Hello to you all,
My new XDA Exec has developed a fault. It works OK when plugged in to the USB on my laptop or charger but when running on battery will only do so for a short time. In fact a matter of a few minutes.
The battery indicator shows the battery at 100% when charged but the phone turns off variously at 95 - 98%. I tried a soft reset and not change.
I tried discharging the battery using small lamp then recharging in the phone. The battery indicator did show a lower %age 80 ish but not as low as I would have thought. Subsequent charging made no difference and the problem persists. Has anyone seen this before? Any bright suggestions?
Many thanks to you all for you time.
Cheers
Piran
Piran Bassett said:
Hello to you all,
My new XDA Exec has developed a fault. It works OK when plugged in to the USB on my laptop or charger but when running on battery will only do so for a short time. In fact a matter of a few minutes.
The battery indicator shows the battery at 100% when charged but the phone turns off variously at 95 - 98%. I tried a soft reset and not change.
I tried discharging the battery using small lamp then recharging in the phone. The battery indicator did show a lower %age 80 ish but not as low as I would have thought. Subsequent charging made no difference and the problem persists. Has anyone seen this before? Any bright suggestions?
Many thanks to you all for you time.
Cheers
Piran
Click to expand...
Click to collapse
You battery is dead therefore you would need to change. You are not unique with this problem. That is common issue for Universal (exec) batteries. For your new battery: dont charge with the USB cable and charge when is completely drained.
Hi Bulldog,
thanks for the reply and the info. Regarding charging the unit from the USB port. Does the unit not begin charging as soon as it's plugged in to a USB port? Is there a way to prevent this that you know of? My phone was normally charged for about half it's life from the charger, half from USB.
From what I understand the LI ion batteries don't have a charge memory due to milisecond pulse charging so pardon me for asking but what does the total discharge do for the battery? Obviously it does something but what? (Not doubting you but I'm curious). Is there a away to ressurect a defective battery such as the one I have currently or is it a lost cause. I know some batteries can improve with either heating or cooling by about 20 - 40°C from normal operating temeprature, have you any experience with this?
Do you know if some makes of batteries are better than others?
Please pardon the inquisition but as I spend a lot of time in remote areas it's often quite handy to be able to bodge rig stuff in order to effect a temporary fix and it seems any bits of knowledge help!
Once again many thanks
Piran
Piran Bassett said:
Hi Bulldog,
thanks for the reply and the info. Regarding charging the unit from the USB port. Does the unit not begin charging as soon as it's plugged in to a USB port? Is there a way to prevent this that you know of? My phone was normally charged for about half it's life from the charger, half from USB.
From what I understand the LI ion batteries don't have a charge memory due to milisecond pulse charging so pardon me for asking but what does the total discharge do for the battery? Obviously it does something but what? (Not doubting you but I'm curious). Is there a away to ressurect a defective battery such as the one I have currently or is it a lost cause. I know some batteries can improve with either heating or cooling by about 20 - 40°C from normal operating temeprature, have you any experience with this?
Do you know if some makes of batteries are better than others?
Please pardon the inquisition but as I spend a lot of time in remote areas it's often quite handy to be able to bodge rig stuff in order to effect a temporary fix and it seems any bits of knowledge help!
Once again many thanks
Piran
Click to expand...
Click to collapse
Hi, I have the exact same problem...works fine when usb or mains connected but only for a few minutes when on the battery. Usually when I give it some heavy task stuff it will suddenly just blank out the acreen and die.
I'm going to try and do what's suggested on the wiki page about masking off the charge indicator contact with tape - run the thing down and charge up again.
otherwise it's a new battery - not expensive - and plenty about on ebay.
fanger
Hi Piran,
Be Frank I am not battery specialist. Therefore I cant give a deep explanation what makes the Universal Battery having so many problems with USB charging. For my understanding it is the slow charge which leads to Battery overheat. Therefore All the post here regarding the Battery problems suggest not keeping the universal charged with USB. Just search for Post for "battery problems" and you will find few "explanations"
In Regards whether you could reverse your battery issue. From my previous experience I would say the max the you can get back is some 10-15%. However in your case the issue seams more severe as you device turns off by 90-100% therefore I think you would need to order new Battery.
following procedure I follow to drain my battery:
1) Turn off You Phone Radio (important)
2) disable the "Turn off Backlight" and put your device brightness to "full"
3) let your device drain the battery by him self( prevent doing anything with your device during this time. I found starting application, touching screen etc. leads that the device request a pick of power which the battery is not able to provide and turns the device off.
4) after certain time your battery will be to weak to keep the device on.
5) push the "power button + backlight button + reset pin" to put your device in to bootloader mode. (your screen will be almost off just some info like SERIAL or Bootloader Version will be visible)
6) again keep the device in this mode to drain as much you can until you cant see anything on the screen.
7) repeat this point6 few times as sometimes the device turns of but after trying again the button combination you can put it back to bootloader.
