yashsingh1/xdaforums huggingface dataset:
[Defy Q&A, Help & Troubleshooting] Zephyrot:
The problem you guys are facing is not related to the current, but to the pins used by the cable in the USB interface.

The defy will only charge if it is connected with a full USB connection.

Not all the USB cables come with all the pins, I for example have one for my Bluetooth headphones that only has power and it does not charge my defy but it does charge my hd2.

Gesendet von meinem CM7 Defy
[Defy Q&A, Help & Troubleshooting] rogier666:
The problem persists when I use the Motorola cable with a non-Motorola adapter.

When I use the Motorola charger adapter together with non-Motorola USB cables my phone charges OK.

So the problem has nothing to do with cables and pins.
[Defy Q&A, Help & Troubleshooting] Zephyrot:
It has to do with cables and pins.

If your cable has all the pins (normal data USB cable) but your adapter doesnt have them connected is the same thing as having a USB cable with only power pins.

Check out cables diagrams to see how them work.

There is even a hack for some HTC phones, where you actually short some pins on the cable so the phone think it is connected to a wall charger and not a USB port, allowing the phone to use more than the 500 mah the USB can provide (useful for car adapters).

This is fact, I'm not pulling it out of anywhere hehe :)

I charge both my Defy and the HD2 with the same HTC charger, and I have a extra USB portable battery, which charges the HTC but it doesnt charge the Defy, both are running CM7.... the issue? the danged chinese battery only has power pins and the phone refuses to charge from it @_@ it does charge my Bluetooth Headphones and the Camera :P
[Defy Q&A, Help & Troubleshooting] rogier666:
My non-Moto 1000 mA and 850 mA adapters make my screen go wild, but they charge my Motorola Defy.

If it was a cable/pin issue they wouldn't charge my phone at all.

If I plug my knockoff 500 mA adapter in my Nokia USB port (which is for data only, not for charging) my old Nokia pops up a "USB data connection detected" message.

Not all charger issues are due to cables and pins. Sometimes its the output voltage and current that messes things up.
[Defy Q&A, Help & Troubleshooting] Zephyrot:
I know not all issues are related to the cable and pins, but this specific issue with the Defy not charging is.

Both your chargers comply correctly with USB charging standards then.

Notice this also happens on the Droid, and shorting both Data pins allows the phone to charge. And can be read on the forums that it works too with the iPad ;)

Anyways, here is what happens to the defy:

http://en.wikipedia.org/wiki/Universal_Serial_Bus

"There are also devices at the host end that do not support negotiation, such as battery packs that can power USB-powered devices; some provide power [...]. USB power adapters convert utility power [...] to run attached devices. Some of these devices can supply up to 1 A of current. Without negotiation, the powered USB device is unable to inquire if it is allowed to draw 100 mA, 500 mA, or 1 A."

There you go, no Data pins = Defy do not draw power, not charging.

I would like know if it charges shorting Data pins tho.

All that is required is short both Data pins with each other, doesnt matter if its on the cable or the charger.
[Defy Q&A, Help & Troubleshooting] rogier666:
A bit of copper wire taped to the middle pins of a USB entension cable plug made no difference with my 500 mA adapter. It still refused to charge my Defy, even though it charges my Nokias and SEs.

Yes, there are other ways to connect pins, but I opted for a non-destructive method so I didn't strip the wires to short them.
[Defy Q&A, Help & Troubleshooting] pprakash:
Mine works fine with Motorola 500 ma charger which came with Motorola XT3, Dual port USB car adapter which is rated @ 2x1A,
[Defy Q&A, Help & Troubleshooting] arvs0z:
I don't think it's the current that is causing this issue.

Try to plug your phone to your PC via USB connection and see if it can charge itself. A PC's USB port provides 500-600mAh and 5.0V as default.

I also don't think it's about the data pin issue because I've tried using my old BB's hacked data cable (white and green cables are cut from the USB female tip meaning there's no current flowing to the data cables connected to the mini-usb tip) and my PC has no problem charging it (no usb connection of course), even the supplied motorola charger for defy.

