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AC discharges instead of charging

Hello to all XDA-Developers and mortals
After years of using this forum and always being helped by just using the search function, this time I need to make this Post to hopefully get some help.
I have right now a touch Pro, with the original rom from HTC support site on my tPro. (Before it was several different Energy roms)
since a week my only chance to get my tPro charged is, using a USB connection cable since the original charger won't charge furthermore it discharges my device in less than e few minutes. I can actualy watch it sucking it out.
hase anybody an Idea what might fix this problem.
I want to (miss)use this post to thank all the chefs and developers that have worked on improving our everyday experience with our devices.
thank you all.

just go to start-->settings-->system-->battery and should say something about not charging on pc and you should be set from there

XERO_Racer said:
just go to start-->settings-->system-->battery and should say something about not charging on pc and you should be set from there
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there is the option that says [do not charge over USB if conected to PC]
if I uncheck this one it won't even charge over USB, but my problem is that the battery is not charged with the original charger.

s.zamani said:
there is the option that says [do not charge over USB if conected to PC]
if I uncheck this one it won't even charge over USB, but my problem is that the battery is not charged with the original charger.
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have u shut off the phone properly and take out the battery for like 30 seconds and putting it back in and connecting the charger? if that doesnt work, look for a spare USB cable sometimes USB cables give in at times, or look for a usb ac charger

[Q] Usb Charging

I was surfing the net when i come across this:
.verizon-cellphones.org/motorola-xoom-usb-and-pc-charging-driver-download(dot)html
does this mean that you now can charg the xoom throug the usb interface(i dont own a xoom myself )

No. you cannot charge the Xoom over USB.

Why do people want to use the usb to charge. It would take forever to do that.

Being able to charge over USB in a pinch would be better than nothing if you're without your charger. Plus, my USB car charger can put out 1A, and you can buy iPad specific USB chargers that put out 2A, so it actually wouldn't be much different than the regular charger. It certainly doesn't hurt to have the capability. For all the crazy stuff we hackers add to our devices on XDA, I am blown away that people still ask "why would you want to do that"... Why not?
-Taylor

Just-in-time said:
Why do people want to use the usb to charge. It would take forever to do that.
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My car has a USB port built into the stereo, on my Droid when plugged in via USB I could play my music and also have the phone always topped off with a charge... With the Xoom I'd need a charging cable too... Hassle. Guess that's a part of why I keep my Droid around...

Somebody should try it out
Sent from my PC36100 using XDA Premium App

jvs60 said:
Somebody should try it out
Sent from my PC36100 using XDA Premium App
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Plenty of people have rooted their Xoom's using those charging drivers, they don't do anything for the Xoom other than allow it to work with adb.

Facegarden said:
Being able to charge over USB in a pinch would be better than nothing if you're without your charger. Plus, my USB car charger can put out 1A, and you can buy iPad specific USB chargers that put out 2A, so it actually wouldn't be much different than the regular charger. It certainly doesn't hurt to have the capability. For all the crazy stuff we hackers add to our devices on XDA, I am blown away that people still ask "why would you want to do that"... Why not?
-Taylor
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Click to collapse
From what I have noticed I have yet to have wished that I had a charger SD or the one that came with it as it has a great battery and is more than enough to get me througn the day and i have been neglecting my droid Inc and macbook pro while using my Xoom for 6-8 hours a day plus a gppd 10-15 stand by time

Battery life is so good you don't even need to charge during the day

xlGmanlx said:
Battery life is so good you don't even need to charge during the day
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When you're at 1.5ghz you might

Guys, there are lots of reasons to want to charge over USB. Like, say, when you're on a road trip and won't be spending much time around an outlet. Even if it doesn't charge quickly, if it provides enough juice to keep it from dying, that may be enough. I'm sure motorola sells a car adapter but I'd rather just use the USB chargers I already have.
Can we not make this discussion about if we *should* be able charge over USB, and keep it purely about *how* to charge over USB? I think we all understand that not everyone cares about this feature, but some people do.
So, I heard that there is an official dock that charges it over USB? Or does it use contact points or something else?
If the official dock charges it over USB, it may be simple to mod a USB charger to work with the Xoom.
-Taylor

Facegarden said:
Guys, there are lots of reasons to want to charge over USB. Like, say, when you're on a road trip and won't be spending much time around an outlet. Even if it doesn't charge quickly, if it provides enough juice to keep it from dying, that may be enough. I'm sure motorola sells a car adapter but I'd rather just use the USB chargers I already have.
Can we not make this discussion about if we *should* be able charge over USB, and keep it purely about *how* to charge over USB? I think we all understand that not everyone cares about this feature, but some people do.
So, I heard that there is an official dock that charges it over USB? Or does it use contact points or something else?
If the official dock charges it over USB, it may be simple to mod a USB charger to work with the Xoom.
-Taylor
Click to expand...
Click to collapse
The docks use a pair of contact points, those 2 gold spots next to the HDMI plug.

