Develop Bugs

Charging issues

So, after my previous car journey with the Desire as navigator (forum. xda-developers. com/showpost.php?p=6075788&postcount=11) I did some investigating to find out what was happening. (In brief: I was using Google nav while on car power, and it wasn't charging.)
Firstly, the micro-USB cable shipped with the phone does not work with a car charger. I have tried with two different makes of car, and on both occasions, the power seems to be draining from the phone faster than usual. It would be great to hear from anyone else who has experienced this, or from someone who has been able to use their cable successfully in their car while having both 3G and GPS on.
After doing a bit of research on this, it seems that the Tytn had the same issue, which had something to do with the sync properties of the cable. I've tried other cables and the best i can get is to have it charging, but not enough to maintain full power while using 3G and GPS. Hopefully, this can be remedied by getting a dedicated Desire car charger, cos if not the Desire would be useless as a navigator for long journeys.
Secondly, it does not trickle charge to stay at 100% when the cable is connected, not just in a car but also on mains power. When it reaches full charge it just stops, the indicator light shines green and that's it! So, going back to the nav scenario, even if it could charge properly with delivered cable, once it reached full capacity it would stop charging and start to drain, while still showing green, either until you disconnected the charger and replaced it (if you realised what was happening), or until it died on you (if you didn't).
I can't believe this is how it was designed to behave. If so, for what reason? To preserve the battery? I would rather have a battery that trickle charged and lasted half as long, than a battery that didn't, cos I find the latter to be more of a day to day nuisance.
I'm on the old tmo ROM. It would be interesting to know if people with other ROMs experience anything different.

Broken USB/charging port?

I'm not sure if this is the right place to ask this, please excuse my ignorant.
I have an EVO that won't charge. I've read a lot from Google search results that this is a common problem among many users. However, the port seems to be working, because my computer will recognize the phone and storage when I plug it in. The charge led will come on, and the indicator on the phone will say that it's charging, but the phone is actually only discharging while plugged in. Eventually the led will turn itself off, and the phone stops telling me that it's charging when the battery is down to its last drop.
I hope that someone with similar problem can help me with fixing this, or if anyone cause tell me if it's possible to fix? I want to send it in to HTC since I think the phone is under warranty, even if I don't have the protection plan from Sprint? The problem is the touch glass is cracks, and I don't know if they'll fix the USB port without saying that I broke it and won't cover that under the warranty. I want to buy a new screen and replace the broken one, but if I open up the phone it would void the warranty as well...
So I'm stuck with a discharging phone, cracked screen, and having to carry around 3 separate batteries everyday, and I have no idea what step I need to take.
Please help?

Have you tried plugging it into another charger? It may just be the charger that is screwed up. If this behavior pattern is consistent across multiple chargers then you may want to talk to Sprint to see what options you have.

Concordium said:
Have you tried plugging it into another charger? It may just be the charger that is screwed up. If this behavior pattern is consistent across multiple chargers then you may want to talk to Sprint to see what options you have.
Click to expand...
Click to collapse
Doubt it's the charger as it was stated that the computer connection works - should get a bit of a charge from that. I agree that a Sprint visit is due.

Just went through this myself! Would plug my phone in before bed and wake up with the phone at 2% or so. Thought it was the battery- so i took my battery to have the sprint store check it, they did say it was bad. So i bought 2 batteries off ebay.
I got the batteries and still had the issue. So then I took my phone to the sprint store and had them check the micro-usb port. They said it was fine and they cleaned it out cause dirt/dust was in it. Still had the problem..
So I bought a new micro-usb cable of monoprice (still using the same wall charger) , and that solved the issue! Had a bad cable. Now my phone charges super quickly in matter of 4hrs.

It could still be the charger. The USB cable sends data and power through different pins. So a bad cable could still transfer data while not pushing a charge.
Sent from my PC36100

It's gotta be the port happen to mine and I was able to get it fix as long as the port was still attached to the motherboard, if its not attached then have to go thru the insurance.
EVO with Identity Crisis

I was able to connect to my computer and send data just fine with the old (broken) usb cable.

I've tried three different cable and a car charger, same result; they all say the phone is charging but it only gets discharged. USB/storage connection works. Last time the Sprint store said the battery is faulty, but I have 3 different ones and neither will get charged with the phone plugged in, an external charger will work.

kzn said:
I've tried three different cable and a car charger, same result; they all say the phone is charging but it only gets discharged. USB/storage connection works. Last time the Sprint store said the battery is faulty, but I have 3 different ones and neither will get charged with the phone plugged in, an external charger will work.
Click to expand...
Click to collapse
Definitely sounds like a port issue then. If you return to Sprint and review what you've done, as well as the result of your previous trip, then they should be able to take care of you. If they try to tell you it's the battery again just stand your ground. Good luck.

I had a similar issue. I tried everything. It wasn't until I found my HTC cable that it started charging again. I work in IT and tried cables from everything I could get my hands on (blackberries, external drives etc. ) The cable that came with my phone was the only thing that worked.
Sent from my PC36100 using XDA App

Had same issue except couldnt sync. Eventually couldnt charge at all...Had port replaced ans can charge all day but no sync still....sucks but at least I can charge.

mexigga said:
Had same issue except couldnt sync. Eventually couldnt charge at all...Had port replaced ans can charge all day but no sync still....sucks but at least I can charge.
Click to expand...
Click to collapse
If you replaced the port yourself, I would love to know how to do it!
Took the phone back to Sprint and they said there's nothing they can do. I don't have the protection plan so I couldn't even pay the $100 to get it replaced (although I probably wouldn't as I can upgrade my contract and get a new phone soon). They also told me that HTC wouldn't cover it under their warranty because the screen is cracked and they will blame that on me for misused. I tried to check the warranty policy on HTC, but the page is not even available. Does anyone have experience dealing with HTC? I bought a replacement screen, I'd like to replace the screen but don't want to open up the phone if there's a chance HTC will fix the USB port...

