Database Users

wizard draining battery !

Dear All,
I have a strange problem here.
I just purchased a used wizard and installed a new t-mobile rom, but, once I connect the charger or the usb, the orange charging light starts blinking!
The battery doesn't charge, but drains very fast.
I re-installed another rom, but it's the same, and I installed another, but also the same.
I checked the battery on another phone, but nothing was wrong with it, then I installed the battery of the other phone on my wizard, and it did the same problem!
I checked another charger, but it's the same thing!
The phone is fully functional, and works 100% other than when charging it!
Any suggestions???

Same problem here. The battery drains almost emidiatly when I charged it. After a couple of time it wont even charges anymore. Tried 3 batteries. All batteries seems to have died. Horrible.

Please... anyone recognize this problem?????

To add: I put in a brand new OEM battey from Sanyo. Charged it with the wallcharger. Then when I put on the device it drains almost imediatly. A brand new battery !! Then tried to recharge the batery and then the phone shows a red led light? What is going on!.

OH, AND NOT FORGET i DID install a new ROm from Moski but the same problem. So, replaced the ROM and battery. Is the wallcharger defect or my QTEK 9100??

RichardV said:
OH, AND NOT FORGET i DID install a new ROm from Moski but the same problem. So, replaced the ROM and battery. Is the wallcharger defect or my QTEK 9100??
Click to expand...
Click to collapse
Sounds like a defective wizard to me. Might be time to return it and get a replacement.

If you have already purchased new OEM batteries, and you're still having this problem, one would have to assume that it's the charger you're using. A buddy that works with me bought a mini USB wall charger for his Cingular 8125, and on the 1st charge, it completley drained his battery, and it was unable to charge again. $50 bucks later for a new OEM battery and charger, and never had this problem again.

Thanks for the responces. I ordered an aftermarket charger and hope that that solves the problem. I recently bought it for about 210 euro 2ndhand. Sometimes it does startup and looks ok but then in less then a minute the power dies. I will look after the 5 volts and 1 amp. on the new charger by the way.
Once again, if someone recognice this problem I really are interested in the solution if found.
Offourse I will let now if I found out. I'm praying that the wallcharger is the problem.

i had that problem when i was using the razr charger with my 8125. i thought it was the same because they are both mini usb. WRONG!
i hope this is not what you are doing. is your charging cable oem?

Hi. Got a replacement wallcharger and when i plug it it in the led on my Wizard turns RED emediatly. Charger has the same spec. as the OEM. So. Still a dead wizard. Anyone any thoughts?
By the way. I cant even find out what the red light on my wizard means. Should be orange when charging. Red doesnt looks good.

same problem
I'm having almost the same problem
The red light
My wizard won't start, and by the way, I was charging it with a motorola charger cause I only had the car charger , and the cable is 2 short. I actually charge it several times... a month and some, no problems, till now I posted a new thread,
I don't know what to do ... Can it be the main battery ... mabe my charger depleted it I had resco tools installed an it said that my main battery is at 100% ...
Now when I plug it in the car charger, it does nothing..., and when I plug it in the moto charger it shows a red light.
If someone finds anything, please reply.
I found a thread...
Plug in your pda without your battery inside. It shows the red light. Insert your battery, and the led will turn off. Press the power off button, and, voila....it starts. By the way, after it was brought back to life, I quickly pluged into the usb...and the led turned orange. My battery was 0%
Hope this helps. By the way, it's not necessary to work from the first time. Worse possible scenario, let your pda to "rest" without the battery insite for an hour and then try again. I heard it has something to do with heat...I mean, if it's cold, there are less chances... don't laugh It may be true. For me it worked the first time. Good luck.

I was having the same problem. It was fine for a week using this other USB charger then yesterday it was not charging and today it was totally dead.
Thank you guys for the information
but what is different about the chargers? or USB cables I mean?