I get over 12 hours use over clocked baby, 24 hours between charges
Elysian893 said:
When you're at 1.5ghz you might
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Click to collapse

Facegarden said:
Guys, there are lots of reasons to want to charge over USB. Like, say, when you're on a road trip and won't be spending much time around an outlet. Even if it doesn't charge quickly, if it provides enough juice to keep it from dying, that may be enough. I'm sure motorola sells a car adapter but I'd rather just use the USB chargers I already have.
Can we not make this discussion about if we *should* be able charge over USB, and keep it purely about *how* to charge over USB? I think we all understand that not everyone cares about this feature, but some people do.
So, I heard that there is an official dock that charges it over USB? Or does it use contact points or something else?
If the official dock charges it over USB, it may be simple to mod a USB charger to work with the Xoom.
-Taylor
Click to expand...
Click to collapse
Agreed. Why does it seem like everyone has such a pissy attitude on this forum? It seems like 75% of all OPs in regards to do something new are negative and completely non-constructive. "No, you can't do that" "why the hell would you want to?" "That sounds useless. I have my phone/laptop/TV/mother for that"
I don't think that I would need the USB trickle charging ability because the battery lasts plenty long (yes, even at 1.5Ghz), but why get on here and make the OP feel like an idiot for trying to spur some innovation?
Sent from my Xoom using XDA Premium App

Hey Guys,
I posted a long comment on the thread in the Moto forums. Hopefully we get a real response from Motorola. So far they have only said "you can't do that", but haven't explained if its a hardware limitation, or if it was just disabled in software (which is my hope).
Here's my comment:
https://supportforums.motorola.com/message/336752#336752
-Taylor

It's really pretty simple why you can't charge over USB. USB does not provide the correct voltage. The Xoom requires 12vdc to charge and USB is only 5vdc. It's like trying to charge your car battery with a charger made for 2 D cells. Amperage does play into charge time but can not be made to compensate for the lack of voltage. If the Xoom were to be modded pretty extensively inside it's possible. You would need to add a step up converter, make the respective connections from the USB port, and have to be willing to void your warranty. All in all it would be easier to carry a car charger. I have one and it works great.
Sent from my Xoom using XDA Premium App

kz810rider said:
It's really pretty simple why you can't charge over USB. USB does not provide the correct voltage. The Xoom requires 12vdc to charge and USB is only 5vdc. It's like trying to charge your car battery with a charger made for 2 D cells. Amperage does play into charge time but can not be made to compensate for the lack of voltage. If the Xoom were to be modded pretty extensively inside it's possible. You would need to add a step up converter, make the respective connections from the USB port, and have to be willing to void your warranty. All in all it would be easier to carry a car charger. I have one and it works great.
Sent from my Xoom using XDA Premium App
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Click to collapse
Its is very possible that they included a step-up converter circuit, but later disabled it because they decided it takes too long to charge. The circuit would add less than a dollar to the unit in volumes, so if they wanted to be safe they could have included it and made the decision later if they would use it. That is what I am trying to find out. The high resolution images of the teardown show what may be a stepup circuit by the USB connector, but it is too hard to tell:
http://www.ifixit.com/Teardown/Motorola-Xoom-Teardown/4989/1
-Taylor

what are all these USB chargers on eBay about?
My question is now (and I am sure I've seen it in another thread): How do sellers on eBay get away with advertising generic USB chargers to be used with the Xoom (e.g. this)? Of course, the USB cable has to be provided... I checked yesterday because I want to equip my car with a mount and charger in the future. Either the Chinese have found a way to charge the Xoom via USB or it's all a load of owl droppings! Has anyone tried one of these magic chargers yet?

