Hi all and Happy New Year.
The problem is that while my T-700 is turned off (not screen off) and having installed a new battery (doing all the preparations needed, like reset to factory settings, clear cache, recalibrate new battery), in two days time the battery from 100% is COMPLETELY DRAINED like a freaking 0%! And allow me to repeat ...WHILE TURNED OFF!!!
The battery is brand new, and the tablet is "untouched" (meaning unrooted, no UB, Knox is 0 and I have installed only the Official OTA's provided by Samsung).
WTF???
I've contacted the place where I bought the battery and they told me that they will send me a new one, BUT that was the exact same reason why I bought this one and changed my battery in the first place (of course I haven't told them that) lol.
Could this be a hardware issue, or was I so unlucky that I just happend to buy a "dead" battery?
Any ideas? Plz help, I'm in desperate need of my T-700 for working purposes...
Thanx in advance!
ANYONE??????
I can't say my battery is brand new, but i have been having battery issues lately no matter what rom I use or if I return back to stock. I have no idea why it would be doing so though.
Do you think we can blame the tablet's motherboard? Cause it's the last thing I can think of that would be responsible for these issues since software obviously isn't (At least in my case I hope for a DOA battery issue fingers crossed..).
Anyway, I've ordered another battery (e-bay) that would be arriving in approx 3 weeks. We'll see...
If no luck again, then a repair center will provide the appropriate answers...
I have the same issue with my Tab S SM-T700 and I have tried flashing many different ROMs, the problem still exists. I would suspect a hardware fault, either the battery management IC or some other consumer that doesn't power down properly. Don't think this can be fixed without a new motherboard, at least it's still usable plugged in!
Pis_Man said:
ANYONE??????
Click to expand...
Click to collapse
I have purchased several batteries for my SM-T700 from different suppliers on eBay. Apparently, there is a big market for batteries pulled from old devices and relabeled as "new". Based on the poor specifications (I.e. battery capacity, battery life) I suspect that not one of them was actually new. For example, one battery held so little charge after just 16 discharge/recharge cycles that I had to replace it. Perhaps, you have a bad battery.
There is an option somewhere in the settings to turn off wifi when the tablet is not in use. This solved this problem for me. It's the misbehaving apps that "call home" or use other resources while your tablet is supposedly asleep. While it's possible to hunt down at least some of these apps, it's kind of hopeless because some of the worst offenders are google's own apps and services. When wifi is not available they all go to sleep and the tablet can now stay idle with screen off for days without draining battery. Before I enabled this option, the tablet would literally drain 1 percent of charge per hour even though not used, so after two days of no use 50% was gone.
Akopps said:
There is an option somewhere in the settings to turn off wifi when the tablet is not in use. This solved this problem for me. It's the misbehaving apps that "call home" or use other resources while your tablet is supposedly asleep. While it's possible to hunt down at least some of these apps, it's kind of hopeless because some of the worst offenders are google's own apps and services. When wifi is not available they all go to sleep and the tablet can now stay idle with screen off for days without draining battery. Before I enabled this option, the tablet would literally drain 1 percent of charge per hour even though not used, so after two days of no use 50% was gone.
Click to expand...
Click to collapse
I see what you mean but my problem is when the tab is turned off not asleep...
ROM-Rookie said:
I have purchased several batteries for my SM-T700 from different suppliers on eBay. Apparently, there is a big market for batteries pulled from old devices and relabeled as "new". Based on the poor specifications (I.e. battery capacity, battery life) I suspect that not one of them was actually new. For example, one battery held so little charge after just 16 discharge/recharge cycles that I had to replace it. Perhaps, you have a bad battery.
Click to expand...
Click to collapse
True... But previously bought battery was not from ebay but from a retail seller... The newly bought one will be from eBay. I'm still waiting on that. Will inform when it will arrive...
That was it... Main board problem... Need to spend 200€ (which of course I won't) in order to fix it. Still, I can work with it as long as it is always plugged in... Unfortunately it was not a battery issue...
Related
When I got the jasjar 3 days ago there didnt seem to be any issues, so I upgraded to the Helmi_UNI_AKU3.3_v1.2 everything seemed to work as it should then my battery reached 40% and bam the device shutoff. So I tried the 3.5 and same thing, now I have my original ROM JASJAR_WWE_13076_164_10900_wwe_ship.exe back on and its a little better it gets to 33% then dies.
