Wireless Charging Thread.

Hi Guys,
I was one of the users who investigated and found the Note 2 has the QI pins present, but not enabled by the TMO processor variant. Regardless, there was a mod made for it and I later released an updated process that turned out to be a little easier.

This morning, I decided to investigate the N3 and I can confirm (as it has been discussed here already) the TMO Note 3 does in fact have the QI wireless charging enabled out of the box. However, as discussed, that means nothing if there is no receiving pad in the rear casing area to convert the inductance signal to the required 5VDC feed. As shown in this thread, you can use a modified Note II receiving pad, but I found the stock setup to be a little bulky and the rear case seems somewhat "humped". So out came the soldering iron, siccors, and some patience.

First, regarding the pins above and to the side of the battery, a few of the observations already made by others are correct -

(2) pins above the battery = NFC

(2) of the (3) pins to the left of the battery = QI Wireless charging [ pin1= + / pin2= - ]
(The 3rd pin appears to be an external current monitoring/future use pin)

With that out of the way, let's rip apart a stock N2 QI pad! I will use a 5VDC 1000ma N2 pad, which is rather thick at 1.75mm. But, with the two sides removed (hot blow-dryer/heat gun is your friend), the height is reduce to near 1mm. (tip - carefully cut/save a 3mm x 5mm section of the foam padding as we will use that later).



Since we have to "flip" the layout of the QI pad, I proceeded to do the following in order to keep by the inductance coil as close as possible to the rear casing surface and remove the thick hump cause by folding the contact pads copper trace over (proceed only if you have experience with a soldering iron and electronics in general):

A. Cut a horizontal slit in the protective laminate layer just below the area the oval inductor sits on (and above the little copper PCB area) so the oval inductor can be CAREFULLY slid and flipped to the opposite side without messing up to two leads.

B. Cut off the pin contacts laminate section so it can be flipped as well and soldered back together(now facing the opposite direction and on the top/left side).

C. Trim the remaining surface area around the pad perimeter to insure the pad stays within the battery cavity section of the rear casing. A Quick placement/fit test on the battery side is done to insure all is well.



Once confirmed functional, the pad circuitry can be properly placed on the rear cover plate and secured using one of the previously used cover-stickers (the one without the padding). If needed, place that 3mm x 5mm foam cushion you cut earlier under the area of the pin contacts to help keep a secure connection when the casing cover plate is reattached.



The final test is to see how everything does after the final assembly is complete. I use the Samsung OEM wireless charger, but any QI standard charger should be fine.



Lastly, it seems the stock kernel limits the wireless charge current to 640-650mA, which is expected. Hopefully, when a custom kernel is released, the current limiting will be removed and allow it to go up to 990-1000mA with this specific pad like the Saber variant did for the Note 2.

Hope this helps and sorry if I missed anything or wasn't as detailed as I usually am. It is a nice Sunday here in San Diego and I should be outside with the family!

Cheers,
Scott

Observations on wireless charging for Note3 & S3 on Tylt VU

A month ago I was even more excited to receive my Tylt VU than when I got my Note 3 in hand. This is because I was fascinated with wireless charging right from my S3 time to be able to charge it without the need to plug and pull wires from these hungry devices. But lack of reliable accessories made me to wait until this long.

More than receiver stickers on battery I thought OEM φi compatible cases are more reliable and long lasting. Reading through the positive reviews and few other misleading articles about Samsung S-view flip cover for Note3 having wireless charging capabilities I was all happy with the slim and decent looks it added to my N3 along with its s-view sensors until I received my Tylt VU.





To my biggest disappointment I see nothing happens on my Note3 with S-View cover when placed on Tylt VU. Being on a custom ROM I even tried my S-View on another N3 with stock rom, still no signs of charging. I was so confident about my Tylt VU that I started shouting at the seller who sold my S-view and also at the Samsung customer service for denying to look into this defective case under warranty.

After careful reading I realized how much I was fooled by Samsung cheap sales trick to sell non Qi version of its S-view covers in India. You will hardly find any difference between these two versions of covers unless you know 5 pins are required on the inside of this case for both wireless charging and s-view functions unlike two pins for just S-view sensors.





See the difference yourself

https://www.samsungindiaestore.com/Products/Accessories/Note3_S_view_Cover_EF-CN900BBEGIN (Without wireless charging support)

http://www.samsung.com/za/consumer/mobile-phone/mobile-phone/galaxy-note-accessories/EF-TN900BBEGWW (With wireless charging support)


I can understand the seller for not having idea on these identical duos, so asked my apologies for shouting at him but the service center guys they are pathetic as they dint even know what it means by wireless charging.

