yashsingh1/xdaforums huggingface dataset:
[Nexus 5 Accessories] mmmmBACON:
What is your definition of "non-cheap"? Name brand, price premium? If you look on amazon and other places, you will see these exact chargers with a company brand name slapped on it and a $10 - $50 markup. The only difference between those, and these ones is exactly what you would expect, the price and a few cents extra in ink for branding put on it.

If you can look past the fact that these are generic, you will notice that they are the exact ones you will find elsewhere, without the markup. Basically from the same factories before a company slaps their logo onto it.

For example (Amazon):

Lerway Qi charger (same as the first one on my list) http://www.amazon.com/Lerway-Wireless-Power-Charger-Lumia920/dp/B00E9MUNWU/ref=sr_1_2?ie=UTF8&qid=1394513260&sr=8-2&keywords=qi+charger $19.49

Lugalake Qi charger (same as the last one on my list) http://www.amazon.com/New-Arrival-LuguLake-Qi-Enabled-Wireless/dp/B00FXJAISW/ref=sr_1_5?ie=UTF8&qid=1394513340&sr=8-5&keywords=qi+charger $21.99

Powerbot Qi charger (same as the puck) http://www.amazon.com/PowerBot®-Com...F8&qid=1394513457&sr=8-21&keywords=qi+charger $23.99

These were just the ones at the top of the list when I did a quick search on amazon. They are the exact same Qi chargers, with markups because of branding and retailers.

The charging numbers will be exactly the same as well. If they are 1A output and follow the Qi standard, they will perform the same. That's essentially why it is a standard. That was really the point of this thread. To show that the performance of a 1A output Qi charger, is basically the same no matter what charger you buy. So there is no reason to order a name brand charger, or a more expensive one, because there will be no performance benefit.

Also, I basically charge exclusively using Qi chargers now (except when I'm in the car, I use wired) and I haven't had a single problem. And as for the Chinese manufacturers, you have to realize, everything is made in China. Even the Official Google Wireless Charger is made in China. I don't think you needed to throw in the "obedient" part. There are just as many shady American companies, Korean companies, etc. You can't generalize an entire Country like that.

Done and done.

It turns out (quite surprising really), by my super scientific testing, that you can fit exactly 81 sheets of lined Hilroy loose leaf paper between the charger and the phone, and it will still charge! Haha! :) I figured that would be something you could replicate. Since you are probably going to tear it apart anyway, I did it on the cheapest one, which was the first charger on my list.

Squishing them together and roughly measuring it, gave about a 1/4 inch.

The price of entry isn't very high. It really is a "why not give it a shot" kinda thing.

Well if you really want me to, I don't have a problem updating this post and adding in the dt900 for comparison.

But a round trip to Canada and back, I'm not sure if it's really worth it.
[Nexus 5 Accessories] dehsA:
Yup, that also includes the majority of Apple's products!

Any drop in the current as you add more sheets of paper?

Also, do you actually use all of the chargers you bought? Which ones do you end up using the most/least?
[Nexus 5 Accessories] dicko1975:
Thanks for the review!

Great review. Convinced me to get all extravagant and splash out on the basic Qi charger. I mean, for $11 what could possibly go wrong? Now waiting patiently for delivery....
[Nexus 5 Accessories] arbenowskee:
They've upped the price to $15.

one named "Hot!!! Black Qi Standard Wireless Charger for Nokia Lumia 920/ Lumia 820/LG Nexus 4//Samsung Note 2 fast delivery" is $12.50.

I'd give a link, but don't have enough posts yet :)
[Nexus 5 Accessories] MordyT:
At 71cents each way (supposedly), I think I can do it.

Can you pm me a general address (if you don't want to give yours yet) so I can double check before committing?
[Nexus 5 Accessories] fooznugget:
Thanks, I did try pulling the rubber ring on both the top and bottom, but I don't see any screws or anything.

I will definitely consider some of the other chargers after seeing this review. I originally went with this one because of the small size.
[Nexus 5 Accessories] SurlyDuff:
Great comparison, but I don't suppose you have the time to do another two replicates and a quick 2-tailed unpaired student's t-test (really easy in Excel) to see whether any of these differences between the chargers are statistically significant? Considering how close everything is, it just seems a little arbitrary to rank the time to 100% if it turns out to change from trial to trial. I know it would require a time commitment, but it would definitely give your comparison more authority if the differences are significant.
[Nexus 5 Accessories] libertao:
Any suggestions on a replacement USB cable? I've heard the AWG is too high on Monoprice Premium cables.
[Nexus 5 Accessories] frag2:
I have the puck with rubber ring and while it holds the phone, its difficult to center 100%. If you don't, it'll constantly flicker between charge on/off...pretty annoying

i have the last one [fat rectangle with LEDs] and while its easiest to center [due to its surface area], it tends to overheat, just like the puck.

