What is Wireless Charging
Wireless charging provides an easier and more convenient means to charge a range of Consumer Electronic and Industrial devices, providing a reliable and low maintenance system for power transfer compared with traditional cable based contact methods. From smartphones and small electronic devices to mission critical equipment, wireless charging maintains safe, reliable transfer of power to ensure all forms of device and equipment are always charged and ready to go.
QI Wireless Charging Solution Transmitter Module
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How Does Wireless Charging Work?
Wireless charging is based on the principle of Inductive Charging or Magnetic Resonance – the process of transferring energy between two objects through coils. This sends energy from the charging base station (transmitter) to a coil in the target device (receiver) via a process called magnetic coupling. Specialized circuitry on the receiver converts energy received through the magnetic coupling into DC which can then be used to charge the battery.
NON-QI Wireless Charging Solution 5W Wireless Charger Circuit
QI Universal Wireless Power Receiver Pad
QI WIRELESS CHARGER Receiver FOR SAMSUNG GALAXY NOTE 3
Thanks, interesting thread!
interesting.. thanks for the mini guide
Related
Hi,
So I've built myself a solar powered battery pack for my awesome Tab. Running into a problem though:
I'm using a 3.7V 10.000 mAh lipo battery and a switching regulator to boost the voltage to 5.3V through USB. The regulator is rated at 3A and my batterypack can do a sustained 5A discharge.
I've also built into the female USB the little resistors to "let the Tab know" it's connected to something capable of delivering more than 500Ma USB is specced to deliver (this thread). Problem is even with the resistors i'm only getting about 500mA of charge, much lower than when connected to mains... I'm thinking i'm still not convincing the phone it can pull more current, either that or something is wrong with my booster setup.
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Anybody have any ideas??
Cheers
What sw regulator did u use??
What sw regulator did u use??
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Hi WarlockM,
It was this one: http://www.lightobject.com/DC-to-DC-power-module-step-up-Input-35V28V-Output-535V-Ideal-for-solar-panel-regulator-P498.aspx
I measured the current coming out of the battery whilst charging: 500-600mA... Figured something wasn't right so replaced the whole setup with an all-in-one solution from ebay: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220712755881&ssPageName=STRK:MEWAX:IT
This one really does a nice job, it charges the phone at 1.5A coming out of the battery so probably a little less going into the phone because of stepup (does require the resistors in USB though). It also smartcharges the lipo batterypack at 800mA straight from USB, or in my case solar panel aswell. What's more it indicates the charge level, so am pretty chuffed.
Will be posting pictures of finished product.
Cheers, Fred
Thinkgeek recently reviewed a replacement wall plug that can supply up to 2.1 amps over a USB port.
Seems like a perfect fit for where you charge your nook color!
http://www.thinkgeek.com/gadgets/travelpower/e81a/?pfm=Search&t=U-Socket USB Wallplug
In a similar vein, ThinkGeek also has this, which lets you draw USB power from an outlet that has something else plugged into it. Up to 1 amp.
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flu13 said:
In a similar vein, ThinkGeek also has this, which lets you draw USB power from an outlet that has something else plugged into it. Up to 1 amp.
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I'm wary of the 1 amp output, though that looks useful for when you're on the go or travelling.
The 2.1 amp permenant household solution means I can create a charging dock in my office with very little fuss.
http://fastmac.com/usocket.php
I got one of these for my birthday this January. Really works but I still think the NC charges faster directly from their dedicated wall plug.
Yes, I'm not sure why but some people get 2 amp usb chargers that charge their nook at the same time as the stock charger.
However, my experience has been not the case.
The cable itself is known to be important, but the charger also has something about it that's unique or made differently to allow full 2 amp charging.
There are usb inter-connects that people sell that allow charging from lower amp chargers, I'm wondering if this bypasses whatever check that keeps the nook from charging at 2amps on a nonstock charger.
Full disclosure, I was provided this charger in exchange for an honest review. I have tried many USB Type C car chargers since getting the Nexus 5X and 6P and this is one of the better ones. It provides two ports- one Type C and the other Type A- for charging devices both old and new. The Type A port offers 5v/3a max charging with their VoltIQ technology, so it will detect what the device is capable of charging at and deliver only that much. The Type C port offers Qualcomm Quick Charge 3.0 technology that can deliver 5-6.5V/3.0A, 6.5-9V/2.0A, 12V/1.5A max, again depending on your device's capabilities. The Nexus devices do not have the Quick Charge technology o it will charge at 5V/3A max, but the new LG G5 does. As far as I know this is the only device offering Quick Charge over Type C, and I have been unable to tell if it officially meets USB C standards as there is conflicting information out there. Benson Leung has alluded that it does not, but Qualcomm and LG are both on board and Tronsmart is a trusted brand so I feel safe using this device. In testing it produced a max of around 2800mAh using Ampere, so it did not try to deliver more than my Nexxi could handle. The size of this device is a bit larger than the Visnic, but this offers full charging speeds on both ports simultaneously so that is to be expected. The device isn't too large by any means. I like that the charger doesn't have a captive cable, and also offers 5V/3A over the A port. Overall this is a high quality device from Tronsmart that I have no problem recommending.
http://www.tronsmart.com/tronsmart-c2pte-type-c-dual-ports-car-charger
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A while back when I got the LG v10, Tronsmart reached out to me and asked if I’d review one of their wall chargers in exchange for an honest amazon review, I agreed, and the charger impressed me so much I bought some others, and now I have the 2 port QC 2.0, the one port QC 2.0, the one port QC 3.0, and the Titan 5 port QC 2.0.
I saw they posted a charging analysis on their site for the s7 and based on my tests, it’s pretty spot on, though I am not going to sit and watch my phone charge for an hour and a half.) One thing I can also say is that they power my aftermarket wireless charges as well, which the factory Samsung one does not.
Just figured I offer op some affordable suggestions for wall chargers even though the hype is on wireless w/ the s7. When I come home from work and need a quick boost before going out for the night, wireless isn’t fast enough.
I have the titan on my night stand and it powers my yootech wireless charger, my tablet, my bluetooth headphones, and my moto 360 sport charger,still leaving me one for toping off the s7 in a hurry. It's a beast.
Here is the Tronsmart analysis, and the pictures below will represent mine.
http://www.tronsmart.com/samsung-galaxy-s7-charging-analysis
My output pics
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hello, i would like to know what is the best Qi wireless charger for Mix2s is?.. i saw some forums here mentioning the original Xiaomi Qi charger is not that great, causing hiccups while charging,
xiaomi has a 10w and 20w variants.
it would be great if someone suggest me a good charger
thanks
MOHAMMED AMAN said:
hello, i would like to know what is the best Qi wireless charger for Mix2s is?.. i saw some forums here mentioning the original Xiaomi Qi charger is not that great, causing hiccups while charging,
xiaomi has a 10w and 20w variants.
it would be great if someone suggest me a good charger
thanks
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I'm using few of these:
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I'm sure You will find it on Your favorite online shop like e-buy, I have mine from aliexpress
It's best of all I tried, phone reports quick charge, magnets helps to place phone on charger. When phone runs google maps in car and with full brightness it charges very slowly but it's because of intensive usage.
I have about five of them, using not only in car. The only disadvantage is microusb port in charger, usb-c would be perfect.
I tested baseus, ikea and few other qi chargers. Cheap no name gets hot on charge or phone charges very slow on them. On few it's very hard to place phone :/
I'm using the original black xiaomi wireless charger no hiccups or any problems I recommend.