Related
Have had the XDA for nearly 2 weeks now and still getting the hang of all it's features.
I did an initial charge overnight and have since kept it topped up using the PC/USB cable.
As a small security precaution I've got the startup pin number activated so when syncing to PC or resetting the XDA I key in the pin.
This morning when I got to work I just plugged the XDA into the PC USB but got called away to a meeting. When I came back the PC said I had a new usb device and the device had failed, I then noticed the battery level had dropped to 0% (phone on/bluetooth on).
For whatever reason the usb was plugged in but was not charging.
Moral of the story is watch that activesync pops up so you now you have a good connection and that the unit is charging.
Steve
I don't think that all USB sockets are capable of charging the Exec if the screen is on. I.e. they can't provide enough amps to power the Exec and charge the battery.
It helps to reduce the screen brightness if charging is important.
I've taken to using only the mains charger for charging (which never has the same problem) and doing ActiveSync over Bluetooth. I keep the USB lead with me for emergencies only.
I tend to charge it with the screen towards the keybaord and the lid down so the screen is off.
Well it has charged to 100% now, perhaps I'll check the time it takes next time when I leave the phone & bluetooth on (had to turn them off at 0%)!
But to be fair I did not need to reset at all so good old XDA.
Steve
if you press and hold the power button will turn off the backlight, then when your charged press again and hold to turn the backlight back on. should reduce the consumption
If the right hand light goes orange then green when charged, it should be charging.
I advocate the use of a powered USB hub in between your Universal and the PC (ie: don't connect directly to the PC). Plenty of juice available then for charging.
I've had an o2 mini s for about a week now and i'm pleased with it on the whole. My only real concern is battery life. My mini seems to drain much quicker than by xda 2 s which I had before. I seem to drop about 10% in 1 hour 10 mins and that's just a few calls/txts and minimum fiddling.
8:20 100%
9:42 88%
I've dropped all the o2 software and don't have any tricky 3rd party apps installed only;
xbar3 ( great btw )
avantgo wireless
ebook reader
tcpmp
I've read quite a few posts about battery life being good on this phone but i'm not seeing it. I'm still in my 14 day cooling off period and i'm considering sending it back for a replacement.
Jeff
Is Wifi off, bluetooth off. Do you check your email every ... minutes over GPRS?...
With email checking every 10 minutes my qtek battery last at least 2 whole days.
wifi/gprs/bluetooth all off - not used today
Just phone today - maybe 12 calls.
Time now 14:21 battery at 61% !
Now i'm worried ......I reckon i'll be down to 30% by this evening.
16:32 - 49%
maybe there are problems with these batteries i had problems with charging the battery it didnt seem to show correct level, sent it back for another unit
17:26 - 38%.
If another goes we'll be up here all day.
My battery life seems to be utter rubbish every time I charge my MDA Vario over the USB link. I can go to bed with 100% battery and find it dead by morning. This has happened two or three times since I bought it on 5th November. Last Saturday morning I had the USB cable connected to download some music to my SD card with 100% charge at 10:00. I played music for about an hour through the supplied headphones and by 13:00 I was down to 50% battery. By that evening I was down to a few %. I've read reviews that you you should squeeze about 10 hours of continuous music from this thing on one full charge so an hour of music and 7 hours of standby/sleep seems pathetic.
If I charge using the mains charger and sync over Bluetooth I get a standby battery life of about 5 days. Obviously that is shortened with use so in practice I am charging it every 2-3 days (no point starting a day with only 20% left!).
I have no idea why USB charging is completely hopeless. I have tried soft resetting or closing all active apps after charging, to make sure ActiveSync isn't actively running and causing a drain (just as you are advised to with a Bluetooth sync) but that seems to make no difference. USB charging is rubbish. Mains charging is the only way to go, IME.
21.50 - 24 %
Charging over USB hopeless
tdodd said:
I have no idea why USB charging is completely hopeless. I have tried soft resetting or closing all active apps after charging, to make sure ActiveSync isn't actively running and causing a drain (just as you are advised to with a Bluetooth sync) but that seems to make no difference. USB charging is rubbish. Mains charging is the only way to go, IME.
Click to expand...
Click to collapse
I confirm USB charging IS rubbish. The reason seems to be that the power available out of that conector on a PC is not enough to charge properly... I had the same issue with BA and Himalaya...
Answer: get a USB charger / car charger that can deliver 1A minimum.
