This post has info about a wireless charging mod for the T-mobile variant of the i9100, so I decided to do it to our variant.
I purchased a Palm Touchstone kit (cover and dock). The back cover (palm pixie) has the inductive charging circuit, so I removed the coil stuck to it using a heat gun (be careful), and removed the four metal studs that align it to the magnets in the touchstone base dock charging station.
I have the i9100T, which is the same as the i9100 international variant. I removed the battery cover entirely and made use of the space between my hard snap on case and the battery.
I used copper foil tape (eBay) to make the copper traces. I placed route from the +5v USB connection to the battery compartment using thin strips next to the top of the resistor, leading out to toward a thicker folded copper strip that heads to the battery edge of the pcb. I soldered over the thin trace to increase the current handling capability. Another folded strip leads to the grounded chassis screw. These two connections pair with the full width strips on the case. These run to the underside of the coil circuit strip, where two small square plates are pressed onto the copper strips. I glued a very thin rubber strip to the top side to ensure the connection. The metal studs, coil and circuit are glued to the case. I'd recommend tape also for water/moisture protection.
See the photos of what I did below:
https://www.dropbox.com/sh/866jkbv5lypoxmw/ySteboQ0XF#/
Kudos! Great job mate. Will try and report how it goes..
Time to get one Palm wireless charger..
Very interesting, been looking for something like this for a while. I wonder if this could affect reception or the functionality of compass, Wi-Fi, Bluetooth, cell reception or anything else and damage it over time.
Could this also work with the coils inside the original battery cover or, if this is impossible could it work inside the extended battery cover (but without the extended battery, instead using normal battery) thus there could be enough space?
I thought about my own method, but this could be to simple: glue the coils inside the battery cover, then somehow glue or connect thin stripes from the coil to the contacts of the battery, right between the connectors of the battery and the contact ports in the battery compartment where the battery is connected to. This way, the battery could be charged through micro USB or inductive.
Do you know what I mean? Possible or too simple?
Sent from my GT-I9100 using xda app-developers app
No, I have experienced no effect on other signals. The reports from other users are the same. The only effect it will have is on the compass, due to the magnets in the charging dock.
If you use the original battery cover, it will buldge out and look like ****. It also won't sit neatly on the flat charging dock. Yes, you could use an extended battery cover also. My solution seems to be the neatest for me, as I use a protective case anyway.
Don't connect the coil directly to the battery. I'm not sure if the coil circuit even has any battery charging functionality. You are much better off supplying 5 volts to the phone's charging circuits. I can charge either via induction or micro usb, both are working fine.
you've mentioned effects on the compass. Do you mean it is only affected while on the dock or does it permanently damage the compass due to the magnets in the touchstone? If this is the case, I'd rather not think about doing it. Would it be possible to use something else instead of the touchstone, like an inductive charging mat, e.g. a powermat, Duracell myGrid or Energizer inductive charger? Thus, there won't be any magnets. Of course one would still need the palm back cover with the coil.
The presence of magnets will just throw off the built in compass, I doubt very much whether it would cause permanent damage. You would quite possibly find that the compass refused to calibrate, due to 'abnormally high magnetic field'.
The PowerMat also uses magnets built in to the induction coil units on both the receiver and base in order to ensure correct allignment.
Phil
drsoran2 said:
you've mentioned effects on the compass. Do you mean it is only affected while on the dock or does it permanently damage the compass due to the magnets in the touchstone? If this is the case, I'd rather not think about doing it. Would it be possible to use something else instead of the touchstone, like an inductive charging mat, e.g. a powermat, Duracell myGrid or Energizer inductive charger? Thus, there won't be any magnets. Of course one would still need the palm back cover with the coil.
Click to expand...
Click to collapse
since it messes with the compass, would gps turn by turn have issues too ? since I have no idea if the compass is used to determin the direction for the gps.
So, I'm getting ready to look for and purchase the necessary parts to do the mod. This is just to confirm that I'm getting the correct parts.
I need some copper foil.
