Database Users

Failed Backup Battery

This morning when I turned on my imate jam, it immediately went into a hard reset. Once I had a chance, I checked the battery levels and the unit claimed my main battery was at 67%, and my backup battery was zero%
I have had my Jam 9 months and have never had this sequence of problems before. The screen was not left on overnight, and there were no applications left running.
Can someone help me understand how the backup battery could be drained and the main battery be OK? Has anyone else seen this behaviour?
It will take me several days now to 'rebuild' my Jam with all its apps and settings......

Had the same problem with my JAM. Happened about a month ago for the first time and then again today.
My battery indicator also showed 0% Backup and 67% Main Battery.
Downloading newest ROM update tonight. Will post again if problem persist.

I was using version 3 software, and have since upgraded to v11. What version of s/w were you using?

jammit said:
This morning when I turned on my imate jam, it immediately went into a hard reset. Once I had a chance, I checked the battery levels and the unit claimed my main battery was at 67%, and my backup battery was zero%
I have had my Jam 9 months and have never had this sequence of problems before. The screen was not left on overnight, and there were no applications left running.
Can someone help me understand how the backup battery could be drained and the main battery be OK? Has anyone else seen this behaviour?
It will take me several days now to 'rebuild' my Jam with all its apps and settings......
Click to expand...
Click to collapse
Oh man, that's the worst Coincedentally I've had a sudden HR myself only yesterday when I restarted my laptop with phone still connected via USB. Luckily I make a full backup every couple of days using Sprite backup. Works like a charm, not a thing lost, everything was put back as it was before the HR

I upgraded to version 1.12.00 WWE.
Everything went well until yesterday
Still the same problem
No response on using the on/off switch only a clicking sound sometimes. LED indicator flashing red.
Soft reset no effect
Had to hard reset.
After booting up - backup battery 0% and main battery 75%.
I phoned the distributers in South Africa and they think it might be a battery problem :wink: . I am loading my new battery for the required 8 hours tonight. Will post again in about a week to report on progress
I also use Sprite Backup and set it to do a backup every night. It works very well a restore my system without any problems

I have an MDA Compact, I am also on ROM Version: 1.12.00 WWE, and have the same problem.
There again, I had the same problem before I upgraded recently too, so I can't say for sure whether it is a ROM problem.
Like the other posts, I am very careful not to leave BT, incoming beams, backlight etc. on. I also shutdown any running programs I am not using.
Yesterday, I had to do a full restore (using the Backup.stg file over ActiveSync) which worked a treat. Still, I am very frustrated over this intermittant backup battery drain problem. Especially when the Main Battery is showing over 90% full.
This "feature" seems to be a common problem.
Any other thoughts?

One week with a new main battery and .....
So far so good. No need for any hard resets this week
Had a message of low backup battery once after installing SysWatch Trial but system power utility showed full backup battery. Hopefully this was only a software problem as i didn't get it again after uninstalling syswatch.

Just a quick update
My problem seem to be something of the past.
Look like the main battery might have been defective after all

I have similiar problem since 3 weeks ago
HI,
My Imate Jam has rom version R 1.12 D 1.13 WWE
and since a month ago it started showing 0% backup battery.
I called PPCTECHS because they upgraded my jam to 128RAM and they told me to force a hard reset.
I did it and it worked for a coupled of days but jumped from 0% to 100%.
Then anytime I do a SOFT reset it shows me the message BACKUP BATTERY VERY LOW and the led is always flashing while the pocket is off or on 24 hrs a day!!.
I will buy another main battery and try your recomendation.
I am very desperated.

The led on my Magician is always flashing as well when the pocket is off or on
24 hours a day, on battery use.
The "backup battery" is the internal battery of the device and as far as I know is not user replaceable. The purpose of the backup battery is to give you 35-40 minutes to change the main battery before you lose everything in RAM. Replacing your main battery will not resolve the backup battery issue.
PPC Techs give 6 months warranty on their workmanship so if the backup battery issue occurred after the upgrade..contact them again and see if they can do something about it.

Thanks
I already ordered a new battery, but will contact PPCTECHS anyway. Thanks

Just an update.
This problem is gone. Looks like it was the main battery. Maybe a problem charging the backup battery?

