Database Users

Stop MDA II from charging in cradle

Hi everybody.
To get the most out of my battery I always wait until my device shuts down due to lacking battery. The I chargt it until it the end and the battery displays 6+ houres.
When I recharge the battery before its empty I only get 4+ houres when its full.
I also read that the battery's lifetime is increased by only charging it that way.
My problem is the cradle that charges it everytime I sync.
Is there a way or tool to switch charging on/off for the cradel?
Thanks alot
Alex

The way I understand it, modern batteries do better when charged regularly in small increments. They do very badly with multiple deep discharges, which can actually damage them.
So I would actually disagree with you that what you are doing is a good idea.
If you still decide to do this, the simplest way is probably a manual activesync via bluetooth, using a dongle, as it actually charges via USB too.
Surur

Right the bluetooth thing would be a good idea.
And you might also be right that you should not charge it in such an extreme way...
I read this an a PC Magazin.
I don't know if its wrong or right. the only thing I know is that the battery lasts longer when I charge it thta way.
Thanks
Alex

The battery in the xda2 is designed for constant charging, I dont see how you would get more battery life because if you acheive your desired aim the xda2 will be discharging during sync and will give less battery time than if you let it top up the charge.

I read that Ion battaries have only a limited number of complete chargings bevor the are broken...
alex

HELP!! PHONE WON'T TURN ON

So I upgraded to the latest mr clean rom and did some tweaks with the registry wizard. I was playing around with it for a while and turned it off to charge overnight. I wake up and try and turn it on and nothing. I've tried soft reset, and hard reset and it doesn't turn on or do anything. When I plug in my charger the light on my phone doesn't even come on. PLEASE HELP. WHAT CAN I DO!!!.

This exact same thing happened to me last week. I played with it everday hoping it would turn back on, but nothing worked. Out of nowhere, it powered back up after 7 days of being non-responsive.
So I would just suggest waiting it out and making sure it is fully charged. Sorry I don't have any better solutions, but this is what worked for me.

leave it charging (even if there is no light) for a couple of hourse. then hold the power button for 3 secs. It will work...ciao,V.

Charge it with the charger, not usb, mine did this and I thought it was dead but it's probably just a dead battery. For some reason it can self discharge to the point where the USB charger can't recharge it.

I've done that, had it charging for over 24 hrs now on the home charger. I guess the next step would be a new battery? Do T-mobile stores carry them? TIA

YOU HAVE TO USE THE ORIGINAL 1A CHARGER!!!!! 800mA will not do the job!!!

that's what i've done i think...the home charger... it doesn't say how many A though.

I fixed it , What I did was zap the battery with a 9v battery in 3 sec intervals, I did this about 5 times, then I pluged my phone into the charger and turned it on, the 9v gave it enough juice to boot up and the usb took over from there. So to everyone out there who is having this same problem, try this but don't over zap, check your battery with a multimeter.

my wizard wont turn on this morning. I just tested my battery and it's at 3.1 volts (not 3.7 as stated on the label)
Would your method work do you think ? My mains charger is at my girlfriends house i rely on usb here

Yeah I've had this issue before and I have it again. Last time it self-started after about an hour just sitting on the desk. This time it's taking longer, and is still out. I'm charging it as we speak - no light but I'm hopeful.
So this is a battery fault then? I guess that's a slight relief - I've already sent one in for repair and I can't do it again, as I'm on the far side of the channel..

ive never been backwards in trying these things out so i gave it a go. Slightly different method (a little safer).
Found an old 5v 2A charger lying around bared off the wires and used my meter to identify the positive and ground cores.
tested the battery again.. 3.1volts
applied the wires of the charger to the terminals for 5 secs
tested battery.. 3.25 volts
re applied wires for 5 secs
tested battery.. 3.45 volts
re applied wires for 5 secs
tested battery.. 3.52 volts
put in the wizard.. boot screen.
I think i have a seperate problem as i now have a red flashing light and then it locks up around 20 secs later but im a little further on at least !
cheers,
malty

all sorted here. I hadnt quite enough juice in the battery. Re applied the charger until the battery measured 3.62V Booted ok to the point then that the usb charger took over.
many thanks to the original poster