This back cover here: http://www.amazon.de/Pixi-Touchston...KPGU/ref=sr_1_1?ie=UTF8&qid=1353844406&sr=8-1 (Palm Pixie Touchstone Back Cover). Palm Pre back cover won't work?
And this: http://www.amazon.de/Pre-Zubehörtei...0JGY/ref=sr_1_3?ie=UTF8&qid=1354893172&sr=8-3 (HP Pre 3 Touchstone charging kit with international charger)
and this: http://www.amazon.de/Samsung-EB-K1A...HRY8/ref=sr_1_2?ie=UTF8&qid=1354716530&sr=8-2 (Galaxy S2 extended battery and back cover). I'm modifying here and use this instead of the snap on case. I hope I can fit the extended battery and the induction mod all under the extended battery cover. If there is not enough space, I'll have to use the normal battery and extended cover.
Is this all correct?
Hi mate. I'm interested in doin the same with my SGS2 inside the 2000mA cover with the 1650mA battery. I've already invested in a Touchstone cover and dock and like you I was looking to apply the coil directly to the battery. I did some research and a little poking around the four terminals on the galaxy battery with my multi meter. I'm led to believe the battery has its own circuitry for protection which is controlled by the extra terminals. How far did you get with your project, did you experiment applying the coil directly to the battery?
Sent from my GT-I9100 using xda app-developers app
sun-seeker said:
Hi mate. I'm interested in doin the same with my SGS2 inside the 2000mA cover with the 1650mA battery. I've already invested in a Touchstone cover and dock and like you I was looking to apply the coil directly to the battery. I did some research and a little poking around the four terminals on the galaxy battery with my multi meter. I'm led to believe the battery has its own circuitry for protection which is controlled by the extra terminals. How far did you get with your project, did you experiment applying the coil directly to the battery?
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
no, I didn't apply the coil to the battery for the simple reason that it makes switching the battery easier if it's empty or faulty.
However, I did not follow the exact steps in the description. As you suggested, I wanted a more elegant solution and so I stuck the coil, magnets and circuits from the palm backcover to the 2000 mAh extended battery cover and used it with the 1650 original battery.
I also did not use cooper foil but soldered small wires to the + and - pole of the Galaxy's board, these I connected to the approbiate places on the circuit inside the Galaxy extended back cover. This way I can remove the back cover and lay it next to the phone when switching the memory card, sim card or battery.
From the outside, no mod is visible at all. It just looks like the extended battery cover. Very elegant. However, due to the size of the circuits and coil, you can't put the 2000mAh battery and the extended battery together. It's just to thick. Trust me, I tried.
You can only use the coil and circuits with the standard battery and the extended cover.
If you feel good at doing this stuff, then go ahead. You won't regret it. I myself helped my dad while he was doing it because he has a soldering iron and a lot of experience with this. I didn't want to risk anything.
It's well worth it. I have the mod since Tuesday and my phone has never seen a charging cable attached to it since then (although you can still use it if you want!). It really awesome and cool. No searching for the charger cable, no plugging in and out, no tripping over the cable and knocking down the phone, no wear and tear. Just drop it on the touchstone and it charges!
The phone gets a little hotter than usual while charging but nothing serious. When charging is finished, the temperature is normal again. Lastly, it charges a little slower than with the charger cable. The phone recognizes the touchstone as USB connection so charging is 450mAh not 650mAh.
I just purchased my second touchstone from ebay so I can charge at two places without carrying around the one touchstone. This is how much I like the mod.
If I buy a new phone sometime in the future, it MUST have inductive charging built in! It's a whole new feeling. Plugging in the charger cable is so 2010
Thanks very much to the OP for the mod. It's really cool and works flawlessly!! The only thing I regret is, that I didn't do it earlier.
There is no problems with the reception of the phone ?
no, there are no problems at all! See, the back cover with the coil and the touchstone were originally released for the palm/hp smartphones pre, pixie and a bigger touchstone for the hp touchpad. All these phones have gps and everything. HP wouldn't release this if it affects their phones function's negatively. The mod just uses these parts and ports them to the S2.
