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Anker 20W Dual-Port USB Wall Charger

Anker 20W Dual-Port USB Wall Charger

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Product Description

Travel-sized charging for two.

PowerIQ™: Detects your device. Delivers the fastest charge.

Exclusive to Anker, PowerIQ™ amp-adjustment technology intelligently identifies your device to deliver its fastest possible charge.

Most Powerful Dual-Port

A category-high 20 watts / 4 amps through two ports lets you charge two phones or even two tablets together at top speed.

UL Certified Safe

Built with industry grade materials and premium circuitry, this product meets the rigorous safety standards of Underwriters Laboratories.

Travel Light

Over 15% smaller than the previous version, this compact adapter has a foldable plug and fits comfortably into a small purse or pocket.

Customer Reviews

  • Best 2.4A wall charger in the world!
  • That's not a catch to get you to read. At half the price of an Apple charger or some name brand. And as good or better quality... I see no reason to buy anything else. So far I have 3 and will likely keep coming back for more. They run cool even charging two 8" tablets. I don't know too much about the IQ technoloy but just make sure whatever Anker charger you order has this on all ports. A couple of their larger chargers only have it on two with the rest of the ports being 1A each. The 2.4A charger charges as fast as anything I've owned and keeps tablets going even during video watching. I'd like to do a technical write-up on these. I will when I get around to it.
  • 2015-07-02

  • Great design and utility
  • Excellent product, works very reliably!
  • 2015-07-02

  • Keeps your gizmos ticking!
  • Nicely made, this high wattage adapter is perfect for keeping your gizmos humming. The folding prongs make sure it doesn't tear a hole in your bag. Too big for casual carrying in a pocket, though.
  • 2015-07-02

Joanna S
  • Five Stars
  • woks great
  • 2015-07-02

Big Mike
  • Definitely worth it
  • Works great and priced well. Thanks!
  • 2015-07-02
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Customer FAQ

Q1.  Which charging port should I use to charge my device?
Thanks to Power IQ technology, each charging port can charge any device at full speed - there's no need to
find a specific port.
Q2.  What kind of USB charging cables should I use with this charger?
To ensure complete safety and best performance, we strongly recommend using your device's original cable or a third-party certified cables (such as MFI).
Q3.  What if the Anker Dual-Port Wall Charger is not charging my device(s)?
A. Check to ensure that your device is USB-powered with an input current between 0 and 2.4 amps and a voltage input of 5V.
B. Use a different usb cable to double check. If the issue is our wall charger, please feel free to email us at to claim the 18 months warranty.
Q4.  What should I do if certain port/ports fail to work?
A. Please unplug the power cord from the back of the charger and any USB cables from the ports on the front.
B. After 15 minutes plug the power cord back in and try a different USB cable in the non-working port to see if the problem has been resolved.
C. Please email us at during your 18-month warranty if your device appears to be defective or you need further help.
Q5.  Why are my Samsung Galaxy S5, S4 and Note 3 devices charging slightly slower from this charger than the original charger that came with my device?
The heightened sensitivity of these devices to voltage input may in some cases slow their charging speed.
Q6.  My device charges at 1 Amp, will this charger’s 4 Amp output harm it?
No, the charger will only supply the maximum charge current allowed by your device up to 2.4 Amps from each port. That is to say, if you use a 2.4A charger with a device drawing 1A, it will only draw 1A.
Q7.   How do I check my device’s input current and voltage?
Please refer to your device’s user manual, original OEM charging adapter, or contact the manufacturer to determine this information
Q8.  When the charger is plugged into an outlet but has no devices plugged in, will it consume power? What is the standby power consumption?
The charger will consume almost no power in this state. Its standby power consumption is rated at <0.5W.
Q9.  Can I use this charger in other countries?
Yes, this charger is compatible with 100-240V. However, the plug is designed for the country it was originally shipped to. You may need to buy a universal Outlet Plug Adapter .

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Feel free to ask questions about this product here.
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Anker Customer Support and the Anker user community will do their best to quickly answer your question.



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Latest Post

IPad and iPhone charging

I have a iPad 3 and and iPhone 6.  Can I charge both at the same time?  What will the output of each port be?

Replies(2) Collapse Report as spam May 24, 2015 at 5:03 PM

The maximum output of this device is 4 watts shared between two ports, each device (tablet and phone) will draw what is needed to charge it, but no more than the stated 4 watts. So, yes, you can charge both your phone and tablet at the same time without any worry.

Reply Report as spam May 24, 2015 at 7:52 PM

Yes it can be charged at the same time at 2.4Amp 


Reply Report as spam May 25, 2015 at 12:05 AM
DISCOUNT On Neewegg buy this for 10.99

Click here ->

Replies(2) Collapse Report as spam May 8, 2015 at 10:46 AM

Anker states their policy is returns and exchange service is limited to all purchases made directly from Anker. If you purchased through a different retailer, please contact them directly. Not sure I would want to give up a great warranty to save a few cents.

