There have been quite a few postings here on people having problems charging their XDA with thrird-party chargers originally built for the XDA I.
Add me to the list I"m on the road and can't get the damned thing charged using the charger.
However the good news is, that the problem is not the cable (or the connector for that matter). Right now I'm in the internet cafe using the USB-connection to charge the XDA II at least a little. THis is working!!
My third-partz charger is a power supply with a USB-socket, that connects with this charge-sync cable. But, its not working! This leaves two possibilities:
1) The power supply is providing a lower voltage than the XDA II requires (something less than 5.0 Volts, mazbe 4.7?). I can't check this here, but if someone with a similar problem could measure his charger voltage using a multimeter, we might find an answer. Pins to check on this site under "connector".
If this is the cause, it won't help me here, but at least we'll have the problem solved.
2) I noticed in my charger, that the USB/pins 2 and 3 ( Data-H and Data-L) are unconnected. Potentially the XDA II has an issue if these lines are floating whilst power is applied to the USB-bus. I don't know if we can check this easilz,bu if someone has an Idea?
Greetings from the Maldives 8) Sun, warm, great, but no power for my XDA!!!
mobile charger
I'm using a nokia charger, and the supplied adapter and it seesm to work fine.
MDA/XDA II Pinout - Charge Issue Resolved!!
Being back from my vacation, I immediately got into figuring out why my third party charger was not working, though the MDA II would charge through the same cable when connected to the USB-bus of a PC.
It was a wiring error in the USB-cable after all!
To figure it out I took that little adapter that comes with the original charger apart. Though the MDA/XDA II has the same pinout as the MDA/XDA I, there is a major difference in that not all GND pins are connected together inside. In order to charge, at least one of Pins 16,17,18 must be connected to ground. The grounds on pins 2 and 5 are not connected to the internal charge circuit. TO make things worse, the MDA/XDA detects an external charge power source when pin 2 is GND and Pin 22 is +5V - so the light goes on, but it still does not charge.
On my cable the USB-shield was connected to pin 18. When connected to a PC, the shield was connected at that end to Ground and all went well. On my charger supply, the shield was not connected, so it couldn't charge.
I just rewired the connector and see there it works!
So, if you have the same problem, and are handy at the soldering iron, there is a solution! For those making/selling those USB charge/sync cables, get it right the first time!
Is it safe using a Nokia Charger ?
My Nokia travel charger is rated at 6.2 V, not 5.0 as the one supplied with the XDA II
Regards
Michael
Yeah! But watch out anyway because the volatge is not the only thing to check before charging a device. The right voltage but a bad amperage can cause lots of damage...
Using the Brando USB charger woukd actually DRAIN the battery when the bar reaches yellow....
Using a Nokia charger
The Nokia is rated at 6.2 V 720 mA, the original charger is 5V 1 A.
If I understand my physics right, the XDA may draw more current that the charger can handle, so AMP vise, the danger is on the charger ?
Not that I belive that the XDA would really pull 1A, but you never know.
It would be really nice to have just one charger in the travel bag..
Regards
Michael
Suggest a USB Charger and source.
Can anyone suggest a usb charger cable and source in the UK for an O2 XDA 2 as the one that I have currently does not charge at all despite the light saying so.
xda ll charger
hi
you may get a car charger from http://www.expansys.com/product.asp?code=108736
i have had one on order for 2 weeks now may get it in the end :lol:
Re: Suggest a USB Charger and source.
bloodwynd said:
Can anyone suggest a usb charger cable and source in the UK for an O2 XDA 2 as the one that I have currently does not charge at all despite the light saying so.
Click to expand...
Click to collapse
This was the effect I had. Its a mistake in the wiring on your cable.
Thanks,
What I am really after is to find out if there is a place to find a USB cable that will work right out of the box/dodgy package that it comes in. I am not good with soldering irons or electronics and would like to buy one that is wired up correctly to charge my XDA II.
Cheers.