There are a few scenarios going on here.. (some of these things people have tried and got the same result, but i want to lay them all out on the table here)
A. The aftermarket chargers you are using may not meet the 5V 1A rating as the factory chargers... aftermarket chargers or even factory chargers for other devices such as motorola have an output of 5v 0.5A. Now the .5amp charger can charge the device just as long as its idle and not draining faster than it can be charged.
B. Defective Charger
C. Defective battery
D. Defective Phone
*Note- i did not mention roms due to the fact that phones will charged when they are completely off (not asleep)
Now that we have identified the possible problems we can start to identify possible solutions. (If your phone is completely dead and wont turn on then you may need to search for a thread entitled "Dead Wizard, Never lets revive" in the upgrading board)
Before you go to bed, turn the phone completely off and plug into the OEM charger that is rate output of 5V 1A, make sure the the orange charging light is on and go to sleep (you, not the phone, its off remember ) If this does not solve the issue then try this same thing with another battery and the same charger, if that fails, then try this the old battery and a new charger.....
If after you do all of this and its still not charging properly then your phone is defective.
if i didnt make much sense its cause i am tired and will clarify in the morning if i can

I'd like to make an observation here about some rather choppy battery life that I have been experiencing with my Wizard. I'd like to know if this is inside NORMAL behaviour parameters.
At 8AM this morning, my battery was disconnected from the charger with the battery fully charged.
Between 8AM and 11AM my total phone usage duration was 10 minutes. At 11AM, my battery displayed 91% Charge.
Then exatcly at 11AM, I turned on my Opera Browser and used it for 12 minutes, after which the battery dipped another 7% from 91% to 85%. I noted this reading at 11:12 AM.
After this I put my phone on standby. From 11:12 to 18:30 hrs, I recieved 1 missed call and a total of 2 SMS plus 4 emails. During this time I have not made or recieved any other calls. At 18:30 hrs, I noted that my battery was at 71%.
My phone is set to send and recieve emails every 15 mins. I have only one pull email account and one push email account.
Other than what I have mentioned above, there was no other phone activity. I do not have any background apps running except for SPB Pocket Plus and the Battery Status Application.
Please let me know if this is similar to what all of you are experiencing or should I get a new battery? My phone still has about 6 months of warranty on it? Will I be able to get a replacement for it on these grounds?

leepriestenator said:
I'd like to make an observation here about some rather choppy battery life that I have been experiencing with my Wizard. I'd like to know if this is inside NORMAL behaviour parameters.
At 8AM this morning, my battery was disconnected from the charger with the battery fully charged.
Between 8AM and 11AM my total phone usage duration was 10 minutes. At 11AM, my battery displayed 91% Charge.
Then exatcly at 11AM, I turned on my Opera Browser and used it for 12 minutes, after which the battery dipped another 7% from 91% to 85%. I noted this reading at 11:12 AM.
After this I put my phone on standby. From 11:12 to 18:30 hrs, I recieved 1 missed call and a total of 2 SMS plus 4 emails. During this time I have not made or recieved any other calls. At 18:30 hrs, I noted that my battery was at 71%.
My phone is set to send and recieve emails every 15 mins. I have only one pull email account and one push email account.
Other than what I have mentioned above, there was no other phone activity. I do not have any background apps running except for SPB Pocket Plus and the Battery Status Application.
Please let me know if this is similar to what all of you are experiencing or should I get a new battery? My phone still has about 6 months of warranty on it? Will I be able to get a replacement for it on these grounds?
Click to expand...
Click to collapse
from what i can remember when i had my wizard i think that sounds pretty good actually...

thanks for that shogunmark. Do you have an approximation as to how much battery drain there would be for apps like Opera? 7% in 12 mins seems to be a lot. Also I have a feeling that if Opera is running in the background, the battery drains very quickly even though the device is set to go into standby after 1 min of inoperation. I can't confirm this but I have a feeling this has happened to me.
Also, since my messaging app checks for email ever 15 mins, how much of a battery drain will that be?

leepriestenator said:
thanks for that shogunmark. Do you have an approximation as to how much battery drain there would be for apps like Opera? 7% in 12 mins seems to be a lot. Also I have a feeling that if Opera is running in the background, the battery drains very quickly even though the device is set to go into standby after 1 min of inoperation. I can't confirm this but I have a feeling this has happened to me.
Also, since my messaging app checks for email ever 15 mins, how much of a battery drain will that be?
Click to expand...
Click to collapse
i cant offer an approximation since it has been a month since i switched to the hermes.. but i can say that i would pull mine off the charger around 8am and by 11pm i would need to charge.. but i used data heavily.. opera, pushmail, at LEAST 30 text a day, and maybe 45 minutes in calling a day. now 7% in 12 minutes does seem excessive, but running java apps is demanding on the phone, takes a lot of resources.