funnycreature said:
My question is now (and I am sure I've seen it in another thread): How do sellers on eBay get away with advertising generic USB chargers to be used with the Xoom (e.g. this)? Of course, the USB cable has to be provided... I checked yesterday because I want to equip my car with a mount and charger in the future. Either the Chinese have found a way to charge the Xoom via USB or it's all a load of owl droppings! Has anyone tried one of these magic chargers yet?
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Click to collapse
They put the word Xoom in the auction listing, that's the only thing they did to make this Xoom compatible. Do not buy that.

funnycreature said:
My question is now (and I am sure I've seen it in another thread): How do sellers on eBay get away with advertising generic USB chargers to be used with the Xoom (e.g. this)? Of course, the USB cable has to be provided... I checked yesterday because I want to equip my car with a mount and charger in the future. Either the Chinese have found a way to charge the Xoom via USB or it's all a load of owl droppings! Has anyone tried one of these magic chargers yet?
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Click to collapse
A lot of people just assume things. I was readings specs for the xoom at another popular android forum. They had listed that not only did it support USB charging, but it supported flash 10.1 as well (which of course it never will).

USB charging

Is there a way to enable USB charging?
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malcovitch said:
Is there a way to enable USB charging?
Sent from my Xoom using XDA Premium HD app
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As far as I know, and have read ... The original Motorola Xoom does not and will not charge via usb because of the voltage needed. The Xoom2 or the Xoom FE both of which charge via usb.

That's disapointing ...

USB charging can be modified on phones via kernel settings, if the kernel supports it.
I'm sure this feature would exist by now if it could be done. I too am sad.

Eh, it may suck that we have to use a proprietary cable...but damn does it charge fast.
Sent from my MB855 using Tapatalk

is there any proof of kernal enabled usb charging?

rubber guard said:
is there any proof of kernal enabled usb charging?
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For Xoom?
Siyah kernel for Galaxy S2 (this is what I used) with ExTweaks app lets you change the input voltages from USB/AC charger.

AFAIK the Xoom doesn't have any electrical paths for USB voltage to the battery for charging. Would need to do some serious dirty work to get it working.
Simply: not worth it.
EOS N113 @ MZ604 [XDA-HD]
Stock @ SGH-I717R [XDA-Premium]

no chance to charge via usb.
the separate charging port is nice, the xoom charges fully in about 2 hours from <10%.

Eun-Hjzjined said:
AFAIK the Xoom doesn't have any electrical paths for USB voltage to the battery for charging. Would need to do some serious dirty work to get it working.
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Click to collapse
Exactly. I think i saw a tutorial for doing this on YT, but it looked kinda scary for someone who isn't used to it. So really not worth it.

Eun-Hjzjined said:
AFAIK the Xoom doesn't have any electrical paths for USB voltage to the battery for charging. Would need to do some serious dirty work to get it working.
Simply: not worth it.
EOS N113 @ MZ604 [XDA-HD]
Stock @ SGH-I717R [XDA-Premium]
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Click to collapse
Lol you're pretty much on the money, the XOOM USB does not connect straight to the battery, hence the reason why you cannot charge it.

One reason why this is not possible is because the Xoom uses a much higher voltage battery (7.4V afaik) and so converting the 5V USB voltage to the >8V needed in order to even think about charging the battery would make the charging slow, inefficient and costly to implement.
I don't know why Moto chose to use a higher voltage battery with the problems it creates, but one thing it does mean is that it can only be charged using the charger that Moto supplied.

Yeah. That charger.... mine died and I had to buy a replacement. Walmart was the only place I could get one, and cost me nearly 40 bucks.... not happy.
I'm thinking of returning it and trying an HD dock.
EOS 2.0 @ MZ604 [XDA-HD]
Stock @ SGH-I717R [XDA-Premium]

Phone not charging the same speed when using non OEM charger.

The title say's it all. When I use the included charger the phone charges much more quickly than when I use a 3rd party charger. I've tried a variety of different charges all with the same result. I know this was supposedly fixed in the most recent update, but it seems to still be affecting me.

AFAIK, most 3rd party chargers that I've come across only output 1A, such as my old iPhone adapter.
The one included with the OPO outputs 2A.
This is the same with my note 3 adapter outputting 2A which I've tested and performs the same as the OPO adapter.

I heard that the OPO usb does make it charge faster too. Saw someone on this forum tested it, can't remember which thread though.