BTW I found a craddle for the Wizard in Dubai @ Plugins. It comes with USB port/cable + power adapter. Works like a charme.
Cheers,
Hal.
tdodd said:
My battery life seems to be utter rubbish every time I charge my MDA Vario over the USB link. I can go to bed with 100% battery and find it dead by morning. This has happened two or three times since I bought it on 5th November. Last Saturday morning I had the USB cable connected to download some music to my SD card with 100% charge at 10:00. I played music for about an hour through the supplied headphones and by 13:00 I was down to 50% battery. By that evening I was down to a few %.
Click to expand...
Click to collapse
My C500 Did that when I had it Plugged in the Front USB ports on my case, I normaly had it plugged in to the onboard USB at the back of my pc with a usb ext cable so I could have it on my desk but I went off to a lan party and when I plugged everything back in I put my USB cable to front usb port and found it was Discharging my Battery instead of charging it, got my usb in Back port all is fine again now
Maybe you have yours in to the front USB port or non onboard port?
I use a laptop, which only has two USB 1.1 ports but they each supply enough juice to power a USB ADSL modem (not that I'm using one of those these days), which is more than some PCs will manage and also my USB hard drive, which my Shuttle won't. So there is no lack of power from the USB ports on the laptop.
Of course, the USB spec only permits a maximum current demand of 500mA so any equpiment expecting more should not be using USB for its power supply. In any event, the phone does charge from the USB ports, albeit very slowly, but eventually the orange charge light does go green. So my situation is not one of discharging instead of charging.
I've just swapped my ROM from Vario to k-jam so I'll see if that makes any difference to the performance. I know it's given me 802.11g, which was missing before.
I had an M500 briefly (Magician) on Orange that had very poor battery life, it was one of the reasons I ebayed it, gave the contract sim to my wife and started a cheaper better value T-Mobile account with an MDA Compact, which
had better battery life. Typically overnight after a full charge the Orange unit went down to 75% and the T-Mobile one was at about 98% on standby.
My Vario I have now, my other T-Mobile account has very good battery life and charges very well off USB. If I sync it in the morning whilst reading my emails and stuff, let it charge USb for about 25 mins, it'll be full and by the night it will have dropped down to about 80%. This is with about 30 mins of calls, about seven or eight emails sent/received and maybe 15 mins with WIFI on.
tdodd said:
I use a laptop, which only has two USB 1.1 ports but they each supply enough juice to power a USB ADSL modem (not that I'm using one of those these days), which is more than some PCs will manage and also my USB hard drive, which my Shuttle won't. So there is no lack of power from the USB ports on the laptop.
Of course, the USB spec only permits a maximum current demand of 500mA so any equpiment expecting more should not be using USB for its power supply. In any event, the phone does charge from the USB ports, albeit very slowly, but eventually the orange charge light does go green. So my situation is not one of discharging instead of charging.
I've just swapped my ROM from Vario to k-jam so I'll see if that makes any difference to the performance. I know it's given me 802.11g, which was missing before.
Click to expand...
Click to collapse
do you have a link to the imate rom? is the vario rom also available?
sundip said:
do you have a link to the imate rom? is the vario rom also available?
Click to expand...
Click to collapse
I can't remember for sure where I got the k-jam ROM ( I think someone saved a copy somewhere) but try here - ftp://ftp.clubimate.com/ - and then save file K-JAM_WWE_1010903_106_10110_ship.exe
That is a self installing upgrade that includes the whole k-jam ROM and k-jam extended ROM files.
I don't know where to get a Vario ROM from. I did back up my own copy (I hope) but the method is a bit whacky and as I only have a 1GB mini-SD card my ROM backup image is 1GB because the only way to secure the image is to dump the whole card to a file.
Before you go playing around do make sure you have your own backup of the ROM or if not the whole thing then the Vario extended ROM files at least. I'm using the k-jam ROM with the Vario Extended ROM.
Re: Charging over USB hopeless
hal said:
I confirm USB charging IS rubbish. The reason seems to be that the power available out of that conector on a PC is not enough to charge properly... I had the same issue with BA and Himalaya...
Answer: get a USB charger / car charger that can deliver 1A minimum.
BTW I found a craddle for the Wizard in Dubai @ Plugins. It comes with USB port/cable + power adapter. Works like a charme.
Cheers,
Hal.
Click to expand...