With above the aim is to drain the battery much as possible. After that you charge your device with power connection for min.12 hours. I guess you will gain few % however repeat the draining and charging procedure for next couple charging cycle to see how much max you will get back.
Good Luck.
I faced the same problem with my battery on Universal.
After a complete drain, the battery wont recharge:
1) Connecting the power cord it starts the boot process, after few seconds the power led ligths in red once, the screen blanks and the boot restarts again and again.
2) Using the usb cord the power led flashes in red without further actions.
I have to throw away the battery, I guess.
Thanks for any comment.
Cesare said:
I faced the same problem with my battery on Universal.
After a complete drain, the battery wont recharge:
1) Connecting the power cord it starts the boot process, after few seconds the power led ligths in red once, the screen blanks and the boot restarts again and again.
2) Using the usb cord the power led flashes in red without further actions.
I have to throw away the battery, I guess.
Thanks for any comment.
Click to expand...
Click to collapse
Cesare, One thing you could try before given up on your battery. Try to Use your power connection to charge for while before starting up your device.
How much is a new battery?
Bulldog said:
Cesare, One thing you could try before given up on your battery. Try to Use your power connection to charge for while before starting up your device.
Click to expand...
Click to collapse
Bulldog, many thanks for your replay.
When I connect the power cord the start up begins automatically.
There is a way to avoid the starting up?
Cesare said:
Bulldog, many thanks for your replay.
When I connect the power cord the start up begins automatically.
There is a way to avoid the starting up?
Click to expand...
Click to collapse
Cesare, you right when you plug in the device it will boot up. However after while (ca.10-15) when the first initialization complete you could go and switch off the screen(with power button) which takes allot power. Anyhow in your case it is really strange as your device behaves like it has no battery at all. there could be 2 things leading to that.
1) your battery is completely dead ( check with a voltmeter to confirm)
2) or something wrong with your Connection clips (battery and device) you could again check with a voltmeter whether you get any juice on those clips.
Bulldog said:
Cesare, you right when you plug in the device it will boot up. However after while (ca.10-15) when the first initialization complete you could go and switch off the screen(with power button) which takes allot power. Anyhow in your case it is really strange as your device behaves like it has no battery at all. there could be 2 things leading to that.
1) your battery is completely dead ( check with a voltmeter to confirm)
2) or something wrong with your Connection clips (battery and device) you could again check with a voltmeter whether you get any juice on those clips.
Click to expand...
Click to collapse
Hi Bulldog.
I think that the 1st one is the rigth hypothesis. I'll check with a voltmeter.
The connection clips are ok because the backup battery works perfectly.
To drain that battery I connected an optical usb mouse until the mouse ligth went off. Do you think that this action is the reason of the death?
Many thanks again
Cesare said:
Hi Bulldog.
I think that the 1st one is the rigth hypothesis. I'll check with a voltmeter.
The connection clips are ok because the backup battery works perfectly.
To drain that battery I connected an optical usb mouse until the mouse ligth went off. Do you think that this action is the reason of the death?
Many thanks again
Click to expand...
Click to collapse
Cesare, your battery my not complete dead but it is to weak to lighten up your Universal. Said that leads to bad thing which is: you can only start to charge battery when the universal has come out of bootloader mode.
I had such case ones, after not using my device for very long time the battery was completely drained, And as you described the device keep booting after plugging to the power. However after certain time ( I think some 15-30min trying) suddenly I was able to start up. I am not sure whether that would help to overcome the booting mode with less power but you could try to take out your sim card and memory card and try booting. ( again not sure it will help)
Guys - a quick update from my previous post.
I was suffering a sudden power outage at about 75%-85% battery power - just a blank screen - power gone. Didn't happen when mains connected, only on battery.
Well, first things first, I thought...dodgy ROM for WM 6 - so I tried a few of them - Ivans, Ranju's and Beastys - no change - still this power out.
Read the posts on this forum and thought - gotta be the battery's fried.
Sooo,
I ordered a new Genuine JasJar battery and installed it - (let it charge for 8 hours) - since then...no problems - no crashes, stalls or blank outs.
I'm running Ranju's 7.4 with spb pocket plus - htc home, etc,
As a point of interest my old battery stated 3.9Volts when I put my meter across it BUT - a voltmeter isn't drawing as much as the universal - when 'under load' from power intensive apps - hence you think you've got a battery putting out the requisite power when you haven't.
This was a real niggly problem to sort out with potential culprits all over the place:
Bad battery?
Bad ROM?
PCB crack?
Hardware Fault?
At the end of the day it's good to have spent £32 or so and simply got rid of the problem totally.
I'd say to anyone who's getting outs or blank outs at 80% power or below - your battery stuffed and no amount of mucking about with ROM swaps, Freezers, charging/ discharging is going to stop it blanking out on you.
I'd also like to say how appreciative I am of this forum with a great deal of knowledge available from so many users across a very broad spectrum of skills and experience. Nice one!