Best for price, IMO, is still the Nilkin magic disk but thats 23$:p
[Nexus 5 Accessories] matejdro:
I meant chargers that are sold by real known companies For example official chargers from Google, Nokia etc.

I realize everything is made in China, but Google for example likely imposes some kind of quality control on this while random seller on eBay can make and sell whatever he wants.
[Nexus 5 Accessories] evilspoons:
I am a Canadian who bought a DT-900 in the States, plus two LG WCP-300s in the States as well (woo Las Vegas vacation).

The DT-900 is rated at 750 mA input, not output. It is also 12 V input, meaning it has an input power of 9 W. A 5 V 1.5 A input charger has an input power of 7.5 W. The 12 V input part is weird compared to all the others, they're all 5 V in.

Where did you read it only outputs 750 mA? I can't find an output spec for the DT-900 anywhere.

I may just have to do some charge time testing of my DT-900 vs my WCP-300 with my Nexus 5.
[Nexus 5 Accessories] yokuyuki:
Awesome, dude! That's about 6 mm which is 1 mm more than the specced 5 mm charging distance. Could you also test the PowerBot puck one? I've been looking more at that one as it's smaller and requires less wood to carve out. The specs on Amazon say that it has a higher charging distance at 8 mm and I'm curious if it lives up to that.
[Nexus 5 Accessories] TidusWulf:
I have the Nokia dt-900, but the cable broke. Anyone know how to buy just the cable? Whatever I've searched online just doesn't give me solid results.
[Nexus 5 Accessories] evilspoons:
You can probably just buy/make a generic one. It just looks like a bog-standard barrel connector. According to my REALLY QUICK estimates, it seems to be 2 mm outer diameter... check yourself with calipers or something.
[Nexus 5 Accessories] TidusWulf:
I'm not an electrician, and I'm not about to plug something into the wall held together by electrical tape.
[Nexus 5 Accessories] danman7:
Did you notice or perform any measurements regarding temperature? I haven't tried any of the wireless chargers, but I had read that some cause the handset to get very hot.
[Nexus 5 Accessories] Cyb3rGlitch:
Do these support trickle charging?
[Nexus 5 Accessories] crayonhead:
If you didn't take the phone off the puck charger, would it still have charged? I'm looking at getting one, and I have the same case.
[Nexus 5 Accessories] Wooba99:
You mention replacing your USB cables with better quality ones. Do you have any specific ones you like?
[Nexus 5 Accessories] dspcap:
The seller is horrible. My item got stuck in US Customs and all of their responses are generic. They aren't really answering questions, they are just cutting and pasting responses. They are just pushing me out until I can't open a dispute any longer.
[Nexus 5 Accessories] B.Ken:
Yes, the small puck charger I purchased charges the Nexus 5 thru the case fine - it (and the Nexus charger) raise the temp of the battery higher than I think it should (especially compared to my son's Galaxy S4 - using the same puck charger).

I actually bought 3 of the puck chargers (2 for at home, 1 for at work) - all 3 raise the battery temp higher (in the case or without).

But they all will charge thru the case!
[Nexus 5 Accessories] thor1k:
personally I don't like to see mine get past 40C, in fact in many cases I've been able to keep it down to 35-37C or so when charging.

It's all about finding the optimal charging location.

I have a widget now that I use to view the battery temperature when charging.

A difference of as few as 3 mm can make the difference between 5C I've found-- 45C vs 40C.

There isn't much education about this as it relates to Qi charging, which is a shame. Thermal cycling of 20C every day is not desirable for a packaged product where tolerances between anode/cathode and mixture are what determines series resistance and battery performance, efficiency, and capacity. There's a reason the Galaxy S5 thermally throttles itself when the battery hits 35C. 35C! That's because high temperatures can damage the battery.

when I get done determining the optimal charging location for mine on my Docooler chargers, I will begin posting photos.
[Nexus 5 Accessories] thor1k:
this is lame I typed a bunch a lost it--

cliffs: knockoffs to "Qi Charger - Large Rectangle w/LEDs" exist

Bought one made and sold by Docooler from Amazon, great

Excited, buy another

Knockoff-- has plastic, non rubber feet; less bright LEDs probably at 5mA not 10+mA like the Docooler

One on right in attached pics has the rubber, larger feet, doesn't slide on table. Cheap knockoff does.