Tips on extending battery life.
shogunmark said:
i cant offer an approximation since it has been a month since i switched to the hermes.. but i can say that i would pull mine off the charger around 8am and by 11pm i would need to charge.. but i used data heavily.. opera, pushmail, at LEAST 30 text a day, and maybe 45 minutes in calling a day. now 7% in 12 minutes does seem excessive, but running java apps is demanding on the phone, takes a lot of resources.
Click to expand...
Click to collapse
I can not aggree with this. I use my windows live and it syncs every 15 min I send out at least 300 txts a day and I use around 90 min of talk time during the day, (thank God for unlimited txt msgs and free nites and weekends). I use the web at least 40 min total and I listen to my MP3s on it on the train ride to and from work which lasts about 20 min from Manhattan to BKlyn. I dont recharge the phone the until I get home around 7pm charge for an hour and go out again.
I have noticed that certain Roms tend to suck out power much like my x-girfriend sucks out my money for Child Support. I have played around with running certian programs and adjusting the backlight settings and this has helped me keep the phone running all day.
My suggestion would be to change the rom and see if your drain contiunes. Then try to have your backlight turn off with in the 10 secs. If you are overclocking your phone when you dont need that extra Mhz turn it back down to 195 or if your really adventurous turn it down to the 170's for some extra power savings. Last but not least make sure your Active Sync is not turning on all the time by adding a fake server source. If all that fails buy the cradle with the spare battery charger and carry an extra battery. Good luck and godspeed!

Use 1A charger
This has been stated already, but after buying 5 extended batteries thinking they were all dying, I bought a 1A charger on ebay. Payed about US$25 shipped, but it made all my troubles go away. A reseller sold me my 8125 with a Razr charger and I thought it would be fine but it wasn't. Use a 1A charger!!!

I keep reading about this "Wizard draining battery" issue on here. I can't say that I've EVER had a problem with my battery draining.
I keep mine on the USB sync cable overnight to charge, pull it off in the morning around 8:30 when I leave for work. At that point, the battery is at 100%. Send/receive 4 - 5 text messages, 15 - 20 minutes of phone calls, PocketWeather updating every 2 hours, emails pulled from my POP3 server every 1/2 hour PLUS intermittent internet browsing and data entry into some of my apps. . . also running WA2 in the background. When I leave work at night, I still have between 77% - 83% battery life left.
Maybe it's just that I keep it "topped off" that I'm not experiencing any battery drain throughout the day -- I don't know. But, I've had no problems with mine.

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.

Battery died in a night!!

My hermes standby time was about 2-3 days depending on my usage. but two days ago, i charged my hermes to %100 and then i slept, when i woke up in the morning, my tytn was closed, i tried to open, but it did not.. So when i pluged the charger, red light flashed and then yellow, which means my battery was fully empty and started to be charged, so it worked again.
And now it takes about 2 hours to be fully charged, but it only takes 4 hours to be completely discharged again!!! It happened so suddenly! As i know, batteries die slowly, not that much suddenly??! Do you think there could be another problem?? Or is it just my battery?? is it possible that my battery died in one night??!

I could think of a couple of things...bad battery, faulty device, or you are just doing so much with the phone that the battery is being drained. Do you keep bluetooth turned on, and wifi, and have your phone polling for new emails every 15 minutes? That will most certainly drain the battery really quick. Also, do you have the device set to automatically hibernate when not in use? I just received a new 8525 due to warranty 4 days ago, and I have not done any modding to it yet. Off the bat, I noticed that my battery life has significantly increased.