You saying that giving it brief jolts helps restore the battery? Given the time you applied it for, I can't really think it's being recharged by this action...

its a very temporary thing like a 'kick' and the extra voltage isnt sustained very long. It worked. thats all that matters

Yeah. But I'm reluctant to pump power into an electrical device without knowing why. In my case, the battery is giving a steady 4.2V output, which should be enough, no? In fact, the battery seems to be healthy in every way possible, and a few minutes before it died was reporting a ~80% charge...
I'll try kicking it though

4.2V is over voltage but yea that should be enough. sounds like you may have a more serious problem

Yeah, so do I. Battery was unaffected by a kick, output is still at the rated 4.2V, well above the needed 3.7V.
So, what would make an apparently healthy phone sporadically fail? It wasn't dropped or exposed to anything. I had it, on, on my desk. The screen turned off after 30 seconds, as usual, and then wouldn't turn back on. Soft and hard resets both fail to invoke any response whatsoever. No charging light.
The only thing that's different is that I did an ActiveSync for the first time in weeks, on a new computer, a few hours before it died. For which I'm extremely thankful, as I'd got a lot of data building up without a backup until then. But I'm doubtful that the sync has anything to do with the failure.
These symptoms occured before, a month or so ago, but the phone revived on its own after an hour or so. This one has been out two days now, which worries me.

Hi All,
THANK YOU!! I just bought this 8125 and thought I broke it in only 2 days. The 9 volt battery did the trick.
Now I can get on with trying to use it.

I have had the same problem last week and I used a 9V battery briefly onto the + and - of the phone-battery.
this just gave the phone-battery enough juice to start up and I was able to normally charge the phone again.

Old Trick but !!!Caution!!!
What you guys are doing is reviving a deeply discharged battery.
I frequently do that to normal AA 1.2v NiCd or NiMH Rechargeble battery that have not been used for a long time. When they measure about 0.2v you just jolt a 10v current through it for 1-3 seconds and then carry on charging as normal. If it does not come right, throw it away or use it as a paperweight
Problem comes in with the type of battery you do it with. I had a Lithium - Ion battery explode in my hands once.. (Thank god I wear glasses) I only had a few cuts on my hands and my shirt was ruined so I came off very lucky.
With lithium-Ion batteries one should be very carefull when attemting to boost it when deeply discharged... They dont like it very much.
My 10cents worth

Battery drains way too fast

Ok I am a new member to this whole PocketPC thing since I just purchased my first PocketPC which is an i-mate JASJAM. I honestly think that it's a great product with a lot of features and potential. My problem though, lies in the fact that I haven't had the chance to enjoy it for a full day yet. Ever since I bought it, I always charge it for like 7 to 8 hours, even though it fills up after like 3, but i leave it on charge anyway, because I was told that "that's what you should do!".
Anyways, no matter how long I leave it on the charger, once i take it off the battery begins to drain like there's no tomorrow. I'm talking about going from 100% to 0% within 5 hours, while on FLIGHT MODE. If I turn the screen off then it might last for an extra hour.
Surely this can't be something normal, and I have been beating my brain trying to find a solution. As far as ActiveSync goes, I did the tweak that stops its automatic scheduled syncs, hoping that it would be the problem, but to my disappointment, no luck. Also made sure that no programs were running in the background. It came with a battery with a capacity of 1300mAh and then I bought another one hoping it was a problem with the battery. The new one had a capacity of 1350mAh, not much of a difference but it was all I could find. But there's no difference between them whatsoever, when it comes to battery life.
My first question is whether it is possible that this may be a software issue rather than a hardware issue (such as a power leak)?
If it is, then would upgrading the ROM or Radio or upgrading to WM6 make any difference?
Problem's that I don't have the phone on me right now so I can't give ROM or ExtROM versions etc., but I do know that it is running WM5 with AKU 2.3 and Radio is either 1.21 or 1.31.
N.B.: Until I get this issue sorted out, I am using a Nokia 6680 which has an average battery life of 3 days (72 hours), so should I be expecting something in the vicinity with my i-mate?