I think it's a common problem. I bought a O2 XDA mini in German last year. And when it was shipped to China. I flashed GER rom to CHS1.3 Rom. When I got it, this problem still happen. As I checked it, it's backup battery problem. So today my colleague brought it back to German. Because my O2 XDA mini still under warranty. Because there are two years warrranty for O2 XDA mini in German. I hope they can help me solve this disgusting problem.

I had a similar AND slightly different problem. My phone died to a hard reset and then turned off soon afterwards. Instead of a red flashing light, I had a CONSTANT red light, (I think this means hardware problem???)
I removed the battery and re-installed it, did the hard reset keys, everything and the unit would not turn on. I charged it for one day straight, still would not respond. I then charged it for another day. Still nothing, (except for the constant red light). I had plugged it into the USB cradle and the battery charger separately but nothing helped.
I then (2 days later) plugged it into the USB cable at work, and this is where it gets REALLY weird!
The unit turned on, but the LCD has flashing, (like a loose connection), alternating between difference brightness it seemed. Once the hard reset stuff was over, I check the battery and the backup was at 28% and the main battery was at 94%.
As I left the unit to charge, (with the screen still flickering like crazy) it screen got better and better, though it sometimes still flickers a little.
Now, (2 weeks later) the batteries seem fine, I haven't had a battery issue since but this is the STRANGEST part!!! I can not increase the brightness beyond the third tick. If I move the brightness beyond that, it doesn't get ANY brighter! So I'm basically stuck right now at 3 brightness level only!
I tried a friends battery, and it was exactly the same, (brightness level), so I don't think it’s the main battery. Anyone have ANY ideas???

Hello
I had this problem for quite a few months,i did what some of u did and i bought a new main battery, and the backup battery was back to life again from 0% to 100%.
But everytime that i take off the main battery all my data goes in the same way as before even when the meters say that is on 100%.
Can anyone tell me why?is that a hardware problem with the backup battery?
if it is how can i get this battery? i've being searching on the internet and i couldnt find any shop that sells just one unit of this battery (Varta V18hrt).

Hi!
Varta V18hrt: where have you read that Magician use this battery for backup? Do you know how to replace it?
Thanks!

i took the backup battery out,so i could see the battery that uses!!it's quite tricky to put it back again!!

Today my magician took a short fall from ontop of the computer (which is on the floor) onto the carpet - no big deal I thought, but now it gives me the No Backup Battery problem.
I'm backing up all my apps and junk now since it fortunately hasn't done a hard reset or anything.
This seems very common, are the backup batteries in these things considered flakey? Difficult replacement?
Will have a look once I've backed it up.

Hello
As far as i know with the problem that i had, the problem wasnt the backup battery,just some problem with the main battery for some reason didnt charge the backup and make look like that it wasnt any battery there!

hi..
i've also got this problem.. my backup battery show 'none'. i've charging this
unit till its full..but my backup battery never charged up.. maybe its the
main battery problem. unable to charge backup battery.
by reading this threads it seems man battery problem.i'm gonna try to buy new battery(main)...and try charge again..thanks for
ur info...

XDA crashes at less than 25% power after ROM upgrade

I have an XDA Exec and I have just upgraded my ROM to the newest QTEK version. Since then, I have noticed that it crashes and reboots when the power level showing on the power meter reaches about 25%. I don't believe this problem was occurring before the ROM upgrade.
Although it stops working when 25% power is showing, I do not think that the battery life is actually reduced at all. It seems to me that it is more like the guage is inaccurate now and the power is really near zero when it crashes.
I wondered if the power guage needs recalibrating in some manner after the ROM upgrade because the settings have been lost. I know that some laptop computers need their batteries to be calibrated on first use. Does anyone have any ideas or information on this?
Thanks
Mark

Mark,
did you ever solve this issue? I have the same problem. Thanks for anyone's help.

Have only just noticed but im having the same problem to so annoying

Bad news, I am afraid. It is a harware fault and needs a repair.
In the end I returned my Exec to O2 under warranty. I got it back last week but they had forgotten to return the battery. After a phone call they sent me a free brand new battery by next day delivery.
Unfortunatelyt this means that I can't say for sure whether it was a battery problem or the phone itself. The covering letter with the phone said they had found a fault and repaired the phone, but since it seemed to be a stock letter, I can't be sure.
Anyway, my Exec certainly works fine now. I can get down to less than 10% with no crashes. I definitely did not have anything to do with the ROM upgrade.
Mark

