I made a magnetic charger for the S4 that works really well! It is similar to the setup I had for my HTC Sensation http://forum.xda-developers.com/showthread.php?t=1283200. I've had it in two different cars, one of which was a Subaru I used to offroad and never had any problems with it falling off. As far as the parts I used:
Poetic Atmosphere:
http://www.amazon.com/Poetic-Atmosphere-Samsung-Manufacturer-Warranty/dp/B00BJS9B98/ref=sr_1_1?ie=UTF8&qid=1374642964&sr=8-1&keywords=poetic+s4
3/16 rare earth magnets:
http://www.radioshack.com/product/index.jsp?productId=2102642
Qi charging receiver (does not make a 'bump' on rear cover):
http://www.ebay.com/itm/Qi-Wireless-Charger-Charging-Receiver-Module-for-Samsung-Galaxy-S4-S-IV-I9500-/300935863274?pt=US_Cell_Phone_PDA_Chargers&hash=item46112cdbea
LG WCP-700. Good luck finding one. You could sub any charging mat:
http://www.amazon.com/LG-WCP-700-Portable-Office-Charging/dp/B005DMBSVA
GSI Super Quality 30w, 19v Laptop Rapid Car Charger Adapter Plug:
http://www.amazon.com/GSI-Quality-Charger-Adapter-Notebook/dp/B004J15XOY/ref=sr_1_8?ie=UTF8&qid=1374643275&sr=8-8&keywords=19v+car+charger
1. I cut the end off of the stock wall charger and spliced onto the 19v charger since that is what the wall charger outputs.
2. I folded the circuit in half glued it in to the box. I used a hallmark jewelry box that I cut half the height off of. The box is approx. 2.5x3.5--near perfect fit.
3. I centered the magnets and glued them in place before taping/gluing the box closed.
4. I marked out the measurements on back of the case and drilled holes. The case is hard inflexible plastic so it drilled really well.
5. Place case on box and match magnet polarities before taping them in place.
6. Use double sided tape to affix the box to your dash. Or, if you feel fancy, I bought the vehicle specific mount from ProClip and taped it to that.
7. Run cables for charger, or just plug in.
Pics attached
With that Qi charger do you keep NFC functionality?
Sent from my SGH-M919 using xda app-developers app
bogdi1988 said:
With that Qi charger do you keep NFC functionality?
Sent from my SGH-M919 using xda app-developers app
Click to expand...
Click to collapse
Unfortunately the NFC doesn't work. Although I used it, losing it wasn't that big of a deal for me.
That Qi receiver is only rated at 600mah, there's no way it will keep the phone charged if it's being used while in the car. Even a 1A charger will let the phone slowly die while using navigation& having the screen on.
96cobra said:
That Qi receiver is only rated at 600mah, there's no way it will keep the phone charged if it's being used while in the car. Even a 1A charger will let the phone slowly die while using navigation& having the screen on.
Click to expand...
Click to collapse
You are right. If using navigation and music it will discharge faster than it will charge, but it is VERY slow to do so. However, if you just listen to music with the screen on it charges fine. About 10% an hour.
Very cool. A bit expensive for me, but it'd be nice to have in my car.
I took my old power mate case for my s3 and took out the internals. I have a incipio case that I cut out the silicon layer to fit the circuit board with out adding any bulk to the case.
Sent from my SGH-M919 using xda premium
Related
i have some micro usb plugs and for some reason they dont fit all the way into the usb port on my captivate and keep falling out....anyone know where to get car chargers that fit all the way in? most plugs have to thick of a plastic and wont go all the way into the port....the one that came with the captivate has thin plastic around the plug itself..
Take a sharp blade and trim some of the plastic off at a 45 degree angle, worked for me.
one028 said:
i have some micro usb plugs and for some reason they dont fit all the way into the usb port on my captivate and keep falling out....anyone know where to get car chargers that fit all the way in? most plugs have to thick of a plastic and wont go all the way into the port....the one that came with the captivate has thin plastic around the plug itself..
Click to expand...
Click to collapse
I bought the Motorola car charger from ebay for like seven bucks and it fits perfect and is really long. I use a Nokia cable for charging at home and my Samsung cable stays in my travel bag since I'm on the road about three or four days a week. All fis excellent.
I ordered a car charger for like six bucks and usb cable for approx 4 bucks from amazon. Both were original Samsung products and the ends are shaped just like the cable that came with the phone, fits perfect. Just search for Samsung car charger andSamsung usb cable on amazon, if you haven't found an alternate solution.