Well it sounds as if you've done all the obvious things. There is a power saving registry tweak in the wiki somewhere but that should not be necessary just to bring it to normal power consumption. If I don't use mine much (not on flight mode) I'll get a couple of days at least.
A ROM change might help a little but if you have a warranty I'd be tempted to use it. Radio change is unlikely to change things if you have been testing in flight mode.
Anybody else got ideas?
Mike

The only problem that I have with getting it fixed or replaced under warranty is that I have to send it to another country. So I am trying everything I can do before going through that hassle. So is there any test that I can carry out at home, or a certain diagnostics software that can test the phone for me?
Would a digital multimeter help if i can measure the current being drawn from the battery? What should the current rating be for the phone, is it 1A? Because there is one other interesting thing i found while just snooping around, there is a sticker that just has 5VDC and 1A written on it, and it's stuck to the phone under where the battery goes. I can only imagine that this is the voltage and current rating for the phone. The interesting part is that the battery that came with it, as well as the one i bought are both 3.7V batteries.
:-S

Best to just update your phone.... But becareful! read and research on flashing b 4 you do it... VERY IMPORTANT... USE only softwares for your phone...

I wanna make sure that anything i do doesn't void my warranty as well.

Used their offical update for your phone... However, my friend brick his phone and sent it back to the company and they replace it for him... I dunno if you would have that luck however... if ur careful and read all the information... and ur computer is stable... you shouldnt worry about it bricking ur phone...

jlaham said:
The only problem that I have with getting it fixed or replaced under warranty is that I have to send it to another country. So I am trying everything I can do before going through that hassle. So is there any test that I can carry out at home, or a certain diagnostics software that can test the phone for me?
Would a digital multimeter help if i can measure the current being drawn from the battery? What should the current rating be for the phone, is it 1A? Because there is one other interesting thing i found while just snooping around, there is a sticker that just has 5VDC and 1A written on it, and it's stuck to the phone under where the battery goes. I can only imagine that this is the voltage and current rating for the phone. The interesting part is that the battery that came with it, as well as the one i bought are both 3.7V batteries.
:-S
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The ratings you see written inside and the battery ratings are just standard - nothing unusual there. You could test current draw etc but even if you find it a little high it doesn't really help you to pin down a problem save to say it's the phone and not the battery. However as you have two batteries it's fairly reasonable to say it's not the battery. (reasonable but not impossible of course that two batteries are not working as they should).
Unfortunately we do not yet have our hands on the test file that HTC use.
Mike

I guess I have no choice but to get it shipped back. Thanks for your help guys.

Are you using a wall charger or a trickle-charger such as the USB Cable? The wall charger is the only way to truly charge it to full.
If you are using a USB charger or other trickle charger, after the device says it is fully charged remove it from the charger for about 2 minutes and then reconnect it. It will then charge (most of) the rest of the way.
If you don't do this, the problems gets worse and worse. After 1 day, the trickle charger may get you up to a 90% charge. After two days, 80%, etc. After a week you'll only be holding half a charge, even though the device is reporting a full charge while on the charger.
Another tip I have found is to perform a soft-reset after removing it from the charger, particularly if it has been plugged in for a long time at full charge (more than an hour or so). It seems like the device doesn't always detect that it has been unplugged and tries to suck down juice as if it were still plugged in. If you have noticed that your device gets pretty hot when the battery drains quickly, this is probably what is happening to you.
You also haven't mentioned the programs that you are using during the day. Some programs, particularly chat clients, will drain the battery in about 5 hours, though obviously you're not using anything like this while in flight mode.
One more thing. You noted that you were told that leaving it on the charger whenever possible is the thing to do. This is incorrect. The more the battery is exercised in this way, the shorter the lifespan of the battery will be. With any PocketPC device we're all bound to charge it every night, but once it is charged you want to take it off the charger. A battery being fully charged is just as bad as a battery being fully drained, so you want to keep it somewhere in between as much as possible.