Hope this helps,
fanger
Related
Hello,
I've a Wizard that is approximately 20 months old. Yesterday, before I went to bed, I set the alarm clock on the Wizard, put it next to bed and went to sleep.
This morning upon waking up I tried to switch on the Wizard but it couldn't. Firstly, I thought the battery was discharged, so I tried charging through USB on my computer -- it wouldn't charge or start. Then, I tried charging on the default charger -- again nothing.
I tried removing battery and soft reset - nothing. It's really weird, yesterday I left it working, no-one has touched it and today it's totally non-responsive.
Any ideas what might be wrong/how can I bring it back to life? Would a hard-reset help?
Regards,
1. how much charge was in the battery last night?
2. is your battery 20 months old also?
3. do you have a spare battery to try?
4. do you have many applications, music etc. on the device?
1. how much charge was in the battery last night?
Click to expand...
Click to collapse
Unfortunately I can't remember, however I have an alarm which sounds periodically when the battery is below 20%, so I'm guessing I had at least 20 percent. Could be wrong, of course, but most likely above 20%.
2. is your battery 20 months old also?
Click to expand...
Click to collapse
Yes, this is the original battery. Aprx. 20 months old.
3. do you have a spare battery to try?
Click to expand...
Click to collapse
I don't have that. I guess I could go to mobile phone service shack and check there. Do you think it's the battery?
4. do you have many applications, music etc. on the device?
Click to expand...
Click to collapse
The Wizard came with a 64MB card I think. I had around 10MB free space. 3-4 applications, 2-3 mp3s. Nothing unusual.
Same thing (sort of) happened to mine after about 187 months. I was using mine and it hung up. I hit the reset button and that was the end of that. Even when plugged in it does nothing. Tried a hard reset... nothing. Soft reset.... nothing. Dead. Zip. Nadda.
Good news? Replaced it with a Kaiser!
vivanov said:
Hello,
I've a Wizard that is approximately 20 months old. Yesterday, before I went to bed, I set the alarm clock on the Wizard, put it next to bed and went to sleep.
This morning upon waking up I tried to switch on the Wizard but it couldn't. Firstly, I thought the battery was discharged, so I tried charging through USB on my computer -- it wouldn't charge or start. Then, I tried charging on the default charger -- again nothing.
I tried removing battery and soft reset - nothing. It's really weird, yesterday I left it working, no-one has touched it and today it's totally non-responsive.
Any ideas what might be wrong/how can I bring it back to life? Would a hard-reset help?
Regards,
Click to expand...
Click to collapse
Mine died too when i was flashing...
Leave the phone in the original charger for a while and see if it picks up...sometimes it comes back to life by doing that...
If that doesnt work, try a new battery, you might be lucky...
A somewhat strange development occurred today:
Today (3 days after it stopping working) I randomly tried to switch the Wizard on and it indeed switched on. It showed that it had 0% battery. It didn't even show 0%, basically the battery charge graph was empty - no number, no fill, nothing.
While it was on charge the charge light was on (while it was 'broken' the charge light was off when I tried to charge). So I left it to charge and when I checked back in 15 minutes it was back to being 'dead'. Can't be started, no charge light, nada.
I don't really know what's going on, however I'm highly suspicious of the battery. Currently, I'm periodically trying to switch it on again so I can backup my data.
Any ideas what might be wrong with it, do you think it's the battery or is it more serious?
Regards,
The battery won't charge if it gets to low.
There is a thread about using a 9V battery to get the battery up to a level so it will charge. I don't have the link for it, try searching for it or maybe someone else will reply.
You might have a bad battery. I bought a new battery because I didn't think I was getting the life that I should. I tried using the old battery about a month after when I had to run out and my main was low. About 15 minuets later my phone started shutting of and rebooting. That was the end of that battery.
Yep, it's possible. If the battery is to empty, you can't charge the phone. It is stupid but it's just like that. You also can't power on the phone without a battery with the charger connected.
Yesterday I received my wizard and I had to revive my battery too because it was completely empty. I used a self made 5V power supply and after 2 minutes charging I placed the battery in the wizard and was able to charge and boot with the charger connected.
Here's the 9v battery trick, connect the + from the 9v battery to the + of the phones battery and the - to the -, hold there for only 10 seconds then remove the connection for 10 seconds and then repeat the process about 8 to 10 times and then put the battery back in the phone and connect it to the wall charger to fully charge.
Thanks for the advice. I'm going to do the jump-start thing.
However, I've hard time determining which is the - and which is the + pin layout on the battery, since the label is not correctly applied.
As far as I can see the - is the one at the far right, however I'm not sure which is the + pin.
Can someone help me with this, please?
Regards,
vivanov said:
Thanks for the advice. I'm going to do the jump-start thing.
However, I've hard time determining which is the - and which is the + pin layout on the battery, since the label is not correctly applied.