Related
I have an hd 2 and its a used one when i bought it. So i dont get the original charger. I got a samsung charger @ 5v, 700ma. But when i connect it, the phone shows usb detected. Though its charging, its pretty slow, i think the usb mode makes it. Taking only few 100-300ma only. And the charging takes long. I know htc need 1amp charger. But i cant get it here. So i decided to rip the charger and make some modifications ( like grounding or shorting the data pins- the middle two) . So i need a little help. Any of you guys having an htc original charger pls help me. Howz the data pins connected in the original charger? Are they shorted together or they are open? Or they are grounded? Pls help me those who know abot it. I want to make my charger form usb charging to default charging. It badly needed
send from my hd2 @ miui 1.12.2
That's weird. I've got original Samsung 0.7A charger here and HTC Desire HD does detect it as charger aswell and takes 1A from it. Shortening datapins together does usually convince most of phones that they are connected to wall charger. Maybe it's not the case for HD2.
Samsung Galaxy Phone Rapid Charger Modcheck this thread few under yours... speaking of shorting data pins.
HD2 is same as most, requires 2 data pins to be shorted together (2 inner pins).
Easy mod on most charger units. If charger is a cheap china job, the quoted 700mA figure could be optimistic ... temporary mod it by shorting data pins together & see how it performs ...
But there are 3 pins and not 4. So which ones are the middle?
send from my hd2 @ miui 1.12.2
Can you supply a good picture of this.
showlyshah said:
But there are 3 pins and not 4. So which ones are the middle?
send from my hd2 @ miui 1.12.2
Click to expand...
Click to collapse
Sorry thatz an error. I mean 5 pin and not 4. All the pins are present( which are prsent in data cable)
send from my hd2 @ miui 1.12.2
Maybe this will help ...
Is it microusb?
You're supposed to shorten D+ and D-, but rather in charger. ;P
Mister B said:
Maybe this will help ...
Click to expand...
Click to collapse
Is that micro usb?
send from my hd2 @ miui 1.12.2
Thakz dude
send from my hd2 @ miui 1.12.2
@ mister b and rebelloz ..
Thankz dude. I will click thankx button when i get to pc. Now i am frm phone
send from my hd2 @ miui 1.12.2
Very useful guide as I am facing the same problem. Thanks.
Useful guide i am also facing the same problem...
can anyone confirm if it worked for them? I made an adapter by shorting both data leads, but it didn't work for me. My phone will charge when switched off, but when it's on with both gps and data running, it barely gets enough current to charge the battery. Only my original cable works.
stanburn said:
can anyone confirm if it worked for them? I made an adapter by shorting both data leads, but it didn't work for me. My phone will charge when switched off, but when it's on with both gps and data running, it barely gets enough current to charge the battery. Only my original cable works.
Click to expand...
Click to collapse
What device?
Signalling a dumb charger with MiniUSB (as opposed to MicroUSB) is less standardized. On most MiniUSB devices it's done by shorting pin 4 to pin 5, but it varies.
I could be wrong about this (someone please correct me if I am), but I believe the transformer inside the charger will need physically replacing if you're going to be pulling more current from it. If it's not too much over the charger's rated current it may be ok, but I've burned up more than one of them by hooking it up to something that draws more than what they were designed for.
xHausx said:
I could be wrong about this (someone please correct me if I am), but I believe the transformer inside the charger will need physically replacing if you're going to be pulling more current from it. If it's not too much over the charger's rated current it may be ok, but I've burned up more than one of them by hooking it up to something that draws more than what they were designed for.
Click to expand...
Click to collapse
Depends as part of the reason of the mod is to achieve full power draw of a acceptable rated charger by making the phone think it is connected to HTC charger & thus charge at mains rate of 1A or a little above rather than USB standard of 500mA. Most chargers of reasonable quality will supply 800mA to 1.2A & if you buy wisely a bit higher.
Issue arises on cheap china chargers with false specs that actually only handle 500mA & perhaps 800mA max for short bursts but when these are forced to supply more will fail.
A good quality charger will have no problem supplying full charge to a HTC handset ...
A good example - getting a non-iDevice to pull its full rated charge current from an iPad charger (charger rated 2.1A, but nothing but iDevices will pull any more than 500 mA from it without modifications.)
A good example of cheap Chinese chargers - the "1A" chargers carried by Monoprice. They're good for 300-400 mA at best. You won't burn them out as it's a fundamental current limit setting of the SMPS chip, but the voltage will droop if you try to pull too much out of it. It's the only Monoprice product I've ever been disappointed with.