Hi!
I managed to do this mod with extended cover + 2000 mah battery :laugh:
Got the (-) from the sim-card holder
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
The contact between battery cover and phone is still under dev :silly:
kasarona said:
Hi!
I managed to do this mod with extended cover + 2000 mah battery :laugh:
Got the (-) from the sim-card holder
The contact between battery cover and phone is still under dev :silly:
Click to expand...
Click to collapse
very smart to use the mold on top of the SIM card holder and put the circuits there. Should have thought about that earlier! I glued them to the inside of the extended battery cover and used little wires so that I can remove the back cover, memory card, SIM card and battery if necessary without affecting the mod.
I have now the extended back cover + induction mod + standard battery. Looks nice and original. The icing on the cake would have been the extended battery included as well.
Anyways, keep it going. I hope to see the final result. Trust me, inductive charging is so cool and convinient.
Thanks vry much:good:
thanks
What happenes when I put the phone on touchstone and plug a USB cable in? Does USB charging "override" inductive charging?
What happenes when I put the phone on touchstone and plug a USB cable in? Does USB charging "override" inductive charging?
Click to expand...
Click to collapse
Good question but as my mod use usb socket I am not able to check
Sent from my I9100 @syiah5 using xda premium app
I don't advise doing both as the S2 doesn't recognise wireless charging like the S3. Your effectively doubling the input current which as I experienced lit the screen brightness up vastly for a split second until I broke the connection. I was lucky not to cook mine as is it still works.
Sent from my GT-I9100 using xda app-developers app
Awesome Idea!! Will probably try it by myself but ill use the extended Battery i think the cover has still some space to loose
Question, how thin is the solution? more than 2 millimeters?
What happens if we "increase" the usb charging speed via custom kernel to 650 ma ?
Does it work?
Thx for sharing!
Related
I'd really like to get "fast" inductive charging without a software mod. The pogo pin thread has obviously solved the problem. I'm wondering if anyone has given any thought to merging the inductive charging mod with a small microcontroller (like maybe the attiny4) and voltage regulator. They'd have to be small enough to fit under the battery cover. Any thoughts?
Thought 1: The pogo pin thread would be a good place for this question.
Thought 2: Having stuffed a palm pre inductive coil under the battery cover, and seen the resulting bulge, there is definitely not enough room for such a circuit. Maybe possible with an empty extended batt cover, but not enough interest to make it worth while when it can be done externally with a dock or much easier with FC kernel.
I have mine under the extended battery case and with the attiny4 there shouldn't be any problem in size (it is microscopic!).
Hey everyone,
I am really keen on having Qi charging and already have the pad and everything. I am looking to make the move to an extended battery (not the official one, which I hear works with the pads, but rather an ebay one, 4300mah, 4500mah etc with extended battery doors).
I know this will cause the contacts to be elevated above the spots requiring contact with the pad.
How are people overcoming this? I'd rather not solder to visible contacts inside the phone, and was curious how others have accomplished this and kept a consistent connection without permanently affixing it with solder?
Thanks!
Sean09 said:
Hey everyone,
I am really keen on having Qi charging and already have the pad and everything. I am looking to make the move to an extended battery (not the official one, which I hear works with the pads, but rather an ebay one, 4300mah, 4500mah etc with extended battery doors).
I know this will cause the contacts to be elevated above the spots requiring contact with the pad.
How are people overcoming this? I'd rather not solder to visible contacts inside the phone, and was curious how others have accomplished this and kept a consistent connection without permanently affixing it with solder?
Thanks!
Click to expand...
Click to collapse
I've heard of people using copper tape to connect both ends
Sent from my SCH-R530M using Tapatalk 4 Beta
zolo185 said:
I've heard of people using copper tape to connect both ends
Sent from my SCH-R530M using Tapatalk 4 Beta
Click to expand...
Click to collapse
Would like to see some pictures of this was thinking about doing it myself but wasn't sure if it would work, also would like to know which sort of copper tape they use..