djan84 said:
My hermes standby time was about 2-3 days depending on my usage. but two days ago, i charged my hermes to %100 and then i slept, when i woke up in the morning, my tytn was closed, i tried to open, but it did not.. So when i pluged the charger, red light flashed and then yellow, which means my battery was fully empty and started to be charged, so it worked again.
And now it takes about 2 hours to be fully charged, but it only takes 4 hours to be completely discharged again!!! It happened so suddenly! As i know, batteries die slowly, not that much suddenly??! Do you think there could be another problem?? Or is it just my battery?? is it possible that my battery died in one night??!
Click to expand...
Click to collapse
There are causes depending on the battery and causes depending on the hermes:
Battery:
1> The battery has a certain lenght of life. This type of battery is very sensitive and can be charged around 300 and 500 times. Each time you connect the charger you "consume" a bit of the life. Nothing to do with memory effect but with the physic of lipo batteries. How old is your battery?
2> Lipo batteries can not be discharged below a certain voltage (3.00 volt per cell. The hermes battery is a one cell type). If this happens, you kill the battery (short capacity, impossible to charge,...) The pda is normally equiped with a circuitry able to avoid this.
PDA:
1> You can have running applications burning power. But you know that
2> In certain circumstances, the motherboard can have a problem and starts to burn your battery. This is a hardware problem which needs MB replacement. This problem is described in the maintenance manual of the hermes and is tested by service people when a hermes is refurbished.
You can try the following:
1> Fully load your battery and close all applications (No phone,nothing). See what happens in one night
2> Fully load the battery and shut the pda down. See if the battery remains fully loaded. If it is not the case, try again with the battery out of the phone. If the battery is partially/totally discharged with the battery out of the pda, the battery is dead.
3> See how much your phone consumes by using this application: http://www.acbpocketsoft.com/Products/acbPowerMeter/acbPowerMeter-Overview-2.html
Start your hermes without anything loaded (no phone,...) With backlight on (default level) and nothing running except this application, the level will be around 70mA (average). Without backlight, you would be around 25mA. At least this is what i get on mine (rom,... see my signature). This test is very dependent of the OS and the radio rom loaded
This will not repair your battery, but i hope this will help you to identify the problem

" As i know, batteries die slowly, not that much suddenly??!"
yes like humans batteries age and die after awhile
but all electronics like humans can die of a "heart attack" too

Thank you everyone is very helpful here Well i found the reason for my short stanby time, i am using pays rom 1.31 and there is a program called HSDPA switch, somehow when i uncheck the `Turn on HSDPA` box, everything seems to be normal again!! After a deep searching week, now i know the problem. I know its very odd, but when i re select that box, again my battery finishes in about 2 hours... Strange yep..

Weird Batt issue, then fixed itself!

Samsung Focus (wife has one too) I use it a decent amount during the day, check emails all the time, surf some, read kindle books, BT on my 35m commute home, etc. Batt lasted all day just fine all day. I always charge it overnight with the charger.
10 days ago or so, got up to unplug it from the charger, and for some reason it would not start, it was dead showing the batt symbol. I moved the charger to another plug (first one is fine though) and let it charge all day, and it finally took a charge. But for the following week, it would be dead by Lunch, every day. I googled "Samsung Focus Battery Problem" and found a few peeps on various sites with the same issue. Tried several things to attempt to fix it. (removing battery, plugging phone into charger, re-inserting battery) Nothing helped. I'd have to connect it to my work PC to give it enough charge for the drive home.
Stopped by ATT shop, they agreed to send me a new Batt for free. I was not warm and fuzzy thinking that alone would help, but it was worth a try (it arrived today) before actually replacing the device.
So after a week of frustration, it was on the charger late Saturday and all of Sunday. Monday (yesterday) I take it too work, and its all fine again? By evening it still had 3/4 Battery. Same today. Weird or what!
I'll save the new battery for some future day, but for now the Phone is fine. Weirdness indeed, was it the phone, or OS or what?
Anyone else run into this?

Disabled feedback
I've noticed notible battery drain especially overnight and during the day with the feedback function in the settings section enabled. When it is disabled, my phones battery last forever...ok so it last till the next day at least, I am a heavy user. The funny thing is that when you soft reset the device the feedback automatically enables itself. I don't know if this might explain your situation. It seems like from time to time my battery seems to drain fast and other days it seems like i use the phone for the whole day and barely make a dent in battery life.

Nope, all settings have stayed the same, it does check my 4 email accounts at various times, I use Cellular Data all day, Wifi only at night (home). Habits all the same. It was a wierd bug, as confirmed by others during my search. Just dang happy it fixed itself.

I ran into a similar situation for the first time today. I've had my Samsung Focus for about five months. The phone gets light usage and has been handled carefully (carrying case etc).
Last night I noticed battery level was being reported as about 20% remaining. Normally I would have expected the charge to be at about 50%. I put the unit on charge overnight and this morning the battery meter was still showing about 20% remaining - essentially no change. I moved the charger to another outlet and tried to charge the phone a couple different times. I cycled the phone on and off and tried starting the charging process with the phone off. I also tried charging from a PC USB port. Nothing worked. In fact I started getting a message that the battery power was low, turn off phone to avoid losing data etc.
I checked on the Net for known issues with Samsung Focus battery problems. There were two suggestions that seemed worth trying; one suggestion was to sync with Zune, the other was to reseat the battery. I tried syncing with Zune first. That didn't seem to make any difference. Then I reseated the battery after I had powered the phone off. When I restarted the phone, the battery meter showed the battery as fully charged.
I don't know if it's a hardware, firmware or software issue, but there were enough reported incidences to lead me to believe that there is some sort of battery related issue associated with the Samsung Focus. If I had to venture a guess, I'd guess that it might be a problem with the battery contact design.