Reply Report as spam May 8, 2015 at 11:21 AM

thanks for the info


Reply Report as spam May 8, 2015 at 9:06 PM
great charger

works perfect and great quality

Replies(3) Collapse Report as spam Feb 12, 2015 at 9:40 AM
We're glad to hear you're satisfied.
Reply Report as spam Feb 12, 2015 at 10:30 PM

Its design limits the use of an oversized plug on the other wall outlet. Anker ought to shift the plug design 90 degrees. I hate power plugs that take up more than half the face plate.

Reply Report as spam Feb 12, 2015 at 11:11 AM

Spot on gherardini, I could not agree more. The plug orientation basically makes the charger useless. 

Reply Report as spam Feb 12, 2015 at 12:16 PM

will I get 2.4 A at the a same time? if i using two device?

Replies(2) Collapse Report as spam Feb 11, 2015 at 1:04 PM

depends on the two devices and their respective max inputs. if the devices you plug in can take 2.4A each, then the charger will step down to 2A per slot.

Reply Report as spam Feb 11, 2015 at 1:30 PM
The max output is 4A, which is shared between the ports.

If you have 2 2.4A input devices plugged in then the charger will output 2A to each.
Reply Report as spam Feb 11, 2015 at 8:30 PM
Anker 2nd Gen Astro E3

is it suitable for charging Anker 2nd Gen Astro E3?


Replies(3) Collapse Report as spam Feb 10, 2015 at 2:15 PM

Yes will be perfect match

Reply Report as spam Feb 10, 2015 at 7:16 PM

Yes, I've used it! Works great!

Reply Report as spam Feb 10, 2015 at 7:30 PM
Absolutely, it'll charge the E3 at the fastest speed possible.
Reply Report as spam Feb 10, 2015 at 9:30 PM
Reqst list supported by Anker 20WdpUSBwc

Please send me a complete list of devices (tablets in particular) that are supported by Anker 20W Dual-Port USB Wall Charger.   Thanks.


Replies(4) Collapse Report as spam Feb 2, 2015 at 1:38 PM

Quote From ANKER Team: Yes the list will be very very long indeed lol.....

Reply Report as spam Feb 11, 2015 at 7:00 AM
A complete list of compatible products would be very, very long.

The known incompatible devices are listed on our Amazon listings though.
Reply Report as spam Feb 2, 2015 at 11:00 PM

Almost everything made, ever, that is chargeable by 5v USB. Save probably for orginal iPod line and LG G2s. Each port will max out at 2.4 A, 4A total, so if you're charging two devices, they will charge a wee bit slower than if you're charging one device at a time.

Reply Report as spam Feb 2, 2015 at 3:34 PM

Note that this is a tab at the top of this page named "My Device", maybe that will help find the right unit for the device you have.  Hope that helps.

Reply Report as spam Feb 2, 2015 at 7:21 PM
Anker 20W Dual-Port USB Wall Charger

Does the subject product work properly on the Lenovo tablet S8-50, model # S8-50 - 59426767?  Do your tech support people support Lenovo tablet S8-50?

Replies(1) Collapse Report as spam Feb 2, 2015 at 1:28 PM
Yes, it should work fine together.
Reply Report as spam Feb 2, 2015 at 10:30 PM
Compatible with the Asus ME301T tablet?
I just purchased this 2-port charger and connected it to my Asus MeMo ME301t tablet and although it says that it's charging, the battery life just keeps decreasing.  I tried both ports with the same result.  Just to make sure that the charger works, I connected it to my Samsung S4 phone (with the same USB cable) and it charged right up.  Please advise.  Thanks!
Replies(1) Collapse Report as spam Dec 18, 2014 at 10:03 AM
Unfortunately this device is not compatible with Asus tablets. We do mention this on our listing so sorry that you missed it.

Apologies if this is an inconvenience for you and do please contact our customer service guys at to discuss it further, they'll to all they can to help out.
Reply Report as spam Dec 24, 2014 at 9:30 PM
EU version
Hi, will a EU version be released in the future? If you are planning to do so, when will it be released?thank you
Replies(3) Collapse Report as spam Nov 15, 2014 at 12:54 PM
Anker doens't announce when they will release products in other countries, but keep your fingers crossed and it should come soon!
Reply Report as spam Nov 16, 2014 at 5:45 PM
We're working on development of the European version of this charger but we don't have any specific information in terms of release dates yet unfortunately.
Reply Report as spam Nov 16, 2014 at 8:30 PM
Thank you, for now to me it is enough to know that you are planning to do release it so I will not wait use uselessly
Reply Report as spam Nov 17, 2014 at 6:25 AM
Availability in Canada
Hi! will this device be available in Canada?
Replies(1) Collapse Report as spam Nov 12, 2014 at 1:51 PM
Yes, it will.

We don't have an exact release date yet but we're working as fast as we can to get it up to Canada.
Reply Report as spam Nov 12, 2014 at 9:00 PM
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