As far as I can see the - is the one at the far right, however I'm not sure which is the + pin.
Can someone help me with this, please?
Regards,
Click to expand...
Click to collapse
When you take out the battery and put it back in that direction ,turn and face up the connector side fasing you,the first connector from the rightside of the battery is the ' + ' and the last is ' - ' towards the leftside.Be careful while connecting and try not to touch other connectors. Don't keep the connections longer then 10 seconds interval.
good luck
Xeno1,
My MDA battery also died and went below re-chargeable state. Your trick to use 9volt battery to jump-start it worked just fine for me. I connnected for about 20 seconds (2x times) and plugged it back into phone and connected USB cable to it and my nice yellow charging light came back on. After about 30 mins, I could use the phone.
THANKS FOR THE GREAT TIP!!!
easier fix, take a standard usb cable. rip off the smaller end with a wire cutter, expose the red and black wire. take out your battery, than connect the negative(black) wire to the negative end of the battery, than the red wire to the positive end of the battery, leave it in there for exactly 3-5 minutes for jump start. after that turn your wizard on, and quickly shove it inside a new usb cable. or the wall charger.
note:
if not done correctly, you may damage your wizard or the battery. if theres a power overload or your power goes out. your wizard will burn out!
feedback is greatly appreciated.
p.s after that my battery seem to be weak, charge barely holds for 12 hours. after 12-14 hours it will die out. so i suggest buying a new battery after couple of days.
Thanks guys! Vario died yesterday and wouldn't turn on or charge.
Tried the 9v battery recommended here and it worked! I was a little unsure which end was - and which was + but using the advise above, got it right. Wasn't too worried as found and ordered a replacement from ebay this morning for £7.
The first connector on the right hand side, nearest the end of the battery is the + the one more towards the middle and further away from its corresponding end is -, or at least, thats what worked for me.
Thanks again!
Experiencing the same issues after I set aside my Mini S as it was experiencing problems with regards to its screen alignment. Wasn't able to charge it during that time I kept in the drawer unused - due to frustration as I can't use it anymore. After downloading a guide to disassmble it so I could remedy the problem I found out that it won't power up anymore even with a new battery.
Well, haven't tried the jumpstart thing and the original battery was disposed of already to try the jumpstart idea. Could it be the internal battery is causing the problems? I opened my unit up and tested the internal battery for power and it registers a measly .2V left. Will use the 9V thing to power it up (as been doing that before on watch batteries that are hard to find replacements) before I do it on the main battery. Here's hoping it works as the Mini S has been quite useful for me until now.
UPDATE: I charged the internal battery and it now reads 1+ V and the external battery at 3+ V. No luck yet though as the unit still won't show any life. Any suggestions?
Vivanov, I know it's been a few years now, but did you end up fixing your problem? If so, how?
I started this thread because I lost lots of time to find the answer to my problem scattered over many, many threads. I hope this posting can save a lot of time for others.
The problem
The HTC Universal suffers from the problem that the device turns off while the battery indicator still shows juice left.
The cause
It's the battery or the way how the device interacts with the battery. It can have something to do with ROM upgrading while the battery is not at 100%.
Solution 1: Buy new battery
A lot of people will immediately tell you to buy another battery. That's a solution. Batteries are not that expensive anymore. See Ebay for example.
Solution 2: Recalibrate the battery
For me it wasn't a solution (it was a new device with a brand new battery! And yes, I upgraded to WM6 immediately after purchase)
Source: the greatest part of the solution for me was provided here by Jwrightmcps.
1. Charge the battery overnight with the supplied poweradapter, not with the USB cable, then:
2. Drain the battery without SD-card, powersaving off and backlight on full, then:
3. At some level, the device will turn off. Switch it on and go to the bootloader by backlight+power+reset button and drain the battery until it's really empty, then:
4. Charge the battery again with the supplied poweradapter
*** WARNING AT YOUR OWN RISK ***
You can also try to put your battery in the freezer overnight (wrap it in plastic) to drain it, as I once did with a laptop battery. Let it get back to room temperature before you insert it back into your device.
*** WARNING AT YOUR OWN RISK ***
Prevention
Always drain your battery before you charge it.
Charge the battery with the power adapter not with the USB cable or car adapter
My story
I bought the device new in store and charged it in the car when driving home (one hour). After that I hooked up the device to my PC and upgraded to WM6. In the evening, when the battery was arround 40% it shut down... Never got a battery low warning.
(please make this sticky)
Effects of Bootloader mode?
A simple (silly?) question: if I enter Bootloader Mode do I loose all my data? Can I enter bootloader mode and just restart with no more effects than a soft reset?
When to exit bootloader-mode (i.e. reboot the device normally)? Before charging (before step #4) or after it is fully charged (after step #4)?
