[Q] does Qi charging require a magnet within the charger? - Nexus 4 Q&A, Help & Troubleshooting

I've recently ordered a wireless charger and the manufacturer is not sure if the Nexus 4 requires a magnet in the charger to signal the phone to start charging via Qi. They included a magnet to put on the back of the charger if this is the case.
I was just wondering if anyone had a definitive answer to this before I receive my shipment. The manufacturer said that some phones require a magnet to begin inductive charging and some don't.
Thanks in advance,

AFAIK, it doesnt

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[Q] Modifiy Nexus 10 For Qi Wireless Charging?

In short, could we slap a Qi-compliant coil in our Nexus 10, wire it to the battery, and win?
The coil itself is pretty thin from what I've seen, and there is a bit of room in-between the battery and back plastic (the people with creaky and buckling cases should know about this).
I don't know if there's an actual control board that is needed, but perhaps the coil could be hooked either directly to the battery, or even through USB (that way you can be notified of charging). If a control board is needed, then this might be a bit harder than expected, unless the board itself is pretty thin too.
It looks like someone's managed to do something similar to a Nexus 7 already and had good results (even enters docking mode): http://forum.xda-developers.com/showthread.php?t=2070851
Edit: Instead of routing the coil to the USB or battery directly, we could even hook it to the Pogo pin area, like the person did for the N7 coil mod above.
I'm willing to give this a try, but may have to wait a few weeks till I can get the funds for a coil and for it to ship to me.
espionage724 said:
In short, could we slap a Qi-compliant coil in our Nexus 10, wire it to the battery, and win?
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According to a-post-at-techchrunch-i-cant-link-to-cause-im-a-noob, the Nexus 10 has Qi already... is it wrong? I haven't opened my Nexus 10 to check
I have openned up my Nexus 10 and dont remember anything for wireless charging being there.
I saw someone mod the Galaxy nexus to enable this sort of thing and from what I remember you should be right Espionage, just as simply as you think. And yes there is room to do it.
xiq said:
According to a-post-at-techchrunch-i-cant-link-to-cause-im-a-noob, the Nexus 10 has Qi already... is it wrong? I haven't opened my Nexus 10 to check
Click to expand...
Click to collapse
I can find no reference to the device on the offical Qi website. This makes me highly skeptical that Qi is already present on the N10, perhaps they confused it with the N4?
Search for yourself if you'd like: http://www.wirelesspowerconsortium.com/products
As slow as the Nexus 10 already charges with it's stock USB cable... do you really WANT to charge it with Qi? :laugh:
You might have to charge it for a week from 0% to get to 100%
Any further developments?
Hey Guys!
Is there any further developments on this possibility? :fingers-crossed:
Why not just use a pogo cable.... you would have to plug in a charging pad anyway.
Nexus 10 Wireless Charging Solution
I know it's been some time but I'm kind of surprized nobody posted a solution yet. I just had a Nexus 10 open and noticed not for the 1st time the pogo pins at the bottom that Google never even put to use. I can't even find an aftermarket docking station for it. We aren't talking about Apple here. Anyways the closest I've seen is a magnetic pogo pin charging adapter cable probably sold mostly to people who broke their USB ports. It seems nobody picked up on sewermike's comment. They DO have pogo pins and with a wireless coil (2-4 chained together) you could wire them to the + and - of the pogo pin cable easily. Also if you have access to old Nexus 2nd gen back covers you can get them there or on eBay cheap. It might be slow like TheAltruistic says but if you have a wireless device charging coffee table which I'm seeing more and more you can just set it on that. If I have time I'll do video or at least post my results.
ive got the pogo cable, if you can buy it do so - its well worth it, i think i paid £15 and i totally stand by it.
as for wireless charging, you can get wireless charging receiver cards that plug into the micro usb port, with this you can either plug it in and bend the cable around the tablet and hide it inside the case or plug it in and have it hang outside, you just rest the card on the charger.
please remember that is isnt a perfect solution as the card will get hot and overheat and stop charging or you'll spend all day charging the tablet.
i use to wirelessly charge the nexus 10 but id rather stick the pogo in

[Q] Qi Wireless charging

Does the S4 come with this out of the box or do we need a special back plate?
Can we use the same Qi Wireless charger used with the N4?
It's not out of the box, there will be a seperate back plate for sale, but you can look out for the inserts that probably will be for sale soon (as with S3), and it will work with the N4 charger as long as it is in the same Qi Wireless charging standard.