My battery doesn't last either.
I've ordered an extended life battery with its own back.
I've also ordered a car charger.
I also carry my old hiptop with me when I need to switch sims.
Apparently touchscreen phones that do so much, ie. bluetooth and wifi, eat batteries.

Doom Tints said:
Are you using a wall charger or a trickle-charger such as the USB Cable? The wall charger is the only way to truly charge it to full.
If you are using a USB charger or other trickle charger, after the device says it is fully charged remove it from the charger for about 2 minutes and then reconnect it. It will then charge (most of) the rest of the way.
If you don't do this, the problems gets worse and worse. After 1 day, the trickle charger may get you up to a 90% charge. After two days, 80%, etc. After a week you'll only be holding half a charge, even though the device is reporting a full charge while on the charger.
Another tip I have found is to perform a soft-reset after removing it from the charger, particularly if it has been plugged in for a long time at full charge (more than an hour or so). It seems like the device doesn't always detect that it has been unplugged and tries to suck down juice as if it were still plugged in. If you have noticed that your device gets pretty hot when the battery drains quickly, this is probably what is happening to you.
You also haven't mentioned the programs that you are using during the day. Some programs, particularly chat clients, will drain the battery in about 5 hours, though obviously you're not using anything like this while in flight mode.
One more thing. You noted that you were told that leaving it on the charger whenever possible is the thing to do. This is incorrect. The more the battery is exercised in this way, the shorter the lifespan of the battery will be. With any PocketPC device we're all bound to charge it every night, but once it is charged you want to take it off the charger. A battery being fully charged is just as bad as a battery being fully drained, so you want to keep it somewhere in between as much as possible.
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Wow, I am very surprised to hear some of these. First of all, are you sure that using the usb charger kills your battery capacity so fast? I mean, I almost always charge my phone with the usb charger and it seems to be quite fine. Of course once in a while I charge it with the wall charger when I am in a hurry. But I was thinking that charging it with the usb will be better as it charges slowly.
Also I usually keep my phone plugged to the usb. Indeed, I already ordered a desktop cradle so that I can see the screen while it is being charged. Is it a bad idea to keep it cradled all the time? This is what I did with my Dell Axim all the time and it was quite happy with it.

The process of charging/draining modern batteries won't shorten their lifespans. However, having a chargable battery at full charge or at no charge are both bad and both will reduce the lifespan of the battery.
So no, you shouldn't leave it plugged in/cradled all the time.
The problem with trickle chargers is altogether different. They just won't always charge a battery to its full capacity -- so in this way they are actually better for long-term battery health. This is why I said that if you want to get a full charge off of a trickle charger, you have to (usually) take it off the charger and put it back on when the device reports that it is fully charged. After unplugging the trickle-charger you'll get a new battery reading on the device which will usually be anywhere between 60% and 90%. You can then put it back on the charger until it shows full again.

Deleted, invalid, i didnt read the whole post.

Well, it seems that i was just unlucky with my buy. Thanks to all of you first of all for all your support it really did help me learn more about PPC's in general, and it also made me sure that there is a problem with the phone. I sat through what i like to call a debugging session, just following the phone's every "move". I know, sounds kinda crazy but i was just that determined. What i realised was that whether i performed the soft-reset or not, it still had a problem, even though the solution did sound very promising.
This is what happened, charged it to 100%. I also tried charging it a little more later, but that was it, so i'm pretty sure that the capacity was right. After detaching it i performed the softreset, hoping that it would help. Then i just left it over night on flight mode. Next morning it had only decreased to 90%. GREAT! And it felt rather normal, but then about an hour later, it jumped down to 80%, 70%, 60%, then 50%. Then when I held it, it felt pretty hot, i figured that whatever was the problem earlier, just happened again. So I turned it off for a few hours then turned it on again and it started off on 40%. As before seemed to be performing quite normal, then within a minute it heated up again and jumped down to 20%. And that was when i just lost my nerve and packed it to send it back to my retailer.
I am now convinced that the phone is faulty!