Cheers,
-mARKUS
Well I don't want to invest in my universal as i'm changing it to another one, so I'd better fix my battery. I tried to do like this:
- discharge battery to 40% (device shut down)
- connected the + and - to a battery-powered speaker system and played music some time. This could discharge it more, what do you think about it? Well I can't say from my experience because I must wait for my device to discharge now
mbirth said:
When to exit bootloader-mode (i.e. reboot the device normally)? Before charging (before step #4) or after it is fully charged (after step #4)?
Click to expand...
Click to collapse
The bootloader mode is used in this example to drain the battery. The bootloader is 'exited' when the battery is empty...
Draining the battery in the bootloader mode will take long, because backlight is not enabled.
bdm333 said:
A simple (silly?) question: if I enter Bootloader Mode do I loose all my data? Can I enter bootloader mode and just restart with no more effects than a soft reset?
Click to expand...
Click to collapse
No, you don't will loose your date.
Yes, you can enter the bootloader and restart with no more effects than a soft reset.
kartam said:
Well I don't want to invest in my universal as i'm changing it to another one, so I'd better fix my battery. I tried to do like this:
- discharge battery to 40% (device shut down)
- connected the + and - to a battery-powered speaker system and played music some time. This could discharge it more, what do you think about it? Well I can't say from my experience because I must wait for my device to discharge now
Click to expand...
Click to collapse
That is also a nice way to drain the battery. Be carefull that you don't shortcircuit the battery.
doesn't work for me, seem it is a software wm6 reason, so probably there is one solution:
ROLLBACK TO WM5
maybe try to change another part of rom? update bootloader? i don't know... i prefer wm6 over wm5 but this gives me no choice...
Added to the wiki: http://wiki.xda-developers.com/index.php?pagename=UniversalBatteryIssue
(with full credits to user888 and JWright, of course)
when i had this problem, i just bought a fat battery... and followed the prevention steps. I only charge when my battery warning notification appears (less than 10%) and I dont use the usb cable anymore. When I recall why I got the problem with the previous bat, i realize it was because i had been using wm5torage a lot which required plugging usb cable. So now, when I need to sync my phone, I just use my old bat. My new bat has never given me problems (had it for 6 months now) and Im happy with it (although it streeetched my case a bit).
Just a few question before I do all the steps:
1. why we should charge it overnight on 1st step? can we stop charging after greenlight?
2. why drain batt without SD card? Can we drain it with SD inserted?
3. after on bootloader mode, it's only it? just leave it like that untill batt really empty itself?
thanx for this solution.
When I entered bootloader mode at 50% battery remaining it turns off after a short while. I connected the battery to a small motor to drain it but after a short while that too stops. When I checked the battery with volt meter it still showed 45-50% charge. What should I do to drain it?
oqaab said:
When I entered bootloader mode at 50% battery remaining it turns off after a short while. I connected the battery to a small motor to drain it but after a short while that too stops. When I checked the battery with volt meter it still showed 45-50% charge. What should I do to drain it?
Click to expand...
Click to collapse
Same with me. 2 times bootlader mode, just luck on 25% left before really off. Never got drain until 0%.
Connect it to a Voltmeter and lavce it connected until the voltmeter read 0.0volts. But be warned this might take a WHOLE DAY OR TWO. Has anyone tried the freezer method? does it really drain the battery?
I'm going to try the freezer method.
Report here later
Tbaba said:
Connect it to a Voltmeter and lavce it connected until the voltmeter read 0.0volts. But be warned this might take a WHOLE DAY OR TWO. Has anyone tried the freezer method? does it really drain the battery?
Click to expand...
Click to collapse
Tried freezer initially for 5 minutes and then for whole hour no harm came to battery but no gain as well! Charge didn't drop even one percent. Isn't there some fast way? Waiting with voltmeter for a couple of days is tiresome.
And now the agony has increased even though battery is fully charged if I remove the charger my device turns off. Trouble is that original batteries aren't available here in Pakistan, Rawalpindi to be precise. Now what to do?
Freezer method
I tried the freezer method for one night.
Next morning I took out the battery and let it come to roomtemp.
Took a long time charging (2,5 hours), but no result.
My device switch off randomly some time at 95% some time 50% etc.
i am using jw wm6.
yousaf2k said:
My device switch off randomly some time at 95% some time 50% etc.
i am using jw wm6.
Click to expand...
Click to collapse
you know what? I wonder if it isn't just a problem with jw rom... because most people encountering that problem use jw's rom... could anyone check it out? because my neww uni comes in few days...
Guys pls help..I have this problem,that when I'm charging my trinity,it couldn't reach 100% of charging (full charge) instead was stuck to 70%.eventhough i charge it overnight.I'm thinking if it is a battery prob or the charger. i am using the originally supplied charger & battery.
Thanks in advance...
Have you tried powering the unit off, removing the battery for, say, 15 seconds, then refitting it and rebooting?... Check the battery level after reboot?... Then retry charging again?...
Maybe a full discharge might help "reset" the above problem too?...
I'm not sure, but I think the Trinity battery management is quite dependant on so called "coulomb counting" and I reckon sometimes it goes a bit wrong.