HTC EVO 4G Won't - Stopped Charging Battery Issue
Hey Guys,
Two nights ago I woke up to an EVO that was plugged in with a Cellet
extractable charging cord, as it is just about every night. But, the phone was
still showing that it was charging the battery, animation with lighting bolt,
at only 50% charged after about 6.5 hours of charging. Hmmm....
The latter after trying to charge in the coffee shop first with Cellet chord in the
wall then a portable 3500mah solar portable charger; the phone not seeming to
charge at or past 50% charged.
My EVO is rooted but still with the stock ROM and the gingerbread 2.3.3 OTA
update. The battery is a Seido 1750mah and SetCPU is at 245 - 998mhz. The
phone has only been rooted for a few weeks, but I don't see where rooting
would interfere with battery charging.
I've pulled the battery out, several times to no avail. Switched back to the
stock battery, same results. However, if the battery is less than 50% full
the phone will charge the battery to 25% or 50%, weird. If the battery is
at 75% or more full, the phone will top off the charge to a green LED at 100%,
sometimes. Sometimes it won't fully charge the battery. Weird.
I read different posts regarding poor USB chords so I pulled out the stock
micro USB to USB, a charge only chord I figured, and am trying to top
off the Seido battery, which it seems to be doing as it's now full green but
still charging as the animation shows the bolt in the battery and the LED
is still orange.
If put the batteries in the Seido wall charger, the thing the size of a deck
of cards, both batteries fully charge.
I also use Screen Off by Iwashi Soft. That app has worked pretty well with just
a little funkiness now and then. However, while plugged in, I hit the power
button, instead of the home button to turn on the home screen. The phone
wouldn't open to any screen nor would turn on or off. So I ended up
yanking the battery to turn it off then reinstalled battery and turned phone back
on. I don't know if that had any effect on the charging issue, but I took
the icon off the homescreen and am using the power button only, for now.
I don't think both batteries are faulty at the same time at this point. I
don't know if the screen off app caused some wake issue that interferes with
charging the battery.
I do know that when plugging in the phone to charge there's a bit of clunkiness
initially as the phone locks for a second before allowing use for screen or app
and that's always been the case since the gb update. Also, the LED doesn't
always turn green from amber when fully charged with the screen off until
you reboot or use the phone in some way while still plugged in. So there is
some kind of wake issue in the stock ROM. But the latter has never stopped
the battery from charging.
I do know that Plume, the twitter app, started acting clunky with not updating
in the background unless I opened the app at least once after a reboot. But
I don't know if the latter is a wake issue.
Battery still seems normal. Heavy normal use, lots of SMS, tweets, Pulse reading,
Dolphin browsing, I'll kill 50% or more of the battery in 4+ hours. Otherwise, the
phone mostly in standby with periodic email and twitter reads, the battery lasts
all day or more than 24 hours. But the latter rarely happens anymore because I'm
a user.
The battery just went full charge with the stock charging cable just now.
This morning, I woke up with a dead phone, auto shutoff even though it was
plugged in which I did after solitaire and before going to sleep; as a charging
test.
I don't know if it's the phone or the Cellet retractable cord or both that's
stopping the battery from fully charging normally and consistently. I'll need
to get another data-charge combo chord and do more testing; and a new ROM.
Any ideas anybody?

try a new rom and also try using the stock charger and usb cable. Check inside your usb port on your phone for dust as well. Also go into recovery and wipe your battery stats. In the wipe menu for amonRa and under advanced (maybe here, i dont use cwm on my phone) in clockworkmod. also wipe your dalvik-cache just to clear any issues you may have, restart and give it a test. good luck

I just bought a phone with a broken charger port. Broke clean off the board, so my next step is to try to get liquid solder and stick it to the board. Did you take ur phone apart to see if the port is lose?

So I used the stock USB charging chord. Sure enough, it charged the phone.
Then I tried the portable charger at the coffee shop, worked. So the Cellet retractable
chord obviously had a short or something damaged/shorted for the charging part of
the cable after a year + of use and abuse.
What I don't understand, and haven't researched, is why there are charge only
chords; the stock USB HTC chord charges the phone, but the PC won't recognize
the phone's Micro SD card or the phone as an external drive. I presume the duo use
chords have a data path as well as a charging path. And yes, I know to switch the
phone from charge only to disk drive. The Cellet chord would provide the PC with
recognition for the phone's drive.
Considering the latter, what I'm not sure of, and haven't researched, is why when
the phone stopped charging, the chord eventually stopped charging, the phone
status still showed it as charging; the amber LED light on and the battery icon
in charging animation with white bolt showing? I presume that the charging path
still triggered the charging status, except once when I turned the screen back
on the battery icon was not animated and the white bolt not showing so I unplugged
the chord then plugged it back in where the battery icon animation continued.
Fortunately, or not, this forum returned 600+ results for 'battery not charging' and after
sifting through a few, the charging chord was mentioned which prevented a Sprint trip
and me contacting Seido; thankfully.
So I think manufacturers and ROM/kernel developers should visit this issue as a chord
that actually is not charging, or charging at an absurdly low rate, should trigger some alert
and not show a battery icon animation that appears to be charging normally.

USB charging power vs battery drain. Measurements inside!