Look for palm pre mod . It was the wireless charging mod before qi chargers were made for the s3.
Edit: https://www.youtube.com/watch?v=jHw1QIPwkZU&feature=youtube_gdata_player
Sent from my SCH-R530M using Tapatalk 4 Beta
zolo185 said:
Look for palm pre mod . It was the wireless charging mod before qi chargers were made for the s3.
Sent from my SCH-R530M using Tapatalk 4 Beta
Click to expand...
Click to collapse
He said he already has a qi pad, so that wouldn't work for him
Sent from my SAMSUNG-SGH-I747
the copper tape or copper wire trick will do.
there is a thread here where someone took a qi receiver pad and modified it to fit several extended batteries.. search this specific forum. it's there.
Qi Wireless Charging Receiver with Extended battery
zolo185 said:
I've heard of people using copper tape to connect both ends
Sent from my SCH-R530M using Tapatalk 4 Beta
Click to expand...
Click to collapse
I am also interested in charging the extended battery using the Qi Wireless receiver for my S3.
I purchased the recommended copper tape but had no success.
Are there steps somewhere in the forums that could show you the steps?
I do not want to solder anything to the contacts.
Thanks for your help
search this specific forum. there's a link or a thread here with a step by step.
Hi this post is a bit old, but I think very relevant today. Most tags will not work with an extended battery because of where the chip is located. I'm finding that it needs to be lower and the only ones that do that are the ones with a longer contact neck. I just purchased a 6400 ma battery and back cover for my s4... and discovered my qi I receiver tag will not work... unless I fool around with it a lot like putting a bunch of tape underneath that neck part to raise it on the short version. But with all that little bit of extra tape makes the back cover insufficiently loose because it can't snap-in because it's too thick of a battery. But I played around with a little bit as I told you above and got it to work but I couldn't keep the back cover on. So my in-enept modification failed... I read a review on Amazon or a gentleman got it to work but I notice his cute a receiver tag had the longer neck. I know the company tylt makes one, & I am calling him in the morning just to verify that is the one actally still selling.
Extended Battery + Qi Pad, Back Plate Doesn't Fit
I'm having a similar problem with my Galaxy S3 extended battery + Qi charging pad. I was able to modify the Qi charging pad to fit above the extended battery pretty easily, even though the end result is a bit kludgy. Basically I just soldered two thin wires to the contact points on the charging pad then used a piece of foam to space the wires appropriately. I wrapped this in electrical tape and tinned the ends so they'd make a solid connection to the phone contact points.
>I can't post links yet but you can see a picture of this on imgur: i.imgur.com/KJOU4I5.jpg
This worked great, except that the extended back casing that came with the battery doesn't fit properly when the Qi charging pad is inserted. The back plate that came with the battery is made of hard plastic so it won't bend leaving me with an extended battery + Qi charging but no back case. All the back plates I've seen on eBay look identical to the one I was sent. I'm going to try heating and molding the back, or perhaps sanding it down (though it's already pretty thin) but at this point I'm not super confident.
WARNING: I am not responsible if you break your phone. Proceed at own risk!
So I have received a ton of questions regarding how I added Qi to my phone, and its sort of scattered throughout this thread so I decided to edit the OP and lay it out step by step.
Here are the parts I used:
GalaxyS4 charging card: http://www.ebay.ca/itm/331536120289
LG G3 coil combo: http://www.ebay.ca/itm/261756381973
You will need both becase the S4 card does not include NFC, and the G3 card does not include the Qi PCB circuitry.
power down, remove sim, remove battery cover, remove lower speaker module. you can find how this is done here: https://www.ifixit.com/Teardown/OnePlus+One+Teardown/26484 (you do NOT need to remove the upper cover nor the battery. just the back cover and lower speaker assembly)
Solder wires to the outside pins:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Route the wires into the battery cavity, replace the speaker. Here is the wiring diagram of a Micro-USB cable. Since the OPO is laying face down, this image would have to be "inserted" into the plug on the OPO then flipped so the narrow part of the plug faces up. The +5 pin ends up on the right like in my photo above.:
Remove the paper from the S4 card, cut out this part. Be sure to take note of which trace leads to the "outside" and "inside" of the coil:
and solder the wires from the micro-USB port to the coresponding pins marked on the S4 PCB (on the right side in this image) +5 & GND. I used a small piece of thin 2-sided tape to stick it to the battery.
