all the way and then charging it - and that yields strange results. Sometimes it shows at 58% then recognizes its fully charged and sometimes it just shows the 58%.
It could be due to me not having the original fast dual charger and using an asus singular fast charger but I couldn't find a replacement for the original that suited
Any suggestions?
Here's some stuff to read (quite old, though):
https://forum.xda-developers.com/t/...battery-on-your-device-root-non-root.3308554/
I remember having similar trouble, the stats were showing just inconsistent data (AFAIR, shutting down already at some 30%) and deleting that stats-file helped (at least I think so).
Other than: How about charging it at a "normal" USB-port from your computer?
PS: Perhaps some of your friends have a USB-meter like
https://lygte-info.dk/review/USBmeter RD Tech USB Meter TC66C UK.html
That way you could see how much of your phone's 5500mAh is really charged...
I got the same problem as well it only charges up to 58% isn't there any fix to this yet?