Click to collapse
Hi,
Is there any way to disable USB charging? I didn't connect USB very often since it will charge automatically and I don't like the battery be charged very often. It might kill battery soon. I like to sync with bluetooth; however it is much slower than USB. It's amazing if there is any tool to disable USB charging. Because it will sync fast and will not hurt the battery. Thanks for the suggestions in advance.
Cheers!
Michael
Re: Charging over USB hopeless
Michael Lin said:
Is there any way to disable USB charging? I didn't connect USB very often since it will charge automatically and I don't like the battery be charged very often. It might kill battery soon. I like to sync with bluetooth; however it is much slower than USB. It's amazing if there is any tool to disable USB charging. Because it will sync fast and will not hurt the battery.
Click to expand...
Click to collapse
You are thinking of older batteries such as Nicads. Topping up often does not hurt Lithium batteries, in fact it's better for them. Their main enemies are deep discharge and heat - and that's exactly what you're subjecting it to by letting it run flat, then charging for hours to get it back to max.
Re: Charging over USB hopeless
Ineedtoys said:
You are thinking of older batteries such as Nicads. Topping up often does not hurt Lithium batteries, in fact it's better for them. Their main enemies are deep discharge and heat - and that's exactly what you're subjecting it to by letting it run flat, then charging for hours to get it back to max.
Click to expand...
Click to collapse
Dear Ineedtoys,
Thanks for the reply. I understand that there is no so called "memory effect" on Lithium battery; however when I checked the battery spec, I always found that there is a "charging cycle limitation". For example, a specific battery claimed that it can be rechaged 10,000 times, then very USB charging will be counted also. It will reach 10,000 times faster. This is my concern. I don't know if this is right or wrong. Can somebody help to clarify this?
B. Rgds.,
Michael
Re: Charging over USB hopeless
Ineedtoys said:
You are thinking of older batteries such as Nicads. Topping up often does not hurt Lithium batteries, in fact it's better for them. Their main enemies are deep discharge and heat - and that's exactly what you're subjecting it to by letting it run flat, then charging for hours to get it back to max.
Click to expand...
Click to collapse
Dear Ineedtoys,
Thanks for the reply. I understand that there is no so called "memory effect" on Lithium battery; however when I checked the battery spec, I always found that there is a "charging cycle limitation". For example, a specific battery claimed that it can be rechaged 10,000 times, then very USB charging will be counted also. It will reach 10,000 times faster. This is my concern. I don't know if this is right or wrong. Can somebody help to clarify this?
B. Rgds.,
Michael
Re: Charging over USB hopeless
Michael Lin said:
Ineedtoys said:
You are thinking of older batteries such as Nicads. Topping up often does not hurt Lithium batteries, in fact it's better for them. Their main enemies are deep discharge and heat - and that's exactly what you're subjecting it to by letting it run flat, then charging for hours to get it back to max.
Click to expand...
Click to collapse
Dear Ineedtoys,
Thanks for the reply. I understand that there is no so called "memory effect" on Lithium battery; however when I checked the battery spec, I always found that there is a "charging cycle limitation". For example, a specific battery claimed that it can be rechaged 10,000 times, then very USB charging will be counted also. It will reach 10,000 times faster. This is my concern. I don't know if this is right or wrong. Can somebody help to clarify this?
B. Rgds.,
Michael
Click to expand...
Click to collapse
That's true. It's the same with Notebooks. The more you charge it, while it's in use, the faster the battery gets "killed"!
Re: Charging over USB hopeless
Michael Lin said:
Hi,
Is there any way to disable USB charging? I didn't connect USB very often since it will charge automatically and I don't like the battery be charged very often. It might kill battery soon. I like to sync with bluetooth; however it is much slower than USB. It's amazing if there is any tool to disable USB charging. Because it will sync fast and will not hurt the battery. Thanks for the suggestions in advance.
Cheers!
Michael
Click to expand...
Click to collapse
Answer my own question.
I am quite sure that the USB charging can be disabled since I used to see the config on a HP device. I also believed that this can be done by 'registry' since it is Windows tradition. I finally found it after a short study. Please go to
HKLM\Drivers\BuiltIn\usbfndrv
and change the
EnableUsbCharging to '0'
then
soft reset => Bingo.
Hope it helps.
Michael
Hi all,
My TD1 would charge from any mini-usb charger (such as the one I have with my TomTom). I put the TD2 on charge from one of these last night. The front light went orange, and the battery status changed to charging. However, I wake up this morning (7 hours later) and the light is still orange. I disconnect and look at the battery info and it says the last charge was yesterday.