Bad news, I am afraid. It is a harware fault and needs a repair.
In the end I returned my Exec to O2 under warranty. I got it back last week but they had forgotten to return the battery. After a phone call they sent me a free brand new battery by next day delivery.
Unfortunatelyt this means that I can't say for sure whether it was a battery problem or the phone itself. The covering letter with the phone said they had found a fault and repaired the phone, but since it seemed to be a stock letter, I can't be sure.
Anyway, my Exec certainly works fine now. I can get down to less than 10% with no crashes. I definitely did not have anything to do with the ROM upgrade.
Mark

Mark,
Thanks for the reply. That was not what I wanted to hear! I am going to continue playing around with it; I can't believe we're the only ones to have this problem. Let me know if you get any more news. I'm getting tired of sending the HTC in for repairs.

i-mate crashes with battery in less then 43%
My i-mate continues to crashes with the battery is less then 43%, apparently the problem occurred when I make the upgrade to ROM Qtek WWE_13077_130176_10900, was looked like that this version has something that change the battery configuration, since Qtek 9000 comes with 1750 battery mAh? I reinstalled the i-mate ROM 1.30.82 and the problem persists?
I made a test leaving the i-mate on, without using the radio until the battery settings showed 23%, then I made a phone call, the i-mate crashes in seconds. Somebody could inform what is the true voltage of the battery in the i-mate when it is 100% and when it is 10%, at the Main Battery settings?

Battery problem...u ccan verify this by using a differrent one may b from yr friend...

I have the same problem, its only started happening after the ROM upgrade from o2, before it would run down to 0% no problem but now it gets to 25% crashes and i have to reboot it and turn the backlight of otherwise it crashes again. Are you sure its a battery problem because ive had the same battery for 6 months and the problem only started after the upgrade.

Thanks to all of you guys for adding comments. Good to see others with the same problem. Misery loves company.
Anyhow, I can't exactly say my problems started with a ROM upgrade. I have two used universals. Here's my story:
PDA#1. Upgraded with previous Orange ROM as soon as I bought it and started having the 25% crashing problem
PDA#2. Never had crashing problem, upgraded latest Orange ROM, down to nearly dead battery today and no crash.
Hmm, to test the bad battery theory, I will swap the battery in PDA#1 with the battery in PDA #2, and if I get a crash, I can blame it on the battery. Otherwise, it's the OS. Both PDAs have EXACTLY the same programs installed from fresh ROM upgrades.

Battery test
Hi PDAholic.
Which was the result of the test with the battery.

Hi
See my previous post in this topic. I can confirm that my problem seemed to start when I upgraded to the newest QTek ROM (from original O2 ROM). However after it has been returned to O2 for a repair, I have once again upgraded to the same ROM and now it works fine.
So, it must ether be a hardware fault on the Exec or a battery fault. My evidence is not consistent with it being something to do with the ROM version.
Anyone have definitive information on this problem?
Mark

Mark: I thank you for your post--but you have to admit, there is nothing wrong with a little experimentation!
Josedias: My experiment is still underway. I will say that taking out the nearly dead battery from non-crashing pda and putting it into the crashing pda did not result in the latter pda crashing. However, I am now waiting for the battery from crashing pda (which is now in non-crashing pda) to die. If it does, the problem is the battery. I actually have another theory if none of this pans out, which I will present with my next post.

Pdahollic
Will be good to hear what your fndings are.
I spoke to o2 today and told them about the problem with the battery they tried telling me that it was software related then i told him that i was using the latest software from there website and he was like hmmm ok let me put you through to returns. Got put through and the kind person that i spoke to there said just to pop it in the post with the returns number and will send you out a new one the same day.
So i should hopefully have a new 1 by the end of the week will let you know if i have any problems

Okay, interesting results here...
I was actually unable to reproduce the shutdown on either PDA, with either battery!
I have a theory why, and perhaps those of you with the problem could try and see if it fixes your devices.
When I started the experiment, I wanted both PDAs to be as equal (controlled variables!) as possible. So, I charged both overnight until the green light came on, then did a soft reset to both PDAs. I have a feeling this might have somehow reset the battery meters in both devices.
Pretty much all PDA manufacturers recommend when you first get a device to charge it to 100% then begin using it. I do know that when I did the ROM upgrade on the device that kept crashing, my battery was very low. So, I presume that when I started using the device, the battery calibration was way off. Say that the device thought the battery was at 100%, but it was actually only at 75%. When the battery discharged to 0%, the device thought it was at 25%, and thus did not issue any warning messages. Then, without warning, the device died and would not come on without charging (which is what mine did).
I don't know for sure if this is what has been happening, but it makes sense to me.
My next experiment would be to stick a near dead battery in a device with a fully charged battery and see what happens. Although, at this point I probably "ought to leave well enough alone."
Again, I suggest to all of you to charge the device overnight to 100% WITH THE GREEN LIGHT ON, then do a soft reset and see if your problem is solved.
I will keep you guys posted on any further problems. Good luck.