Also follow the traces in the PCB for the Qi coil side. On the left side of the PCB I added a red wire to the trace that goes to the outside of the coil, and a black wire to the trace that goes to the inside of the coil:
I then removed the G3 Qi/NFC coil from its paper backing, and cut to seperate the NFC from the Qi traces. I just cut along this gap:
Next just align the POGO pins on the OPO to the NFC pins on the G3 card:
I "accordioned" the NFC traces so that the coil will sit higher / more central on the rear of the phone. Use 2-sided tape to hold it in place.
Then take the leads you soldered to the coil side of the S4 PCB board and match the red to the lead that goes to the outside of the G3 coil.
Carefully stick it all down to the battery. Here is the finished install:
Now just remove the NFC coil from the inside of your back cover. I also removed the sticker from the inside of the styleswap cover (only exists on bamboo - does not exist on the black or white covers). I also sanded down the plastic ledge around the location of the OEM NFC to free up a every tiny bit of available space:
and close everything back up. Mine fit perfectly flush with the bamboo cover:
Done!
I have an LG WCP-300 Qi charging puck. It has a rated output of 1000mA. It looks like this:
and I consistently get 850-900mA while charging:
NFC works exactly like stock, the Micro-USB port also works exactly like stock. I can still charge over micro-USB and get the proper 1800mA charge rate while using it.
Any questions just let me know!
That's awesome man. I think I'll do that as well!
wow
may i know what is the app you used to measure the charging current?
mtxx1 said:
may i know what is the app you used to measure the charging current?
Click to expand...
Click to collapse
https://play.google.com/store/apps/details?id=ccc71.bmw
burnski said:
https://play.google.com/store/apps/details?id=ccc71.bmw
Click to expand...
Click to collapse
How's the heat output
sent from my amazingly awesome OnePlus One with Stereo Mod
Don't forget to hit thanks!
abhi08638 said:
How's the heat output
sent from my amazingly awesome OnePlus One with Stereo Mod
Don't forget to hit thanks!
Click to expand...
Click to collapse
It's been sitting on the charger for the last 8 min, never exceeded 28°C. True test will be tonight when I let it charge all night.
So it sat on the charger all night. Warmed up to 30°C as it approached 100% Ruth cooled back down to 28.
burnski said:
So it sat on the charger all night. Warmed up to 30°C as it approached 100% Ruth cooled back down to 28.
Click to expand...
Click to collapse
Thanks! How long did it take to get a full charge
sent from my amazingly awesome OnePlus One with Stereo Mod
Don't forget to hit thanks!
abhi08638 said:
Thanks! How long did it take to get a full charge
sent from my amazingly awesome OnePlus One with Stereo Mod
Don't forget to hit thanks!
Click to expand...
Click to collapse
Check the first post, I just edited it with the details
For anyone interested, here is last nights batter log. Note that I put it on the charger last night around 11:45pm, took it off the charger at 6:48am this morning.
burnski said:
So for two years I loved having wireless charging with my nexus 4, and the lack of it with the OnePlus One was the only shortcoming I settled over. I finally got tired of going without it, so decided it was time to do something about it. I had a spare qi receiver for a Samsung s4 kicking around so I decided to open up my opo and perform surgery. It was a success and I can finally bid farewell to the loose cables laying around again!
Note that with the screen off it charges at approx 460mA. Sure it's not as fast as the stock charger but this is about convenience not speed. If I'm in a hurry I can still use the stock charger for a bump... But the reality is that my old n4 was always fully charged because whenever I sat it down I sat it on a charger.
Edit: so it's spent the night in the charger and I found something interesting according to the battery monitor widget log.