It can be your adaptor's voltage issue because I have a broken cheap adaptor that can charge my mi-fi modem but can't charge my other devices. Turns out it only outputs 3.5-3.8V
[Defy Q&A, Help & Troubleshooting] ejstubbs:
I agree. I also believe that it's not to do with the data pins. I did some testing a number of different charging sources I have around the house. Here are my results:

Motorola USB charger (reference): data pins shorted (~1 Ohm), output voltage 5.1V

Combined battery/USB charger: data pins shorted (~1 Ohm), output voltage 5.3V

Mini DV camera USB charger: data pins open circuit, output voltage 4.9V

Belkin 12V car USB charger: data pins open circuit, output voltage 5.1V

PC USB port: data pins connected for data but appear as DC open circuit, output voltage 5.08V

Note that the USB standard is for the output voltage to be 5V +/-5%, which is 4.75V to 5.25V.

The Defy charges happily from both the Motorola USB charger, and from the PC USB port. That is as expected.

The Defy will also charge from the Belkin 12V car USB charger: that device is open circuit between the data pins, so that doesn't seem to be a critical factor which could prevent charging. It won't charge from the mini DV camera USB adapter: I put that down to the output voltage being too low (although it's actually within the USB spec).

With the combined battery/USB charger (the same model as shown in post #5 of this thread), the Defy charges but the screen is unresponsive - sometimes it even takes on a life of its own! I put that down to the output voltage being too high; it's certainly outside the USB spec. (I'm toying with the idea of replacing one of the Zener diodes on the PCB inside the charger to see if that will bring it within spec. It's only a cheap charger and the Zener diode would cost pennies. Even if I SNAFU the USB output, the battery charger pins should still be OK. Incidentally, I checked their output voltage and it seems to be bang on spec at 4.2V.)
[Defy Q&A, Help & Troubleshooting] rogier666:
It's hard to believe that it won't charge with your Mini DV charget at 4.9V due to the voltage, because then it wouldn't charge from a computer USB port that stays within the specs as it spits out 4.9 (or even 4.5) V.

If we can rule out the pins and the current, what's left?

- Stability of the output. The ripple voltage of a cheap no-name adapter could be too high for the Defy battery.

- Regulated versus unregulated power supplies. If you connect a knockoff (unregulated) 5V/500mA adapter to a battery that tries to draw 850, the potential could drop a full volt or more. That would be below the USB specs and possibly below the battery voltage.
[Defy Q&A, Help & Troubleshooting] MrBelter:
Since posting that i have found out it wont charge of a Tesco own brand in car charger (charges a X10 mini pro fine) but the defy just showed as USB connected but no chatging too place, it does work using a Belkin micro in car charger.
[Defy Q&A, Help & Troubleshooting] ejstubbs:
It seems the voltage wasn't the problem with that charger, it was the data pins not being shorted together. I disassembled it and did a bit of circuit board surgery to fix that, and now the Defy charges from it with no problem. The charger is rated at 500mA and the Defy seems to pull about that much (judging from what Battery Monitor Widget reports).

I also tried swapping the zener diode on the battery/USB charger. Unfortunately it seems that my PCB surgery skills aren't quite what I'd hoped after that first successful mod... The first time I plugged it in and switched it on, it gave out an audible "crack", so I turned it off again quickly. After a visual inspection which turned up no obvious bridged tracks or other problems, I tried again. This time there was a sizable "bang", accompanied by smoke :eek: and the RCD tripped out. Whoops! Looks like I need to order a new charger. Still, when it arrives I can check whether the new one's output voltage is within spec, and whether it charges my phone OK, so all is not completely doom and gloom :D
[Defy Q&A, Help & Troubleshooting] :
I had all sorts of problems when trying to charge the defy off samsung chargers. The screen would become unresponsive to the point that I could not draw the unlock pattern, or use swype at all - however, the battery would charge perfectly well. This does not occur with the motorola charger.
[Defy Q&A, Help & Troubleshooting] jumika:
higher voltage

Hi guys.

I know, that this topic is not exactly about the same subject, that i want to discuss, but i give it a try.

I have a solar powered chinese made charger which have a battery. It says the output voltage is 5.5V on the usb port. I want to ask you, that can this higher voltage harm the battery or the phone itself? I hope some electronics expert may take a look at this topic, and can answer my question.
[Defy Q&A, Help & Troubleshooting] labsin:
I have a 1A 5V adapter from HTC that works. Use it all the time cause It came with an English adapter.
[Defy Q&A, Help & Troubleshooting] ejstubbs:
Update: I ended up ordering another two of the combined battery/USB chargers (they're cheap as chips from China on eBay) one with a UK adaptor and the other with an EU adaptor.

One of them outputs 5.29V. The phone charged off that one OK, with no apparent odd behaviour while charging. However, when I took the phone off the charger, the screen became unresponsive and seemed to be generating random, phantom screen taps. That was similar to what I had seen with the first battery/USB charger (the one I subsequently destroyed by cack-handed PCB surgery) but in that case it happened when the phone was connected to the charger. Overall, then, nul points for that one.