Hi everyone!
A bit out of topic but I could not find any other discusion that could relate to my problem which is also related to battery.
I've got this guy who bought a brand spankin new XDA EXEC straight from Taiwan and the lame ass used it for about 4 hours without preformating the battery until it seized on him. It happend at the time of Active Sync instalation.
It did not die out sooner because he had it connected all the time to PC via USB cable thinking that this will charge the battery.
Now all he can see is the O2 welcoming screen and the ROM initialization figures.
Any ideas guys? I feel sorry for him and am trying to help him somehow.

I presume he has tried to do a hard reset (both softkeys, reset button and power). If that doesn't work, he could put it in bootloader mode, disable USB, and try reloading the ROM. Make sure he realizes that it takes a LONG time to soft reset the Universals. A common nube mistake is to keep hitting the reset button thinking it has locked up on the splash screen. Not that I would ever have done that...

I received a T-Mobile MDA Pro on tuesday and it has the same problem - but, my battery seems to die at 50% and will only power back on when the charger is plugged (mains or usb) in?

Hi guys ive just been on the phone with o2 and i have been told that it is indeed a hardware fault and that i will be getting a new one back from them in the next few days.

Qtek 13077 ROM ????
Could somebody inform what is the true voltage of the battery in the i-mate at 100% and when it is 10%, in the miter?
I have charged the unit till 100% led = Green, then soft reset, the problem persist?
Now I am 100% certainty that the problem occurred when I made upgrade to Qteck, we needs to investigate what the the Qtek ROM this doing with the JasJar?

My QTEK 9000 (Universal) blacks off at 38% battery power?

Hi!
I'm using the latest QTEK ROM with A2DP.
The problem is that my set blacks out at 38% battery power and refuses to power up after that unless I re-connect to the AC for charging. It happens a couple of times already. Any setting(s) in the Universal to check this?
I remember I managed to get the battery level at real low level (less than 5%) previously prior to the ROM upgrade.
Thanks

Hi,
I have a similar problem.
I charged the unit till 100% then reflush the Rom
Regards
JoseF

RE
Hi JoseF
Thanks, however, I'll consider this as my last option
Meanwhile I would like to get more feedback on this issue

Qtek 13077 ROM ????
My i-mate continues to crashes with the battery is less then 43%, apparently the problem occurred when I made the upgrade to ROM Qtek WWE_13077_130176_10900, was looked like that this version has something that change the battery configuration, since Qtek 9000 comes with 1750 battery mAh? I reinstalled the i-mate ROM 1.30.82 and the problem persists?
I made a test leaving the i-mate on, without using the radio until the battery miter showed 23%, then I made a phone call, the i-mate crashes in seconds. Could somebody inform what is the true voltage of the battery in the i-mate is 100% and when it is 10%, in the miter?
I have charged the unit till 100% led = Green, then soft reset, the problem persist?
Now I am 100% certainty that the problem occurred when I made upgrade for Qtek, we needs to investigate what the the Qtek ROM this doing with the JasJar?

Ive 3 batteries
The standard 1620mah dynapack which works fine 100% to flat no worries
A 3200mah extended which will charge to full but dies at 43%
(the guy replaced it with another which did the same thing)
and
A 3000mah which will go flat ok but wont charge beyond 47% and the orange light stays on forever, although luckily it doesnt fry.
has anyone had any of these extended batterys work ok?
Just to add a bit of info, all modern li-ion have a built in fuel guage chip which tells the device its in how much power is left in the cell. so its possable this is a battery issue rather than phone problem
r 1.03.00
g 42.36.p8
d 1.30.90.wwe

RE
You may be right about the battery thing
However, I've tested my existing battery to very low level prior to the ROM update without problem
And with other feedbacks in this forum I doubt it could be a coincidence that our batteries are having the same issue.
I would rather think its a ROM thing.
I'll need to test my battery on another Universal before confirming.