Yes, it very well might be.
My device has drained suddenly a few times, with the exact same heat problems that you're describing when it happens. A soft reset for me when this occured fixed it -- and it hasn't happened for months.
But as we all know the same solutions don't work for all people with HTC devices.

I just had the same sort of problem. I've been using my TyTN for several months now under Dutty's WM6, and only just flashed Schaps 3.60 a few days ago.
It worked fine the first couple of days, but now I'm having the dreaded 5hr battery life too.
I had had that a couple of times before, but it was always related to some software, and a soft reset would cure it like Doom Tints said above. The problem is that here, either this or a power-off and reboot doesn't change a thing.
It's clearly a software problem too. I use UpTime Meter from AE, and I can see that the PocketPC simply doesn't turn into standby mode, but only deactivates the screen. In UpTime, the power on time will always be equal to the time since last charge, which means the PocketPC is on all the time. In that case the 5h battery life makes sense.
Would there be a way to find out why it doesn't enter standby mode (which software blocks it up), or force it into it? It would be good to find something as I'm nearly sure this is the reason for most if not all of the cases of short battery life we see around. Without having the meter there's simply no way to realise that the thing just stays on...

Doom Tints said:
The process of charging/draining modern batteries won't shorten their lifespans. However, having a chargable battery at full charge or at no charge are both bad and both will reduce the lifespan of the battery.
So no, you shouldn't leave it plugged in/cradled all the time.
The problem with trickle chargers is altogether different. They just won't always charge a battery to its full capacity -- so in this way they are actually better for long-term battery health. This is why I said that if you want to get a full charge off of a trickle charger, you have to (usually) take it off the charger and put it back on when the device reports that it is fully charged. After unplugging the trickle-charger you'll get a new battery reading on the device which will usually be anywhere between 60% and 90%. You can then put it back on the charger until it shows full again.
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Your good man, Phone has been charging for about four hours and it didnt go up more than 40% so I unpluged the phone and turned it off and on and then it went up to 80% and now its recharging it again. Thanks

Battery discharge and heating up
kilrah said:
I just had the same sort of problem. I've been using my TyTN for several months now under Dutty's WM6, and only just flashed Schaps 3.60 a few days ago.
...
Would there be a way to find out why it doesn't enter standby mode (which software blocks it up), or force it into it? It would be good to find something as I'm nearly sure this is the reason for most if not all of the cases of short battery life we see around. Without having the meter there's simply no way to realise that the thing just stays on...
Click to expand...
Click to collapse
Since I had my hermes, a few times it would get very hot and discharge the battery, and I assumed I was turning it on in my pocket and running a program. But now it does this continually. As soon as I take it off the charger it discharges and gets hot. This even happens if the phone is powered off.
I have borrowed a battery of someone else and the same thing happens
I have also hard reset it and have nothing installed extra, so it can not be software problem.
Must be a short circuit inside the phone? Does anyone have any ideas? I can't send it back as it is a Cingular and I live in the UK and have no support contract.
Thanks,
Mark

I managed to investigate and find the culprit - A2DP Toggle in my case. Whenever its Today plugin is enabled, it will prevent the phone from entering standby. Deactivate it - no uninstallation needed - and it returns to normal. Weird as it had been working perfectly for about a week, and I haven't done any change when it started acting weird.
Now it kinda defeats the plugin's purpose if I have to deactivate it everytime...
@simkin: If it drains the battery even powered off completely that's most likely a hardware problem. Does it happen too if you remove the battery and put it again without turning the phone on (as opposed to having the phone on and turning it off with a long press on the the power button)?
There could be a slight chance that the phone actually starts booting and gets stuck there draining power. As a last solution I'd try flashing it with a different ROM, but if that fails it's most likely a hardware fault.