I posted this a week ago elsewhere but thought you guys might find it of interest too.
After personally experiencing having my phone (A Verizon GN) end up LESS charged than I started out with on a 1 hour trip with navigation on while plugged in, I decided to run some tests.
The first was to see how much power the Galaxy Nexus could draw from the USB connection. This turns out to be about 4.5W. (0.9A at 5V)
(Edit: Yes I tied the data lines together so the GN knew it was hooked to a charger and not a PC)
I ran all kinds of applications, benchmarks, turned on all the networking, GPS. Just sitting there idle or in sleep mode it only drew 3.5W but I could push it up to 4.5W which is fairly close to the max most USB adapters can supply. My PS can deliver 8W so it had plenty of power to offer. So no matter how powerful your charger is, the GN simply won't draw more than 4.5W. Forget about those 3A chargers.
The next test was a bit trickier. I wanted to measure how much power the GN was drawing from the battery. Tiny contacts and an expensive phone made me a little cautious but I figured out a fairly safe way of doing this, and here are the results.
In sleep mode it only drew 0.04W with occasional spikes of 1W.
Powered on and idle it averaged 3W.
Running a CPU benchmark it stayed at 4W.
Downloading a large file over WiFi got a steady 4.2W.
Now the real test... Google Maps.
This varied a LOT. Minimum was 4W with some steady peaks of 5.1W!
That seems to be the problem. The GN can draw more power from the battery than the charging system can provide. In the real world the power draw is going to be worse because of all the switching of cell towers and map data downloading. I wasn't about to take my very delicate wiring job on the road, so will just have to guess at the final numbers, but just sitting still was enough to overpower the charger.
I doubt this can be a software fix where a hardware register can be changed to let the charging system draw 1.5A or something.
This also means that a 2A or 3A power supply is not going to help. As long as you have a 1A supply, that's all the GN will take. Do make sure it's wired right or it will only draw 0.5A, and be warned some USB jacks on stereos and computers might only give you 0.1A.
Now on to something else... the AMOLED screen! Does keeping it black really save power? The answer is... sort of!
I ran several tests with the device in airplane mode and just showing a solid color on the screen on the dimmest, and brightest screen settings.
Dim black: 1.8W
Dim white: 2.0W
Bright black: 1.9W
Bright white: 2.9W
For extra fun...
Bright Red: 2.5W
Bright Green: 2.6W
Bright Blue: 2.8W
So if you run the screen at the dimmest setting, it really doesn't matter what the screen is showing. If you run it at the brightest... then white really does draw more power. A lot more. If you can set Google Maps to display the screen mostly black, that could save a significant amount of power during navigation.
I was unable to find a way of turning off the display without putting the phone to sleep, so no idea how much of that power shown above is due to the screen and how much to running the CPU and all the other functions.
Anyway, I still have my spare battery rigged up so if you have any other good ideas for tests I can try them out.
Summary... under extreme battery drain conditions even the best USB charger can't keep up, but all you need to do is reduce the power draw a small amount and you will be back in the positive. Make sure your charger is supplying a full amp. Cheap chargers and cables without the data lines shorted will only give 0.5A and that is by far NOT enough to keep a GN charged while doing anything at all.

The screen measurement is awesome, good to see some real numbers (even if its not 100% accurate).
Also some things you do can still be done with the screen off. Like downloading a large file - or playing music. You could easily compare downloading a file and/or playing music with screen on or off to see the difference. Another interesting thing would be downloading via wifi vs download on 3g and LTE

wonshikee said:
Also some things you do can still be done with the screen off. Like downloading a large file - or playing music. You could easily compare downloading a file and/or playing music with screen on or off to see the difference. Another interesting thing would be downloading via wifi vs download on 3g and LTE
Click to expand...
Click to collapse
+1
And maybe also playing a HD (1280x720) video in Dice Player with full brightness...

It's important to point out that when your device uses more battery than it is able to recharge while being charged at the same time, then you are prone to sleep of death problem. I had exactly that happen on a ship to Finland. I only realized it the next day, once my battery ran down to percentages it was while I was on a ship and it froze. After reboot, I had lost up to 20% battery.
So I would avoid using the device while it is charging, but battery still runs down.

kristovaher said:
It's important to point out that when your device uses more battery than it is able to recharge while being charged at the same time, then you are prone to sleep of death problem.
Click to expand...
Click to collapse
My previous Android phone had this issue. If it got discharged too far it would shut down and wouldn't charge back up. I had to manually hook up power to the battery to kick start it. In fact... my former phone before that (Windows Mobile!) had the same issue! Seems to be a common design flaw.

iansmith said:
I posted this a week ago elsewhere but thought you guys might find it of interest too.
After personally experiencing having my phone (A Verizon GN) end up LESS charged than I started out with on a 1 hour trip with navigation on while plugged in, I decided to run some tests.
The first was to see how much power the Galaxy Nexus could draw from the USB connection. This turns out to be about 4.5W. (0.9A at 5V)
(Edit: Yes I tied the data lines together so the GN knew it was hooked to a charger and not a PC)
Click to expand...
Click to collapse
Saw this when you posted it "elsewhere" a week or so ago. Definitely might get more love here though. I love the idea of people or google developing more black background apps and a night mode of Maps / Navigation and Gmail. Seeing these numbers it really would make a difference.

Very interesting write up! I have a question though...you mention shorting the data lines to get a full amp. Is there a tutorial somewhere that explains how to do this? I will be taking a long road trip (like 3600 miles round trip long) this summer and will be using GPS a lot so I would sure like to do that. I would be running a Rocketfish car charger-to-USB adapter and using a USB cord plugged into that and then run that to the car dock. Thanks.