I just tried to flash to an older rom but got a country error, there seems to be no old orange uk rom i can find.
Im a bit new to all this rom flashing business and also wanted to try an older rom to check out the camera as im not sure if i have a realy poor camera or if there is a software issue with that in the new orange rom also as one guy in another post is getting far better results out of his camera mines like a real snow storm in the dark parts of pictures

RE
Yes, the new QTEK ROM update does cause the camera quality to suffer especially when in night mode
Well, just have to wait for another ROM update to resolve these issues :roll:

Fosa or Zarn
You have a digital multimeter?
Case yes: You it could measure the voltage of the battery when is total loaded 100% led=green, and when the battery will be flat 0%. This test would be excellent to verify if the Battery power remaining is correct. Currently when my battery is with 3.28V = 55% in the battery power remaining = crashes.

ok, can do, not that it will help much unloaded.
I'll charge the original cell and post the results shortly.
The battery management wont always turn the battery off at the same point as the battery ages it will change. You have to bare in mind that a battery is a little like a piece of rubber the harder you push on it the bigger the dent but when you stop pushing it recovers its shape.
The same goes for the voltage of a battery, when you draw a large current the voltage will drop further than if the device is in standby but once you disconnect the load there will be an amount of recovery
li-ion batterys are far more complicated than they first appear.
The battery is by no means connected directly to the phone.
there is a microprocessor in the battery that controls both charge and discharge via 2 fet transistors, buy doing this it protects you against the battery exploding/catching fire from over charging or over discharging.
As far as im awaire the microprocessor will adjust both switch on and switch off from many variables not just voltage drop.
The phone its self mearly supplies power to the charger built into the battery and draws power from the battery all the measurement and battery managment is within the battery
This is why the battery suddenly just stops and you need power to bring it back to life.
so in theory no matter what the condition of the battery it should always give a full scale deflection from full to empty as the onboard management should know how much capacity is left in the cell and report this via the data lines to the phone
If you connect a bulb to an almost flat li-ion battery you will find little drop in brightness before the battery just cuts power totaly to protect the cell within from over discharge.
Something that springs to mind that hasnt been mentioned here is have you checked all 4 battery contacts are clean? just a thought because the two larger outer pads provide power while one or both of the smaller pads send data on the charge status to the phone.
heres some interesting reading
http://www.batteryuniversity.com/parttwo-34.htm
Intresting reading on the care of li-ion as they dont like being either fully charged or fully discharged..strange eh...
http://www.maxim-ic.com/appnotes.cfm/appnote_number/128
http://www.intersil.com/data/an/AN1174.pdf
two examples of li-ion battery management.
safety law dictates any li-ion that is user replaceable must have one of these little chaps built in.
hope that makes sence
/ramble

RE
Sorry zarn, but I don't have a digital multimeter.
Is your test going to prove that the battery is going to its end of life soon?
How could that be since the Universal is less than a year old? :roll:
At any rate I'll be testing my battery on another Universal without the QTEK ROM update to determine whether its a battery issue or the ROM update issue.

Im just going to do it out of interest... like i said in the previous post its not likely to prove anything except if the guys battery is totaly out of whack

Dear Fosa and Zarn,
I’ve already known those URLs:
http://www.batteryuniversity.com/parttwo-34.htm
http://www.maxim-ic.com/appnotes.cfm/appnote_number/128
I liked very much this article:
http://www.maxim-ic.com/appnotes.cfm/appnote_number/128
However, when I asked to verify the voltage of the battery and without taking it off the charger, I’ve put two tiny wires on the terminal of the battery, in the manner I could verify the voltage without taking it off from the Jasjar. Last night I’ve left it charging until the green-led light and I’ve noticed that the voltage was 4,231V = to 100% on the battery power remaining miter.
I’ve did a test putting the light of 4V to discharge the battery, and at the 2,83V, it disconnected automatically (stopped to supply current). In more or less one minute, it starts to provide energy again, in other words, the protection circuit of the battery is Ok, and is not with this tension (2,83v) that the Jasjar stops, and only when is 3,28v.
I’ve got the feeling that the problem is on the ROM, however I did reinstall the original ROM and yet the Jasjar still crashes at 58% of the battery(= 3,28v).
Before making the upgrade the miter was going from 100% to 5% without crashing.
With the ROM Qtek WWE_13077_130176_10900 the miter shows 100% to 42%, and at this point it starts to crash.
I’ve already bought a new battery just to test it, but it still not arrived from Hong Kong, and as the customs is on strike here in Rio de Janeiro, Brazil, I don’t know when I’ll get it.
Until now I think the problem is that the Qtek ROM made some changes on the firmware or in the register of the battery, changing the miter calibration.