LoopyLoo said:
Have you tried powering the unit off, removing the battery for, say, 15 seconds, then refitting it and rebooting?... Check the battery level after reboot?... Then retry charging again?...
Maybe a full discharge might help "reset" the above problem too?...
I'm not sure, but I think the Trinity battery management is quite dependant on so called "coulomb counting" and I reckon sometimes it goes a bit wrong.
Click to expand...
Click to collapse
i tried all your suggestion bro,after rebooting,the battery meter increased 10%,tried to recharge,but still can't reach full.i tried to turn off my device then charge it,this time it goes upto 90%.it's a good sign but,charging while my phone is turned on is better right?i have no computer around,maybe i'll try to charge thru USB later..if it went ok,maybe i'll buy a new charger..thanx loopyloo for that sound advice..
tranquil20 said:
i tried all your suggestion bro,after rebooting,the battery meter increased 10%,tried to recharge,but still can't reach full.i tried to turn off my device then charge it,this time it goes upto 90%.it's a good sign but,charging while my phone is turned on is better right?i have no computer around,maybe i'll try to charge thru USB later..if it went ok,maybe i'll buy a new charger..thanx loopyloo for that sound advice..
Click to expand...
Click to collapse
Try battery callibration procedure!
The actual standalone charger (if that's what you're referring to) has no intelligence in it to speak of. Battery charge monitoring/status will be an integral function to the phone itself using dedicated h/w.
Something's not quite right with your kit somehow. Maybe the battery has gone a bit wrong (could be replaced - how much use has it had?)... Rather that than the phone itself, in which case it'll need repair.
You can try tnyynt's suggestion of Battery Calibration. Basically this requires you to totally discharge the battery (I suggest thru normal use of your phone!) then when it shuts down "cos battery is flat" reboot the phone into its bootloader screen (power down, then press and hold Power & Camera buttons until Tri-colour screen is displayed)... Then just leave the phone until it powers off of its own accord.
This may take a few hours (I did mine recently and it took @4hrs!) but the battery should be as discharged as its possible to get by that point...
And if you're lucky, it might just sort your problem out when you next recharge!
Good luck dude!!!
;-)
LL
tnyynt said:
Try battery callibration procedure!
Click to expand...
Click to collapse
i tried to use charging thru pc and it charged 100%,but again,as i tried to charge using a friend's htc charger,still stuck at 70% charging...will try this battery callibration procedure tnyynt,thanx 4 the suggestion..
LoopyLoo said:
The actual standalone charger (if that's what you're referring to) has no intelligence in it to speak of. Battery charge monitoring/status will be an integral function to the phone itself using dedicated h/w.
Something's not quite right with your kit somehow. Maybe the battery has gone a bit wrong (could be replaced - how much use has it had?)... Rather that than the phone itself, in which case it'll need repair.
You can try tnyynt's suggestion of Battery Calibration. Basically this requires you to totally discharge the battery (I suggest thru normal use of your phone!) then when it shuts down "cos battery is flat" reboot the phone into its bootloader screen (power down, then press and hold Power & Camera buttons until Tri-colour screen is displayed)... Then just leave the phone until it powers off of its own accord.
This may take a few hours (I did mine recently and it took @4hrs!) but the battery should be as discharged as its possible to get by that point...
And if you're lucky, it might just sort your problem out when you next recharge!
Good luck dude!!!
;-)
LL
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thanx again LoopyLoo,you made this procedure (battery callibration) clear to me,on how to do it.will try this procedure and will report asap the result.hope it works (fingers crossed),and hope it's not an internal phone prob.
Thanx Bro!!:>
Let me know how you get on.
I'm a little baffled as to why you have problems with your friends charge too but not USB???...
battery callibration not worked...
I'm sorry to report that after 3 times of trying the battery callibration method,my trinity still doesn't reach its 100% capacity of charging thru the standalone charger..but mysteriously charge a 100% with USB charging..I'm still not really sure why this happened..maybe will try to see a mobile technician for PPC..anyways,thanx for all your suggestion..will report ASAP after going to a service center..
Have a TMOUS purchased in May. Latest stock rom/radio. When the battery is super low it goes through the process of shutting down - but when I plug it into the charger the phone will boot instead of staying shut down and charge. Will attempt to boot then go into Sense then shut down again and do the same process all over again. The only way to stop it is to quickly power down and it will stay down and charge. In any of the situations the phone appears to be charging.
Is this a problem with the ROM/Hardware or is something going on with the battery? Have an 8GB SD card with Android (no boot loader) and thats pretty much it.
Any advice would be appreciated.
I doubt that your battery is gone bad, but there are chances, try to condition your battery
Its just a little strange that the when the supposedly dead phone is plugged into a charger it boots up without pressing the power button. Don't think thats normal. Also when plugged into a charger when the battery is "dead" or near dead it should boot up and charge. This one doesn't - it boots - shows an LED charge light and then powers down and reboots. For some reason the battery with such a low charge can't power the phone and charge at the same time.