I put it in the charger at 11:45pm with 28% battery remaining. It charged at a rate of approx 875mA and by 1:30am it had reach 80% battery. Then the battery rate of charge dropped to approx 100mA until it reached 100% at approx 6:00am.
Click to expand...
Click to collapse
This looks like a great mod, would you mind putting specific instructions on how to do it? I can get the idea from the pics, but I don't want to mess anything up. Thanks.
This would be great.. Please instruct.
its pretty simple. just look at the pics and be extra careful when you solder.
I just switched to a OPO from a Nexus 4, and wireless charging is the only thing I miss... well, and Seidio cases and holsters; I really like their products.
Anyway, couple questions about your mod; do you think copper tape would work? I'd prefer not to do any soldering. And, does your coil interfere with NFC function?
I put an s5 qi charger in mine. 750-800mah screen on. Screen off approximately 15-20% per hour. The NFC blocks alot of the potential. Maybe place your coil between the antennae and the back cover.
Glad to see people are not afraid to tear apart their opo
Lupercal said:
I just switched to a OPO from a Nexus 4, and wireless charging is the only thing I miss... well, and Seidio cases and holsters; I really like their products.
Anyway, couple questions about your mod; do you think copper tape would work? I'd prefer not to do any soldering. And, does your coil interfere with NFC function?
Click to expand...
Click to collapse
I actually bought the white style swap back that doesn't have the nfc. I honestly have no use for the nfc coil so that buys me 1-2mm of space.
If I do find I need nfc down the road I'll buy the lg g3 qi/nfc combo coil and swap it out.
Has any tried to get a charger with the micro usb between a case (diztronic) and the back?
I'm a bit worried about ruining the sandstone so i may get a generic cover
It should work fine, just means access to the port will involve removing the case.
burnski said:
So for two years I loved having wireless charging with my nexus 4, and the lack of it with the OnePlus One was the only shortcoming I settled over. I finally got tired of going without it, so decided it was time to do something about it. I had a spare qi receiver for a Samsung s4 kicking around so I decided to open up my opo and perform surgery. It was a success and I can finally bid farewell to the loose cables laying around again!
Note that with the screen off it charges at approx 460mA. Sure it's not as fast as the stock charger but this is about convenience not speed. If I'm in a hurry I can still use the stock charger for a bump... But the reality is that my old n4 was always fully charged because whenever I sat it down I sat it on a charger.
Edit: so it's spent the night in the charger and I found something interesting according to the battery monitor widget log.
I put it in the charger at 11:45pm with 28% battery remaining. It charged at a rate of approx 875mA and by 1:30am it had reach 80% battery. Then the battery rate of charge dropped to approx 100mA until it reached 100% at approx 6:00am.
Click to expand...
Click to collapse
does it matter which pin gets the black and which pin gets the red? I'm looking at an S5 coil that i want to adapt to my OPO, but that coil doesn't identify red/black...
This weekend, I did a well deserved 2015 Upgrade to my Galaxy Nexus, by making it compatible with Qi charging stations.
Showcase: https://www.youtube.com/watch?v=sbaimVOVAic
First thing I did, was take the phone apart. It's very easy and nearly impossible to do wrong. All you need to do is take out battery and sim card along with all the screws behind the cover. Then use a guitar pick or something similar to loose the clips around the screen: Start with the clip on the left, right below the volume keys, next the one above the speaker/frontfacing camera and the last two are located below the power button. This video shows how to do just that: https://www.youtube.com/watch?v=WIAM5pxdUiM
Afterwards, i drilled two holes with a 1mm drukk through two of the three contact plates, put small cables through said holes from the other side and soldered them to the contacts. It had to be as thin as possible, as the contacts make contact with the main board with tiny springs, that don't have a lot of give.
The three contacts are in the following order:
Left = +5V
Middle = [rumor]Samsung Fast Charge regulation[/rumor]
Right = Ground
After that was done, I use small metal strips (~0.5mm thick), shortened the cables and soldered them to these strips. Afterwards, I put the phone back together and fixed the position of the contacts according to the position the contacts of the Qi were in.