Battery results
Im suprised it cut of that low, thats very low for a 3.7v li-ion, thats more what you would expect from a 3.2v.
Anyways, as requested heres the resuts of checking the voltage at various points.
This is using an original dynapack 1620mah battery as supplied by orange with the phone, but its around 3 or 4 months old now so far from fresh.
the meter used was a Avo M801 (not a cheap one though is probably due to be calibrated...)
100%----4.16v straight off charge still warm
75%-----3.93v
50%-----3.78v
38%-----3.76v
25%-----3.73v
10%-----3.65v
5%------3.63v
cutoff----3.58v
Im going to do the same with the extended batterys im having problems with just as a comparison, will post the results here if anyone is interested

Whats going off here...?
I just put one of the extended batterys in which was fully charged..
to be greated with a blank batery bar, and unknown in the chargeing remaining window... unpluged and repluged the charger and was then told battery at 225%
doh.....

Jasjar battery miter
Hi Zarn
Thanks a lot for the table of % * V, now I am certain convinced that the Jasjar miter needs to be calibrated again, I believe that the problem is the DLL or the responsible register for this detail(miter)?
While I or somebody of the forum does not find the solution, I will continue using this way, because the battery still lasts for 24h.

RE
OK guys, bad news
I used my battery which knocks out at 43% from my QTEK 9000 set and put it into another QTEK 9000 set without ROM update and it also fails to boot up unless I connect it to an external power
I hope that QTEK can release a small ROM update to resolve this issue

so hang on..
you put your battery into another non updated rom handset and it still wasnt working properly...
surely that means your battery is at fault not the rom..
cant u borrow the other guys battery for a few hours?
Are these original batterys were talking about btw (1620mah dynapacks)?
or cheap replacements?

RE
Hi zarn,
My battery is the original default battery....the Universal is less than a year old
Could it be that the new ROM update has changed something in the battery...maybe the IC chip in the battery, if any?

RE
zarn,
If you'll read another similar thread you'll find many others with different variants of the Universal facing the same problem after upgrading the new QTEK ROM update with A2DP
Are you saying their batteries are faulty too...such a coincidence?

MDA Pro - Phone/Radio cutout at 70% battery

First off, I have seen many threads on the MDA PRO (and all its variants) cutting out at high battery power levels and from what I can see there doesn't seem to be any concrete resolution. But here is my situation.
I bought a new sealed MDA Pro and immedialy flasshed to the latest T-Mobile rom. Thats where the problems began. I seem to be plagued by the MDA cutoff at 60-70% problem.
The way it manifests is the radion loses signal and cannot locate the carrier at or below 70%. At this stage a reset of the device and it reboots but as soon as you use the phone or wifi it crashes .. black screen.
As with others if I connect the USB cable and charge by PC or mains everything returns to normal. Not a very mobile solution!!
I have tried every variant of ROM out there and the problem remains. I have charged the battery for 16 hours etc etc. I have tried phone in Auto, GSM modes .. same problem :!:
The only thing I haven't done yet is buy a new battery and hence my post.
Will the purchase of a new battery solve the problem? As with other threads it would seem this came along with the latest roms. Does flashing a ROM when the battery is less than fully charged cause problems?
On a final note, if after the radio loses signal it is turned off I have been able to run the device down to 20% running videos and MP3. Is this a probem with radio levels above1.09.00 (Just thinking out loud)
HELP: This device is perfect for my daily use and having purchased a less than mobile device I am now close to getting rid .. but I dont want to
Any advice greatly appreciated... expecially from those who have fixed the problem.

I had this problem and a new battery fixed it.

Thanks. Look slike a new battery

There seems to be different speculations on what causes the battery problem on the Universal: the power charge cable quality theory, one idea about the battery level stored inside the batter which some claimed to registry heck could change and another idea about the battery 500 charges limitations.
But if yours is brand new, then none of the above applies... So the refresh to a new Rom definately must have something to do with it. Wonder anybody who had bought a new replacement battery after the power drop had done another rom refresh and whether the same problem returns?
I have just bought a replacement battery (1800m Ah at standard size by MoMax which gives me another 30% more power everyday which is something good I got from paying for a new battery) yesterday to change the old one out for the same reason. Looks like until someone found the real cause, I am keeping the old one for my next rom refresh...

