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HD2 Charging without USB???

Hi
I am looking for a way to charge HD2 without need to allways plug usb cable to mobile.
Inductive charging would be great, but we are not that far, but HD2 has power connector under his back cover, it is there for charging with car kit. Possible solution would be to use back cover with charging connectors and appropriate charging base. So I would just have to lay my phone on charging base without any connectors.
Is something like that on market?
Thanks
Martin

nope..........

There is in fact such a thing, but i do not know if it would work with the HD2.
I have seen something of that nature at cebit or something, really cant remember which computer convention it was, but it has been reviewed in various mag's
hxxp://www.berryreview.com/2009/10/30/gadget-of-the-week-powermat-wireless-charging-pad/
(change hxxp to http)

I have seen an inductive charging pad system at Carpone Warehouse in UK.

Technically, i suppose it would be reasonably simple for a company like Powermat, or other inductive charging manufacturers to make a replacement battery cover for the HD2 that ties into the contacts on the back of the phone, which were originally going to be used with the car holder, before it got redesigned, and allow recharging of the battery.

Well... Inductive charging... Would be nice.. But:
There must be a coil build in in the back cover and some regulator hardware. That is making the back cover thicker. This might be no problem if they do it right.
An other posible problem is the induction itsef. It is close to the electronics of your phone. What will happen with the signals and even can it damige the electronics?
I would like to have it, but only when it is tested and no risk of dameging the phone and disturbing the signals.

Well Powermat make back covers for iPhone, Blackberry, Nintendo DS so it can't be doing that much damage

has anyone seen a power mat backplate yet ?

I believe from the CET and CeBIT 2009 and 2010 technology was shown for the integration of current wireless charging in mobile phones. I believe HTC has added a second charging connection just below the battery, behind the battery cover. Perhaps a flat coid can be placed at the back of the current cover. The coil can be connected to the secondary charging connection. It was previously inteded by HTC to be used with a special battery cover that connected to the first concept model of the HTC HD2 carkit.
I believe Duracell or another battery company demoed a wirless charging system that could be integrated with current mobile phones. Maybe it is a start to look there?

Even if it worked for hd2 it would charge the battery at very very slow rates (typically @ less than 80ma)

I never have my phone charging through usb...only into my pc when im copying files or flashing Roms
I just got a spare Battery & Desktop Charger, as i work 12hour shifts (listening to music) it comes handy having a spare battery

As long as inductive charging is in it´s childhood-state it´s another waste of valuable energy.
Not for the single phone or person but taken together the ever increasing billions of users it´s a massive waste of resources.
Did You know that the worldwide use of internet (PCs, Notebooks, Netbooks, Phones, Servers, transmission lines, amp-nodes etc.) consume already more energy than worldwide car-traffic ? Should make You think ...............

Hello,
Two quick notes: The Palm Pre battery cover coil has its terminals on the correct side and very close to the charging terminals in the chassis of the HD2, given the amount of room in the chassis. Unfortunately, it looks like the EVO has a larger battery cover, and from the pictures I doubt that the coil assembly would fit length-wise under the HD2 cover. I'm not sure if there are electronics in the "tail" of the assembly, but if that could be removed I think it would be easy enough to find terminal block that would fit in the indent of the HD2. If you look at the Palm assembly you can see the bulge for the coil, the four bulges for the stabilizing magnets (?) and the terminal, I can't see what would be in the tail besides maybe a diode.
Unfortunately, though, the cover of the HD2 is made of metal, which I think would cut down further the efficiency of the inductive coupling of the coils, maybe critically so. If they're using 1A 5V supplies for the base, it might push the supplied charging amperage low enough that it wouldn't be useful. So I think that until someone fabricates a plastic cover, adapting the Palm Touchstone might be difficult.
I do have to disagree that the use of the principles of induction is anything but mature; these inductive charging systems are basically loosely coupled one-to-one transformers, if I'm not mistaken. Engineers made excellent use of inductive coupling a long time ago, if nothing else those tube amps that some folks like so much sure did.
Regards

Any idea what the order is for the contacts below the battery?
I have my palm pixi cover and touchstone. I plan to remove the cover and attach everything to a hard plastic back cover. I just need to connect it to the right terminals.

jamesbryant said:
Any idea what the order is for the contacts below the battery?
I have my palm pixi cover and touchstone. I plan to remove the cover and attach everything to a hard plastic back cover. I just need to connect it to the right terminals.
Click to expand...
Click to collapse
Unfortunately I have yet to find the pin-outs for these contacts. Please share them if you find the information.
You might get some information from this hack created by Derek Hughes. It looks like he has had a similar idea to yourself. Unfortunately he does not use the hidden contacts under the battery cover, instead he just re-routed the micro usb port, kinda messy and a bit impractical.
This hack was carried by many of the phone and tech blogs. But the links below are from Hackaday.
http://hackaday.com/2010/07/28/inductive-cellphone-charging-without-voiding-warranty/
http://hackaday.com/2010/08/01/update-custom-cellphone-induction-charging/
Good luck.