Accord281 said:
Very interesting write up! I have a question though...you mention shorting the data lines to get a full amp. Is there a tutorial somewhere that explains how to do this? I will be taking a long road trip (like 3600 miles round trip long) this summer and will be using GPS a lot so I would sure like to do that. I would be running a Rocketfish car charger-to-USB adapter and using a USB cord plugged into that and then run that to the car dock. Thanks.
Click to expand...
Click to collapse
http://www.amazon.com/gp/product/B003VYBCAY/ref=oh_o00_s00_i00_details
These cables don't have a data line, it'll get you the full amp. Big difference when I use it in my car vs a normal cable.

When we use the provided cable and Samsung USB adapter we still get 1A correct?
Sent from my Galaxy Nexus using xda premium

arasky said:
When we use the provided cable and Samsung USB adapter we still get 1A correct?
Click to expand...
Click to collapse
Yes, the provided adapter gives out a full 1 amp and shorts the data lines so the phone knows it can draw as much current as it can handle.

[Q] A100 Powers OFF when charger is connected.

Recently successfully replaced the LCD screen on my Acer A100. Device worked fine for some time after that repair. Wanting to get a secondary charger for use at work I went to radio shack. Sales "tech" tried several different adapters, found one that fit inside he port, but wiggled. She plugged it in but device wasn't showing a charge. Decided to order one from online. At home the device still would not charge with its own charger. Thought maybe the charger was faulty. Ordered two more. Still the A100 turned off when charger plugged in. Figured tech had burned out the a/c port. Ordered and installed a new one. Still A100 turns off immediately when charger is plugged in. I have 3 chargers now - same results with all 3. Have now ordered a docking station to utilize (hopefully) charging ability through 40 pin connector.
If this connection creates same shut down am I looking at a battery replacement? AM sitting at 33% battery level now, device shut down completely.
Acer wants 199.00 prepaid to submit to them for repair - this is more than I paid for the device! Not really an expense I am willing to pay if all it needs is a battery. There is no erratic behavior , just immediate shutdown as soon as a charger is connected. Any ideas?

PocketFuzz said:
Recently successfully replaced the LCD screen on my Acer A100. Device worked fine for some time after that repair. Wanting to get a secondary charger for use at work I went to radio shack. Sales "tech" tried several different adapters, found one that fit inside he port, but wiggled. She plugged it in but device wasn't showing a charge. Decided to order one from online. At home the device still would not charge with its own charger. Thought maybe the charger was faulty. Ordered two more. Still the A100 turned off when charger plugged in. Figured tech had burned out the a/c port. Ordered and installed a new one. Still A100 turns off immediately when charger is plugged in. I have 3 chargers now - same results with all 3. Have now ordered a docking station to utilize (hopefully) charging ability through 40 pin connector.
If this connection creates same shut down am I looking at a battery replacement? AM sitting at 33% battery level now, device shut down completely.
Acer wants 199.00 prepaid to submit to them for repair - this is more than I paid for the device! Not really an expense I am willing to pay if all it needs is a battery. There is no erratic behavior , just immediate shutdown as soon as a charger is connected. Any ideas?
Click to expand...
Click to collapse
If its doing it on 3 chargers its sounding more like a board charging circuit issue. You could remove the battery and then see if it behaves normally, that'll be battery or board right there. Or if you have a multi meter test output at the battery connector.
Tapatalked from my HTC DNA - ReVolt

Tried connection without battery
pio_masaki said:
If its doing it on 3 chargers its sounding more like a board charging circuit issue. You could remove the battery and then see if it behaves normally, that'll be battery or board right there. Or if you have a multi meter test output at the battery connector.
Tapatalked from my HTC DNA - ReVolt
Click to expand...
Click to collapse
Don't have a multi meter. Tried connection via new docking station, got same response: device immediately shut off. Tried your suggestion, disconnected battery connected to docking station, got immediate shut off. Same with charger via a/c port. :crying: Mainboard is out? But Device responds and acts normal when in battery mode - or is this isolated to the charging circuit part of the main board?
Thanks for the suggestion!

PocketFuzz said:
Don't have a multi meter. Tried connection via new docking station, got same response: device immediately shut off. Tried your suggestion, disconnected battery connected to docking station, got immediate shut off. Same with charger via a/c port. :crying: Mainboard is out? But Device responds and acts normal when in battery mode - or is this isolated to the charging circuit part of the main board?
Thanks for the suggestion!
Click to expand...
Click to collapse
Sounds like its tripping on the charger circuit and cutting out, like a breaker tripping. IMO look carefully for any shorts on the boards, even something stupid like dog hair can cause strange things to happen. A good blasting with air wouldn't hurt either. It could even be the dock port as it does charge from there and is subject to debris also.
Tapatalked from my HTC DNA - ReVolt

one more try
pio_masaki said:
Sounds like its tripping on the charger circuit and cutting out, like a breaker tripping. IMO look carefully for any shorts on the boards, even something stupid like dog hair can cause strange things to happen. A good blasting with air wouldn't hurt either. It could even be the dock port as it does charge from there and is subject to debris also.
Tapatalked from my HTC DNA - ReVolt
Click to expand...
Click to collapse
Thanks again for more suggestions. Yup I have been over the board and all connections with a looking glass. Changed out the A/C dock port. My suspicion is that when the Radio Shack tech powered up the "Almost fits" adapter it blew whatever breaker the board has.
When I had it connected to the docking station with the battery disconnected, it powered on, then immediately shut off. So this definitely sounds like a "blown fuse". I completely disassembled and reassembled it again (except for the LCD screen) and checked all connections and plugs. Nothing visible to indicate a burnout or cross connection.
No odd smells either. Probably some teensy weensy transistor or resistor or something. I am not an electrician - just good at R & R.
Another visit to ebay and I am parting with 50 bucks for a "factory refurbished" motherboard. In the mean time, my beloved tablet will await further surgery. Will keep you posted. Board should be here by Saturday. I hope so - battery is down to 27%. Thanks again for weighing in!