Originally Posted by stanburn
can anyone confirm if it worked for them? I made an adapter by shorting both data leads, but it didn't work for me. My phone will charge when switched off, but when it's on with both gps and data running, it barely gets enough current to charge the battery. Only my original cable works.
Click to expand...
Click to collapse
What device?
Signalling a dumb charger with MiniUSB (as opposed to MicroUSB) is less standardized. On most MiniUSB devices it's done by shorting pin 4 to pin 5, but it varies.
Click to expand...
Click to collapse
sorry about that, I have the HD2. if I use the replacement cable with both data lines I shorted, it never charges when the phone is running. but if I swap my original cable the phone charges normally.
it's as though it ignores the shorted data lines, or maybe the HD2 doesn't really work that way?
I'm worried because my original cable is beginning to show signs of wear and tear.
Sent from my HTC HD2 using XDA
Hi I bought what I believe to be a Wopad V7+ ..
The ac/dc power supply broke and it's tough to find a compatible plug (very tiny) ...I'm waiting for a hopefully compatible charger to be shipped...
The tablet is officially not rechargeable/powerable via the micro-usb but I wondered if someone could point me to a (noob-friendly) way/HACK to make it rechargeable or at least powerable via USB ?
I can't post external links but I know it's powered by 5v 2A and you can find the pictures/information at dealextreme. sku104916 or at wopadusa.com store It seems to be AKA: HAIPAD M8 /Zixoon V78c / McPad V7+ / MOMO 1000 (BUT Resistive touchscreen)
You can see the internal components on a youtube video v=8SiLWpLCfus
there is pics of internal on twitpicDOTcom (/photos /bjlandsberger)
OR THERE : chinadigitalcommDOT com (/ haipad-m8-vimicro-vc882-t10830-10 DOT html)
or http twitpic DOT com ( /6i0ouo/full )
These pics/video aren't mine as I didn't DARE to open mine.
I apologize if my english makes your eyes bleed. Any help is welcome
USB can't provide 2A of current you'll have to buy a new charger
Sent from my X10i using XDA App
nugget1993 said:
USB can't provide 2A of current you'll have to buy a new charger
Sent from my X10i using XDA App
Click to expand...
Click to collapse
that shouldn't matter. It would still charge, just much slower. Just cut open the charging wire and a USB wire. Find which wire is positive and negative on your charging wire. connect the red usb wire to the positive wire in the charging cable. Connect the black wire to the negative wire. Insulate. It should charge.
Note- if you switch the wires, you can permanently screw up your tablet.
This. Just be extra sure not to cross up your wires, I did this once with a USB hub and fried the board. It literally left melted plastic on my desk.
Epic_VS said:
that shouldn't matter. It would still charge, just much slower. Just cut open the charging wire and a USB wire. Find which wire is positive and negative on your charging wire. connect the red usb wire to the positive wire in the charging cable. Connect the black wire to the negative wire. Insulate. It should charge.
Note- if you switch the wires, you can permanently screw up your tablet.
Click to expand...
Click to collapse
It's a 3.7v battery which means it can charge at 5V. Looks dooable with a .5A Regulator and a 1ohm resistor... I'd try this and if it fails, then you've tried and failed
So it is a 3.7 but the problem is that is a raw battery pack as in no protection, no regulation, no charging circuit. If you want to sit there and babysit you could attempt to put 5.0V on the power lines and that might work. I would say it is dangerous to do so.
Epic_VS said:
Connect the black wire to the negative wire. Insulate. It should charge.
Note- if you switch the wires, you can permanently screw up your tablet.
Click to expand...
Click to collapse
No risk of fire/explosion ? What would be the best way to insulate ? heat Shrink tube + tape ?
I planned using a ACDC inwall 110 to USB 5v 1A out adapter, would it be risky ?
Will I have to babysit it to prevent a fire ???
Errrr...
.5A Regulator and a 1ohm resistor.. Maybe with a graph and picture I could figure how to do it ... I don't know anything about electronic/tension ohm's law.. I don't want the battery to explode and rip my head apart.
No matter, go for it, it will be OK, all li-ion batt used in mobile device have a small protection circuit in it(unless specified) ur batt too have it, use heat shrink tube, a 100-300ma USB current can't make it explode.
Sent from my HTC HD2 using XDA App
moto xoom...
Hmm....is this possible to do? If so I would like to try it on my Xoom, the little pin charger is annoying I bent the hell out of it. Micro USB would be stronger . All pros no cons.
For the most part putting 5V on a 3.7V load is not overly dangerous. In order for you to charge a battery, the voltage being applied to the battery has to be greater than the potential storage of the battery. In this case, greater than 3.7V. My blackberry charger is 5V regulated output.
We use 3A power supplies all the time to charge 12V batteries. The voltage we set it to is 14V. These power supplies aren't smart. They just dump current. The higher the voltage pf the battery gets, the lower the current gets as it starts to resist the current that is coming into it. Even your cars alternator puts out 14V and yet the car battery is 12V. For the most part, the actual voltage of batteries is 10%-15% higher than what it is rated at as well. So your 3.7V battery is more like 4.05V - 4.20V when it has a full charge.
But, this is not going to give much big problems. As the current is only 10-20% of the original batt amp, so it will be ok, but for high current ratings the voltage must not be more than 1-1.5 v higher than the batt voltage.
More over the ditachable batt of most phones /pda have inbuilt i-v regulator inside the batt. It will prevent overcharging and deep discharging on most cases.
Sent from my HTC HD2 using xda premium
WOW thanks a lot for the informations, if my RMA doesn't go as I want I'll probably settle to try this and keep this post updated.
Thanks a lot. XDA is great.
My two other (unanswered) threads:
http://forum.xda-developers.com/showthread.php?t=1477288
http://forum.xda-developers.com/showthread.php?t=1480517
I tried swapping out the USB cable that came with my nexus 7 with a longer usb cable (still using the same charger though edit: by that, i mean the ASUS charger that came with the N7). It doesn't seem to be charging though, even though it says 'charging' on the screen. When i was using the nexus 7 while plugged in, i actually lost 1% charge after using it for like 30 or so minutes.
I think i grabbed this cable off Ebay. It had no trouble charging my phone. Are there different grades of USB cables or something?
By same charger do you mean the one it came with? The 2 amps charger. Sorry I had to clear that bit up. I think longer cables creates more resistence but I'm not sure if the cable length is significant enough stop charging. I have no idea about grades of USB cables though maybe someone can elaborate on that.
Summerfly said:
By same charger do you mean the one it came with? The 2 amps charger. Sorry I had to clear that bit up. I think longer cables creates more resistence but I'm not sure if the cable length is significant enough stop charging. I have no idea about grades of USB cables though maybe someone can elaborate on that.
Click to expand...
Click to collapse
Yes, the ASUS charger it came with, i plugged in the 6 foot microusb cable i bought off ebay into it.
MFister said:
Yes, the ASUS charger it came with, i plugged in the 6 foot microusb cable i bought off ebay into it.
Click to expand...
Click to collapse
Okay, 6 foot cable doesn't sound excessively long. I have to ask what were you doing on it while charging and what brightness setting was the screen at. Maybe you were draining more power than the charger can provide?
This is pretty common. The stock cable has larger conductors, as I assume other 2 amp chargers come with, and standard cables are sensed somehow and charging current is limited. Try finding a 22awg cable, I think it will work.
I use a USB extender since I don't have any outlets near my bed. I use a cable rated for USB 2.0 and haven't had any problems. I have had problems with cables that aren't. The Motorola USB cables are rated for 2.0 and they all work fine for me with no problems.
burpootus said:
This is pretty common. The stock cable has larger conductors, as I assume other 2 amp chargers come with, and standard cables are sensed somehow and charging current is limited. Try finding a 22awg cable, I think it will work.
Click to expand...
Click to collapse
Thanks, i assume this cable that's 28/24 awg would work?
http://www.monoprice.com/products/p...=10303&cs_id=1030307&p_id=8643&seq=1&format=2
I use a cable extender, but I insert the original stock cable into the tablet (not the charger). It appears to recognise that and charge at the correct rate.
I've tried using a usb extender to charge with the asus charger and the Asus USB cable and checking with battery graph it charges much slower compared to using just the Asus cable.
People with eyesight better than mine will see that the micro USB socket has 5 pins and the Nexus looks at the 5th pin to decide what is connected and what the connected device is allowed to do. The pin can be grounded, not connected (floating) or can be connected to ground via I think 3 fixed resistances. Google for USB on the go. I think that is the standard adopted by Asus and the cable doesn't comply.
I'm using a nook 1/2 cable I got with a car charger for the nooktablet
It works and is longer then the stock cable it came with.
Sent from my Nexus 7 using Tapatalk 2
EE here. I just ran into this issue recently, so I'll share what I learned. Grab a multimeter and measure the resistance of the cable. Check all 4 pins just in case one of them is worse than another.
In my case, I had a really horrible USB extension cable. It measured about 4 Ohms. 4 Ohms is low enough for a multimeter to pass a continuity test, but do out the math:
V = I * R
V = 2A * 8 Ohms (4 Ohms on VCC, 4 Ohms back on GND)
V = 16V.
16 volts?? Where does 16V come from? Short answer: It doesn't. If 2A were actually flowing, the USB cable would have a 16V drop across it. It doesn't though, which tells us that 2A is not flowing. 1A is also not flowing, since that would still be 8V.
0.5 Ohms is a good estimate for a MAXIMUM resistance for a USB charging cable. That's a 1V drop at 2A, meaning the phone is only getting ~4V. That explains why the USB cable that comes with the Nexus 7 is so darn short - it comes in at around 0.1 Ohms (or perhaps less, that's about the limit of what I can accurately measure)
Wanted to get a longer USB cable that will work the Asus adapter, any links?
Thanks.
came across this thread while investigating a strange thing in charging my 4400mah extended battery of my s3.
I have a 5v 1A stock samsung charger with an extension cable i was always using to charge my old phones with a less capacity battery (mugen 3200mah)
This night i spent i wasnt ble to get a full charge from 5% to 100% in 8 hours and this sounds more than strange, but yet understandable.
i will try timings with the stock cable without extension and i'll come back...
I have not done much research to find out why, mainly because most discussion is in Chinese. It seems that the device cannot charge properly without the stock Meizu cable. Does anyone know why this is? It appears to be a standard MicroUSB cable.
I'm using a Kindle Fire charger right now and it's charging fine.
Sent from my M030
and the stock white cable right? Charging off various sources isn't a problem. The problem is the cable.
AdamOutler said:
and the stock white cable right? Charging off various sources isn't a problem. The problem is the cable.
Click to expand...
Click to collapse
My Meizu cable is black and that works just fine as well
Sent from my M030
If you can give me the link to the Chinese discussion, I can translate and roughly summarise the discussion and findings (if any) for you.
It might be just like the Nexus 7 discussions where people think the magic is the cable, but then you find out that when they change the cable they also were using an iPad charger...
Don't you have an MX Adam? Easy enough to test a few combos.
Charges fine on both my lg, Meizu and any other micro usb cable.
The charger is the magic here...
This device needs 2amp input to charge properly.
If your charger can't provide this you get flicker charges.
I think MrColdbird is more-or-less right.
My Meizu MX (4-core) charger looks like it's rated at 1.2A. Charging with a lower-power charger usually does not work, and even my portable battery pack with its 1.5A output only works while the external battery is at least half-full.
However, I also have a couple of 0.5A chargers that seem to work OK, and it charges OK from the USB ports on my laptop, which I think are 0.5A. All-in-all, it's very choosy when it comes to chargers! But you're right, the cable isn't really the issue.
Charlie
I don't know what's going on. I'm using a Nexus7 charger, a samsung charger and my computer. All three require the Meizu-White cable. Standard MicroUSB fails.
Are you guys using CN or HK versions? Mine's an HK.
Should be easy enough to test. Just measure for any resistance between the pins on the uUSB side of the completely unconnected cable. If you find any resistance between GND and ID, or between any other pins, they're playing games with us!
HK here to Adam.
So this adds to the mystery as well.
i got the mx032 as well, and the problem is the charger.
works with my following chargers:
-htc 12V (1A)
-ipad (2.1A)
-sony xperia (850mA)
-motorola milestone
doesn't not work with:
-samsung travel adapter (700A)
-noname 12V (1A+2.1A)
E:V:A said:
Should be easy enough to test. Just measure for any resistance between the pins on the uUSB side of the completely unconnected cable. If you find any resistance between GND and ID, or between any other pins, they're playing games with us!
Click to expand...