Will attempt to do a hard reset - maybe HD2 Tweak or something else did something to the registry and try it again. Since its under warranty will request another battery and take it from there. Don't think anything is wrong with the phone's hardware because it functions flawlessly.
stim141 said:
Its just a little strange that the when the supposedly dead phone is plugged into a charger it boots up without pressing the power button. Don't think thats normal. Also when plugged into a charger when the battery is "dead" or near dead it should boot up and charge. This one doesn't - it boots - shows an LED charge light and then powers down and reboots. For some reason the battery with such a low charge can't power the phone and charge at the same time.
Will attempt to do a hard reset - maybe HD2 Tweak or something else did something to the registry and try it again. Since its under warranty will request another battery and take it from there. Don't think anything is wrong with the phone's hardware because it functions flawlessly.
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If the battery drains and shuts off because it's out of juice, it WILL turn back on as soon as you plug it in, but it shouldn't keep rebooting after that...
Also if it's just shutting down on you in Android without warning when it's low, you need to condition your battery in Android so that it has the correct batterystats info.
No something is wrong. Ran it out of juice in WM this afternoon. Got the error message let it go. Went down and shut off. Plugged it into a car charger USB/cig adapter. Powered up go to tmobile screen/radio code then animation - rebooted did the same thing without touching it a few times then shut off - light led for charging did not appear.
Pulled battery - when charger disconnected - plugged charger - red light no reboot. Tried it again - same results with a hitch - it froze when it was charging - accessed internet explorer then it did a hard freeze - had to press reset button.
Don't know whats going on at this point - it shouldn't have done the freeze. So I'm going to experiement - pull the SD card (has Android on it) and try it again without the card. Try another card, try another charger and see - if I get the same results its either the phone or battery. When I have a charge greater than 5% there are never any problems. Only when battery level 0-1%.
stim141 said:
No something is wrong. Ran it out of juice in WM this afternoon. Got the error message let it go. Went down and shut off. Plugged it into a car charger USB/cig adapter. Powered up go to tmobile screen/radio code then animation - rebooted did the same thing without touching it a few times then shut off - light led for charging did not appear.
Pulled battery - when charger disconnected - plugged charger - red light no reboot. Tried it again - same results with a hitch - it froze when it was charging - accessed internet explorer then it did a hard freeze - had to press reset button.
Don't know whats going on at this point - it shouldn't have done the freeze. So I'm going to experiement - pull the SD card (has Android on it) and try it again without the card. Try another card, try another charger and see - if I get the same results its either the phone or battery. When I have a charge greater than 5% there are never any problems. Only when battery level 0-1%.
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Your battery pins aren't bent are they? (The little guys on the phone side that smash down when you insert the battery)
No, they are fine. I did call T-Mobile this afternoon and spoke to a level 2 tech - they think the battery is bad. Under warranty and have to call HTC tomorrow morning.
The phone does charge and does get to 100%. Drain in Windows seems fine and uniform but it does drop quickly once I get to about 20%.
Because of the reboot issue I think one of the cells is bad. Doesn't seem to want to trickle charge when the battery is that low. Tries to reboot - but can't get enough juice to sustain itself. Should just bypass through the battery as its charging. Either its the battery or somehow the charging circuitry is bad - who knows - with a new battery if it still does it then is the phone's hardware.
Will stop using Android for a while until this gets worked out - although I prefer the browser over WM 6.5.
stim141 said:
No, they are fine. I did call T-Mobile this afternoon and spoke to a level 2 tech - they think the battery is bad. Under warranty and have to call HTC tomorrow morning.
The phone does charge and does get to 100%. Drain in Windows seems fine and uniform but it does drop quickly once I get to about 20%.
Because of the reboot issue I think one of the cells is bad. Doesn't seem to want to trickle charge when the battery is that low. Tries to reboot - but can't get enough juice to sustain itself. Should just bypass through the battery as its charging. Either its the battery or somehow the charging circuitry is bad - who knows - with a new battery if it still does it then is the phone's hardware.
Will stop using Android for a while until this gets worked out - although I prefer the browser over WM 6.5.
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Def sounds like a battery issue then, if the pins aren't bent because that is the biggest symptom of bent pins.
Hi guys,
First of all these are my specs
N7 WiFi 16GB - 4.2.2 PA
Yesterday I tried to turn on my N7 but no go... so i thought: no battery since I didn't used my N7 for 2-3 days. I put it on charge a few hour but then when i tried to turn it on, again... nothing, so i tried to reset and hard reset but no effect... afte letin it a few more hour on charge I tried yet again and noting... i tried to keep power button presed for 30 sec, 60sec, etc... nothing...