Can we combine or close this in favor of this one?
http://forum.xda-developers.com/showthread.php?t=762783&page=2

I received an e-mail from Powermat today and it looks like they have a receiver of some sort for various phones, HTC HD2 included. Unfortunately the unit is out of stock at the moment. Did anyone manage to snag one?
http://www.powermat.com/us/receivers/htc/receiver-door-for-htc-hd2.html

http://www.powermat.com/us/receivers/htc/receiver-door-for-htc-hd2.html
theres your solution
oh damit someone was before me well double means better! :>

gmontem said:
I received an e-mail from Powermat today and it looks like they have a receiver of some sort for various phones, HTC HD2 included. Unfortunately the unit is out of stock at the moment. Did anyone manage to snag one?
http://www.powermat.com/us/receivers/htc/receiver-door-for-htc-hd2.html
Click to expand...
Click to collapse
I would get one
seems nice, whoever gets one
please do make a Video

http://www.powermat.com/us/pick-a-b...at-wireless-charging-station-for-htc-hd2.html

Qi Charging adapter?

Do you guys think they'll make a Qi charging adapter? The contacts would connect to the pins on the underside of the witch and the charging coils could just be covered by a black sticker. It could be like the S4 inserts for Qi charging. Wouldn't add bulk either. What do you guys think?

Daistaar said:
Do you guys think they'll make a Qi charging adapter? The contacts would connect to the pins on the underside of the witch and the charging coils could just be covered by a black sticker. It could be like the S4 inserts for Qi charging. Wouldn't add bulk either. What do you guys think?
Click to expand...
Click to collapse
I'm surprised a Chinese company hasn't done this yet. Qi receivers are easily thin enough and making a charging dock like a normal watch base with a Qi coil on top would be simple enough I think. There must be a reason this hasn't happened. I'd buy it for sure. I can't stand the stock charging cradle and I'm not spending $35 for a spare one either. That's highway robbery. I'd like to see this happen.

The hardware needs to support it, but I am willing to modify hardware given to tools and instructions.

I'd buy one for sure. I'm an avid QI user with a charger bedside, couchside, in home office, work office, and the QI car charger for my Note 3.
Please make this!

3rd Party Accessories

Like many of you, I've been disappointed with the lack of company communication and in particular communication regarding accessories. So I wanted an opportunity to discuss and hear recommendations of 3rd party accessories well suited for the Saygus V2.
I'll start it off by mentioning some of the items I've ordered and/or received. I'll come back to update on compatibility and usefulness of the accessories once we all have our V2s.
For a card dock with wireless charging. I ordered the Air Dock 2.0 with the CD mount.
I've received the Lexar Professional 128GB Class 10 UHS-1. Advertised at 95 MB/s read. Real world read 70 MB/s, write 20 MB/s.
Finally, I've ordered the Skinomi for the Saygus V2. I figure a clear skin is the best way to handle the lack of a case. With the thinness of the skin, I'm figuring there isn't much chance of interference with the wireless charging.
I'd be glad to know what the rest of you have or wish you had for your Saygus V2. Lets hear it.

YOu should also consider iottie's QI car charger as well, it's really amazing. Although if you you have a vynl/leather or a cushioned dash ... don't get it if you want to use it on it. People have had some really disastrous effects from using it on their dash (ripping the leather, leaving a round indent on a cushioned dash.) But if it's on the window or on a hard plastic dash the thing won't be coming off as it's stupidly suctiony. They've also released the Easy One Touch with QI charging now which would be better for a wndow application.
http://www.amazon.com/iOttie-Wireless-Standard-Motorola-Smartphones/dp/B00IRHQZTI/ref=sr_1_1?ie=UTF8&qid=1431669740&sr=8-1&keywords=iottie+qi

Just in case Saygus doesn't provide one...
Here is what appears to be a very good Quick Charger 2.0: http://www.amazon.com/Qualcomm-Cert...d=1431795644&sr=1-2&keywords=quick+charge+2.0
:good:

I would just like a Saygus V2 to go with these accessories. I really hope these guys deliver.