Using Galaxy S3 charger took forever, I charged now with the OPO one and it went 20% in 20 minutes.
the S3 charger gives 1.0A, while I have also the Asus TF101 charger which gives 2.0A....
I will verify later the cable too.

kajornkeat said:
I heard that the OPO usb does make it charge faster too. Saw someone on this forum tested it, can't remember which thread though.
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Click to collapse
Link that the OPO usb makes it charge faster? I use a usb cable from a previous phone bc the OPO usb is too short.
mcbyte: ASUS TF101 is 2.0A? I thought it was 1.2A

kyleallen5000 said:
The title say's it all. When I use the included charger the phone charges much more quickly than when I use a 3rd party charger. I've tried a variety of different charges all with the same result. I know this was supposedly fixed in the most recent update, but it seems to still be affecting me.
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Click to collapse
it's the same with my Note 2 and my Note 8. They need 2A chargers, otherwise it's sooo slow, like the OPO.

zephiK said:
Link that the OPO usb makes it charge faster? I use a usb cable from a previous phone bc the OPO usb is too short.
mcbyte: ASUS TF101 is 2.0A? I thought it was 1.2A
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Click to collapse
Found It, http://forum.xda-developers.com/oneplus-one/accessories/charger-cable-oneplus-1-t2802484 I'm not sure if it's true though. I might try some of my 3rd party cable and compare to 1+1 cable.

kajornkeat said:
Found It, http://forum.xda-developers.com/oneplus-one/accessories/charger-cable-oneplus-1-t2802484 I'm not sure if it's true though. I might try some of my 3rd party cable and compare to 1+1 cable.
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I was trying to find a app that keeps track of the charging rate but I didn't have much luck. That would be a definite confirmation. But yeah, I would for certain want to know.
I am pretty satisfied with the charging rate right now though. Using my Nexus 5 usb with the oneplus one wall charger. Alternatively, I have the blackberry folding charger which is 1.8A charges really fast as well even though it isn't 2A.
Sent from my One using Tapatalk

battery widget
Try this puppy on for size
Battery Widget Reborn (beta)
https://play.google.com/store/apps/details?id=net.hubalek.android.reborn.beta
zephiK said:
I was trying to find a app that keeps track of the charging rate but I didn't have much luck. That would be a definite confirmation. But yeah, I would for certain want to know.
I am pretty satisfied with the charging rate right now though. Using my Nexus 5 usb with the oneplus one wall charger. Alternatively, I have the blackberry folding charger which is 1.8A charges really fast as well even though it isn't 2A.
Sent from my One using Tapatalk
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Fast Charge Notification

Does the Flex2 offer a notification when connected to a Qualcomm certified Quick Charge 2.0 charger?
I've seen that Note4 does so I was wondering if Flex2 did as well.
Thanks

stfly said:
Does the Flex2 offer a notification when connected to a Qualcomm certified Quick Charge 2.0 charger?
I've seen that Note4 does so I was wondering if Flex2 did as well.
Thanks
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Click to collapse
No, they will charge like a normal device with 5V/2A charger...this is ridiculous i know, the charger have 5V/9V mode and you never know when they activate the fast charge!
But, they charge quick enough to charge...dont mind about it!

Alright, thanks. I wonder if LG just plain forgot to enable this notification for one of the most touted features of Flex2 or they cut a very, very cheap corner.

Whenever I connect my Flex 2 to my Samsung Quick Charge charger it gives a notification saying "Fast Charging..."

jplum22 said:
Whenever I connect my Flex 2 to my Samsung Quick Charge charger it gives a notification saying "Fast Charging..."
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Click to collapse
OK, thanks. Mine is the poor man's Flex2, F510L. I hope Fast Charge is available on it.

so today i connected my phone to its stock charger the one that came with the phone and a weird thing happened my phone went into download mode and now i get the feeling that my phone isn't charging quickly as before. its only my feeling don't know if its true.
so my questions are
is the phone supposed to show fast charging notification or something like that when connected to its stock charger.(never payed attention to such details myself). and also is the stock charger even a fast charger. since my phone has always charged quickly i always assumed its a fast charger. it does say 9.0V and 5.0V under the output heading.
second
what do u think might be the reason behind that weird download mode appearance. is it the charger, the cable or the phone itself.
i have connected the charger again and again to see if it happens again but it hasn't happened yet.
i have a rooted flex 2 but i have made no system file changes because i use root for ad blocking app freezing and greenify only. no xposed installed either as i am afraid to install it.