I'm having battery trouble too, I switched to WM6 with a full battery that lasted for about 24 hours and it became 7-8 hours, so I switched back to my previous ROM and Radio ver and it still says I only get 7-8 hours average, I'm gonna try to hard reset it on more time, and then i'm just gonna try a new battery.

Extended Battery Problems

I received an extended battery which I ordered from ebay and i am having problems with it. The stated capacity (of 2300mah) is true however i have to remove and re insert the battery to be able to use it. E.g. I charge the phone fully and use it until it shuts down, i then remove and re-insert the battery and i still have over 50% left. If i have 80% left and i remove and re-insert the battery it will jump back to 100%. I have tried fully recharging and discharging the battery. I have also tried changing to the latest official rom for my provider which lists extended battery support as one of its features. I have seen comments in some of the extended battery threads with people having similar issues however there are no solutions mentioned in them. Does anybody have any ideas on how to fix this?

Something you will have to live with. HTC fix works with their official batteries AFAIK.

I opened up the battery and i found it is actually 2 batteries stuck together. So im pretty much out of luck for a software fix. I guess this will just become my spare battery.
(images taken by hd2)

PINki92 said:
Something you will have to live with. HTC fix works with their official batteries AFAIK.
Click to expand...
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Where is the fix ?
Can you give a link ?

http://www.expansys.ae/allreviews.aspx?i=195058
Read this short review/opinion.

JJbdoggg said:
I opened up the battery and i found it is actually 2 batteries stuck together. So im pretty much out of luck for a software fix. I guess this will just become my spare battery.
(images taken by hd2)
Click to expand...
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[technical head on]
That's what a battery is; more than one cell.
Wire identical cells together in a row and you combine the voltage but not the capacity.
Wire the identical cells together in parallel (ie + to + and - to -) and you combine the capacity but not the voltage.
So take two 1200mAh lithium cells and wire them in parallel and you get a 2400mAh battery.
The original ROMs were designed with a 1200mAh cell in mind, so their power meters presume that's what you have. If you take out the battery and plug it back in, it resets the power meter. Both cells are being used at the same time, don't think it uses one then flips over to the other.
Try a newer ROM and see if that sorts you out.

Reseating the battery did wonder for my battery life and charging issues on my 8.4

As many other of you, I have had problems with my battery charging properly. Often it would only charge up to 40-60%. Usually, I could fix this problem by running my battery down to 2%, then turning it off and plugging in the charger. Most of the time it would charge up to 100% then, save for a few times it didn't.
Still, I was getting annoyed by this, so I figured I might as well try pulling the battery out and plugging it back in. And, wow, did it fix some issues for me. So far, my battery is charging itself back to 100% without having the pull the plug multiple times. But maybe even better, it gave me a completely renewed battery life.
Before reseating the battery, I was getting about 5-7.5 hours battery life depending on what I was doing. After reseating, I now have about 10.5 hours of battery life. That's a HUGE difference. The attached images below show my latest 10.5 hour battery life with about 9% left, which should give me another 45 minutes to an hour if I needed it. Power saving was on during the entire time, screen brightness varied between 10-25%. Mostly I internetted, reddited, used Feedly, 1.5 hour of youtube viewing. I put the tablet in airplane mode for one night to see if it gave any significant battery life, but it only took about 1% during the night it wasn't in airplane mode. Sync with all my accounts was also on the entire time. Android version is stock, rooted, though I only use Xposed and Greenify.
If it stays like this, this will be the first time I am truely happy with my battery life.
To reseat the battery, I used this Youtube video:
www.youtube.com/watch?v=lEVFYQksmxM
If you want to try it, which I certainly recommend, you can try pulling out only the battery cable. I wasn't able to, I didn't want to put too much stress on the cabling, so I unscrewed the entire battery. It's not stuck with adhesive anyway. I do however recommend strongly that you use this guide to pull of the back cover, instead of opening at the screen:
www.youtube.com/watch?v=f5vTAeWyq7I
Can't link to the video's themselves, I am not allowed to do that yet. I believe this video was made by someone on XDA? Please give a shout out, so I can give you proper credits for it. Becareful when opening the device when near the USB port and the audio jack. The plastic connecting to the tablet itself seems very fragile in those places.