I know this wasnt happening prior to me owning this device as it was my close friend who gave it to me.
Can anyone shed any light on why this would be happening?
Thanks in advance.
Battery
You have to buy a new battery. Your battery is damaged. A few months ago I had the same problem. The Universal battery has a life spam of 6 to 12 months. At a certain point when you drop your phone or flash a new image, the battery forgets its state. It will think that there is enough power left but in fact the voltage is dropping to fast and the phone shuts itself off. Believe me you need another battery.
Thank you
Thank you very much for your advice, I just ordered a new one.
So when I flash new roms I should use my old battery?
Thanks again
Question
Does anyone know why batteries die so fast.
I had a battery the first go out at 20% then it grew to 55%
I couldn't use my Universal for a day.
I went back to the store and got a new battery.
I think, when you flash your device with a new rom and or radio. You should have your device fully charged.
Can anyone confirm?
Not sure on the answer, but I have 2 batteries, one 12 months old the other 2 months old & the Uni with 3.3 on it started this behaviour yesterday whichever battery it is using - roughly 30% left.
I am upgrading my other Uni to 3.5 just now to see whether that one suffers the same.
As I have a new battery & am having the same fault I am not so sure .....
cottinghamm said:
Not sure on the answer, but I have 2 batteries, one 12 months old the other 2 months old & the Uni with 3.3 on it started this behaviour yesterday whichever battery it is using - roughly 30% left.
I am upgrading my other Uni to 3.5 just now to see whether that one suffers the same.
As I have a new battery & am having the same fault I am not so sure .....
Click to expand...
Click to collapse
It is a hardare issue, unlikely a software issue.
I do not agree. At first I had the same idea. I thought the device must be broken. I bought a new battery but still I had the same problem. But at the tech center thay gave me a free new battery to prove I was wrong. I got a original MDA PRO battery and when I use that battery it stops working at 2-3%.
1. So order an orginal battery. Use the old one when flashing.
2. Be sure that the battery is fully changed. Flashing can skrew-up the memory state of the battery. When that happens the current sate will be te fully charged state and it looks like it stops at 40%. But in fact it is does never get fully loaded.
This issues have already being discussed and sort of already concluded in many other threads, you can make a search.
Just to summarise,
1. Most of them agree it is a battery problem. Lithium Polymer is no good after around 6 months.
2. Few isolated cases of not battery problem which is hardware related.
3. I always activesync with my old spoiled battery (this is just my personal advice as I do not want to risk my new battery). This also avoids USB charging.
4. Charge only when LED is RED (less than 10%) and until LED turns GREEN (real 100%).
Add 2 more O2 XDAs with HW probs
Mine and a work colleagues Execs (bought early Jan 06 under their ****-up £99 scheme) both started to shut down at odd power reserves as in this thread. Both had new batteries, both before and since new batts sometimes wouldn't charge or recognise the power cables.
Also, both have been back to O2 for repairs with the result when they come back, one is in exactly the same state as before, and the other (mine) stck in splash screen. Both came with a note from O2 saying problem found and repaired, and even a QA check slip (ie:evidently no QA - are they pulling a fast one or what?)
Anyways, both are going back to O2 to try again.
If you are in warranty, get it back to them. Wait for the battery by all means but my experience says this is more than a battery problem.
Sorry, thats not what you wanted to hear I know.
Joe
Hope you get your Hardware problem fixed, like those cases mentioed in the other threads.
Mine is the battery problem like most cases mentioned in other threads.
My new battery now can goes from GREEN 100% to RED 0% to complete shutdown is possible.
But I normally charge around RED less than 5%.
I've had my new desire z about 2 weeks now, and am utterly dissapointed by a frankly dreadful battery life.
It's my second DZ, given the original was nicked, but (kicks self) wasn't insured, so was purchased from a supplier that shipped my phone from Hong Kong (I live in UK, and the new phone is an identical model, except for a slight difference in key layout - A2727 I think is model number)
The original phone would give me over two days life with very low use, which i considered to be fair for a decent smart phone.
The new phone barely gives me 10 hours with no use. I've done a couple of tests - unplugged it at 2am, but 8am it's at 30% or lower. This was done with all data connections turned off.
