Question 1

The description shows the silver charger comes with qc2.0 adapter and the black charger comes with qc3.0 adapter. what's the difference?

Accepted Answer

Qualcomm boasts a fourfold increase in charging times over conventional chargers with Quick Charge 3.0, up from the 40 percent speed increase offered by its first generation technology. However, one of the interesting things to note is that Qualcomm isn’t touting massive increases in charging times over version 2.0, instead the company is focusing on improved efficiency this time around.

The major new feature with 3.0 is INOV (Intelligent Negotiation for Optimum Voltage), which allows for a fined tuned power output and a more optimized charging cycle. Firstly, different batteries require different charging voltages. Version 2.0 supported four modes at varying power levels, 5 volts/2amps, 9V/2A, 12V/1.67A, and a 20 volt option. Quick Charge 3.0’s INOV communicates with the device to request any voltage between 3.2V and 20V at 200mV increments, allowing for a wider selection of voltages. (  disclaimer: I don't own this material, used for education purposes only )

Question 2

What's the difference between this and the other Nanami fast charging stands that's a little cheaper?

Accepted Answer

First off  have same question and all the answers u received are INCORRECT - both "models" you speak of come 2 ways and in 2 different colors for each way. 
Black Model# ACM220B - 3 piece package (M220 stand, USB cable, QC3.0 FAST CHARGING ADAPTER) cost $25.99 - This one has an angular shaped stand - I believe it is an earlier model based on the detailed description.
Black Model#  ACA800 - 3 piece package (A800 stand, USB cable, QC3.0 FAST CHARGING ADAPTER) cost $24.99 . This model has a more rounded shaped stand, doesn't have the sharp angles of the other model that is exactly the same in every other way functionally also in the title they use the word "UPGRADED" for the A800 Stand if you buy just the stand w/o USB cable & Adapter.
Black - Fast Wireless Charging Stand M220 - with USB Cable only - $18.99
Black - Fast Wireless Charging Stand A800 - with USB Cable only - $16.99
Again, Both come with the stand - M220 - Angular, A800 smooth curved, USB cable & Instructions, no A/C adapter. And the details say that the AC800 is the new and improved version supporting some additional phone models listed - read it. IMO Buy the one u thing is better looking or if u have a specific model (not iPhone or Samsung some other brands mentioned) that new one may support that older one doesn't - remember that "new & old" in this industry could mean a difference of 6 months to a year. Both models come in 1 other color - The M220 also comes in Elegant Silver for $2.00 more in the stand & cable package and only $1.00 more in the 3 piece package with the QC 3.0 adapter - (look at the picture - the description for the Silver Adapter says 5V/2.0A which may be the spec for 3.0 adapter but picture clearly shows same adapter as the black model with QC 3.0 stamped on it). The A800 comes in White for $3.00 more for just stand & cord package only $1.00 more for 3 piece package including the QC 3.0.

Note: As of 12/14/21 - both Editions have coupons- between 5% & 6% depending on 2 or 3 piece package and/or color- Black, White or Silver.

Question 3

Does this fast charge a Samsung galaxy s7 smartphone?  Thank you for your time.

Accepted Answer

I don't have a Samsung Galaxy s7, but for s6 edge work just fine .

Question 4

Foldable adapter?

Accepted Answer

not foldable.

it charges fast though..

Material	Plastic
Color	Classic Black
Energy Specifications Met	Qi
Item Weight	252 Grams
Unit Count	1 Count
Number of Items	1
Output Voltage	5 Volts
Power Source	Corded Electric
Current Rating	2 Amps
Main Power Connector Type	2 Pin
Portable	No
Number of Power Levels	1
Input Voltage	5 Volts
Mount Type	Wall Mount
Amperage	2 Amps
Total Usb Ports	1
Wattage	7.5 watts
Connectivity Technology	Usb,Wireless
Connector Type Used on Cable	USB Type C
Compatible Devices	iPhone 16/16 Plus/16 Pro/16 Pro Max/iPhone 15/15 Pro Max/iPhone 14/14 Pro Max/iPhone 13/13 Mini/13 Pro Max/iPhone 12/12 Mini/12 Pro Max/IPhone X/ iPhone XS/ iPhone XS Max /iPhone XR /iPhone 8 Plus/ iPhone 8/Samsung Galaxy S24/S24+/S24 Ultra/S23/S23+/S23 Ultra/S22/S22+/S22 Ultra/S21/S21+/S21 Ultra/S20/S20+/S20 Ultra/Note 20/20 Ultra/S10/S10 Plus/S10E/ Note10/10 Plus/S9/S9 Plus/Note9/Samsung Galaxy S8/S8 Plus/Note8/Galaxy S7 Edge/Galaxy S7/Galaxy S6 Edge plus/Galaxy Note 5/Google Pixel 3/3 XL/Nexus7/6/5/4/Microsoft Lumia 950/Lumia 950 Dual Slim/Lumia 950 XL/Lumia 950 XL Dual Slim/KDDI TORQUE G03/TORQUE G02/HUAWEI PORSCHE Mate RS/MI/MIX 2S/Nokia 8 Sirocco/ SONY Xperia XZ2/ ZTE T85/ Moto Droid Maxx/Droid Mini/MOTO Droid turbo/Lucid 2 / Lucid 3 / Optimus F5 / Optimus G Pro / Optimus it L-05E / Spectrum 2 / Vu 2 / Vu 3 / V30 / V30 Plus
Compatible Phone Models	iPhone 16/16 Plus/16 Pro/16 Pro Max/iPhone 15/15 Pro/15 Pro Max/iPhone 14/14 Pro/14 Pro Max/iPhone 13/13 Mini/13 Pro/13 Pro Max/iPhone 12/12 Mini/12 Pro Max/iPhone 11/iPhone 11 Pro/iPhone 11 Pro Max/iPhone X/ iPhone XS/ iPhone XS Max /iPhone XR /iPhone 8 Plus/ iPhone 8/Samsung Galaxy S24/S24+/S24 Ultra/S23/S23+/S23 Ultra/S22/S22+/S22 Ultra/S21/S21+/S21 Ultra/S20/S20+/S20 Ultra/Note 20/20 Ultra/Note 10/10 Plus/S10/S10 Plus/S10E/S9/S9 Plus/Note 9/Samsung Galaxy S8/S8 Plus/Note 8/Galaxy S7 Edge/Galaxy S7/Galaxy S6 Edge plus/Galaxy Note 5/Google Pixel 3/3 XL/Nexus7/6/5/4/Microsoft Lumia 950/Lumia 950 Dual Slim/Lumia 950 XL/Lumia 950 XL Dual Slim/KDDI TORQUE G03/TORQUE G02/HUAWEI PORSCHE Mate RS/MI/MIX 2S/Nokia 8 Sirocco/ SONY Xperia XZ2/ ZTE T85/ Moto Droid Maxx/Droid Mini/MOTO Droid turbo/Lucid 2 / Lucid 3 / Optimus F5 / Optimus G Pro / Optimus it L-05E / Spectrum 2 / Vu 2 / Vu 3 / V30 / V30 Plus
Additional Features	Wireless charging, fast charger, charger stand

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NANAMIFast Wireless Charger with USB Phone Charger, Qi Certified Charging Stand with 20W PD Adapter for iPhone 16/16 Plus/16 Pro/16 Pro Max/15/14/13/12,10W for Samsung Galaxy S25/S24/S23/S22/S21

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