I really hope Anker makes a huge battery like they did in the galaxy s4. I want days of battery life

I ordered the BestFire® Compact High Efficiency T-900 3-Coils Phone Stand Cradle Qi Wireless Charging Pad Dock for my office. Probably get a flat QI for the house.

The largest wireless portable battery that I've seen is about 10,000 mAh. Anyone seen better than that? I was looking for something in the 13-15,000 range to match what I have now.

I sold some 15000mah a while back so they exist.

Skinomi TechSkin is the best protector!
Sent from my XT1254 using Tapatalk

CHOE Circle Qi Wireless Charger (Review)

http://www.amazon.com/gp/product/B013AB620C?redirect=true&ref_=cm_cr_ryp_prd_ttl_sol_0
Bottom line, the TL;DR version, I really like this charger. Of the three I now own, it's now definitely my favorite. It's large enough to make aligning your device simple and effortless (this is the only wireless charger I have where I don't feel like I need to double check to make sure that my Nexus 7 is sitting on it correctly) and small enough to not take up much space on a surface or in a bag or pocket. With the light around the edge of the charger, it's easy to see whether or not your phone is actually charging, whereas on other chargers, the indicator light is usually obscured by whatever device is sitting on top of it charging.
And don't worry about the light being a nuisance in a dark rook — one of the attached photos (the one where you can't see anything but the charging LED of my phone) was taken of the the charger charging a phone with the camera pointed directly at the light. As you can see, it won't bother you at night. One more thing, the light doesn't go around the entire circle of the charger. It only lights up about a third of it.
If you're looking for the type of charger that you can just set your phone on that isn't a dock, I'd consider this one.
Now on to the rest of my review...
When I was offered a chance to try this wireless charger, I had very low expectations. I currently own two other wireless chargers. One is actually another CHOETECH brand charger which I've been very content with (http://www.amazon.com/gp/product/B00JA7HNZO?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00) and the other is the PowerBot "puck" wireless charger which I am not very fond of at all (http://www.amazon.com/PowerBot®-PB1...373&sr=8-2&keywords=powerbot+wireless+charger). My initial expectations were based on the latter since it is a similar shape (round) to this circle CHOETECH charger.
My biggest complaint with the PowerBot charger was that the size and shape of it just made it less ideal for charging a large phone or tablet. Basically, attempting to tap your screen while it was charging meant making your phone wobble everywhere and, since the charger is so small in comparison, it's impossible to see the indicator light so that you know the phone or tablet is on the right spot and charging. I figured these issues would just be inherent with round chargers, but that was not the case with this CHOE circle charger. It turns out I really like this charger, but I wish I could have got the black model instead.
The ring around the edge of the charger is rubbery to provide grip. For my leather back G4, that did nothing since the phone doesn't lay flat, however my Nexus 7 is held firmly in place so I don't have to worry about it sliding around. It comes with a decent sized USB cable (off the top of my head,I think it's two or three feet). The indicator light is well lit in light, more than enough to let you know it's working, and then it's basically not there in the dark.
There's really not much more to say. It's a great charger and I think $20 for it isn't bad at all.
5/5 if I had to rate it.
All photos taken with my G4. Models pictured are my G3 and Nexus 7.

Thanks and good to see your review here. May I know where did you get your cover case for your G4?
I was checking the wireless charging cover case and the charging pad.
https://www.youtube.com/watch?v=QDyBmX32L1M
Quick Circle Case http://amzn.to/1UMWzGw
Qi Charger http://amzn.to/1UMZdvO
With 36 bucks in total, is it a nice combo?

Does wireless charger really work? I can't believe it... I will still stick with a normal charger...

CHOE one of the best wireless charger i have even had!
I never imagined, I can see this brand on XDA, i'm a big fan of CHOE. I nearly ordered of thier products...
more than two year ago, i got one of the wireless charger it works great up to now!
thanks for sharing this new information. i'm going to order it. :victory:
---------- Post added at 09:34 AM ---------- Previous post was at 09:24 AM ----------
Hillium said:
Thanks and good to see your review here. May I know where did you get your cover case for your G4?
I was checking the wireless charging cover case and the charging pad.
https://www.youtube.com/watch?v=QDyBmX32L1M
Quick Circle Case http://amzn.to/1UMWzGw
Qi Charger http://amzn.to/1UMZdvO
With 36 bucks in total, is it a nice combo?
Click to expand...
Click to collapse
I had a Ankway LG G4 wireless charger case. i ordered it on Amazon only cost $14.99. superior quality!
---------- Post added at 09:38 AM ---------- Previous post was at 09:34 AM ----------
The War LOrD said:
Does wireless charger really work? I can't believe it... I will still stick with a normal charger...
Click to expand...
Click to collapse
I would like to anwser you, this wireless charger works great.
I'm useing anther item more than two years.