The second one outputs 5.3V but successfully charged the phone from 7% to 100% with no odd behaviour either during charging or afterwards.

So it looks like you take your chances with these cheap chargers. If you get one that works then it is quite handy to be able to charge batteries both outside and inside the phone. If you get a flaky one, like I did two times out of three, then at least you can still charge batteries out of the phone which could be useful if you anticipate needing to carry a spare, charged battery to get you through a period "off grid". (From my failed PCB surgery I can confirm that the circuit which charges the battery outside the phone has its own, seperate voltage control - output measured at 4.2V - and the reverse voltage charge complete detection seems to work OK as well.)

However, at my hit rate of one good charger out of three, they end up working out rather more pricey than first appears!
[Defy Q&A, Help & Troubleshooting] george101:
any one tried charging defy with Nokia Fast Micro-USB Charger AC-10? its rated at 1200 mA

or the Samsung Charger ATADU10IBE ?
[Defy Q&A, Help & Troubleshooting] webbimato:
Almost every night (ac-10e). Also Nokia ac-6e (550mA) chargers work. Pretty much anything with a micro-usb has worked just fine.
[Defy Q&A, Help & Troubleshooting] votopec:
I have also problems with screen. It registers touches everywhere, but only when I connect to my laptop USB.

This creates quite some problems if I want to program something via USB and test it.
[Defy Q&A, Help & Troubleshooting] Defiant one:
Charging Lithium Ion Batteries

Just got my Defy+ after considering for about a few weeks between Razr and Defy+...

Anyway, from the discussion here, I still can't see any solution apart from using the original Moto charger/ car charger. The problem seems almost like only surfacing on a phone to phone basis.

Anyway, I was checking out some info about Li-ion and Li-ion polymer battery dis/charging and I thought maybe the link below could be an interesting read for people who doesn't already know.

Bear in mind the voltages mentioned in the batteryuniversity links below are those that are applied to the battery cells - not the voltages to the "go-in-between" charging circuits (that's in the phone or charger).

http<colon><fwdslash><fwdslash>batteryuniversity.com<fwdslash>learn<fwdslash>article<fwdslash>charging_lithium_ion_batteries

http<colon><fwdslash><fwdslash>batteryuniversity.com<fwdslash>learn<fwdslash>article<fwdslash>the_li_polymer_battery_substance_or_hype

Sorry I'm not allowed dot post direct links yet

And as the last paragraph of the Li-Poly battery link mentioned: "Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a special charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some Li-polymer in a foil package to swell, and equipment manufacturers must make allowances for expansion."
[Defy Q&A, Help & Troubleshooting] taarmen:
I have the charger problems as well. But i recon it's because of the cable, the moto one has to pins on both sides normal ones only have two on one side.
[Defy Q&A, Help & Troubleshooting] adiq_ambro:
Just remember, than the more current you use for charging, the more gap from full charged capacity your battery will get.
[Defy Q&A, Help & Troubleshooting] scrannel:
The 4th post here suggests these are not pins but springs:

http://xdaforums.com/showthread.php?t=1458623
[Defy Q&A, Help & Troubleshooting] ejstubbs:
That was my post (actually this one)and they are

definitely

not pins. Look up the micro USB spec eg on Wikipedia - the data and voltage pins are

inside

the trapeziod shell or sheath, which connects to system ground to provide static protection for the electrical connections within.
[Defy Q&A, Help & Troubleshooting] Zoxrolf:
More data points and changed loading behaviour

I bought a bicycle charger (E-Werk) for my Defy. Direct connection E-Werk to micro USB did not work but e-Werk to USB female followed by normal micro USB data cable does work.

Loading behaviour: the decive loaded when i start moving. It stopped loading when I stopped moving; after re-starting it did not re-start loading until I unplug/replug.

In early June, suddenly: The device starts loading when I re-start after traffic lights!

Going up into the flat, the device refuses to load from mains, at least USB loading still works.

Uninstalling Battery Defender, the Defy shortly displays the 'Charging' symbol but only while I stay in the lock screen and do not touch the phone.

Re-installing Battery Defender, the phone never shows the 'Charging' symbol on Mains. My speculation is that the first 'pull battery status' action makes the phone discover that it is not really charging.

Can Google send a "Service update" to change the battery charging behaviour? Can an App update pull a service update for a changed battery charging behaviour?

how can I get back the ability to charge from mains?

zoxrolf
[Defy Q&A, Help & Troubleshooting] rogier666:
Did anyone ever check the real output of the original charger that came with the Defy?

I bought a non-motorola battery, tried to check if it really had the 1600 mAh capacity that was printed on the label (I measured 1570 mAh, which is within 2% of the claimed capacity), but when I first tried to measure my battery capacity I got strange results.

So I measured the output of my Motorola charger that came with my phone. The voltage was as expected, but the current was higher. My charger has 850 mA printed on it, but the real output was between 1000 and 1100 mA.

Is my Motorola charger a unique better-performing oddity or did anyone else measure the output and found funny numbers?
[Defy Q&A, Help & Troubleshooting] snurrbo:
I charge my Defy with:

- Original Moto Defy charger, OK

- SonyEricsson Xperia charger, OK

- HTC Wildfire S charger, OK

- Iphone 4s charger, OK

- Toshiba AT300 charger, OK

- Belkin Smart USB Charging Station, OK

- Nokia E523 charger, OK

- 1A Car usb charger from dx.com, NOT OK, instead of charging it sucked the power out of the phone . :eek:
[Defy Q&A, Help & Troubleshooting] rogier666:
I once bought a charger from DealExtreme and it exploded when I plugged it in. Fortunately my phone survived and nothing caught fire.

If you have to plug it into the wall, NEVER buy it from dx.com!
[Defy Q&A, Help & Troubleshooting] TJKV:
Here is an interesting link, this guy tested various USB chargers in detail. Very good read for everyone thinking of or actually using different chargers...
[Defy Q&A, Help & Troubleshooting] runeupo:
i use both a small iPhone usb charger with non Motorola usb cable and also the standard defy charger with Motorola data cable.

the original goes faster, full charge is around 2 hours <> 2,75 hours
[Defy Q&A, Help & Troubleshooting] yellowbal:
As long as the charger is good quality it should charge your Defy no problem. I like the Motorola, Lg, Apple chargers.

MicroUSB is a standard so it shouldn't be too tricky. Check your charge rate by looking at the battery stats. If it says (AC), then it'll use up to about 800ma. If (USB) then only about 500ma, which results in a slower charge.
[Defy Q&A, Help & Troubleshooting] viamais.net:
The original charger broke my Defy to replace it I have two options, which one would be the best:

- Another Motorola smartphone charger with output 5V / 550 mha, or

- A Nokia charger with output of 5.7 V / 800 mha.

Which one would be best to use on my Defy?
[Nexus S General] Mudblood69:
I want to oem unlock my phone so that I can root it. That obviously wipes it. What's the best way to back up the phone without root access to keep all app data, game progress, SMS records etc?

Thanks!
[Nexus S General] ballasdontcry:
titanium backup, it's free on the market
[Nexus S General] shrivelfig:
Titanium Backup needs root to work ...
[Nexus S General] VAgathon:
App data needs root to be backed up, doesn't it?
[Nexus S General] matt2053:
You don't have to unlock the bootloader to get root though.

So you can:

1) root

2) backup

3) unlock bootloader

4) flash whatever you want
[Nexus S General] Mudblood69:
I would do that, but which method lets you root without unlocking boot loader?

http://xdaforums.com/showthread.php?t=931865 <-- that only works for 2.3.2 and before (i have 2.3.3)

http://xdaforums.com/showpost.php?p=11626567&postcount=70 <-- that seems to require a rooted 2.3.2
[Nexus S General] matt2053:
Maybe Gingerbreak or SuperOneClick?
[Nexus S General] Mudblood69:
oh trueeee, gingerbreak still works for 2.3.3 + nexus s
[Samsung Mesmerize] BakedTator:
First off, this is a physical mod!!! you do this at your own risk!!!

Second, i seen this mod in the captivate section of xda and i cant find the OP so that i can give the guys credit, but credit goes to him for doing this to his captivate!!!

after i seen the thread about this i noticed that my friend, who has a captivate, had a chip in the ear piece and it was silver with black paint on top of it. after seeing this he said "Take it off!" and so i did...after doing it i seen it looked rather cool so i took a knife and started scratching the black paint off of mine. i think it looks good and gives it kind of an accent from all the black on the phone. If you decide to do this to your phone, please be careful when doing it and take your time. you dont wanna take this piece out or make it sharp and end up cutting your ear 1 day when you answer your phone, so again, please be careful when doing this mod!!!

FYI : Once you do this you cant undo it....unless you get some good paint and know how to paint this without filling the holes with paint!!!
[Samsung Mesmerize] KillKount:
Just did this, and I must say, it looks amazingly awesome. It also kinda smoothed the face down, making it seem more slick.
[Samsung Mesmerize] BakedTator:
good...im glad you like it as much as i do...just gotta be gentle with it while doing it!

btw...i love your avatar!!! roy mustang ftw!
[Samsung Mesmerize] add144:
This reminds me of what I did with my iPod. I took a fine grain sandpaper and sanded the back of my iPod. Looks great now. Unorthodox mod to what we normally see but I dig it Tator, thanks.
[Samsung Mesmerize] sageDieu:
What exactly do you do, just scratch off the paint there? Sand it?

I've also been wondering, on older phones you could use a sugar block and scratch off logos like the us cellular or samsung logo. Can we do that?

Sent from my MIUI SCH-i500
[Samsung Mesmerize] scarmon25:
I just taped off around ithe speaker grate and used my pocket knife's small blade and she's silver and no scratches. keep in mind I keep my knife extremely sharp and was very very very gentle. It took about 5-10 minutes. Thanks tator. Kinda like the new look.

Edit, Also once you scratch most of it off. an damp alcohol pad seems to remove the remnants really well

Edit: OK so this is how I did it and have no scratches what so ever.

I taped the phone to my desk at work. then taped around the speaker.

Used a Knife to gently scratch off as much of the paint as I could.

Took a toothpick and cut one end as to make a sharp blade on the end and used this to "rub"off the paint down in the crease.

Then wet a q-tip and rubbed the remianng paint of the ear piece.

Hope this helps some that are wondering a way to do this.

I wish I wasn't at work. I would post a pic. Honestly it looks like it was made this way.
[Samsung Mesmerize] BakedTator:
just use a sharp knife...and be uber careful....and scratch it off

im guessing this should work the same for showcase as well as the fascinate too....but it would take someone trying and reporting back to verify!
[Samsung Mesmerize] Mopuzi:
I just did this to my mesmerize and it looks great it does look like it came put of the box this way adds a nice little accent to the face of my phone. Thanks for the idea
[Samsung Mesmerize] BakedTator:
np....its what i do :)
[Samsung Mesmerize] jpaulwaite:
you were baked, weren't ya tator? :-)
[Samsung Mesmerize] sageDieu:
I can confirm that this can be done with a dime and get a reasonably good result. I didn't have a knife handy but I did have some change so I scraped a dime across it until it turned silver. Looks fine. Not perfect, I will probably touch it up with a knife later, but it isn't bad and it didnt scratch the surrounding area. I wasn't even careful :P

Sent from my CM7 SCH-i500
[Samsung Mesmerize] BakedTator:
well good stuff...get the rough crap with a dime...do the finer detail with a knife...will add this info to the OP
[Samsung Mesmerize] BakedTator:
sober as a nun sir!!!
[Acer Iconia A500] xjarl:
Any idea about your Iconia accessories? Shells? Case? Ac adapter? Car charger?? screen protecter？ OH... I have only an Ac adapter and a USB Cable now...

1, Ac adapter: Wall plug, Desktop,1.5m Cable
[Acer Iconia A500] hurrpancakes:
A charger with a longer cable.
[Acer Iconia A500] xjarl:
Yes..

Maybe a few days...
[Acer Iconia A500] panda.bear:
If you are talking about ideas for accessories I would love to see an extended battery that plugs into the docking port and piggybacks on the backside of the device. Even better if it had a build in SD card reader (or at the very least micro sd card storage), maybe a second usb slot thats recessed into the design so we don't have to worry about snapping off thumb drives that stick up in the air, and even cooler could be a plastic horn molded into the attachment to reflect sound from the rear emitting speakers towards your ears! Oh yeah, and it could have a rotating kickstand!
[Acer Iconia A500] jibweb:
how about a real docking station? with USB ports normal hdmi connection, etc etc
[Acer Iconia A500] rorytmeadows:
I want a nice car dock that will allow a passenger to sit in the passenger seat.
[Acer Iconia A500] xjarl:
Good idea~!

Well, It is exactly a different idea!

You want to fixed Iconia at the back of seat?
[Acer Iconia A500] xjarl:
Like the G tablet DOCK?

You mean a dock like the one for Gtablet? USB,HDMI and LAN. That's a little difficult...At least the mold fee will not be cheap. But a cable integrated HDMI and USB2.0 is easy...