Is the TD2 fussy about which charger you use? I really hope HTC are not pulling an Apple and locking their devices to only their accessories!
R
rakh1 said:
Hi all,
My TD1 would charge from any mini-usb charger (such as the one I have with my TomTom). I put the TD2 on charge from one of these last night. The front light went orange, and the battery status changed to charging. However, I wake up this morning (7 hours later) and the light is still orange. I disconnect and look at the battery info and it says the last charge was yesterday.
Is the TD2 fussy about which charger you use? I really hope HTC are not pulling an Apple and locking their devices to only their accessories!
R
Click to expand...
Click to collapse
I think I remember reading something about an option for not charging the battery when connected on PC USB (presumably for saving laptop batteries ;-) ) in the manual.
So I guess that the TD2 has a way to detect if it is plugged into a charger or a laptop, and maybe it can do that only with HTC charger, believing your charger is in fact a laptop. I would have guessed they use the activesync status to differentiate between PC and charger, but maybe not ;-)
So what could maybe solve your problem is to select "charging battery if plugged to a computer", I think it is in the touchflow 3D options somewhere... I would play with those options to check if it improve things...
Settings - All Settings - Batter - (Battery Tab). "When device is turned on, do not chagre the battery when connected to the PC.".
For me this is unticked - and when it was plugged in the battery reported as 'charging'.
Strange!
R
rakh1 said:
Settings - All Settings - Batter - (Battery Tab). "When device is turned on, do not chagre the battery when connected to the PC.".
For me this is unticked - and when it was plugged in the battery reported as 'charging'.
Strange!
R
Click to expand...
Click to collapse
Does it work with the standard HTC charger?
And plugging to a PC?
If yes, your other charger may be a little light in specs (amperage too small, or voltage slightly below USB specs) and the TD2 may be picky regarding this...
I would also inspect the microusb plug of the charger to check for dirt/corrosion/deformation, and also the battery within the device: I already had intermittent problems like that caused by imperfect connections: the device was in a charging state, but no actual charging did occur. Replugging carefully after blowing on the plugs solved the problem....
From past experiences, all my HTC phones charges up with any USB cables or chargers, even my HD. So may your battery is not working some how... best thing to do is try charging it with your original charger or connect your device to your computer, it should charge up. If not, then take it back to your dealer man! I don't want to say it but maybe you have a lemon...
Hi all,
It charges well from the supplied wall charger. It also appears to be charging well from the computer. So, this leaves me to suspect the other (non HTC) charger.
Thanks for your help....
R
OK - this just getds weirder and weirder...
Yesterday, plugged into PC all day whilst I was working. After a while green light so fully charged. Went out for an hour or two and when I came back I put it on a different wall charger for a test (my old TD1 one) and after 30 mins or so green light - so fully charged again.
So, I thought - this is great, it proves the other wall charger has a problem. Before bed a few hours later I took the TD1 charger and put it in the bedroom. Plugged the TD2 into it overnight. Woke up this morning, and orange light???!!!
Put it into the computer this morning and after 15 mins - green light???
CONFUSED!!!
Could it be some function whereby it won't charge a bettery that has been charged full in the past x hours or so??? Is anyone else seeing anything like this????
R
I think you have might have a duffed battery. I think you should really check it out.
I use a Motorola universal mini-usb charger i mine car and I haven't noticed any different behavior than using the supplied HTC charger or HTC usb cable in my laptop..
I put it on the supplied charger for 12 hours and it did not charge at all despite the orange light being on. As I am within 7 days I've asked DeviceWire to refund or replace...
R
Way to go, you should get a new one!
check the connection!
rakh1 said:
I put it on the supplied charger for 12 hours and it did not charge at all despite the orange light being on. As I am within 7 days I've asked DeviceWire to refund or replace...
R
Click to expand...
Click to collapse
First of all, yes you are.. IF the device is faulty!
from experience, I know that some cables dont charge the device.. First of all make sure there isnt some dust or stuff in the connection. secondly, try resetting the device.. If the orange light is on, then it only means some of the pins in the EXTusb connection have been shorted, my reccomendation, check the pins on the miniUSB connector on the phone, and make sure you didn't bend some.
Hey all,
No bent pins.
No dust or dirt in the socket/plug.