Thanks for sharing.

Same experience, I did it two days ago after noticing that it stopped charging at 96%. With the same usage I should have needed to recharge it by now but I still have 52% battery left with my usual 3 hours of screen on over 48 hours. So it doubled the battery life .
I did remove only the connector, I used a plastic coated paper clip that I passed under the cables to pop it off. The cables are strongly attached enough to remove the connector without any issue.
I think I'll keep this tablet longer than I thought, the processor and screen being future-proof.

I'll try it and post my results...
Anybody else tried that or has a clue why that happened?

reseating battery helped, now won't charge from USB
I too have been frustrated with charging and battery issues on my Tab Pro 8.4. So I tried the battery reseating trick.
I can now report, that it has helped with battery life. But a new issue came up.
Previously, I could not reliable charge the tablet on AC power ( USB cable connected to the AC charger ). It would not charge to 100%. The solution was to charge from an USB port on my Mac. This would charge to 100%.
After the battery reseat trick, the tablet does not charge over USB, but charges nicely to 100% on AC. And the battery life is much better.
Right now, I am trying if the battery is even charging over USB while off. The little dots are scrolling on the screen, seems something thinks the charging is ongoing, but I need more time to see if the charge level has moved up.
Any ideas ? Thanks, Paul.

I had also proceed to that "surgery". Battery life seems better but it could be placebo. Im not sure.
But 3 times in a row charging went from 15, 20, 35 % straight to 100.
To the usb charging issue mentioned, due to the bad contactivity of the battery cable before tha fix, it may displayed false reading of charging level. The normal changing time from a standard usb port is at least 4 to 5 times longer than the original charger (2000mA vs 500mA max). So you have to wait longer for a usb charging level change.

About the USB charging issue - the device does charge when off, while plugged into an USB port on a Mac. When the device is ON, the battery icon shows a red cross, and the info in the Battery windows of settings is showing Not Charging. My guess is that this is some restriction on the firmware, that does not attempt to charge the device while having a data link on the USB. I will try to obtain a charging-only cable, to see if that fixes the issue.
Paul.

Just checked for myself, but my cable that came with the tablet doesn't work either. Tried it with different cables too and the same red icon pops up in the battery. I honestly never tried charging it myself via my PC before I reseated the battery. Maybe it has something to do with the fact a PC USB 2.0 port can only supply 500mAh, which isn't enough for the tablet (while it is turned on)?

I m also suffering from this charging problem...i wish to reseat bt i have a question...after opening the back cover does it reinsert normally or i need glue..?

I tried first to remove the back cover. Some of the clips chipped off. So I removed the screen. No damage removing the screen. Just be patient to unclip all spots all around the screen

kensheen said:
I m also suffering from this charging problem...i wish to reseat bt i have a question...after opening the back cover does it reinsert normally or i need glue..?
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There is some adhesive between the cover and the tablet itself, but mostly there are a lot of small plastic pins that lock in place. I did not add any new adhesive, and I honestly can't tell the difference.
paokaras45 said:
I tried first to remove the back cover. Some of the clips chipped off. So I removed the screen. No damage removing the screen. Just be patient to unclip all spots all around the screen
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Oh that doesn't sound good. Is the back cover still fine now with the chipped pins? I personally didn't try via the screen since I saw an image in a different thread of someone getting bubbles of some kind in one of his screen corners.

The fit close to the ir port is not as tight as before. I don't mind because i use a case. The screen came off without any issues.
PS: after power on the tablet for the first time, i forgot to set time and date. It didnt connect to any secure site or servive (play store, youtube, facebook). So keep in mind to set them correctly

paokaras45 said:
The fit close to the ir port is not as tight as before. I don't mind because i use a case. The screen came off without any issues.
PS: after power on the tablet for the first time, i forgot to set time and date. It didnt connect to any secure site or servive (play store, youtube, facebook). So keep in mind to set them correctly
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So, after some days, how do you note the battery? Improved indeed?

favero_ said:
So, after some days, how do you note the battery? Improved indeed?
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I think yes. I now get full charge every time (5 times from various percentages) and screen on time increased by an hour approximately. Maybe its from the better changing cycles.
With medium usage (tapatalk 20%, greader 30%, facebook 20%, youtube 30%) no gaming at all i get about 6 or more s.o.t. at 20% brightness most of the time.
Right now i am at 30% left with 5 hours sot, unpluged 13 hours ago.

