What is QI?

Qi (pronounced CHEE coming from the Chinese word meaning "natural energy") is an interface standard by the Wireless Power Consortium (WPC) for inductive electrical power. The Qi system comprises a power transmission pad and a compatible receiver in a portable device.

Mobile device manufacturers that are working with the standard include Asus, HTC, Huawei, LG Electronics, Motorola Mobility, Nokia, Samsung, BlackBerry and Sony. The Wireless Power Consortium was established in 2008, and is a cooperation of Asian, European, and American companies in various manufacturing industries. The consortium aims to create a global standard for inductive charging technology.

We at Charge-e offer solutions for devices which are Qi compatible, and adapt other devices to the standard with different accessories.

HOW DOES IT WORK?

It's very easy: you need a Charge-e charger transmitter connected to a power source (any USB connection will work normally, such as computer/laptop or wall mount adapter, etc.) and a receiver, a device that supports Qi charging standard or a device that includes a Charge-e adaptor to the Qi standard. Just place one on top of the other, center to center, and there it is, the device is charging.

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NEED A DEEPER EXPLANATION HOW IT WORKS?

Two planar coils to transfer power from the power transmitter to the power receiver. The distance between the two coils is typically 5mm. Communication is unidirectional from the power receiver to the power transmitter via backscatter modulation. In backscatter modulation, the power-receiver coil is loaded, changing the current draw at the power transmitter. These current changes are monitored and demodulated into the information required for the two devices to work together.

Devices that operate with the Qi standard rely on electromagnetic induction between planar coils. A Qi system consists of two types of devices – the Base Station, which is connected to a power source and provides inductive power, and Mobile Devices, which consume inductive power. The Base Station contains a power transmitter that comprises a transmitting coil that generates an oscillating magnetic field; the Mobile Device contains a power receiver holding a receiving coil. The magnetic field induces an alternating current in the receiving coil by Faraday's law of induction. Close spacing of the two coils, as well as shielding on their surfaces, ensure the inductive power transfer is efficient.

COMMON PROBLEMS & SOLUTIONS

Why is my device not charging?
1. Make sure that when you place your device against the wireless charger, the LED lights up permanently, if so:
2. For IPhone - make sure that the charging receiver is properly inserted into the power options connector.
For Samsung - make sure that the charging receiver at the back of your device connected properly and in the correct place.
3. Use a 5V/2A charger.
4. Use only with the cable supplied.

Why does the device warm up?
1. Make sure that your device is centered against the wireless charger.
2. Do not place any metal object between your device to the wireless charger (such as a magnet or a ring used to hold the device at the vehicle).
3. Use a 5V/2A charger.
4. Use only with the cable supplied.

Why is my device not charging on the car holder?
1. Make sure there is a light on the left side of the car holder indicating the holder is connected.
2. Put your device exacly in the center of the holder (see instructions in the video).
3. Make sure that when you place your device against the wireless charger, the LED changes color.
If yes:
4. For IPhone - make sure that the charging receiver is properly inserted into the power options connector.
For Samsung - make sure that the charging receiver at the back of your device connected properly and in the correct place.
If not:
5. Use a 5V/2A charger.
6. Use only with the cable supplied.

WHERE?

As the Qi standard gains popularity in the mainstream, it is expected that Qi Hotspots will begin to arise in places such as coffee shops, airports, sports arenas, etc.

There are already coffee shop chains and also furniture manufactures spreading the word everywhere.

See the latest news about it:

Samsung Galaxy S6 and Galaxy S6 edge Come Equipped with Qi Wireless Charging

New IKEA Collection Blends Style with Qi Wireless Charging Functionality

ONE CHARGER, ALL SOLUTIONS

QI Enabled Phones 2015


IPHONE
IPHONE 4/4S QI external
IPHONE 5S/5C QI external
IPHONE 6/6+ QI external
IPHONE SE QI QI external
IPHONE 7/7+ QI external
IPHONE 8/8+ QI integrated
IPHONE X QI integrated
Samsung
Samsung S6 QI integrated
Samsung S6 edge QI integrated
Samsung Galaxy Alpha QI external
Samsung Galaxy Note II QI external
Samsung Galaxy Note III QI external
Samsung Galaxy Note IV QI external
Samsung Galaxy S3 QI external
Samsung Galaxy S4 QI external
Samsung Galaxy S5 QI external
Samsung Galaxy S8/S8+ QI integrated
Samsung Galaxy S7/S7+/Edge QI integrated
Samsung Galaxy Note 8 QI integrated
Samsung Galaxy Note 7 QI integrated
Samsung Galaxy S6/S6 Edge/Edge + QI integrated
Samsung Galaxy Note 5 QI integrated

Sony
Sony Xperia Z3v QI integrated
Sony Xperia Z4v QI integrated
Sony Xperia Z3 QI external
Sony NSP 10 QI integrated
Blackberry
Blackberry Z30 QI integrated
Blackberry Classic QI integrated
HTC
HTC 8x QI integrated
HTC Droid DNA QI integrated
HTC Thunderbold QI integrated
HTC Incredible 2 QI external
HTC Rezound QI external
LG
LG Optimus G Pro QI integrated
LG G3 QI integrated
LG G4 QI external
LG G6 QI integrated
LG V30 QI integrated
Kyocera
Kyocera Hydro Elite QI integrated
Kyocera Urbano L01 QI integrated
Kyocera Urbano L03 QI integrated
Kyocera Torque QI integrated
Kyocera Torque G02 QI integrated

Nokia
Nokia Lumia 950 QI integrated
Nokia Lumia 950XL QI integrated
Nokia Lumia 950 dual sim QI integrated
Nokia Lumia 735 QI integrated
Nokia Lumia 830 QI integrated
Nokia Lumia 920 QI integrated
Nokia Lumia 928 QI integrated
Nokia Lumia 930 QI integrated
Nokia Lumia 1520 QI integrated
Nokia Lumia 720 QI external
Nokia Lumia 810 QI external
Nokia Lumia 820 QI external
Nokia Lumia 822 QI external
Nokia Lumia 925 QI external
Nokia Lumia 1020 QI external
Nokia Lumia Icon QI external
Vertu
Vertu Signature Touch QI integrated
Yotaphone
Yotaphone 2 QI integrated
Asus
Asus Padfone S QI integrated
CAT
Catphone S50 QI integrated
Motorola
Motorola Droid Max QI integrated
Motorola Droid Mini QI integrated
Motorola Droid Turbo QI integrated
Moto 360 QI integrated
Motorola Droid Bionic QI external
Motorola Droid X QI external
Motorola Droid 3 QI external
Motorola Droid 4 QI external
Google Nexus
Google Nexus 4 QI integrated
Google Nexus 5 QI integrated
Google Nexus 6 QI integrated
Google Nexus 7 QI integrated
MTT
M.T.T Master QI integrated
M.T.T Master 4G QI integrated
DEWALT
Dewalt MIL810G QI integrated
HP
Elite X3 QI integrated
SAYGUS
Saygus V Squared QI integrated
TECHDY
Techdy Basic Bear QI integrated