Tried 3 (HTC) wall chargers - all the same behaviour.
Tried resetting the device.
No luck
R
I especially used my USB-Charger this night to charge the device.
It is a Hama USB Charger (Prod# 00014095, you can find it with this on google).
It has an output of 800 mA, while the original hast 1000 mA.
But it charged up to 100% and was "green" this morning.
So it seems to work and is really Small in size
Regards Thorsten
Well, this has been a problem for me from the start and all I have used are HTC chargers. I've not had anything like this sort of issue with the previous HTC phones I've owned (and there have been a few - check sig). What confused me was that it does appear to accept charge from the USB port of a computer - which is just odd??!?!??
Anyway, I think this is unacceptable from a new product so I've asked for a refund/replacement. Awaiting a reply from Devicewire.
R
Whats weird,
My TyTn has some probs in this department.
From time to time, setting it on USB power, will not even lit the charge-light.
And it will not charge.
I have to reset it and then it works.
Dont know what that is.
DeviceWire sent me an RMA. In the meantime I hard reset the device again after confirming that the wall charger would not go above 89% charge - 9 out of 10 bars (I installed a prog to give me a % reading).
After hard reset the battery went from 89% to 100%. I am now running it down again - before I give it one last chance overnight. If I wake up tomorrow and it is still orange and at 9 of 10 bars then off it goes...
R
Fingers are crossed for you mate! Hope it goes well.
This just gets stranger - after *this* hard reset it now appears to be working as expected - woke up this morning to a green light for the first time!!
So, was this just a software thing - solved by a couple of hard resets - or might there still be a problem lurking underneath???
Problem now is that if I send it back to DW they'll confirm it is working as expected. If I wait and do not send it I run out of the 'return within 7 days for a refund' and will have to reply on HTC aftercare (horror!!).
What to do!!!???
R
I'd still return it but in your RMA notice stipulate that you suspect the problem "seems" fixed but say it might come back again and on that note are still returning it for a replacement/refund.
Totally stock (but i don't think it matters).
Plug the phone in, orange LED comes on.
Hold it or place in on the counter five seconds later, LED is off.
Had the phone since 6/4.
Anyone else having issues?
Are you using the AC charger ? I have two Evos and one of the chargers does what you are describing. The orange LED comes on and then goes off after a while and the phone stops charging. Does it on both phones, the other charger works fine with both usb cables.
Are you using the USB charger with a computer or laptop or plugging straight into the wall with an AC charger?
This does make a difference because if you are charging with a USB + laptop combination you could be suffering from the computer going to sleep and disabling the USB ports power to conserve laptop battery life. If you are having the issue when plugging into the wall, try plugging into a computer and selecting the "Charge Only" option when your USB debug comes up. Once it does this, allow it to charge for a period of time and then turn the phone off, switch to AC power plug and see what happens.
Perhaps you had some kind of over voltage spike on the charger through the AC plug. I could see it possibly tripping something in the phone to stop taking charge to protect the handset.
Also make sure if you do use a laptop, use a USB 2.0 or better port. More power and faster connection. Gotta love it.
Your charger may not be sourcing enough current anymore (for whatever reason). I have seen the exact same behavior with USB car chargers that were only sourcing 100-150mA.
Have you tried plugging the USB cable into a modern desktop PC? (Some laptops have reduced current ports, so a desktop is a safer bet)
Its definitely a current issue. I tried to charge my phone using my bluetooth headset's wall charger, but I got the behavior you are describing. The bluetooth headset's charger just doesnt put out enough current.
Are you using the charger that came with the phone? if so, you may want to exchange the charger...
im having the same problem when i connect it to my desktop, it sees it for about 2 secs n then disappears. My computer at work has no problem seeing the phone. i wonder if i need a driver or something for my usb ports, anyone have any ideas??
tarheelsmj12001 said:
im having the same problem when i connect it to my desktop, it sees it for about 2 secs n then disappears. My computer at work has no problem seeing the phone. i wonder if i need a driver or something for my usb ports, anyone have any ideas??
Click to expand...
Click to collapse
Probably not a driver issue, but that that rail from the power supply is either undervolted (say 4.6V instead of 5V), or can't provide enough current (amperage) or both. If I recall correctly, the Evo needs 5V @ 1A (+/- 3% tolerance).
Phone not charging
my phone has been charging fine since I got it... even been using the night desk clock app while sleeping at night for the alarm with it plugged in... everything was good...