I had to scratch off some of the notches on the backplate, as these were in the way, due to the cables I had to route along the left side. Finally, I fixated the Qi module with some doublesided tape to the backplate and voilá, it was finished.
This cost me like 5 bucks for the noname aftermarket Qi module (charging station not included) and a few hours to get it all done!
If you got questions, feel free to ask (post, not pm pls!). Any kind of feedback is also welcomed!
Nice work! I added one of the USB qi coil addons and I found it got very hot when charging. I was worried it'd heat the battery up and shorten the life of it....
bamtan2 said:
Nice work! I added one of the USB qi coil addons and I found it got very hot when charging. I was worried it'd heat the battery up and shorten the life of it....
Click to expand...
Click to collapse
yeah, im experiencing a similar issue. Looking at the current the qi station consumes, my module doesnt seem to throttle at all (via usb, it starts at 1A and, starting at around 85% charge, it slowly drops to 0A).
The Qi module should communicate with the station and signal the charge rate and subsequently full charge status (= no more charging). nada. I ordered another module by another manufacturer to see if it makes any difference. though, I suspect the GN just isnt fit for Qi, no matter what
P.S. The temps of the battery quickly go up to 45°C. When using normal usb charging, 40°C is already pretty rare. However most of the heat is not produced by charging the battery itself, but by the coil transferring the temperature. the backside of the battery remains a cool 30°C, even after charging for a long time using Qi.
Did you solve the high temperature problem? I was thinking of a similar mod but also got high temps with an external USB plug-in receiver module.
Great! I wanted to do something like that, bought the Qi unit, and a platform for charging, but before soldering checked both charges, and I did not like the fact that you need to put the phone just to the point that he began to be charged
Okay... i´m trying to make a mod for my Z1C to make it qi compatible....
I have the magnetic connector from a dock (which is broken).
So, using the connector + cover + glue can make it work.... and of course, need to solder the receiver to the connector....
But, the big question... which receiver should i use?
First of all, i´m from Argentina... so i have a limited access to receivers.
I´ve seen here receivers from Samsung Galaxy S3, S4, S5, Note III and Note 4, and a few others generic...
The maximum current that could find was 650mA... but read some comments that the output 1000mA is a lie... and there is no difference between the receivers...
So, which one should i buy?
Thanks to all!!
Finally, get a 700mAh receiver, and cutting out the cable, mixing + soldering + glueing it all together, and now it´s working....
Samsung GS4 1000mA QI receiver
I have a few Galaxy S4(1000mA)/S3(800mA) QI receiver cards.
The cards are different depending on the contact points location in the phones.
So you just soldered the internal magnetic charging points to a QI receiver card inside the phone?????
If you have the QI Receiver inside the phone (only real place for it), how much pressure does that place on the back cover??
The back cover tends to break away from the frame without much effort, so having the raised 'bulk' of a Qi card in the phone would only add to the pressure for the back cover to separate.
On Samsung phones (GS4 which I've added QI cards) it does take a bit of brute force to chip the back cover on again and some GS4 aftermarket cases/covers can not be used with the QI card installed due to the back of the phone being ever so slightly raised.
I have the QI receiver cards, glue seals rings for Z1C back cover and the Qi chargers and it is something I have thought about, but with three working magnet DK32 docks around the house, it's not something I have advanced at this time.
Well done for getting it to charge via QI charger if that is what you've done.
Maybe a photo would be nice.
Okay... now, the photos:
The tape is over the receiver module.
The original contacts from the receiver were removed, and over there, was soldered some copper tape (that can be seen in the photos).
The contacts were made by opening-cutting a magnetic cable, soldering it to the copper tape, and then glueing it to the cover, to maintain position.
The charger seems to be very picky about position. Searching over the internet, seems to be a common issue with this model...
Hope it´s usefull...
Well... about the charger, there seems to be an easy fix to it's pickiness... Take off the upper side... That way, the thing will gone a cool itself, and the connection will become a lot easier...