[Q] Battery problem - suddenly turn off

It’s been a while that I have a strange problem with my batteries. I used two different batteries, both original, charged with the original charger support for the second battery (sell in bundle with it).
It’s almost two months that my phone started to turn off suddenly when the battery level is around the 30%, with both of them. I thought it was a problem related to the batteries age, since I’m using them in the last 2 years.
I tried anyway to contain the problem. As first option, I did a battery calibration. To do this I needed to discharge all the juice from batteries. I noticed that the residual 30% that I saw before the phone turn off wasn’t a fake value: it was real.
When I turn on the phone in recovery, the battery level is exactly the same that I have when phone turn off itself. Moreover, to reach 0% of battery level I have to wait a while and I can keep the screen on (always in recovery) for about an hour. On the other hand, if I try to restart the system, the phone turns off just after the Samsung logo of starts a non-sense bootloop.
Considering what I ‘ve written above, I think that my problem it’s not an hardware problem.
Does anyone have similar problems? Do you have any suggestion to avoid it?
As supplementary information, I’m running the last Italian official firmware with TWRP and root.

same problem
I am note 4 owner for 1 week now
it is an used phone (rebuy)
original rom 6.0.1 newest updates
on delivery the batterie was on 0%
first time use it shutdown at 35%
without warning
now after multiple charging and calibration
it shutdown at 20%
in 2 days I will get new Batterie and I will check again.
maybe batterie is old

Similar issue in the last week or so with my N4. Original replacement battery, 10 month old, turning off with no warning on reaching between 20-15 % charge mostly if i try to use the camera. I've put back the original battery and seems fine for now. Ordered another battery, Anker this time, just in case

Yeah Samsung carefully crafted these batteries so that they won't work any more after six months of usage of something. Mine is nine months old, the phone itself, brand new, and mine turns off at various battery percentages, sometimes its 5, sometimes its 12, I have stopped caring and I charge whenever I get a chance.

Conclusion Faulty Battery Only
Any battery poerventage is mainly determined with help of its volatage. As battery discharges this voltage also reduces. As battery grow older, we is gradually unable to handle the load as it used to when new one. Also battery life is determined by its charging and discharging cycles. It was all about basic. Now talking about note 4, being andriod fone and requres lot of battery so we usually charge it for 2 times depending on use.
The same problem was faced by me as well for note 4 at 30% it used to reboot all of sudden and thereafter bool loop (in actuality it is not as battery deoesnt handle load and it again starts to boot so no home screen). Replaced the battery with original one a month ago and now issue till date and fone lasts below 5 to 10% with 4G on and doing browsing.
So it is concluded for sure that battery problem.

Weird thing last night i experienced the same issue! And my phone is only 8 month old, i think this issue it's related to Samsung updates.. my phone did shut down in exactly 30% and started to go in bootloop i removed the battery and put it back and still the same i was about to factory reset my device for god sake ? luckily i did connect my charger before i factory reset my phone i gave it one last try and it did boot normally.
So i am not really sure what is going on.. no more updates for me unless it's a major changes
Sent from my SM-N910G using Tapatalk

Happened to me too. I think it's the battery, I tried several batteries, some cause sudden power off some doesn't.

I'm upping my thread after two months to say that I solved my battery problem changing them. I bought a new one from Samsung official store and now I'm able to do more than 4 hours of SOT and charge phone once in two days (Red Dragon Note 7 porting). Before to change, I was not able to use any Sammy ROMs, due to several reboots and disgraceful battery life.
I don't know if the battery is the guilty for everyone's problems, but I really suggest to try to change it. Just, be sure to buy an original one, because there are a lot of genuine clones, especially on e-commerce sites.
For what regards the problem itself, I think that the cause could be the use of a different charger (Samsung, but for an earphone), coupled with the extra battery kit. Unfortunately the original adaptive fast charger stopped to work a month after the phone arrived and I didn't bother about it.
So, I also suggest to use only the original cables to charge the device.
I hope that this testimony will help someone with the same problem and, at same time, I also hope that Samsung will consider to use again removable batteries to give people the opportunity to do what I did.