Sent from my SAMSUNG-SGH-I897 using XDA App
one028 said:
i have some micro usb plugs and for some reason they dont fit all the way into the usb port on my captivate and keep falling out....anyone know where to get car chargers that fit all the way in? most plugs have to thick of a plastic and wont go all the way into the port....the one that came with the captivate has thin plastic around the plug itself..
Click to expand...
Click to collapse
Before you go out and buy a new cord, are you sure that you are opening the hatch all the way? My wife thought that no cords fit and kept falling out until I showed her that you have to slide the USB open until it clicks.
Is it that hard to figure this out? Sand paper or a sharp knife can shave away the plastic on the cable. The side that faces the back of the phone is where they interfere just bevel it a bit and you are all good. forget the stock over priced stuff, I get my cables at the dollar store.
Sent from my SAMSUNG-SGH-I897
Out of the 4+ charging stations I have laid out at home/work, each one has had the MicroUSB plug modified with a razor blade. Takes all of 10 seconds to hack off a little rubber, and then you're all set.
I've had the same issue. Most chargers wont fit. I think the USB on the phone is recessed a little too much for most chargers. Do what everyone else says and hack a little of that rubber off so it fits!
Sent from my SAMSUNG-SGH-I897 using XDA App
I use my old Moto Q wall charger at home, and the stock cord for connecting to my desktop. At work I use the USB cable from my old Moto Q and the stock plug part for charging at work and connecting to my laptop. I got my bases covered. ;-)
Sent from anywhere via XDA app
I bought a charger at Walgreens at all places.. it was 14 bucks and I didn't need to cut anything
I bought Motorola mini to micro usb adapters and they fit just fine. Seems like Motorola OEM stuff is small enough by my experience and other's above. I had tons of mini sized chargers for my GPS, camera, and Blackberry so the adapters have allowed me to keep using them. I bought a pack of 5 for less than $20 on Amazon.
Why isn't there an inductive case that charges the phone through the pogo pins? I know that the is a mod to do this yourself, but why isn't a professional one available?
Sent from my Xoom using xda premium
kiter86 said:
Why isn't there an inductive case that charges the phone through the pogo pins? I know that the is a mod to do this yourself, but why isn't a professional one available?
Sent from my Xoom using xda premium
Click to expand...
Click to collapse
Well, here's your chance to make millions.
Sent from my Galaxy Nexus using XDA
Sounds like a great idea but it might be hard to design a case that keeps constant contact with the pogo pins without damaging them when pressure is applied to the case. Would probably have to use some spring pogo pins which would result in a pretty bulky case (on that side at least)
Didn't think of that. That might be a problem. Still, I think that gnex accessories are seriously lacking. (car dock) wtf
Sent from my Galaxy Nexus using xda premium
Actually, if it were a case, it would fit snugly enough that you wouldn't need spring loaded contacts. Any sort of metallic contact would do, however thin. I like this idea.
I saw this in another forum
http://forums.androidcentral.com/ve...d-palm-touchstone-no-soldering-phone.html#anb
I can see several problems:
Charge speed:
Without proper signalling, the pogo pins will only charge at USB rates. meaning restricted to 500mA. The phone comes with a 1 amp charger for a reason. We are just now decoding the signalling here in the forums, an IC and Voltage regulator are needed. This would make for a pretty thick case.
NFC tags:
I'm not 100% sure on this, but would think that the charging coil will block the NFC from working properly.
USB:
When the phone is charging with the pogo pins, the USB port is disabled, they are exclusive of each other. Might not be so much of a problem, but still something to keep in mind.
Matridom said:
I can see several problems:
Charge speed:
Without proper signalling, the pogo pins will only charge at USB rates. meaning restricted to 500mA. The phone comes with a 1 amp charger for a reason. We are just now decoding the signalling here in the forums, an IC and Voltage regulator are needed. This would make for a pretty thick case.
NFC tags:
I'm not 100% sure on this, but would think that the charging coil will block the NFC from working properly.
USB:
When the phone is charging with the pogo pins, the USB port is disabled, they are exclusive of each other. Might not be so much of a problem, but still something to keep in mind.
Click to expand...
Click to collapse
Charging: You would need to use a modified kernel like Franco's - not an easy sell for a company looking to mass-produce these cases.
NFC: When I did my case mod I slid the coil up a bit so about half of the battery was not blocked. The NFC works fine. NFC will NOT work while charging b/c of electrical interference, so do not put an NFC tag on your charger base.