This time I ordered two battery receiver stickers for N3 & S3 and another built-in receiver replaceable back case for S3 as a backup. I thought I cannot use my S-view case anymore when I stick the wireless receiver on the battery covering all the 5 pin holes so I ordered a SPIGEN SGP Ultra Fit Case.

In a casual attempt I tried fitting the S-view case over the wireless sticker and to my pleasant surprise I see both S-View and Wireless Charging works now. I think the pin could touch the contacts right from the back of battery sticker to make everything work.






Looks like Tylt VU is worth the extra bucks spent on it as it charges in any angle the phone is placed. I don’t have to be so conscious in the middle of the night If I have to place it back on tylt VU it charges without missing it. It even charges N3 through my Spigen fit case with ease.









Some facts and figures from my testing with Note-3 using different charging sources.


Using Note3 Samsung Charger (Output Current – 2000mA)
Charges at 1200mA




Using S3 Samsung Charger (Output Current – 1000mA)
Charges at 900mA




Using Tylt VU Wireless Charger (Output Current – 1000mA)
With battery sticker charging efficiency lying between 60-75%,
Charges at 640mA



On average my Tylt VU charges Note3 at 20% per hour taking around 4.5 hrs for a full charge.


Using Laptop connecting with USB2.0/USB3.0 port
Charges at 450mA




I could make my Note 3 charging at 1800mA for few seconds second by placing it on Tylt VU while it is connected to its 2000mA power charger.

. . .the continuing saga of "what is the best wireless charging / NFC for use with the Otterbox Defender case?'. . .

The newest configuration I am running is with the QI/NFC circuit from the OEM Samsung charging back, fitted to the stock Note 3 back cover.

After separating the circuit card from the OEM charging back, I was able to carefully remove the actual circuit from the plastic card, leaving me with the fantastic OEM Samsung QI/NFC in a package just as thin as the white Amazon QI card I'd been using for the last couple weeks.

I mounted the circuit directly to the inside back cover so that I could remove the cover and/or battery without disturbing the card, using clear 3M paint protection film to mount the card - this protects the circuit, and holds it all around the perimeter. (The thin metal 'T' on the OEM card is a heat sink for the IC chip).

The first 3 pictures below are views of the back cover on, showing the very slight deformation from the mounted circuit card - fits snugly inside the Otterbox Defender case, but without any issues - and that is with my iLoome tempered glass screen protector on as well.

The last picture shows the OEM QI/NFC card mounted to the inside of the back cover of the Note 3.

Both the wireless charging and the NFC have been thoroughly tested with this newest setup - and they work like a charm!

Cheers'

Dan

Ultra-thin 0.5mm Qi Wireless Charging Receiver Card Coil for Samsung Galaxy Note III 3 N9005 N9500 with Full NFC Support

Picked up another Qi Receiver that arrived today. This was purchased from Amazon from the link: http://www.amazon.com/gp/product/B00GFGL0XE

It was $21.99 and had free shipping (I used Prime but paid $1.99 for next day)

It is advertised as: 0.5mm and it is easily the thinnest of the Receivers I've physically seen so far, but might be a tad bit thicker at the chip. But it is still very slender. It has 2 pins on the side for the Qi connections, and 2 pins on top for NFC support. The chip itself is near the top of the card and sits just under the camera. The back cover of the phone however fit as flat as the TechMatte that I did a review on.

Some pics:

The box and the card taken out (there are no instructions but it is fairly easy for even a very novice user to figure it out)



Other side of the box:



Cover side:



Battery and connector side:



Unlike the Techmatte, there are some differences:

• Slimmer
• No cover side connectors that you could use for say the s-view flip cover
• Has NFC built in and and works well

Will add pics of it inside the phone when I get my other camera out.

Oh and it appears to charge just fine. I was seeing 640mAh when I checked it with two different apps to check.

Last night I charged 1st time the phone with QI, and I'm totally fine of the time that was 4 and something hours from 15% to full. Also I was checking every now and then the temperature with a laser thermometer between the backplate and the base because I was afraid that the coil maybe was somehow hot (I never had used a wireless charger in anything before) and temp was max at 38C so all are good in that area.

Sent from my SM-N9005 using Tapatalk 4