MAIN PROBLEM WITH CHEAP KNOCKOFF-- have to unplug from wall and plug back in before detects phone, like the charging circuit has a software glitch in it. Makes it pointless to buy.

So, basically, watch out, be careful, don't buy this from Amazon seller Andoer.
[Nexus 5 Accessories] thor1k:
I tried this, and with a 1A charger, and not only did it charge ultra slow, I believe the inductive loop was weakened. After 10% of charging I picked up the phone and the battery was 48C! No no no!!! I had to RMA my device shortly after this.

---------- Post added at 04:36 AM ---------- Previous post was at 04:18 AM ----------

so, what, it stops charging at 82 sheets?

keep in mind it's not the distance or the number of sheets, it's the magnetic permeance

and while "disobedient" might not be the right word, the chinese are definitely notorious for dumping out anything that they think they can sell.

based on some of the Qi chargers I'm seeing, I can understand why having a licensed consortium makes sense.

keeps the goofballs out.

---------- Post added at 04:41 AM ---------- Previous post was at 04:36 AM ----------

yes charge cycles are bad for the battery.

make sure you have a legitimate Rectangle w/ LEDs version with the rubber feet.

---------- Post added at 04:47 AM ---------- Previous post was at 04:41 AM ----------

I agree, that's true, it's why brands have value and is something America does great. In Europe you never know if the food you're buying is going to be any good-- there are so many mom and pop restaurants there's no brand identity. In America, you know what you're getting from Chipotle, from McD, from any number of chains.

Downside-- variety.

---------- Post added at 04:54 AM ---------- Previous post was at 04:47 AM ----------

http://en.wikipedia.org/wiki/Electromagnetic_induction

http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/magfie.html

a tighter winding makes it easier to create a stronger magnetic field, and thus push more flux. You can send the same flux through a wider area, via a lower magnitude magnetic field, you're going to lose more of your available field magnitude to the air/81 sheets of paper/plastic on top of the charging pad/plastic on back of phone dielectric.

These equations can be modeled like simple electrical circuits, just replace voltage with B (magnetic) field, current with flux, and resistor with dielectric.

I'm simplifying here, but we'll say the charging coil on the base station is the voltage source (battery). The flux that propagates is limited by the dielectric it has to travel through-- air, back of phone, top of charging station. Each of these we model as a resistor. This is why when you pick the phone up 1" off the pad, it won't charge-- too much 'resistance'-- dielectric-- air to travel through. On the inside of the phone is the mating coil that gets inductively coupled to the charging coil on the base Qi charging station. You want to maximize the magnetic field that is being spent keeping that coil energized, and minimize the magnetic field that is wasted pushing through the dielectric on the way to the phone's Qi coil.
[Nexus 5 Accessories] hammad99:
just ordered Q5.... lets hope for the best
[Nexus 5 Accessories] thor1k:
edit: nevermind
[Nexus 5 Accessories] fedecape:
In case you guys are interested,

I bought this one http://pages.ebay.com/link/?nav=item.view&id=201138304773&alt=web

It's just $7 and it's been great so far. Temperature around 30-33C. I'm using a 2A wall charger
[Nexus 5 Accessories] earendilSK:
Qi Charger - Large Rectangle w/LEDs: keeps reconnecting when fully charged

Hi,

So I bought the charger described as "Qi Charger - Large Rectangle w/LEDs:"

It was already mentioned in previous posts, this charger keeps disconnecting and reconnecting the phone when fully charged.

Used with 2.1A charger.

https://www.youtube.com/watch?v=hjmJdK0BZXw

However mine does not have rubber feet, maybe different model shipped?
[Nexus 5 Accessories] vin4yak:
Hmm.. Ok.. So what do you want us to do about it??
[Nexus 5 Accessories] earendilSK:
I wanted to check and let the others know, maybe the model from that seller is different now.

Do you have by any chance link for the proper rubber feet charger on ebay? thor1k mentioned Docooler from Amazon but that one does not ship to Slovakia.
[Nexus 5 Accessories] vin4yak:
May be like the "Qi Charger – Q8" one, yours also got revised or just went out of stock. I had ordered the Rectangle Qi charger as well but it went out of stock and I got my refund few days ago.
[Nexus 5 Accessories] Royal King:
I ordered the Qi tilted charger and it's charging my phone at a very slow rate :( (500-600mAh) is that it?

I'm using Samsung 2A charger with ECOMOTO cable without any phone cover.
[Nexus 5 Accessories] thor1k:
this one is a crappy knockoff of (an) official Docooler one with rubber feet.

---------- Post added at 08:40 AM ---------- Previous post was at 08:37 AM ----------

position it better. get a current sensing app that updates every second to find optimal position.

Mine gets about 750mA with screen on

they really didn't think this Qi thing through very well.

---------- Post added at 08:42 AM ---------- Previous post was at 08:40 AM ----------

Hm, sorry.
[Nexus 5 Accessories] Royal King:
Tired all the positions! (no pun intended :P)
[Nexus 5 Accessories] vin4yak:
Lmao! [emoji23][emoji23][emoji48]

- Sent from an IceCold Hammerhead!
[Nexus 5 Accessories] pandaman21:
I just ordered the qi charger tilted and it taking 20 days for it to be delivered. Is that normal? Just a little impatient for them :/
[Nexus 5 Accessories] tkurkowski:
Do you have a recommendation for such an app? I looked in playstore and it wan't clear that there was a good one that works on a Samsung S5. (Yes I know this is a Nexus thread.)

TIA
[Nexus 5 Accessories] vin4yak:
Here you go:

https://play.google.com/store/apps/details?id=com.manor.currentwidget

:)
[Nexus 5 Accessories] tkurkowski:
Thank you!!! I'm doing Qi charging and am curious about how much slower it is than plug-in.
[Nexus 5 Accessories] jerry62:
Black Tilted Qi Charger - Terrible Results

After checking out this thread and other posts on the net that stated that the titled charger was decent, I obtained one on Amazon which took quite some time to arrive from overseas to the United States. No, not for Nexus, but I hadn't seen any previews specifically for my Phone & Case, so I took a chance.

However, this tilted charger (as pictured in the original post) has not performed well for me.

With my LG G3 & Quick Circle Wireless Charging Case, it takes 45 minutes just to increase the power 10%.

Nowhere near the 10% in 15 minutes as provided in the original testing scenario. Plugging in directly is more than 3 times faster.

Could the case be an issue? Not so sure, as I haven't tested it with other chargers yet. Adjusting the phone position on the charger has not provided any substantial change to the performance. Turns out to be a wasted purchase at this point... :(
[Nexus 5 Accessories] pandaman21:
Its probably the charger and cable that you are using. I think hr mentioned in the beginning that he had different USB cable and he was using a 1.8 amp charger I believe. What are you using to power it? Also you're using the g3 which has a bigger battery so it will take longer to complete the whole charging cycle. Also try to use it without the case on to see if the results change at all. One last thing, he is putting the phone in airplane mode which helps the phone charge faster so you can also try that.
[Nexus 5 Accessories] thor1k:
current widget, but I'm not crazy about it...it's better than nothing I think

---------- Post added at 04:26 PM ---------- Previous post was at 04:26 PM ----------

what he said

---------- Post added at 04:30 PM ---------- Previous post was at 04:26 PM ----------

10% is 300mAh/h in 45m would be 400mAh/hour. That's a bit slow, mine does 700 (screen on) to 1000mAh/h (screen off). Check the charging inductive coupling loop with current widget.

If you just use it when sleeping, that's better than nothing (it's still significantly less USB port wear)
[Nexus 5 Accessories] tkurkowski:
I wasn't too crazy about it either. I finally decided to use this one:

https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free

It's very simple - more of what I had in mind. So I used it to post this:

http://xdaforums.com/galaxy-s5/accessories/qi-versus-wired-charging-s5-results-t2848577

Thanks for your help!

Ted
[Nexus 5 Accessories] frigidazzi:
Does anyone know if it's safe to use these in the bathroom while taking a shower? I charge my phone with a cord while showering, so I assume it should be fine; but for some reason my brain is telling me this may not be a good idea. Any thoughts?
[Nexus 5 Accessories] ImolaDan:
Having your phone in a room full of steam for a prolonged period won't do it any favours. Leave it charging elsewhere.
[Nexus 5 Accessories] frigidazzi:
Well I was more referring to the wireless charging being a problem. I've been using my hones in the bathroom for about 7 years with no problems using a wall charger.
[Nexus 5 Accessories] ImolaDan:
Sorry, I didn't mean to come across a bit sharp :)

Phones are usually well engineered devices designed to put up with a certain amount of humidity - humid weather, being in a pocket all day, in a bathroom while someone takes a shower...

Cheap charging plates... probably not. :p

I have the rectangular one with LEDs on it, which has vents, meaning the internals are more "exposed to the elements". While the coil would be enamelled wire (otherwise, it would short on itself), the PCB will still have 'bare' soldered areas on it, plus the legs of ICs, etc, which may be bridged by moisture.

(has anyone opened one of these without destroying it?)
[Nexus 5 Accessories] frigidazzi:
I opened up one of the cheap white ones and took out the sound thing, but there was nothing to protect it inside.

The moisture in these cheap ones is what concerns me. Like you were saying above. The phones I feel safer with in shower rooms. Maybe I'm naive lol.
[Nexus 5 Accessories] reneftw:
No offense, man. Just being curious: why do you charge your phone while taking a shower? Why don't you charge it before/afterwards? How much does your shower take?
[Nexus 5 Accessories] frigidazzi:
Yes. I can do it before and after. I could use a cord instead of wireless charging too. It's just a curiosity. There are times when I'm in a hurry. I get home and only have time for a quick shower and sometimes it's the only time I'll get before I go out.
[Nexus 5 Accessories] bblzd:
That doesn't mean it has to be in the steamy washroom with you, though. Personally, I avoid getting my phone steamy or wet in general but it is your device to do as you wish of course.
[Nexus 5 Accessories] Dougshell:
Might seem like a silly question, but what would happen of someone used wireless charging while the device was plugged in?
[Nexus 5 Accessories] WisdomWolf:
Pretty sure it won't activate wireless charging if the device is plugged in. I couldn't get wireless charging to work with my micro USB drive connected last night.

---------- Post added at 02:27 PM ---------- Previous post was at 01:35 PM ----------

What do you guys think about this app for monitoring charge current?
[Nexus 5 Accessories] RokRovan:
Hey everyone,

I'm sorry if this was answered before. I tried using search but didn't find anything.

My question is: Is there a difference between wirelessly charging my N5 via PC USB port or using an AC power adapter? Will one take longer than the other?

Thanks!
[Nexus 5 Accessories] EPayne123:
Technically it SHOULD take longer all depending on the cable you are using that leads from outlet/port to charger. USB port doesnt ouput NEARLY as much power as an AC outlet and the output of the pad is basically based on the input TO the pad.
[Nexus 5 Accessories] WisdomWolf:
I'd venture a guess that some pads won't charge at all when connected to a USB port. That's what happens with the official nexus charger.
[Nexus 5 Accessories] reneftw:
I use a q8 version with blue led with a wireless receiver rated at 500mA (I don't own a nexus 5). The problem is that my values while charging are all over the place. I wonder, is that due to the charger or the receiver? Anyone else got very different values while charging with these cheap chargers?
[Nexus 5 Accessories] reneftw:
I think I'll first change the receiver with a bigger one. Then, if the current will fluctuate like it does now, I will also change the charger.

Till then, can these fluctuations damage my battery?
[Nexus 5 Accessories] jangofei:
What phones do you have?
[Nexus 5 Accessories] reneftw:
I have a xiaomi mi3.
[Nexus 5 Accessories] Dougshell:
For some reason I can't get the mah to show up in the battery monitor app.
[Nexus 5 Accessories] jonstrumpf:
Hello Guys!

So, i am looking for the last QI Charger presented in the OP ('Qi Charger - Large Rectangle w/LEDs'). Sadly the mentioned vendor doesn't ship to germany, so i had to do some research and found this offer:

http://www.ebay.com/itm/QI-Standard...131003132420&rk=1&rkt=6&sd=151237254268&rt=nc

Can anyone tell or at least assume, if this is an original/fake? Since there is also a bottom-side photo in the description of the charger, can anyone confirm if yours does look the same?

Help is highly appreciated! :)

Greetings!
[Nexus 5 Accessories] Link2811:
Hello !

I got a question :

Does all the QI charger can charge two or more devices ?

Because, I want a big charger (like 20x20cm for example) for charging 2 phones and a Moto 360.

But I can't find this...

Do you know a charger like this ? :)

Thank you !
[Nexus 5 Accessories] reneftw:
www.duracellpowermat.com/powermat/two-devices.html

Looks like this one can charge 2 or 3 devices in the same time.
[Nexus 5 Accessories] pkelly517:
Someone correct me if I'm wrong, but powermat isn't qi compatible.
[Nexus 5 Accessories] reneftw:
You are right. Powermat is another wireless charging type. I wasn't paying attention.

www.amazon.com/gp/aw/d/B00EK54ZXE?pc_redir=1409929568&robot_redir=1

This is one double qi wireless charger, but it only has 1 review that isn't too good.