New Battery ... problem resolved.

Another Jasjar Battery Drain Problem!

Hi all, i have developed this weird problem in my jasjar and i'm sure it's some settings that need to be changed somewhere and not the battery itself. When i first got the jasjar, it gave me a good 48 hours battery backup on standard use but i lost my charger and started using usb to charge it. it's since then that my jasjar drains the battery in less than 12 hours. i have tried replacing 3 batteries but to no better effect. I remember reading something about the Li ion polymer batteries having the memory effect or something and how to reset that in the bootloader mode. if you guys could help me figure it out and fix the problem, i'd appreciate it! here's the details of my rom.
R:1.13.00
G:42.47.p8
D 2.01.06 wwe
the rom is the wm6 from jwright.
(nb: i had the same problem with my shipped wm5 rom and i thought upgrading it would help but it didnt apparently).
How long do i need to use the battery to check the drain thingy. the reseller tells me to use it for 2 weeks before judging it. i'm screwed with having no battery life to this otherwise beauty of a device! if i could get any help, it would be much appreciated. thanks in advance. (josh).

Had the same problem, been happening all week, the phone would just switch of even though it registered over 80% charge. no i am happy again because i read on the forum that you need to totally discharge the battery occationally for it to get to a full charge, it appears that there is some sort of memory effect where the battery thinks it is nearly discharged, try it, i am sure you will find that it workes.

Had the same problem, been happening all week, the phone would just switch of even though it registered over 80% charge. now i am happy again because i read on the forum that you need to totally discharge the battery occationally for it to get to a full charge, it appears that there is some sort of memory effect where the battery thinks it is nearly discharged, try it, i am sure you will find that it works.

awright...i'd try it. thanks for ur help.
mayer said:
Had the same problem, been happening all week, the phone would just switch of even though it registered over 80% charge. now i am happy again because i read on the forum that you need to totally discharge the battery occationally for it to get to a full charge, it appears that there is some sort of memory effect where the battery thinks it is nearly discharged, try it, i am sure you will find that it works.
Click to expand...
Click to collapse
thanks..

I too has a similar problem but this method did not solved my prob as my jasjar switches off by itself at 40%.

I had a similar problem a couple of weeks ago as a charge would last less than 24 hours when I used to be able to last 2-3 days.
Soon sorted it when I found that the Jasjar had decided to disable the automatic switch off, now a charge is back to lasting 2-3 days.
Mike

Had my MDA PRO for 1.5 years, and never had this problem. Battery lasted for 2-4 days on average, although now I have a 3200mAH battery it lasts for well over a week on a single charge
Lithium ION and Lithium ION Polymer (the HTC Universal uses the latter) do not suffer from any "memory effect". The only battery type that does to any significant extent is Nickel Cadmium, which is rarely used these days.
It's also impossible (well, almost) to completely discharge Lithium ION Polymer batteries - internal circuitry in the battery shuts down the cells when the charge gets too low, at up to 10% charge. This is because a completely discharged L.I.P. battery becomes unstable, broken (unable to be recharged), and runs the risk of explosion or leaking in this state. So don't attempt to drain those batteries completely dry folks - it's dangerous! Letting them run down naturally in your Universal should be safe though because of the cut-out mentioned above.
Maybe the Uni just has a large batch of bad batteries? You should also check what apps you have running on it all the time, and how often you use bluetooth and wi-fi - these two REALLY drain the battery if you keep them on all the time... Also try MemMaid, this is great at cleaning up your notifications queue, which is where lots of apps leave old and obsolete entries clogging it up.

I have the same problem. I do not know where the charger is, so I am always using the USB while syncing. I also tried 2 batteries, but they both last about 12 - 14 hours. Maybe it is caused by WM6.
I did not quite get this solution:
"Soon sorted it when I found that the Jasjar had decided to disable the automatic switch off, now a charge is back to lasting 2-3 days.
Mike"
What is the solution?