I had this circle Qi charger for my girlfriend. Mini size is perfect for girls.

Wireless charging would be so cool and convenient. I have three all over the house and hardly ever use my wired charger now. I also have this Choetech circle qi wireless charger that supports fast charging for my Note 5. But it would be great if it was a dock instead a pad.

hiteshonline said:
Wireless charging would be so cool and convenient. I have three all over the house and hardly ever use my wired charger now. I also have this Choetech circle qi wireless charger that supports fast charging for my Note 5. But it would be great if it was a dock instead a pad.
Click to expand...
Click to collapse
Looking so cool!

I feel like I need to review this as well, because I have so many wireless charging pad and I had to compare them with this. and it was an amazing experience.
Now, my co-worker is rocking with her S6 with the thick case, my generic charging pad couldn't even detect the phone to charge where as this Choetech had no problem charging through the thick case.
the case is about 5mm thick on the bottom, thats about 0.2 inches, still charges, nice!
also charges my moto 360 without any problems, guess what though! it charges my moto 360 upside down too!! that was amazing. so Choetech must have considered phones with thick cases that are having hard time wireless charging. I'll definitely put this company in my shopping list for my future mobile devices accessories from now on. they have earned my business.
it outputs to about 5w when charging, so it will take about 3 hour'ish to top off your phones, and about 45 minutes for your smart watches.
please see photos below.

Picked up this charger based on this thread and really like it so far. I was worried about the brightness of the light ring for when I sleep but it is extremely dim, to the point that it doesn't add any light to the room.
I'm using the stock charger with it and have pulled the wireless&nfc sticker from an ankway circle case (I officially must hate circle cases) and installed that to my original plastic back cover. I also have the cruiserlite bugdroid case on the phone and it still works great. I took a 3.5 hour nap and the phone was 100% charged from 22% when I woke up. I'm sure it hit 100% before I woke up.

Project QI charging case for Xperia V

Hi,
I love the idea of wireless charging, especially with a waterproof phone so you don't need flaps or something like that for the charging port.
Ok, well the charging port of the xperia phones is very nice and I was using a dock quite a long time.
But hey, lets try charging the phone via qi.
This is the case thei the receiver mounted:
Since I decided modding the phone itself is not possible until larger modifications are made I decided modding a case to become a charging case.
The dock-ports are ideal for this.
So I bought a QI reciever. The reciever for the Samsung galaxy note II would do the job because the polarity matches with the polarity of the dock port (the upper one on the phone is the positive terminal).
The first receiver I bought was mechanically perfect because it is very small and thin. I taped it to a QI charger and connected the pins via lab wires to the phone. Unfortunately the receiver starts pulsing its output. I think the phone draws more current than the receiver could handle. Watching the receivers output with a scope showd that the receiver has much ripple and the voltage is around 7 V. This is to much, luckily the phone took no damage.
Here is a photo of the bad one:
So I bought a second receiver.
I'm from germany so, this is a link to german amazon.
You have to remove the 2 gold pins and replace them with 2 spring contacts.
I was using these contacts:
Put the receiver in the case, put in the phone and align it, so the spring contacts can touch the dock connector.
The remove the phone, fix the receiver with some tape and use a 2 component epoxy the fix the part with the spring contacts at its correct position.
Oh, and cut a hole for the flashlight led of the phone.
I used J-B-Kwik.
I uses the glue also at the outside to provice stability:
the case is just a bit to small for phone and receiver but it holds the phone nicely.
I forgot my qi charge at the office so I cannot provice a image with the phone charging, I can take a picture tomorrow.
Yes, the performance would be better if the receiver is mounted below the plastic case between plastic and leather. But is is to big for that. Even cutten the edged is not enough.
Here is a comparison with the old, non working receiver, it is smaller and I cut the edged.
I works well enough.
Hopefully this would be usefull for somebody.
I you have any questions, don't hesitate to ask.

because I am a new user I am not allowed to post links