PocketFuzz said:
Thanks again for more suggestions. Yup I have been over the board and all connections with a looking glass. Changed out the A/C dock port. My suspicion is that when the Radio Shack tech powered up the "Almost fits" adapter it blew whatever breaker the board has.
When I had it connected to the docking station with the battery disconnected, it powered on, then immediately shut off. So this definitely sounds like a "blown fuse". I completely disassembled and reassembled it again (except for the LCD screen) and checked all connections and plugs. Nothing visible to indicate a burnout or cross connection.
No odd smells either. Probably some teensy weensy transistor or resistor or something. I am not an electrician - just good at R & R.
Another visit to ebay and I am parting with 50 bucks for a "factory refurbished" motherboard. In the mean time, my beloved tablet will await further surgery. Will keep you posted. Board should be here by Saturday. I hope so - battery is down to 27%. Thanks again for weighing in!
Click to expand...
Click to collapse
To bad considering the crappy battery life so its not like you can charge some other way and swap the battery around.
Example, I have a bricked unit that charges but doesn't otherwise work, so I mean using my bricked board to charge it and the non charge board for use. The a100 isn't really a good setup for swapping around lol. I may actually be interested in that board now that I think about it...
Tapatalked from my HTC DNA - ReVolt

hmmm an idea for the brave
pio_masaki said:
To bad considering the crappy battery life so its not like you can charge some other way and swap the battery around.
Example, I have a bricked unit that charges but doesn't otherwise work, so I mean using my bricked board to charge it and the non charge board for use. The a100 isn't really a good setup for swapping around lol. I may actually be interested in that board now that I think about it...
Tapatalked from my HTC DNA - ReVolt
Click to expand...
Click to collapse
If I could figure out a way to charge the battery OTHER than through the board - I would! Which got me to thinking. One COULD get a second rear panel, cut a door in it, install teensy weensy hinges or create a hinge with cloth tape. then make some sort of extension cord for the battery charging cord, plug it in to the "external" charging board and refill the battery that way.
With a working board and the right know how, one could just extract the board, put it in a box and make a charger out of it too.
But that is just my brain rattling around ideas. :silly: Hopefully this new "refurbished" mother board will do the trick and I will learn my lesson and NEVER let a sales "tech" attempt trial adapters! at 10 minutes to 9pm tonight it was in Texas....
Until I CANNOT use it, I didn't realize how MUCH I used this little tablet!

now it blinks orange?
Oh fer cryin out loud! The motherboard has arrived, I have installed it. Can plug n the charger and drop it onto the docking station and now I get the same response for both charging options: Charge LED lights up orange solid for just about 60 seconds, then begins blinking. Device doesn't respond when power button is pushed UNLESS it is plugged in, and then it just sits at the "ACER" screen.led changes to blue.
OK, wait a minute, this is the third time I have turned it on while plugged in. Acer screen has moved to Android, Device has started. Battery icon showing a question mark. 23%
Turned off, turned back on, now battery shows only 3%????
Think I saw something on the forums about that. will go on a quest.

Finally charging again!
Shhh, don't want to disturb my device....
Found folks on other forums with similar issues of the Acer A100 tablet showing only 3% charge. I removed and inserted the charging pin several times, the device would show solid orange led for about one minute then start blinking. Turned the device on when charger plugged in, unlocked the screen, then with device still plugged in I shut it down completely. Removed charger. Plugged it back in and so far the led is staying at solid orange.
Please keep your fingers crossed for me! This has been quite the roller coaster ride of discovery. Will leave it be for overnight (what is left of the overnight). Then peek at it in the morning. With any luck at all it will have accepted a full charge and I will be greeted with a functioning device! I almost want to learn a new trade..
well now that is weird, got up this morning to a nice blue charge indicator. Yay! Unplugged charger, press on button, hold, hold, hold, hold, hold and device does not start up. Dang it! Plugged it back in, led went solid orange, then started blinking again! Pressed and held on button. Device came on. battery meter shows 3% and a question mark! HUH?
have device plugged in, settings of course show android version 3.2.1 for this motherboard. Guess I need to upgrade it to ICS maybe that will resolve this weird battery issue? Hope soemone here has ideas, feels like I am soooo close to resolving this.

I read the upper posts.
Now I want to share my experience regarding battery load sharing:
I have allso problems to charge the battery.
I have on my tab, for example, 40% of battery power.
I turn my tab off.
When i plugged the charging cable in it shows me the orange led for load.
After two hours or more i turned the tab on.
It shows me not more than 40% but only 37% or so.
So not loaded. This was a bad sign....
I dont no was happend.
I get a little bit nervous but when the tab not get power it doesnt work....
After two/three hours the battery was empty.
Now i can only start my tab while plugged the charging cabel in because the battery will not load.
I have tried several options to find a solution (disconnect the battery, install a new battery, etc. ....).
My solution was fairly straightforward:
I open the tab. Look where the power comes in.
Of the charging socket go four (two red and two black) cable to the motherboard and from the motherboard it goes seven (two red, two black and for me not so important three other coloured cabels) to the battery.
I organized four thin wire and soldered it from the charging socket directly to the battery (of course red to red black to black ).
The result:
When i plugged the charging cabel in while android is running i get no information to load and it shows me not to.
But when i turned the tab off and on again it shows me that it has the battery charged :fingers-crossed: .
After on night while the charger plugged in the battery is fully loaded!!
And of course i get the information in android the discharging of the battery but this is an normaly thing!
So, the problem to load the battery for me is solved .
I hope it helps a little bit for everyone!