With my phone about to die today, I plug it in to the wall charger, the led/batter indicator shows that it is charging... then POW.. it says I have a low battery and it needs to be plugged in... WTH??? it is plugged in!
The only thing I did today was flash the new boot.img for the cap fix over in Toast's thread...
Weird thing now is that I took my hero battery and put it in my EVO, plugged it into wall charger, and it stays charging... So, I put my EVO battery in my hero, plugged it in, and whola... it's now charging...
Please help as I am baffled.
MILH0U5E said:
The only thing I did today was flash the new boot.img for the cap fix over in Toast's thread...
Click to expand...
Click to collapse
that's your problem right there. that custom kernel is known to have charging issues.
I'm having the same issue with my car charger consistently. Plus my AC charger less consistently. For example, I'll go to bed and plug it in, the next morning I wake up and see the phone is at 80% charge and isn't charging. At some point over night, it gave up. This is with the stock charger too.
I am trying to figure out why my DroidX will not charge fully all of the sudden. I plugged it in yesterday to a wall charger for about 2 hours when the battery was at 50%, can back after 2hrs, and it was still at 50% even though it showed the charging icon the whole time. I rebooted it, and plggeed it into my computer's USB port, and set the USB option to "Charge only". Came back this morning, after it sat there for 6 hours and same thing - it is just maintaining the current battery level, but not charging it higher.
I have only owned it for a week, and the only change between now and when it was charging properly was that I installed a wireless tethering app, however, that runs on demand, and it has not been open or running. WiFi and GPS are also completely turned off.
Anyone else experienced this? I assume unless I keep it plugged in 24/7 now, it will eventually die all the way down!!
p.s. - I also tried letting it charge while it was completely powered off, but same thing. Shows that it is charging but just maintains current level.
crobs808 said:
I am trying to figure out why my DroidX will not charge fully all of the sudden. I plugged it in yesterday to a wall charger for about 2 hours when the battery was at 50%, can back after 2hrs, and it was still at 50% even though it showed the charging icon the whole time. I rebooted it, and plggeed it into my computer's USB port, and set the USB option to "Charge only". Came back this morning, after it sat there for 6 hours and same thing - it is just maintaining the current battery level, but not charging it higher.
I have only owned it for a week, and the only change between now and when it was charging properly was that I installed a wireless tethering app, however, that runs on demand, and it has not been open or running. WiFi and GPS are also completely turned off.
Anyone else experienced this? I assume unless I keep it plugged in 24/7 now, it will eventually die all the way down!!
p.s. - I also tried letting it charge while it was completely powered off, but same thing. Shows that it is charging but just maintains current level.
Click to expand...
Click to collapse
this is not normal ,while in the wall charger it should charge all the way and the same on usb but just slower ,if this problem persist i would bring it to VZW and get a knew batt or phone or both since you have only had it a week
It may not be the phone or the battery. It's probably a faulty DC adapter which is not delivering the proper amperage. I just had this problem with my Slingbox. It would light up but the lights looked dim and I couldn't connect to it. A new adapter fixed it.
(Edit) I just reread your post and noticed you are charging it on your PC's USB port. Try the wall charger or another PC. Some PCs don't put out enough juice to charge.
Sent via XDA App on my Droid X
BBJohnnyT said:
It may not be the phone or the battery. It's probably a faulty DC adapter which is not delivering the proper amperage. I just had this problem with my Slingbox. It would light up but the lights looked dim and I couldn't connect to it. A new adapter fixed it.
(Edit) I just reread your post and noticed you are charging it on your PC's USB port. Try the wall charger or another PC. Some PCs don't put out enough juice to charge.
Sent via XDA App on my Droid X
Click to expand...
Click to collapse
This is somewhat true. The phone should charge with less power regardless of the source. You notice this most on say a USB hard drive and this is why you have y cables sometimes on the drives that take more power. Does the computer you happen to be charging it on happen to be a Laptop?
FYI - I charge from a desktop PC that has a 1000W corsair powersupply and hig end motherboard.
With that asie though, I was able to get the charging back - works fine after I did a hard reset. Most everything was backed up via Google, so all I had to do was rearrange my icons on home screen and change a few android settings.
I still have all the same apps, so I do not know what caused it. Whatever, it is fine now, but if it happens again I will take it in - I do not want to have to hard reset every few weeks. (I have the $6 a month full protection plan, even if I lose it, it gets replaced)