If i leave the new phone to go dead then that's it - it won't charge. The only way i've found to get juice back into the battery is to hold it in my old touch-pro 2 until it's charged enough to charge from the desire.
Last night was the clincher. I've gone out with some friends to the pub. I had a conversation over it, and checked my battery life - 42%. As a last dith effort i factory reset the phone at that point to rule out a mischevious app, and checked - 39%
Within 2 hours, and with no use at all that was down at 8%. In order to avoid the charge issue i cut my losses and turned it off at that point. Once home (oh, about 4 hours later maybe) I was unable to turn it back on. I then left it plugged in overnight, and was still unable to turn it on this morning until i'd done my cross-phone charging trick.
I'm now entirely convinced there's some form of hardware issue at fault here, so i'm wondering if anyone else has had the same problem with this phone before? I see lots of thread regarding poor battery life, but most seem to be solved by turning data off or some rouge app, neither of which are an issue in this case. Also, any hints for making my life easier when I phone HTC tomorrow? I've read elsewhere their support might not be all it should be.
Thanks in advance for any help! I've ready to pull my hair out as what is a fantastic phone otherwise has been completely ruined by this battery issue.
I think you should get a new battery to rule out that the battery itself isn't a problem. I had similar issues with my G1 a while back and it solved a lot of wierd, seemingly unrelated problems. Batteries are pretty cheap online, $15 or so and some are free shipping.
The way that I figured out my battery was toast was by comparing it to other batteries. it had a bulge in the center where it should have been flat. Fingers crossed it isn't hardware.
had already tried a diff battery (did you know you can chew a corner off a touch pro 2 battery and make it fit??) Which i know worked fine in the old nicked dz and imo as i was getting same issue ruled out battery problem.
anyway... phone has now been returned and i'm waiting 2-3 weeks to get it repaired under warranty (though am hoping for complete replacement obviously)
Chewing on batteries has got to get you extra xda brownie points. I'll remember that
Sent from my T-Mobile G2 using XDA App
I'd like to think there was some techincal or engineering skill in there somewhere.
but it was mostly "Well, apart form this nugget of plastic they're the same shape..."
I'm having the exact same problem... When you take you shutdown to recharge a dead battery, does it sometimes try to turn back on? I left my apartment like 30m ago with 100% battery, and I'm at 84% and declining. There's nothing running. And I've replaced the battery, same issue.
I think I might just RMA this one.. seems like an engineering issues.
Edit: I'm the 40 seconds it took me to type this, battery dropped to 82%.
Wanted to bump this post. I've since wiped / reloaded and wiped battery stats. It's still jacked. I think it's an internal electrical thing. Reason is: I'll power down to take the battery out. When I put the other one in, it'll turn back on. Or if I power down to charge, it'll turn back on - plugged in or not. I don't want to deal with the RMA process again, but I think it's my only choice. I've taken two phone calls this AM @ 100%, and it's at 96% now. Drives me insane. Ugh... I'll call TMO. Anyone know if the replacements are still rootable?
So... I had my phone replaced, and it's still doing the horrid battery thing. Flashed CM 7.1 RC3 or w/e the latest is, cycled one battery - and it drops like a stone. I have two chargers (one at work, one at home) and they both charge the phone up to 100%. But it's still losing battery life quicker than I'd like. I used to be able to get a good 18 hours out of this phone. Even with a new battery and a new phone, it's acting up. I'll try to flash an older ROM and see if it's the same thing. I updated to #130 nightly from 7/10. We'll see how it lasts today. But I do remember I had horrible luck with CM's ROM's on my G1. Battery would just drain for no reason. The main process taking up the most battery life is "Cell standby" so I changed to the latest radio - and it still drops. OP - have you figured out your problem? I've removed a ton of apps, and it's still messing up. I listen to music for... 45m in the AM, and I get down to 54%. I've formatted my SD Card as well.. it's driving me insane.
I just flashed CM 7.1 a few days ago and while the ROM is great, it does seem to be a litter harder on my battery than 6.1 was. With light/moderate usage yesterday, I got about 16 hours and that was running the battery almost completely dead. With heavy usage, I get about 10 hours and need a bump charge in the afternoon.
You might want to look into getting a Mugen 1800mah battery. You can get them on Ebay from 35-40 dollars. The seller 'nakedcellphone' is based out of Southern California and another user has confirmed ordering from them and getting a legitimate battery (lots of fakes on Ebay). Either that, or carry a charger with you...