frischeis said:
I read the upper posts.
Now I want to share my experience regarding battery load sharing:
I have allso problems to charge the battery.
I have on my tab, for example, 40% of battery power.
I turn my tab off.
When i plugged the charging cable in it shows me the orange led for load.
After two hours or more i turned the tab on.
It shows me not more than 40% but only 37% or so.
So not loaded. This was a bad sign....
I dont no was happend.
I get a little bit nervous but when the tab not get power it doesnt work....
After two/three hours the battery was empty.
Now i can only start my tab while plugged the charging cabel in because the battery will not load.
I have tried several options to find a solution (disconnect the battery, install a new battery, etc. ....).
My solution was fairly straightforward:
I open the tab. Look where the power comes in.
Of the charging socket go four (two red and two black) cable to the motherboard and from the motherboard it goes seven (two red, two black and for me not so important three other coloured cabels) to the battery.
I organized four thin wire and soldered it from the charging socket directly to the battery (of course red to red black to black ).
The result:
When i plugged the charging cabel in while android is running i get no information to load and it shows me not to.
But when i turned the tab off and on again it shows me that it has the battery charged :fingers-crossed: .
After on night while the charger plugged in the battery is fully loaded!!
And of course i get the information in android the discharging of the battery but this is an normaly thing!
So, the problem to load the battery for me is solved .
I hope it helps a little bit for everyone!
Click to expand...
Click to collapse
I really hope other isn't any voltage or amperage changes needed of that can blow that battery up real quick, plus it can't stop charging, you'll need to monitor that yourself.
Thanks for the info though, it does appear to be yet another somewhat common bug these have that can be addressed by a user if they feel the need to.
Tapatalked from my HTC DNA - ReVolt

Not switch the charger off when the battery is full?
I think the charger there is a shutdown would otherwise overload the battery, right?
Or do this the motherboard?
Anyway, for me the tab is fully working now and if the battery is broken, it is not a big expense to replace them .

frischeis said:
Not switch the charger off when the battery is full?
I think the charger there is a shutdown would otherwise overload the battery, right?
Or do this the motherboard?
Anyway, for me the tab is fully working now and if the battery is broken, it is not a big expense to replace them .
Click to expand...
Click to collapse
I was saying the board is in charge of cutting the battery charge off, not the charger itself so maybe keep an eye on it, its a good way for an explosion or fire.
Tapatalked from my HTC DNA - ReVolt

A100 tablet not charging still
Frischies is much braver than I am.
Wiring the battery direct to the charging port- I would definitely worry about burning up the battery or causing a fire - especially while charging when I sleep. I have had more than my fair share of run ins with fire.
The Motherboard I ordered arrived and I installed it. It was listed as "factory refurbished", but unfortunately will not accept a charge. I thought it had charged overnight at one point, but all it does is blink orange and the battery reads 3% or 0%. Turning the device off when plugged in and doing a reset has not helped. The vendor has been gracious to do a replacement, so I will follow that route until I get a working motherboard.
I have discovered that the docking station will be a welcome addition to my Acer tablet paraphernalia! Although this model docking station isn't the one that allows HDMI throughput, it still will be nice for music, and other media. A Bluetooth keyboard and the tablet will offer yet another computer tool!
First things first though, get the tablet to accept a charge - until then it is a really wide flat paper weight! I am getting VERY adept at opening the tablet and removing the internals!

It is working again! The motherboard sent was defective but vendor issued an RMA. Received the replacement yesterday, installed it last night. Charged over night and fully functional this morning! Ahhh it feels good to have my little buddy back again. Didn't realize how much I used it, until I couldn't use it! Thanks to all for the help.
Sent from my A100 using xda app-developers app

Phone all of a sudden not charging

So suddenly my note 2 running tweaked has started charging real slow then all off a sudden will not charge at all. Ive tried several chargers and now have noticed with or without the battery i can enter only download mode and it will show up on odin but not charge the battery. as soon as i try to restart instead of entering download mode it will try and start but just shut down. Does anyone have any thoughts or ideas or has seen this issue? thanks. so considering it will enter odin is it possibly a battery issue,although it will only go into download mode nothing else? thanks again

The issue is not the ROM, I can tell you that much.
I would suggest flashing the stock kernel. If that does not help the issue, you need a new battery. 100% positive. I say that because you claim you have tried other chargers.

i cant check but can anyone else confirm the phone wont work without battery in with it plugged into laptop

Rayn1328 said:
i cant check but can anyone else confirm the phone wont work without battery in with it plugged into laptop
Click to expand...
Click to collapse
It doesn't. You have to have the battery in, even when plugged into a wall charger.
Sent from my SGH-T889 using xda app-developers app

kintwofan said:
It doesn't. You have to have the battery in, even when plugged into a wall charger.
Sent from my SGH-T889 using xda app-developers app
Click to expand...
Click to collapse
awesome i am currently only 6500 miles from home in south korea.......seems like samsung is pretty popular here. lol everyone has a note2 here i swear. gonna find a battery and hopefully it solves the issue.