2 421....:
sorry for lang. the above understands(i hope)
nastavenia(settings)/napajeni(power)/rozsireni(advanced) tam zaskrtnes co xces a nastavis casy. ak pouzivas phonealarm musis aj tam. pozri si aj podsvirtenie(backlight).
btw aj had the same prob. appeared after 6mnth. i bought new battery. btw here is several threads with same prob. try 2 look for solutions there(imho its only one-new batt.)

I feel like I'm walking on eggs...I bought my Jasjar used on eBay just over a year ago, still the original battery. I almost never use the 110v charger, always a USB conection with my Mac, often recharging at 55-75%. I just intentionally ran down my battery to 18% (got warnings to recharge), and recharge via USB/Mac again. It took me almost 4 days to get to 18%, and Bluetooth is constantly on for ready use with my earpiece.
Curious: are the problems with original or replacement batteries? Cheers,

Update to Radio 115 or 114

It's worth taking into consideration that when flashing, you really need to have a full battery. There are reports of batteries starting this kind of behaviour after user has flashed with drained battery, then causes battery charge issues until next reflash.

IMHO even if u charge with a full charged battery still u get a prob so i think its a common issue with the jasjar and its power managment software itself by default as lot of people with diffrent ROMs are complaining about it.

no changes...
well, folks, i tried all these gimmicks but not to any definite changes ... i guess i need to consult the service center guys at last...i didn't want to do that but i guess i need to. i'm sure it's not my battery as i've replaced 3 of them...i dont kno what else to do!!! thanks for ur posts tho as i get to try diff things to check if ma battery is doing ok...keep postin...thanks...
josh.

how 2 discharge a battery >>>>>

problem with battery?
I have the same problem, it firs appear on original battery when charge was 40-50% so I have bought the same battery model (1620mAh). But it doesn't help. Now I,m using the 3200mAh battery and it doesn't help as well. The thing is that XDA switch off it self always on deferent charge level (sometimes is on 20%, 45% ar 80%...so is very difficult predict when it happen again). And one more thing...when it switch-off and I try to switch-on back, I can't (keep switching off), only slolution is put on charger!!!
I have downloaded the service manual (I think called "confidential") and it mentioned that it could be a problem with main board (so its HW problem). So can anybody tell me is a problem with bat or MB? (replacing the MB is fcjfdj$#ing expansive). Thanx.

well if your XDA does not switch on until you start charging it that's a clear indication that your battery is empty. I have the same with my faulty battery. Replaced it by a working one and it's fixed. Something is definately messed up with the charging circuit or the batteries though. They are not supposed to die so easily.

SpyderTracks said:
It's worth taking into consideration that when flashing, you really need to have a full battery. There are reports of batteries starting this kind of behaviour after user has flashed with drained battery, then causes battery charge issues until next reflash.
Click to expand...
Click to collapse
The first time I flashed the PDA I ruined my battery. This time I thought I'd be smart and I put in the old battery while flashing. After flashing I put back the new battery and now that one is broken too! It wasn't even in the PDA when I flashed it. How bizarre is that?
I have to admit I did not fully charge that new battery before flashing, but I figured it would be safe since it wasn;t in while flashing. The battery worked fine the day before I flashed my phone (got the "charge now or save your work" message), but after the flashing and putting it in, it just crashes at around 30% or 40%. The usual battery misery.
Maybe I should try fully charging it and then flashing again. Trouble would be how to get it fully charged though. I always felt charging cuts off early on the "broken" batteries (pull the charge plug and stick it back and it charges for a while again).

I managed to restore my battery to good health by completely discharging it in bootloader mode.
First I completely charged it. When the led went green I pulled the shcarge cable and connected it back again. After doing this a few times it doesn't stay orange so long and then I stopped and left the cable disconnected.
I reset the phone (on full battery) and then I set the unit to boatloader and waited for it to completely discharge. I reset the phone again (on empty battery) and low and behold my trusty "charge now or lose data" warning came back.
BTW I reset the PDA hoping maybe it would store the power levels. I remember that trick from my Palm days where sometimes you had to reset a PDA on full battery to calibrate it.
I charged it back to full capacity and started using the phone as normal. When the battery was empty I got no crash but a friendly warning telling me my battery was going low. Phew.
Will try the same with my other troubled battery over the weekend.

I have the same Issue.But , I think it's about Rom.
and I'm try a lot of ROM version ,only one Version canbe use more than 3 day.
I can't find any reason ,.
discharge in bootloader ,I do it ,But battiery is same time for used.