Also, those pins are small which makes it tricky to make & keep contact with the case. I ultimately popped the back & ran 2 stripes of copper tape to the outside of the phone, covering the pins. This gave me a pair of 1/4" x 3/4" contact points. The copper tape in the case makes solid contact & life is great. The tape pieces are hidden by the case.
I had the tilted wireless charger already (link bellow) but decided to get the official wireless charger as well.
http://forum.xda-developers.com/showthread.php?t=2611246
Of course its a lot better made then the Chinese charger but is it better in usability and charging speed?
With the Chinese charger I was using the stock nexus charger and cable because they are much better then the cables that came with the charger, more detail in the link bellow
http://forum.xda-developers.com/showpost.php?p=50254993&postcount=116
The info you need to know is that the OEM nexus charger and cable put out about 1000-1100mA while the same cable paired with a samsung 2a block was able to push past 1600mA but not keep it there, leveling out at 1200mA. The OEM block and cable with Chinese charger puts out between 650mA and 730mA
So how does the official Nexus charger compare?
Well to start I tested the new cable with the OEM block and it was putting out just over 1100mA, so we know the cable is better then the OEM cable. Then I tested the new cable with the block that comes with it and got a steady 1600mA and it didnt drop. Now the block itself doesn't say anything on it as to what it puts out, but the charger base says 1.8a, is that what the block puts out? Regardless the block is much better then the Samsung 2a block.
I don't use a case so the phone on the charger itself puts out only a little bit more then Chinese charger keeping a steady 768mA. Now it can drop below and above that number but it really likes 768mA. So while it does have a great cable and block, if all you care about is speed then charger itself is a little faster but not by much compared to the Chinese charger.
As far as usability, I cant get the nexus charger to miss. I can throw it on and it connects every time. With the Chinese one it didn't always connect and i had to make sure i got it in the right spot and make sure, even if I heard the noise, that it didn't disconnect and was actually charging. With the nexus charger I feel confident that the magnets are lining it up and it gets a good connection every time.
As and added bonus, I have heard a lot about how you could possibly charge while vertical attached to a wall. I decided to try this and I can attest that the weak link will be the charger holding the wall not the charger holding the phone, as long as you don't use a case like me. The magnets are more then strong enough to hold the phone vertically, in fact they are more then strong enough to hold it upside down, I tried! The pad that sticks to the surface is just as strong as I've been hearing as well. I literately just slapped it on the wall and then threw the phone up and its holding thus far. I have it only a few inches above my night stand and will update if it falls, but so far it has held up to me taking the phone off and on about 50 times with no issue. I'm not sure how it would hold up as a car mount, only because I don't know how the sticky part of the base would hold up to extreme hot and cold. I image it would probably fall, especially if completely vertical.
I would definitely recommend the Nexus charger over a Chinese one. I you have the $50 then its a no brainier, it was even a couple bucks cheaper then that on amazon and my prime membership got it here on Monday when i ordered on Saturday afternoon. If you only have $13 bucks and don't mind waiting 3 or more weeks then Chinese one charges almost as fast.
I too finally went from the orb to the new charger because I wanted a vertical mount. I'm blind as a bat with my contacts out and wanted to be able to see the time on my phone while in bed. With the orb, the angle was bad and my nightstand is taller than my mattress, making it hard to see. So I got the new charger, put it on the side of my nightstand and it's holding just fine. Holds the phone great too and now I can see the time on my phone. As long as you can get a smooth, flat surface, I don't see why mounting vertically would be an issue.
Sent from my Nexus 5 using XDA Premium 4 mobile app
just wanted to say, it did end up falling off the wall the 2nd night while charging, the charger from the wall, not the phone from the charger. A good sized piece of 3m double sided tape right in the middle of the charger fixed that and I've had no problems since.
Charger in use
Can you advise please if the Google charger cuts out once the phone has reached 100% or does it change to a trickle charge? Looking at some of the alternatives (e.g. on Amazon) I haven't found any that automatically cut out at 100% although a few mention about changing to a trickle charge. What's your experience in this regard?
S
[Nexus 5 about to be delivered]
I bought the official one and I must say that I'm very pleased with my purchase, Is there any apps which can detect the charging voltage so i may test my charger as well?
zubsz said:
I bought the official one and I must say that I'm very pleased with my purchase, Is there any apps which can detect the charging voltage so i may test my charger as well?
Click to expand...