I'm having a sort of similar issue.
This is a brand new issue for me. I've been rooted running Jedi X-14 for about 2 months or so now. I went on vacation to Guatemala and that's when the issues started arising. I brought along the same charger I used here back in the states, and it worked fine the first day or two, then new things started happening. It started taking about 5-10 seconds for the Note to realize the charger was plugged in. Then when the charger was plugged in the bottom of the screen (actual touch screen) started becoming a bit unresponsive and laggy. The phone no longer charged as fast as it used to. Then sometimes I would plug it in, and it wouldn't actually charge...it would make the noise recognizing something has been plugged in, but would say "Please Connect charger". If the phone completely died this was almost a guarantee and I would need to plug/unplug/plug until the dead battery icon changed into the charging battery icon.
I'm back in the states now, haven't had a chance to reset/install a new rom or anything, and my phone earlier tonight went dead. Spent a good 2 minutes fiddling with it, it eventually turned on, said no charger was inserted, and turned off. Since then I have not been able to get it on. As soon as I plug it in it shows dead battery, and very rarely it will start to boot up the battery charging symbols (battery symbol with green bar moving), but even if it did, it would do it for 1-3 seconds and shut off.
I'm able to get into Recovery Mode/Download Mode, and the phone will actually stay on as long as it's on the charger (wall outlet).
It's not the battery, as I have another official Note 2 battery (at work currently, and I switched them the other day, to see if the other battery was the issue). Also I have different USB cords/chargers, and they all give the same issue.
From CWM Recovery I was able to wipe Cache/Factory reset the phone, but it still does not boot up. Any advice is appreciated. I can probably get it on when I get my other battery which is near fully charged at work, but I won't be at work for another 2 days or so, so I'm looking for a fix so I can have a working phone in the meantime. Thanks in advance.
EDIT: I was able to charge the phone while in recovery mode to about 10%...It then turned on...after a few minutes however the charger just stopped charging the phone. Tried another charger same thing. Tried both chargers with an s3 I have, and they work perfectly fine. Even going back to recovery mode won't charge it anymore.

I was on vacation in Central America and the same thing happened to me. It works fine in the states now.
Sent from my SGH-T889 using xda app-developers app

Bkenigma said:
I'm having a sort of similar issue.
This is a brand new issue for me. I've been rooted running Jedi X-14 for about 2 months or so now. I went on vacation to Guatemala and that's when the issues started arising. I brought along the same charger I used here back in the states, and it worked fine the first day or two, then new things started happening. It started taking about 5-10 seconds for the Note to realize the charger was plugged in. Then when the charger was plugged in the bottom of the screen (actual touch screen) started becoming a bit unresponsive and laggy. The phone no longer charged as fast as it used to. Then sometimes I would plug it in, and it wouldn't actually charge...it would make the noise recognizing something has been plugged in, but would say "Please Connect charger". If the phone completely died this was almost a guarantee and I would need to plug/unplug/plug until the dead battery icon changed into the charging battery icon.
I'm back in the states now, haven't had a chance to reset/install a new rom or anything, and my phone earlier tonight went dead. Spent a good 2 minutes fiddling with it, it eventually turned on, said no charger was inserted, and turned off. Since then I have not been able to get it on. As soon as I plug it in it shows dead battery, and very rarely it will start to boot up the battery charging symbols (battery symbol with green bar moving), but even if it did, it would do it for 1-3 seconds and shut off.
I'm able to get into Recovery Mode/Download Mode, and the phone will actually stay on as long as it's on the charger (wall outlet).
It's not the battery, as I have another official Note 2 battery (at work currently, and I switched them the other day, to see if the other battery was the issue). Also I have different USB cords/chargers, and they all give the same issue.
From CWM Recovery I was able to wipe Cache/Factory reset the phone, but it still does not boot up. Any advice is appreciated. I can probably get it on when I get my other battery which is near fully charged at work, but I won't be at work for another 2 days or so, so I'm looking for a fix so I can have a working phone in the meantime. Thanks in advance.
EDIT: I was able to charge the phone while in recovery mode to about 10%...It then turned on...after a few minutes however the charger just stopped charging the phone. Tried another charger same thing. Tried both chargers with an s3 I have, and they work perfectly fine. Even going back to recovery mode won't charge it anymore.
Click to expand...
Click to collapse
Maybe its the oversea power grid? If you are using just a wall converter (US to Wherever) and still using your american AC adapter, you have to realize the power grids arent as clean or as constant as they are here in the states and can actually ruin an AC charger. Can you charge it via your PC using the USB cable? I know the stock Kernel has a near trickle charge though but still, it might be enough to charge it for use.
Something to keep in mind, the S3 has a lower power draw than the note 2. The screen alone on the note2 can draw more than 600Mah which is more than a standard USB adapter can output. Thats not counting the draw on the battery from cpu frequency or radios.
Also I can also assure you that bad power grounds cause a touchscreen to act up. I have an iconia a500 that acts up in the same way with a generic charger, yet, with the stock charger it works fine. It has less power filtering in its charging circuitry. I still have ungrounded outlets in my house which cause the issue. Too much interference.
Just a guess as both you and ryan are experiencing similar issues and are both away from home.
Sent from my ASUS Transformer Pad TF300T using xda app-developers app