[Q] Pogo - Cigarette Lighter Charger

I can't seem to find the answer I'm looking for anywhere so here it goes..
I am mounting a Nexus 7 in my car with a bluetooth head unit to get sound through my speakers. If I make a dock containing pogo pins to charge the device, can I run those pins to my cigarette lighter so the N7 charges will the car is on? I have a 12v to 5v 3A converter on the way if needed. I really don't want to fry my battery and have to start over.
Could this idea cause any problems? Thanks in advance.
I don't think the pogo pins will charge the device fast enough to keep up with the usage. So if you travel it will slowly deplete. It is a slow charge. People do this though.
You should also look into installing a wireless charger under your battery door so it charges through induction like the Nexus 4. There are videos that walk you through this. Usually they connect the wireless disc up to the pogo pins or to the battery contacts directly.
The N7 will shut off charging once the battery is full, so youd want the power always on through to the cable.
Food for thought. There are numerous threads here in the forums that show people doing this and their findings. I would do the induction charge though for ease of removal and hassle. You can pick up a touchstone charger and disc for probably $20 on eBay. There are specific models to look for and the details would have to be researched.
My buddy did his N7 and he said it was super easy. His only beef was the N7 was too heavy for the included magnets to really keep a secure connection and some people also purchased stronger magnets for under the battery door to fix this. They turned out so strong that the N7 would actually hang simply by the magnets so it kind of "snaps" in place.
Sent from my Nexus 7 using XDA Premium HD app

Wireless charging kit advice.

If I want to set up my phone for wireless charging can I buy any qi wireless charger or does it have to be the one specifically for the s5? It's about £35 here in the UK, but I've seen much cheaper ones. I will already have to pay £30 just for the wireless charging Samsung back cover, unless there are any cheaper options for that too?
I'm new to wireless charging so am just after some advice to save some pennies.
Thanks..
Sent from my Sinclair ZX81.
I'll hijack ur thread to post another question since I wanted to get the wireless charging mini pad, do you always have to plug the pad in mains or does it hold charge itself?
Sent from my GT-I9500 using Tapatalk
Any Qi wireless charging pad *should* work. It's a standard so you shouldn't need a Samsung specific pad. That said, all charging pads aren't created equal. I've used no-name Chinese ones, Nokia ones and Samsung ones and I've stuck with the Samsung ones.
The downside to cheaper ones can be overheating (rarely to "burn your fingers" hot, but they can warm up quite a bit) as well as sometimes needing very specific placement on the pad in order to start charging.
I haven't used wireless charging with the S5 yet as I'm waiting on the cover (not the S-View one) being available, but I've used it with my S3 (3rd party receiver inserted under the cover) as well as with my S4 (3rd party receiver initially, and then later the official Samsung wireless charging cover).
@skivnit - The charging pad needs to stay plugged in to something. You may be able to plug into a portable charger (and some portable chargers may come with Qi charging built in, but you're probably paying a premium for those).
Then glad I did cancel my order as I thought I'd get rid of the cables for good might just buy one of those portable chargers
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Qi charging problems