I reseated my battery..now my tab pro showed it is full charged after long time. Previously it didnt cross 29% even i charge it for whole day..battery is better now. I opened the back cover by ruler and reseated only the battery connection as shown by video...
thankx sicron.

are you guys sure there is nothing wrong with your charger, you should get a usb amp reader (like $5 on ebay) and make sure the tablet is pulling 1800~ mA when it charges from 50% or less (rate will drop when it gets close to full)
Also always use the Samsung cable that came with the tablet since it has high quality Copper wires that can carry the correct 2A current , if you use another cable it is most-likely only rated for 500 mA (Computer USB current) and will either
1. Not carry enough current to properly charge the tablet.
2. start charging ok but as the cable heats up (or contact pins on the usb parts) it will start to degrade
I suggest only using the Samsung wall charger, and never Ipad , iphone, computer or other brand chargers to charge it.

otyg said:
are you guys sure there is nothing wrong with your charger, you should get a usb amp reader (like $5 on ebay) and make sure the tablet is pulling 1800~ mA when it charges from 50% or less (rate will drop when it gets close to full)
Also always use the Samsung cable that came with the tablet since it has high quality Copper wires that can carry the correct 2A current , if you use another cable it is most-likely only rated for 500 mA (Computer USB current) and will either
1. Not carry enough current to properly charge the tablet.
2. start charging ok but as the cable heats up (or contact pins on the usb parts) it will start to degrade
I suggest only using the Samsung wall charger, and never Ipad , iphone, computer or other brand chargers to charge it.
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It is definitely not the charger, otherwise the problem wouldn't be fixed by reseating the battery. Which happens to work for a lot of people. I personally tried a Nexus 7 2012 2A charger both with the original cable and with my Samsung cable. I also tried the OnePlus One charger (2A or 2.1A, not sure) with both cables and it didn't charge. It seems to me it is some kind of calibration issue, that somehow gets fixed by unplugging the battery and plugging it in again.

Sicron said:
It is definitely not the charger, otherwise the problem wouldn't be fixed by reseating the battery. Which happens to work for a lot of people. I personally tried a Nexus 7 2012 2A charger both with the original cable and with my Samsung cable. I also tried the OnePlus One charger (2A or 2.1A, not sure) with both cables and it didn't charge. It seems to me it is some kind of calibration issue, that somehow gets fixed by unplugging the battery and plugging it in again.
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Yeah strange, maybe some-kind of a bad connection on the battery clip where on the assembly line it didn't get fully pressed down or just comes loose overtime, and maybe the battery wasn't reporting back stats correctly (if you look in logcat you can see it constantly is getting updates from the battery circuitry)
would be interesting to see what logcat reports on a device with this problem (might need root logcat)
IE mine shows this.
D/BatteryService( 944): level:61, scale:100, status:3, health:2, present:true, voltage: 3836, temperature: 248, technology: Li-ion, AC powered:false, USB powered:false, Wireless powered:false, icon:17303447, invalid charger:0, online:1, current avg:-784, charge type:0, power sharing:false
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I completed the battery reseating and can say it definitely has improved the battery charging and performance. Prior to I was having the charging stopping issue at various percentages. Since the reseating it now charges 100% and the battery performance has definitely increased by at least 20%. Would recommend to do this if your having battery issues. Take off the back cover as it is very easy. Just need to go slow around the perimeter. It is help on by small clips and glue. Use a slow and forceful prying with a credit card and the back cover will slowly become undone. Area around the charging port has a little extra glue so may take a little more force.