pyraxiate said:
Maybe its the oversea power grid? If you are using just a wall converter (US to Wherever) and still using your american AC adapter, you have to realize the power grids arent as clean or as constant as they are here in the states and can actually ruin an AC charger. Can you charge it via your PC using the USB cable? I know the stock Kernel has a near trickle charge though but still, it might be enough to charge it for use.
Something to keep in mind, the S3 has a lower power draw than the note 2. The screen alone on the note2 can draw more than 600Mah which is more than a standard USB adapter can output. Thats not counting the draw on the battery from cpu frequency or radios.
Also I can also assure you that bad power grounds cause a touchscreen to act up. I have an iconia a500 that acts up in the same way with a generic charger, yet, with the stock charger it works fine. It has less power filtering in its charging circuitry. I still have ungrounded outlets in my house which cause the issue. Too much interference.
Just a guess as both you and ryan are experiencing similar issues and are both away from home.
Click to expand...
Click to collapse
I figured maybe my charger from the US I had brought to Guatemala had broken...when I got back to the States, I bought a Micro USB charger from one of those vending machines in the airport (says it's a 5V2 1A wall charger- 2.1A output)... Having tried different chargers, batteries and outlets, I can only assume it's something with the Hardware no? I was able to reset the phone, and installed Jedi Master 14 to replace Jedi X14, to see maybe if something with the ROM was faulty, and that didn't help.
Phone no longer charges in CWM Recovery like it did last night. Phone turns off, and has that dead battery symbol on the screen (empty battery with a loading circular icon on it). It will no longer go any further.
Tried charging thru my computer to the same effect... worst case scenario I have to do a warranty exchange, however I'd like to avoid it as I believe T-Mobile no longer offers the White Note 2 and I don't like the titanium colored one, I'd have to un-root/stock rom/Triangle Away, and then re-root new phone (I'm a complete N00b at this stuff so it's time consuming for me to do), and honestly I'd just to avoid it if at all possible.

Bkenigma said:
I figured maybe my charger from the US I had brought to Guatemala had broken...when I got back to the States, I bought a Micro USB charger from one of those vending machines in the airport (says it's a 5V2 1A wall charger- 2.1A output)... Having tried different chargers, batteries and outlets, I can only assume it's something with the Hardware no? I was able to reset the phone, and installed Jedi Master 14 to replace Jedi X14, to see maybe if something with the ROM was faulty, and that didn't help.
Phone no longer charges in CWM Recovery like it did last night. Phone turns off, and has that dead battery symbol on the screen (empty battery with a loading circular icon on it). It will no longer go any further.
Tried charging thru my computer to the same effect... worst case scenario I have to do a warranty exchange, however I'd like to avoid it as I believe T-Mobile no longer offers the White Note 2 and I don't like the titanium colored one, I'd have to un-root/stock rom/Triangle Away, and then re-root new phone (I'm a complete N00b at this stuff so it's time consuming for me to do), and honestly I'd just to avoid it if at all possible.
Click to expand...
Click to collapse
Well, its tough to say without using a multimeter and checking a few points, but, a power spike could fry the charging circuit in the phone. Thats the worst case scenario. Only thing you could do if thats the case would be to get a second battery and external charger.
Sent from my SGH-T889 using xda app-developers app

Luckily both can be gotten from eBay for under usd $20. Its probably worth checking asurion to see if they have white ones in Stock. You just have to weigh the cost of a warranty replacement the hassle of changing batteries every day.
Sent from my SGH-T889 using xda app-developers app

pyraxiate said:
Luckily both can be gotten from eBay for under usd $20. Its probably worth checking asurion to see if they have white ones in Stock. You just have to weigh the cost of a warranty replacement the hassle of changing batteries every day.
Sent from my SGH-T889 using xda app-developers app
Click to expand...
Click to collapse
I just experienced the same problem with my N2 over the weekend. Went to Bestbuy and got the $50 battery charger and extra battery (Check local availability) price matched to Amazon.com for $30 (with free shipping under more buying choices), brought it home to charge my completely wasted original battery and used the one in the box. Sure enough, it is the charging port. The new battery did the same thing as the old one, it showed it was being charged by the little lightning "icon" over the battery, but the battery was still draining. Although the lightning icon was there, there was no "bing-bing" tone (in the stock rom w/ root) to indicate the cable was ACTUALLY connected.
What is interesting is I think the battery icon shows up as "processing" if the USB pins are connected, but if just the +/- terminals are used in the cord (like the one that comes with the battery dock, not a MicroUSB cable -> USB port -> power adapter that comes with the phone, but power adapter -> MicroUSB) nothing registers on the phone even if it's completely powered down.
Called Tmo today and they are shipping a warranty replacement to me for free, I just have to wait for Ground shipping (didn't pay the $20 for "overnight"). Hopefully it'll come by next Wednesday, as I'm leaving on vacation then. With all this drama on the phone, I actually ended up ordering a Nokia 521 (give old WinMo a try again) from HSN over the weekend as a backup phone for $100. I felt like I was going to die not having a phone for 2 solid days.

Normally they send one out , then you return yours. The battery on this phone is phenomenal, so using an external battery charger and swapping them out would be viable while waiting for the new one to come in the mail id think.
Im hoping these phones dont get usb charging problems often. I might just mod mine to take wireless charging. My s2's microusb port died on me.
Sent from my SGH-T889 using xda app-developers app

pyraxiate said:
Normally they send one out , then you return yours. The battery on this phone is phenomenal, so using an external battery charger and swapping them out would be viable while waiting for the new one to come in the mail id think.
Im hoping these phones dont get usb charging problems often. I might just mod mine to take wireless charging. My s2's microusb port died on me.
Sent from my SGH-T889 using xda app-developers app
Click to expand...
Click to collapse
I'm actually quite disappointed that Tmo told Samsung to not wire up the wireless charging leads on this phone. I would be totally on-board for wireless charging a'la Nexus or my Touchpad. My Microusb connector wouldn't even see any use other than when to flash a rooted update.
I'm OK with a soldering iron, but I don't want to tear the thing apart to hook them up myself. Seems like it would be a great way to void the warranty, OR disable my Squaretrade warranty.

Just wanted to drop back by since I was about to send back my N2 to Tmo... I unrooted, triangle awayed and finally flashed "clean" firmware directly from Samsung via ODIN.... both batteries are now charging via both USB and Power adapter.
WTF