I ordered the official Samsung wireless cover from Amazon, slapped it on, and then put my Otterbox Commuter series over it - so far so good, everything fits reasonably well.
I go to put my S5 on a wireless charger and it charges. Then stops charging. Then starts charging again. Then stops again. Over and over it repeats this.
I get to thinking the phone is just too far away, so I take off the hardshell of the Otterbox Commuter. Same thing happens again. So I take off the soft shell - now I'm down to just the naked phone, and it's still charging on and off.
I'm using the blackberry folding blade wires, and the chargers found here: http://forum.xda-developers.com/goo...udget-wireless-charger-showdown-5-qi-t2676249
Specifically, the tilted charger and rectangle with LED lights. Both are giving me the exact same on & off problem.
So does anyone know how to fix this? Is it the chargers or something I'm doing? Are the chargers just not generating a strong enough field (if so, which charger can I get that will generate a better field?)
Thanks for any help
EDIT: Clarified that wireless cover is official Samsung
xmacro said:
I ordered the wireless cover from Amazon, slapped it on, and then put my Otterbox Commuter series over it - so far so good, everything fits reasonably well.
I go to put my S5 on a wireless charger and it charges. Then stops charging. Then starts charging again. Then stops again. Over and over it repeats this.
I get to thinking the phone is just too far away, so I take off the hardshell of the Otterbox Commuter. Same thing happens again. So I take off the soft shell - now I'm down to just the naked phone, and it's still charging on and off.
I'm using the blackberry folding blade wires, and the chargers found here: http://forum.xda-developers.com/goo...udget-wireless-charger-showdown-5-qi-t2676249
Specifically, the tilted charger and rectangle with LED lights. Both are giving me the exact same on & off problem.
So does anyone know how to fix this? Is it the chargers or something I'm doing? Are the chargers just not generating a strong enough field (if so, which charger can I get that will generate a better field?)
Thanks for any help
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Click to collapse
I had the same issue with a cheap receiver I bought off ebay. The receiver was junk. I took it out of the phone and dropped it on the mat and used a multimeter to check my voltages and never got consistent readings. Tried again with the same chinese mat and the official back and no issues at all.
Kite09 said:
I had the same issue with a cheap receiver I bought off ebay. The receiver was junk. I took it out of the phone and dropped it on the mat and used a multimeter to check my voltages and never got consistent readings. Tried again with the same chinese mat and the official back and no issues at all.
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Ah, sorry, should have clarified - I'm using the (allegedly) official Samsung wireless cover, the part that replaces the entire back
xmacro said:
Ah, sorry, should have clarified - I'm using the (allegedly) official Samsung wireless cover, the part that replaces the entire back
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I am having similar issues using a Palm wireless charger I custom made. I believe the issue is the connection from the cover to the pins on the device next to the battery. I am going to try adjusting it. Also, putting the phone in power saving mode before wireless charging seems to help. Think it may have to do with the wireless charging coil not providing enough amps for the phone to keep up. Trying a different cable/wall charger may help.
xmacro said:
Ah, sorry, should have clarified - I'm using the (allegedly) official Samsung wireless cover, the part that replaces the entire back
Click to expand...
Click to collapse
It could be the output isn't high enough. For the official mat you need to have a 3 amp charger for it to work. And if the output is too low, the phone may be getting confused because it is detecting a current, but not enough of one for it to be registering that it is charging. I have a car charger that has a 1 amp and a 2 amp setting, and when I try it on the 1 amp setting I get the same issue where it connects and disconnects. 2 amp and I get 0 issues.
I have a similar issue. I'm using the official Samsung S-View Wireless Charging Cover with the Nexus 5 wireless Charger. I get nothing when I put them together. I believe the output from the charger is around 2 amps and it works perfectly with my Nexus 5 (surprise, surprise...) Not sure why I don't get any response whatsoever...
Kite09 said:
It could be the output isn't high enough. For the official mat you need to have a 3 amp charger for it to work. And if the output is too low, the phone may be getting confused because it is detecting a current, but not enough of one for it to be registering that it is charging. I have a car charger that has a 1 amp and a 2 amp setting, and when I try it on the 1 amp setting I get the same issue where it connects and disconnects. 2 amp and I get 0 issues.
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I'm using a blackberry folding blade charger, the stated output is 1.8 amps, and my Samsung charger that came with the phone is 2.0 amps; both give me the on/off problem. Is 3 amps really the key? Where do you find one?
xmacro said:
I'm using a blackberry folding blade charger, the stated output is 1.8 amps, and my Samsung charger that came with the phone is 2.0 amps; both give me the on/off problem. Is 3 amps really the key? Where do you find one?
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Sorry meant to say 2 amp. But you may want to test your mat and receiver and see if it really putting out the 1 amp the other thread said it was supposed to. If you are getting an output of less than 1 amp that the other thread says it should be then that is probably your issue. Unfortunately I'm not able to measure the outputs on either of my mats to give you an idea until later this evening when I get out of work.
Kite09 said:
Sorry meant to say 2 amp. But you may want to test your mat and receiver and see if it really putting out the 1 amp the other thread said it was supposed to. If you are getting an output of less than 1 amp that the other thread says it should be then that is probably your issue. Unfortunately I'm not able to measure the outputs on either of my mats to give you an idea until later this evening when I get out of work.
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Click to collapse
I think you may be right; it may well be the mats I have are just junk, both of them, unfortunately.
I opened up the back of the phone, and brushed off the wireless charging prongs, just to make sure they weren't dirty. Put cover back on, put otterbox commuter case back on.
Put it on the wireless charger, it cycles on/off again and again, about once per second. Take off the hard shell, leaving just the soft shell, and it cycles on/off about once every five seconds - that is, the interval actually got longer. Take off the soft shell, down to a naked phone, and works after cycling on/off about 5 times, then it settles down and stops cycling.
On another charger, the tilted qi charger, it'll charge if the phone is naked, but if I put even the soft shell of the Otterbox Commuter on it, it'll cycle a few times then just not charge at all.
I'm not sure this is a connection problem with the prongs, or a problem with the wire/charger. I think it has something to do with the field that the qi charger is generating. Since I don't know jack about the qi standard, can anyone tell me if all qi fields are equal? That is, do higher quality qi chargers produce a larger or strong field than cheap units?
Like I said in the OP, these are all very cheap chargers, $15 at most, and I'm wondering if that may be the cause.
xmacro said:
I'm using a blackberry folding blade charger, the stated output is 1.8 amps, and my Samsung charger that came with the phone is 2.0 amps; both give me the on/off problem. Is 3 amps really the key? Where do you find one?
Click to expand...
Click to collapse
I use the 2A charger that came with the phone with the CHOETECH pads. The insert is the CHOETECH mat inside the cover. The pad is rated 2.1A input, 1A output. My phone cycles on-off occasionally when the phone hits 100%. I use the Otterbox Defender case.
jetskier said:
I use the 2A charger that came with the phone with the CHOETECH pads. The insert is the CHOETECH mat inside the cover. The pad is rated 2.1A input, 1A output. My phone cycles on-off occasionally when the phone hits 100%. I use the Otterbox Defender case.
Click to expand...
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Interesting, so could the problem be due to just using a cheap generic? Seems that the cheap ones may be generating a smaller or weaker field?
Just wanted to post an update - bought a more expensive charger, one with 3 coils instead of the 1 that was in my other two - and now it charges fine, right through my Otterbox Commuter case.
So to anyone else having this problem - the field generated doesn't seem to be big enough to penetrate the Otterbox Commuter with just one coil, you need 3 or so.
EDIT: Specifially, it was the Cheotech Qi wireless charger, rectangle with LED
xmacro said:
Just wanted to post an update - bought a more expensive charger, one with 3 coils instead of the 1 that was in my other two - and now it charges fine, right through my Otterbox Commuter case.
So to anyone else having this problem - the field generated doesn't seem to be big enough to penetrate the Otterbox Commuter with just one coil, you need 3 or so.
EDIT: Specifially, it was the Cheotech Qi wireless charger, rectangle with LED
Click to expand...
Click to collapse
it's not the problem with the coil, they give out the same current, it's because the angled charger is a cheap and nasty one, and the flat one is just a fake one, the official one cost alot more.
3 coils only give you a wider surface detection, the current is just the same as a single coil or a 7 coils.
The 3 coils charger you have is a rebadge of powerqi T300 which is a highly recommended one.
kms108 said:
it's not the problem with the coil, they give out the same current, it's because the angled charger is a cheap and nasty one, and the flat one is just a fake one, the official one cost alot more.
3 coils only give you a wider surface detection, the current is just the same as a single coil or a 7 coils.
The 3 coils charger you have is a rebadge of powerqi T300 which is a highly recommended one.
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Ya learn something new everyday - thanks for the info

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