Click to collapse
Sometimes, I have such a situation
My M031 charges with Nexus 7 charger and cable.
Little help chaps.
Ok i've just bought this http://www.ebay.co.uk/itm/390566738301
I presumed (not sure if rightly or wrongly) that it would be sufficient to charge my Nexus 4
I'm using an older usb cable I've got to charge it in my car however if i'm using navigation then the battery still decreases.
I've got a funny feeling that the cable is the culprit but i'm not 100% sure.
Is there anyway to monitor how much juice your phone is getting from the charge?
P.S in the battery monitor screen it says AC not USB
Thanks in advance for any help
Stret
Battery monitor widget pro. It monitors the mA that's being used, mV, etc. Maybe the phone is pulling more mA than the charger is supplying.
You need to go into your battery settings/status while your phone is plugged into your car charger.
It will show one of two statuses:
Charging(AC) and Charching(USB)
If it is showing charging(USB), then the phone is detecting a false data connection. This can be solved by taking apart your USB charger and soldering the middle two pins of the USB. These pins are the Data(+) and Data(-) pins. I attached an image of the two Data pins soldered together on the usb charger.
If it is showing Charging(AC), then your USB charger is not pushing enough mA to charge your phone. Most cheap car USB chargers are in the 500 mA to 700 mA range. The stock USB wall charger that comes with your Nexus 4 is 5V 1200mA.
t989BeLikeItDo said:
You need to go into your battery settings/status while your phone is plugged into your car charger.
It will show one of two statuses:
Charging(AC) and Charching(USB)
If it is showing charging(USB), then the phone is detecting a false data connection. This can be solved by taking apart your USB charger and soldering the middle two pins of the USB. These pins are the Data(+) and Data(-) pins. I attached an image of the two Data pins soldered together on the usb charger.
If it is showing Charging(AC), then your USB charger is not pushing enough mA to charge your phone. Most cheap car USB chargers are in the 500 mA to 700 mA range. The stock USB wall charger that comes with your Nexus 4 is 5V 1200mA.
Click to expand...
Click to collapse
Yeah it definitely shows AC was the first thing I checked, so what your saying is that link o posted above is actaully a false claim to how much power it knocks out?
Stret
Stretlow said:
Yeah it definitely shows AC was the first thing I checked, so what your saying is that link o posted above is actaully a false claim to how much power it knocks out?
Stret
Click to expand...
Click to collapse
Hard to say. From my experience, you get what you pay for. A USB charger that cost less than 2 GBP seems unlikely to support the kind of mA throughput that the Nexus 4 requires.
Some ways to check this are to check the power supply and draw through a battery monitoring app, use a different USB cable or the USB cable that came with your Nexus 4, or take apart the USB charger and inspect the hardware to see if it actually is built to support a 2A supply. That last one is a bit of a headache.
Here is an iFixit teardown of a similar USB charger which goes into detail about some of the working parts of a car USB charger.
To quote the final part of the iFixit teardown:
Quite simply, the device is a rebadged 500mA or 750mA USB charger at best. It is NOT 1A capable, despite what the sticker on the body says.
Click to expand...
Click to collapse
Good luck!
t989BeLikeItDo said:
Hard to say. From my experience when it goes about this type of gear is that you get what you pay or. For a USB charger that cost less than 2 GBP it seems unlikely that it would support the kind of mA throughput that the Nexus 4 requires.
Some ways to check this is to check the power supply and draw through a battery monitoring app, use a different USB cable or the USB cable that came with your Nexus 4, or take apart the USB charger and inspect the hardware to see if it actually is built to support a 2A supply. That last one is a bit of a headache.
Here is an iFixit teardown of a similar USB charger which goes into detail about some of the working parts of a car USB charger.
Good luck!
Click to expand...
Click to collapse
Thanks for your help mate
Stretlow said:
Thanks for your help mate
Click to expand...
Click to collapse
No problem! You should try and remember that the Nexus 4 is a pretty sophisticated piece of hardware. I'm not advocating that you go out and spend 20 GBP on equipment, but you don't want to use a cheap generic piece of trash to interface that electrical connection. The build quality of your charger can put your handset at risk to being damaged by electrical shorts and/or heat.
I would liken it to parking your sports car in a cheap parking garage on the bad side of town. Sure, you can do it, but there are risks involved!