Click to collapse
If you're root, can use Android tuner from play store!
Tapatalked with my Nexus5(aka the Hammerhead)
Hi guys,
I can see in the UK it costs £34.99 but how much is the delivery charge?
Thanks,
M
how long takes to make a fully charge?
xupthree60 said:
I had the tilted wireless charger already (link bellow) but decided to get the official wireless charger as well.
http://forum.xda-developers.com/showthread.php?t=2611246
Of course its a lot better made then the Chinese charger but is it better in usability and charging speed?
With the Chinese charger I was using the stock nexus charger and cable because they are much better then the cables that came with the charger, more detail in the link bellow
http://forum.xda-developers.com/showpost.php?p=50254993&postcount=116
The info you need to know is that the OEM nexus charger and cable put out about 1000-1100mA while the same cable paired with a samsung 2a block was able to push past 1600mA but not keep it there, leveling out at 1200mA. The OEM block and cable with Chinese charger puts out between 650mA and 730mA
So how does the official Nexus charger compare?
Well to start I tested the new cable with the OEM block and it was putting out just over 1100mA, so we know the cable is better then the OEM cable. Then I tested the new cable with the block that comes with it and got a steady 1600mA and it didnt drop. Now the block itself doesn't say anything on it as to what it puts out, but the charger base says 1.8a, is that what the block puts out? Regardless the block is much better then the Samsung 2a block.
I don't use a case so the phone on the charger itself puts out only a little bit more then Chinese charger keeping a steady 768mA. Now it can drop below and above that number but it really likes 768mA. So while it does have a great cable and block, if all you care about is speed then charger itself is a little faster but not by much compared to the Chinese charger.
As far as usability, I cant get the nexus charger to miss. I can throw it on and it connects every time. With the Chinese one it didn't always connect and i had to make sure i got it in the right spot and make sure, even if I heard the noise, that it didn't disconnect and was actually charging. With the nexus charger I feel confident that the magnets are lining it up and it gets a good connection every time.
As and added bonus, I have heard a lot about how you could possibly charge while vertical attached to a wall. I decided to try this and I can attest that the weak link will be the charger holding the wall not the charger holding the phone, as long as you don't use a case like me. The magnets are more then strong enough to hold the phone vertically, in fact they are more then strong enough to hold it upside down, I tried! The pad that sticks to the surface is just as strong as I've been hearing as well. I literately just slapped it on the wall and then threw the phone up and its holding thus far. I have it only a few inches above my night stand and will update if it falls, but so far it has held up to me taking the phone off and on about 50 times with no issue. I'm not sure how it would hold up as a car mount, only because I don't know how the sticky part of the base would hold up to extreme hot and cold. I image it would probably fall, especially if completely vertical.
I would definitely recommend the Nexus charger over a Chinese one. I you have the $50 then its a no brainier, it was even a couple bucks cheaper then that on amazon and my prime membership got it here on Monday when i ordered on Saturday afternoon. If you only have $13 bucks and don't mind waiting 3 or more weeks then Chinese one charges almost as fast.
Click to expand...
Click to collapse
Have you considered using this charger in the car? From what you're saying, the hold issue seems to be the charger itself. Using double sided 3m thick tape may solve the issue.
The reason I'm curious is because I and many other previous Palm Pre users used to use the touchstone wireless charger in their cars and the phone never fell of even on extreme bumps. It was great being able to simply place the Pre on the charger and if you were lucky you could put the touchstone right in your line of sight (I have an 06 civic so the touchstone fit right next to the steering wheel, to the right. Look at my profile pic or do a search for palm Pre wireless charging in the car and you'll come up with hundreds of results and pics).
Do you think the charger's internal magnets would be strong enough to hold the nexus 5 in place while driving? Right now, I still use the touchstone as a place holder for my 5 as the internal metal discs on the 5 line up nicely with the internal magnets in the touchstone. I did modify the touchstone slightly and added magnets every 90° starting at the 45° position and then the other 3 were 90°apart from the initial magnet. I'll try to post a pic or a video of what I mean. The touchstone is not a qi charger so it doesn't charge but it certainly makes for a super convenient spot for the phone to be especially when using navigation. Also the nexus has not fallen once while driving over some pretty harsh bumps.
What do you think?
Sent from my wondrous Nexus numeral 5
VOLTAGEROCK said:
Have you considered using this charger in the car? From what you're saying, the hold seems to be the charger itself. Using double sided 3m thick tape may solve the issue.