Have you tried using Watchdog to see if there are any 'rogue' apps that are causing the drain by running in the background? What about going to spare parts > battery history > Partial Wake usage? There it will show apps that are draining your battery when you're not 'actively' using your phone. For me, the Android System is the highest drain in that menu. Good luck! Hope some of this helps!
I just checked spare parts, and there's nothing too odd in there. Just my music app. And I've changed that too - thought Winamp was killing me. I'll check Watchdog. This is a brand new OEM battery along with an RMA'd G2. It has to be the OS / Radio or something. I've stripped like every non-essential app too.
Dear all,
Recently my Note is facing a weird problem. While my son is playing a game, the battery drops 20-30% in 10 minutes. If I shut down the tablet and re-power then the battery goes to normal again.
In the battery stats I can see a huge drop during game usage and then up again on reboot.
I performed a factory reset but the same happens....
I flashed the Kit Kat via Odin.... but the same
Any ideas?
Drain the battery down to below 5% then charge it to 100 and it should be fine. It happened to me once and after a full charge after a full drain it never did it again
Sent from my SM-G900T using Tapatalk
toyanucci said:
Drain the battery down to below 5% then charge it to 100 and it should be fine. It happened to me once and after a full charge after a full drain it never did it again
Sent from my SM-G900T using Tapatalk
Click to expand...
Click to collapse
This is what worries me.
I drained the battery and charged it fully powered off. It did it again. I drained the battery and charged it fully powered on. It did it again.
If I'm using it for browsing, papyrus, images etc its fine. This happens only in games and when i reboot the battery percentage is ok again.
strange....
STELIOSFAN said:
This is what worries me.
I drained the battery and charged it fully powered off. It did it again. I drained the battery and charged it fully powered on. It did it again.
If I'm using it for browsing, papyrus, images etc its fine. This happens only in games and when i reboot the battery percentage is ok again.
strange....
Click to expand...
Click to collapse
I had the exact same problem as you are describing but additionally, my overall battery life wasn't lasting as long as it should either. I ended up sending it to Samsung's repair center to get fixed. I'm not sure what they did but some other people on the forums suggested it was a motherboard issue.
So the capacity of the battery seemed just fine but the readings were crazy (dropping from 50 to 5 in minutes and then on reboot back on 50).
After 2-3 full cycles of charging nothing changed. Flashed fw nothing changed. Went to Samsung service and they just informed me that they changed the battery and now performing final checks.
Hope this will solve the issue. I'm too lucky that I am in the "6 months warranty" window for battery...
How does one go about sending it into Samsung? After getting it back, did you see a significant change?
I've been debating doing this but wasn't sure how to go about it.
I haven't got it back yet. They just called me and they said that apart from the battery, they need to change another part (the telephone operator didn't know which part) and I'm going to receive it tomorrow.
So I'll let you know once I receive it.
STELIOSFAN said:
Dear all,
Recently my Note is facing a weird problem. While my son is playing a game, the battery drops 20-30% in 10 minutes. If I shut down the tablet and re-power then the battery goes to normal again.
In the battery stats I can see a huge drop during game usage and then up again on reboot.
I performed a factory reset but the same happens....
I flashed the Kit Kat via Odin.... but the same
Any ideas?
Click to expand...
Click to collapse
Did you fix the problem ? I have the same problem and i don't know how to fix it. (i am with 4.3 not rooted).
Rupar4o said:
Did you fix the problem ? I have the same problem and i don't know how to fix it. (i am with 4.3 not rooted).
Click to expand...
Click to collapse
After trying everything (flashing different roms via odin, factory reset, full battery cycles etc) the problem never went away.
Went to Samsung service. They checked the battery and had to replace it.... within the warranty.
Same issue here. Just got an email saying its fixed. They changed the charging port and lcd. Weird that they replaced the lcd.
Well I got it back. Seems they broke the s pen function when taking it out or putting in. The tablet thinks it's always out of its slot. I guess another 2 weeks without this thing. What a pain in the ass. Times like this makes me wish I bought an ipad where I could just walk into the store and get it fixed that day.
I had the same problem. I sent it back on Monday and got it back 7 days later. They did not say what they changed, but now everything is working fine. I even got a new usb cable and a magnetic Germany flag
I sent mine in for an overheating problem and they changed the charging port and gave me a new cable. I initially also had the random drops in battery but seems to be better now.. They said bad voltage going to charging the battery or something. Still have overheating so gotta send it in again?
Sent from my SM-P600 using XDA Premium 4 mobile app
So guys did you get it fixed? I have exactly the same problem. I have sent it to fix at the sam service - they changed the charging port, but it didn't help anything. 1,5 years of normal usage and now I can pretty much throw it into the toilet. God damn POS!
Galaxy Note 10.1 2014 battery drops
Hello all,
Just wanted to inform you all that I have been experiencing these battery drops (yesterday from 93% to a mere 5% in a matter of minutes) for a very long time now. I am running under the latest 4.4.2 stock firmware.
Also, battery life is way below par (understatement !), where the Note sometimes drops to around or below 5% (the magic number below which the screen starts to dim pretty dramatically and there's no way to influence that)
Funny thing is that after the battery drops to below 5% or even 1 or 2%, it's still possible to use the tablet for quite a number of hours afterwards, which suggests it may be something with the logic estimating/determining the remaining battery capacity, rather than the battery itself....)
Now I've tried draining the battery and fully recharging it multiple times/ resetting the stats using free apps / revert to factory settings etc.
All to no avail unfortunately, this problem simply keeps coming back.
(By the way: Apart from the battery and battery life, the Note is an excellent device, and delivers as promised.
Please also note that charging it through the microUSB cable is also simple, stable and relatively fast, unless you compare it of course to my all new Samsung Galaxy Note 4, which has a superior fast charge mode and offers the highest possible battery-life at this moment and easily beats any other smartphone (including the usual suspects from that Cupertino-based firm of which I can't force my mind to remember the name of.....) in this price-quality and performance category )
As for warranty:
Battery is no longer under warranty, the device itself is.
As such, I will now get the battery replaced by a new Samsung OEM-battery first, and see if that resolves the issue.
If it doesn't help, I will send it in for repair for Samsung.
I will keep you all informed on the resolution and cause.
Likewise, if there's anyone that has gotten to the root cause of this issue, please let me / let us know
Some users reported some 'magic part' OTHER than the battery itself (motherboard / charging circuit or even the lcd ??) having been replaced by Samsung after sending it in for repair.
That information could be very valuable to us all in trying to get Samsung to resolve the issue, so I would really appreciate it if someone would share this info in this thread.
Hey I know that there hasn't been much activity on this particular thread, but i too have been experiencing this problem for over a year now. I sent it into samsung twice and it still never fixed the issue and by the time i was going to send it in the 3rd time it was out of warranty. I personally removed the back cover and unplugged the battery for a while and that did not help. I have tried flashing different ROMS and kernels to no avail until last week. I flashed Temasek's Unofficial Build found here http://forum.xda-developers.com/gal...t/lt03wifi-temaseks-unofficial-build-t2980604 and after 3 full power cycles i have not had a single random drop yet i even managed to go 3 days with 6 hours of screen on time which is a record for me with this device. Not sure if it will help everyone but this seems to have solved my problem and i am thrilled! Also (as embarrassing as it is) i played 2.5 hours of Clash of Clans straight without a single random drop either.
I am beginning to have the issue as well on my P605v. Has there been any progress with your battery replacement? @mroset
KwestJones said:
I am beginning to have the issue as well on my P605v. Has there been any progress with your battery replacement? @mroset
Click to expand...
Click to collapse
Hello KwestJones,
I've successfully replaced the battery in the Note 10.1 2014, and it has improved things. With a little care, this is easy to do. Just removing the battery connector is a bit typical, you need to lift it carefully and slightly to remove it.
The result is not as drastic of an improvement as I would like to have seen, but at least the sudden drops in battery capacity percentage seem to be under control now.
I am doing a video test now, and will see how it behaves and let you know.
BR,
Maarten
Very curious to hear if replacing the battery corrected this issue. I've been experiencing this same battery drop issue for 2 or 3 months and the unit is well outside of warranty. Hoping there's a simpler fix, but willing to replace the battery if that will work since the tablet itself is still a great unit.
Complete factory reset should clear the Android Coulometer's data base or learning algorithm. Just clearing options of Battery Monitor Widget for rooted devices won't help. There are some other apps, which seem to help if the charge level never reaches 100%, a related, but not identical problem.
I have an old tablet suffering from this, with a tweaked custom rom, and i didn't want to clear and setup that completely. The algorithm or database is "learning" again, and the capacity jumps have become fewer and smaller over the last months. It should depend on how long the device was used and never reset before the incident. In my case over a year.
Itvs much like my cars fuel calculator, which won't work correctly during traffic light stops. Right after starting the engine, fuel consumption can raise several liters/h, when the car don't drive, as it uses the last sampled value(every 30 meters). And you need several kilometers to drive to have these levels drop to realistic ones again. While after a long driving distance, a traffic light stop will hardly have an influence.
New here and new to Android. I'll try to make this as brief as possible:
Two weeks ago I purchased a used "refurbished" Galaxy Tab S 8.4 with Lollipop installed. I very much wanted to try to make the slow but gradual switch from iOS and thought this would be a good place to start.
Battery life is horrendous compared to iPad. Here is the issue broken down:
Powered on. Battery drains at the rate of 1 percent an hour in standby.
Powered OFF. Battery drains at the rate of 1 percent an hour.
Powered on and using for web, video, etc (no games). Battery drains at the rate of ~10 percent every 15 minutes or so.
What I've done:
Wifi OFF except when in use
Location services OFF
Sync OFF
Bluetooth OFF
Screen at just below 50 percent
Wakelock detector finds some activity (mostly Android battery "WLAN" monitor stuff)
Did full restore
Most importantly: I REPLACED THE BATTERY WITH A BRAND NEW ONE and am seeing nearly identical drains as I did with the stock battery that was two years old
I have scoured the internet, rooted the device to try to kill any rogue activity, and "reseated" the battery connector 3 times.
Can anyone tell me WHY this battery is losing one percent an hour while completely powered off?
One clue is that, with everything turned off (listed above) the battery drain is nearly identical when off as it is when it is "sleeping" which would indicate...well, something.
I'm frustrated that I have been focused on fixing this issue rather than enjoying my "new" Tab S.
Any help would be greatly appreciated.
Thanks!
EDIT: I have read through other batter drain threads here and, although others share similar problems, don't have an answer. Maybe there is no answer?
I had a similar battery drain (when the device was off) 1.5 years ago with my couple of months old tablet. Had to take it to warranty repair twice, on the second attempt they changed the battery connector and the power circuit (if I remember correctly), and that was enough to fix the problem.
If the tablet drains the battery while completely off, it's clearly a hardware issue.
I'm thinking hardware has to be the culprit too, at this point. Very frustrating as this is a used tablet and out of warranty. I have done everything possible to try and get decent battery life out of this thing to no avail. I'm loving android but have a bad taste in my mouth as to their hardware. Should I keep or just get a couple hundred bucks on ebay? I'd be thrilled with this if the battery life came anywhere near the iPad mini.
The 8.4" is known for having a problem with the battery connector (maybe flexing of the case makes it loosen), some people have soldered the battery wires directly to the motherboard and say it fixed the problem, Samsung knows there is a problem with the battery connector according to some service centers, one service center actually fitted a more heavy duty connector to fix one problem according to what i read.
John.
I would contact the seller and try to return it and then get one from a different seller.
~ Assuming you didn't buy from some random ebay seller who has fake rating >.<
Hi,
I've been using this Tab S since July 2014 and been very pleased of it.
I only use it every night for Web browsing or watching movies.
Not any games or any social network or anything draining the battery.
Average autonomy was around 7 to 8 hours.
9 months ago it has started to drain a little bit more and especially when off (totaly off, not in sleep mode)
Before that event I was turning it off at night and 24 hours later the battery level was exactly the same. (zero percent of drift)
Then it started to suck a little bit every day: 1%, 2%, 3% each 24 hours when completly OFF.
First thing I've done was to make a wipe cache/data and restore to factory settings from recovery mode.
It didn't help.
Then Samsung released Lolipop Upgrade so I did it.
It didn't help any more.
So I ordered a new battery to an official dealer and replaced it.
You know the answer.... didn't help.
Then Marshmallow has come and I did it.
.... idem.
So as electronics and automation technician I am, I decided myself to do some measurements.
I opened the Tab S and checked battery voltage when off every hour with a high accuracy Fluke D.M.M.
And I found that it was loosing ~34mV every 24 hours, which makes the 3% loss.
(Boring calculations just for knownledge : LiPo Vmax 4350mV - LiPoVmin 3200mV = 1150mV corresponding to 100% capacity.)
First thing I did after that was to make the same check but with battery disconnected to the Tab S.
And you know what? not even a mV drained in 24 hours when not connected to Tab S PC Board!
Then I measured the resistance between + and - socket on the PC board : value between 800KOhms and 1,2MOhms.
Same values when I crossed the wires.
Theses values are too low, I should have found many many MOhms.
I've also checked the battery connector that some other guys said it was loosy or bad soldered: that's not the case but I've soldered it.
same problem.
MY CONCLUSION: it's a hardware problem.
Maybe it's a drifting component, probably a capacitor which as lost insulation, or a defective diode.
Unfortunately I don't have the diagrams of this Tab S and can't diagnose it.
Is there on XDA any guy from Samsung Tech Support who can help me?
No answer?
Anybody has Galaxy Tab S 8.4 diagrams?
rotobadger said:
I'm thinking hardware has to be the culprit too, at this point. Very frustrating as this is a used tablet and out of warranty. I have done everything possible to try and get decent battery life out of this thing to no avail. I'm loving android but have a bad taste in my mouth as to their hardware. Should I keep or just get a couple hundred bucks on ebay? I'd be thrilled with this if the battery life came anywhere near the iPad mini.
Click to expand...
Click to collapse
i had the same issue Android – Marshmallow Android – Lollipop etc battery life sucks on the upgrades.. The battery would not last more than 3/4 hours, it was a pure joke. Best thing is to downgrade to KitKat XXU1ANF8 since my downgrade battery easily last a few days of heavy use.
---------- Post added at 11:19 AM ---------- Previous post was at 11:16 AM ----------
radioham said:
No answer?
Anybody has Galaxy Tab S 8.4 diagrams?
Click to expand...
Click to collapse
Here try this link for service manual
So about a month ago, I used to get about 40hrs of battery life with a single charge. Also, the overnight drain was about 3-5%. This was great and normal.
Suddenly, it's been a month since my phone drains like crazy. 20-25% overnight drain, and an always steep slope down battery plot. In fact, the plot indicates no flat regions. I'm sure it is not a third party application that's draining my battery, as the issue persists even right after a full factory reset.
I have attached two figures, one for the battery and for from the Naptime application that shows the doze times and supposedly blocks wake-locks. Still, huge drain. These figures are taken 9 hours after a fresh factory reset, with nothing new installed on the phone expect Naptime.
I've looked so many places and tried many different things. Can someone help me understand what's going on? I'm running N950U1EUE3BRA5 firmware if that makes any difference.
ptheguy said:
So about a month ago, I used to get about 40hrs of battery life with a single charge. Also, the overnight drain was about 3-5%. This was great and normal.
Suddenly, it's been a month since my phone drains like crazy. 20-25% overnight drain, and an always steep slope down battery plot. In fact, the plot indicates no flat regions. I'm sure it is not a third party application that's draining my battery, as the issue persists even right after a full factory reset.
I have attached two figures, one for the battery and for from the Naptime application that shows the doze times and supposedly blocks wake-locks. Still, huge drain. These figures are taken 9 hours after a fresh factory reset, with nothing new installed on the phone expect Naptime.
I've looked so many places and tried many different things. Can someone help me understand what's going on? I'm running N950U1EUE3BRA5 firmware if that makes any difference.
Click to expand...
Click to collapse
Well since introduced out tablets have had to do power resets time to time to clear battery data. It's been an ongoing issue since Kit Kat upgrades from JB.
Since your device is 3 years old now, i assume the battery is bad. Very few have their original battery. I suggest checking on ebay, or dispute the transaction in that the item is not as described. Does not hold charge. You should get your money back. PS your 3 year old Note 8.0 should only be $50 at most. I got my new AT &T version new back when for $150 no contract no service, and my wifi variant for the same $150 US shipped about 6 months after release.
gooberdude said:
Since your device is 3 years old now, i assume the battery is bad. Very few have their original battery.
Click to expand...
Click to collapse
I bought my phone last month, it's 1 month old!
Dude, look around before posting. This is the 2nd time i see people posted on wrong device