Then i conected it to my PC and realized that nor W7 nor W8 recognized my device... It says "USB device not recognized" and also in device manager it says "Unknown device"
The thing is that when I Hard reset it conected to the PC it seems to restart since i get the "disconnected device" sound from windows and the then message "USB device not recognized" appears again...
I want to make this clear MY SCREEN NEVER TURNS ON! so i can't get in recovery or bootloader mode
Also fastboot doesn't see it
And yes I have the correct drivers on my PC on both W7 and W8...
So PLS...ANY Idea would be appreciated!!
Sorry for my English, I hope I was clear enough so that you guys understand my problem and what i did about it until now.
the fact that you cant even get the screen to turn on doesn't sound promising...
are you sure the battery is holding a charge?
jt.one said:
the fact that you cant even get the screen to turn on doesn't sound promising...
are you sure the battery is holding a charge?
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As far as I can tell there is battery, so that is not the problem ...
Probably would be best to send it to warranty and see what they say ...
TY for reply
Za_RO_Maniac said:
As far as I can tell there is battery, so that is not the problem ...
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Since the screen never comes on in any circumstance, what do you mean by "as far as I can tell"?
Normally - if the device is powered off - the bootloader (or some other low-level firmware?) displays a charging animation in the display when you plug the device into a charger. If the battery is completely discharged, it will show up as empty (all black with a white outline), and then display a "filling up" animation. If the battery is mostly charged, that animation starts with the battery icon almost full (mostly white) and the animation shows a "topping off" display.
In any event, if you can see that animation, you will know the exact charge state of the battery: the percentage of the battery charge is shown as the percentage of the battery which is white at the beginning of that animation.
But, since you are saying that you are seeing nothing, then you have no idea whether the battery has a charge unless you pull off the connector and measure the battery voltage: discharged is ~ 3.5v and fully charged just shy of 4.2v.
The thing you are seeing on the PC is probably APX mode. It is usually a sign of serious trouble - but only if you have positively verified that the battery has a decent charge.
Anyway, my point is that you kneed to know unambiguously whether the battery has a charge or not before you proceed any further. A discharged battery looks identical to a hard-bricked device.
BTW, I suppose that in APX mode the device is drawing a small amount of current; this means it will inevitably discharge the battery again if it is left in that mode.
So, here is one suggestion:
Take the back cover off the device and unplug the battery. Let the device sit for ten minutes or so with the battery disconnected. (If you have a voltmeter, you can measure the battery voltage at this time so long as you are able to do it safely - don't accidentally short it! - and without damaging the connector. If not, don't worry about it). Press the power button once or twice during this time to dissipate any stored charge in the device.
Then, reconnect the battery pack, but do not attempt to start the device yet! Just plug the N7 onto the charger and see if you observe the charging display. If you see the charging display, don't get all excited and try to start the device up right away! Let it charge for a couple hours before attempting to start it. If you don't see anything at all, it still might be a good idea to leave it sit on the charger for a few hours before attempting to start it up.
good luck
bftb0 said:
Since the screen never comes on in any circumstance, what do you mean by "as far as I can tell"?
Normally - if the device is powered off - the bootloader (or some other low-level firmware?) displays a charging animation in the display when you plug the device into a charger. If the battery is completely discharged, it will show up as empty (all black with a white outline), and then display a "filling up" animation. If the battery is mostly charged, that animation starts with the battery icon almost full (mostly white) and the animation shows a "topping off" display.
In any event, if you can see that animation, you will know the exact charge state of the battery: the percentage of the battery charge is shown as the percentage of the battery which is white at the beginning of that animation.
But, since you are saying that you are seeing nothing, then you have no idea whether the battery has a charge unless you pull off the connector and measure the battery voltage: discharged is ~ 3.5v and fully charged just shy of 4.2v.
The thing you are seeing on the PC is probably APX mode. It is usually a sign of serious trouble - but only if you have positively verified that the battery has a decent charge.
Anyway, my point is that you kneed to know unambiguously whether the battery has a charge or not before you proceed any further. A discharged battery looks identical to a hard-bricked device.
BTW, I suppose that in APX mode the device is drawing a small amount of current; this means it will inevitably discharge the battery again if it is left in that mode.
So, here is one suggestion:
Take the back cover off the device and unplug the battery. Let the device sit for ten minutes or so with the battery disconnected. (If you have a voltmeter, you can measure the battery voltage at this time so long as you are able to do it safely - don't accidentally short it! - and without damaging the connector. If not, don't worry about it). Press the power button once or twice during this time to dissipate any stored charge in the device.
Then, reconnect the battery pack, but do not attempt to start the device yet! Just plug the N7 onto the charger and see if you observe the charging display. If you see the charging display, don't get all excited and try to start the device up right away! Let it charge for a couple hours before attempting to start it. If you don't see anything at all, it still might be a good idea to leave it sit on the charger for a few hours before attempting to start it up.
good luck
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I was referring to this yes : "The thing you are seeing on the PC is probably APX mode."
So ill try your advises and come back with feedback !
TYVM