The reason I'm curious is because I and many other previous Palm Pre users used to use the touchstone wireless charger in their cars and the phone never fell of even on extreme bumps. It was great being able to simply place the Pre on the charger and if you were lucky you could put the touchstone right in your line of sight (I have an 06 civic so the touchstone fit right next to the steering wheel, to the right. Look at my profile pic or do a search for palm Pre wireless charging in the car and you'll come up with hundreds of results and pics).
Do you think the charger's internal magnets would be strong enough to hold the nexus 5 in place while driving? Right now, I still use the touchstone as a place holder for my 5 as the internal metal discs on the 5 line up nicely with the internal magnets in the touchstone. I did modify the touchstone slightly and added magnets every 90° starting at the 45° position and then the other 3 were 90°apart from the initial magnet. I'll try to post a pic or a video of what I mean. The touchstone is not a qi charger so it doesn't charge but it certainly makes for a super convenient spot for the phone to be especially when using navigation. Also the nexus has not fallen once while driving over some pretty harsh bumps.
What do you think?
Sent from my wondrous Nexus numeral 5
Click to expand...
Click to collapse
Been using the official Qi charger in the car daily, with this set up: http://forum.xda-developers.com/goo...es/kenu-airframe-n5-wireless-charger-t2573184. Perfect solution.
Hi,
I recently bought a qi wireless charger because my charger port of the phone broke and it's too expensive to fix.
Anyways, yesterday I left it for 2 hours the % went from 49 to 90 which I was quite happy with but I let it charge over night and it only went from 34% to 50%.
I am rooted and on AOSP.
I check the wireless current and sometimes as soon as I put it on the pad it's 1000ma but then it keeps dropping quick to 100ma. The pad as an output of 1000ma.
Csn someone tell me how to fix the slow charge. Thanks
Sent from my GT-I9300 using XDA Premium 4 mobile app
you're probalby not lining it up properly. that happens when you've misaligned the pad to the charger. find the sweet spot and just remember to place your phone there the same way.
if you're handy,you can probably also come up with a cradle of some sort so the phone falls right in place everytime.
mputtr said:
you're probalby not lining it up properly. that happens when you've misaligned the pad to the charger. find the sweet spot and just remember to place your phone there the same way.
if you're handy,you can probably also come up with a cradle of some sort so the phone falls right in place everytime.
Click to expand...
Click to collapse
I placed mini rare earth magnets under the phone's back plate, just 2 on the top area, and then 2 on the Qi wireless charger so the phone aligns perfectly with the charger, and gets the best charge it can get.. Also I opened up all my Qi Chargers and used my Dremel to remove all the extra plastic, as much as I could to remove any kind of resistance or space between the Tx Coil and the Rx Coil.. I tested the best place they could be aligned with a Multi Meter, and then added magnets.. Works like a charm.. Its a pain in the ass, but mine works out pretty well. I didn't place the magnets on the inside, I placed them on the outside of the charger.. Works well
http://www.ebay.com/itm/271329239542?_trksid=p2059210.m2749.l2649&ssPageName=STRK:MEBIDX:IT
thats what I purchased..
uh wow... that's seriously overkill but sure.. you can do that..
although i wonder if putting magnets that strong in your phone will mess with your gps and magnetometer.
i would say a small plastic cradle or creating little edges on the transmitter so the phone just physically falls in would be an easier and safer alternative that using a dremel on your receiver.
mputtr said:
uh wow... that's seriously overkill but sure.. you can do that..
although i wonder if putting magnets that strong in your phone will mess with your gps and magnetometer.
i would say a small plastic cradle or creating little edges on the transmitter so the phone just physically falls in would be an easier and safer alternative that using a dremel on your receiver.
Click to expand...
Click to collapse
I would of thought the same thing, but it has given me zero problems when the magnets are set up top.. HOWEVER, when I tried to place 2 near the bottom, it caused all kinds of problems with USB charging and my phone locked up a few times... I'm glad the damage wasn't permanent.. I used my Hotglue gun to hold them into place, the magnetic field caused a short in the Gluegun and it EXPLODED in my hand.. I was lucky enough to drop it right when I heard the sizzle and BANG.. So when playing with strong magnets.. Be careful.
Edit: I also have an external case with the same type magnets, and even with the case on, it doesn't give me any issues, at least any I'm aware of.. I made a magnetic mount on my desktop pc, just for kicks.. But since the case is metal, I can't put a Qi charging coil on it.. Now that would be neat..
yeah.. that's dangerous in general. I honestly would not recommend anyone to do what you did considering you almost ended up with stuff blowing up un your hands.
Sent from my GT-I9300 using XDA Free mobile app
The idea behind Qi is simple: all devices with the Qi logo will work with all Qi chargers. That’s it. No need for separate chargers, no need for cables, and no need for adapters when traveling. Qi is a global standard – this means that your device can be charged wirelessly wherever you are.
I want to buy a magnetic charger and I live in India and very low quality cables are available on the local websites. I have looked for cables on eBay.com which ship to my location but I don't know which one to buy. I need your opinions. My maximum budget is 12$(incl. shipping).
The WSKEN Cable is available at my location. Is the cable worth buying?
Thanks in advance.
I got wsken magnetic cable, and its build quality is fine, but magnet is not that strong - its even weaker than another fake original sony cable i got. But if you just use it to charge your phone without using it, it can do the job.
I wouldnt recommend one with a very strong magnet. There have been some horror stories of the storng magnet PULLING the phones charge port completely out. I got a fairly weak one from amazon.
http://www.amazon.com/gp/product/B00UOVZOBK?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
Fits perfectly with my Cruzerlite TPU case. I even have EXTRA room for clearance. Magnet isnt the strongest which makes me happy as I only charge at night when I'm sleeping as the phone lasts through the day for me.
Yup, it happened to me. I use a Magnector adaptor and it is very strong, after a while the whole connector came off as there was simply a VERY thin acrylic glue foam tape (VHB ?) holding it and keeping water off. By thin I do not mean the thickness but the actual long side surface
The good news is that the connection with the internal PCB board are spring loaded, so I put it back in place and tested it then used a needle to put some cyanoacrlylate glue to hold it, it never came out again and the phone still look ok. Now I always try to removing it with a twisting motion just in case...
It is hard for me to understand how they can claim waterproof and use such thin gasket but I still like this phone a lot!
hmm dont think I'll be getting a magnetic charger any time soon then if it comes off that easily. >_<
It's just the Magnector adapter that seems to do that. None of the others are strong enough to pull the connector off of the phone.
I just bought an OEM one from aliexpress for only $2.71 US. btw you only save .03 if you use the mobile app
http://www.aliexpress.com/store/pro...a-Z1-Charger-Adapter/1775016_32429292298.html
I also have a generic magnetic charger. The one with a circle blue LED in the part near the magnet. I found that it charges slowly compared to the OEM usb cable that came in the box. I used the same OEM charger for both tests.
Charging via magnetic cable is roughly 60-70% of the speed of normal USB charging. Is this just me that I have a low quality cable or is it really that much slower?
I tried two Magnetic cables but they don't work on my Z3 Compact because pins are not aligned with phone and charging not working probably because there is no contact. Actually i got one with LED indicator to work several times but on slightly move it stops charging and it is hard to get it to charge again so I gave up on these cables.
I bought original Sony DK48 Dock and it's working out of the box. Only issue is that I need to remove protective case before charging because with it phone won't fit in Dock. It almost fits so I'll probably try to modify larger adapter so phone can fit with case...
I received my DK48 dock and magnetic cable from Ali Express and they both work great. The charging cable ($2.71) matches the pins perfectly so doesn't appear to be a knock-off. I have a Devilcase bumper and works with the DK48 dock also with the case on--just attach the included back rest. It takes me a few times to get it aligned perfectly to charge but works.
I'm using this cheap one and it works great for me. Magnet is ok so you can even move your phone as long as the cable is parallel to your phone.
http://www.ebay.com/itm/Magnetic-Ch...39h-KK-/261850771916?var=&hash=item3cf785b1cc
I'm have WSKEN X-cable Easy Version, and it's great.
You can also try WSKEN X-CABLE DOUBLE METAL which has a charge indicator led.
Both cables charge my device faster than original Xperia Z2 charger and magnet is not too weak/too powerful.
Check WSKEN website for details.
I've tried several magnetic chargers and adapters and always facing the same problem, too weak magnet and if the phone is moved even an inch the cable falls off. Finally I got WSKEN X-CABLE for 7$ and that did the trick, everything works great including fast charging. You can literally hold your phone up in the air by the charger. And no, the magnet is not too strong as described in previous posts, with a slight pull it comes off without breaking the phones charging port. There is even a little plastic widget included to attach the cable into the right position angle and you can perfectly use the phone while charging. Link: http://www.ebay.com/itm/112026597308?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT