Test/Review of Anker 40W 5-port 71AN7105

EDC Gear for Flashlight Carriers USB Power Devices
1

Anker 40W 5-port 71AN7105



Official specifications:

  • Exclusive PowerIQ Technology: Detects your device to deliver its fastest possible charge speed up to 2.4 amps per port or 8 amps overall.
  • Family-Sized: An industry-leading 40 watts through five ports lets you charge any combination of phones, tablets or other USB-charged devices simultaneously.
  • Guaranteed Safety: UL certified design, industry grade materials and premium circuitry ensure superior performance and reliability. 100-240 volt input ideal for international travel.
  • What You Get: Anker® 40W 5-Port Desktop Charger, 5ft / 150cm detachable power cord, welcome guide, our fan-favorite 18-month warranty and friendly customer service.
  • 40W 5-Port Desktop Charger
  • Max speed charging for our multi-device world.
  • PowerIQ Detects your device. Delivers the fastest charge.


I got it from Amazon dealer AnkerDirect




I got this charger in a cardboard box.















Measurements

  • +5V is separate and ground is common.
  • Unloaded power consumption is 0.15 watt
  • Usb port coding is automatic selected (Up to Apple 2.5A).
  • It turns off when overloaded.







It looks like each port has individual overload protection (Very good), but it is a bit high at 3.2A.



Running all ports in parallel it turned the output off at 9A



The charger has no problem with a total load of 8A for one hour.
The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.



M1: 60,7°C, M2: 69,7°C, M3: 63,3°C, M4: 40,6°C, HS1: 74,9°C
HS1 is the D12 diode.



M1: 61,3°C, M2: 58,9°C, M3: 46,4°C, HS1: 65,0°C
HS1 is the heatsink for the mains switcher, M1 is one of the rectifier diodes.
Try comparing this photo to the top photo of the circuit board, it is very easy to see the parts.



M1: 55,7°C, M2: 62,8°C, M3: 47,9°C, HS1: 72,3°C
HS1 must be the heatsink for the rectifier diodes



M1: 58,8°C, M2: 60,4°C, M3: 51,7°C, M4: 39,7°C, HS1: 67,8°C
And here HS1 must be the D12 diode.



There is not much noise at 0,5A with 20mV rms and 220mVpp.



And even less when loaded with 2.5A with 15mV rms and 200mVpp.



The peak noise decreases with full load: 17mV rms and 120mVpp.



Tear down



I could break it open when holding it in a vice and using a hammer. As can be seen there is very little damage to it and it could be glued together again.



Some parts are hidden below the heatsink, but the main switcher transistor can be seen on the heatsink and on the other heatsink there is two rectifier diodes. There is also a safety capacitor and opto feedback.








What is very difficult to see is that there are two common mode coils in this power supply, both placed before the bridge rectifier. There is also a 3A fuse on the mains input.



U1 is the switcher controller. U2 is controlling the voltage feedback. U5-U9 is the auto usb coding chip.






The distance between low volt side and mains is enough.



Another version

This charger exist in multiple version with the same type number. A reader had one with two dead output that he gave me.
The left side is his and the right side the one I have tested.



Look for the F6 part, it is a fuse and it do not reset again when blown. As can be seen on the left version there is no fuse, but my test did show a protection?



Behind the usb connectors are some chips (U12, U13), they are some sort of over current protection IC.



They have the same type number, but the marking is different.


Testing with 2500 volt and 5000 volt between mains and low volt side, did not show any safety problems.



Conclusion

This charger looks very good with low noise, overload protection on each output and able to run at full current.



Notes

Read more about how I test USB power supplies/charger

2

Nice to see a good USB charger, for a change :slight_smile: Thanks for the review!

3

Thanks for the review, I was waiting for this one.

4

Thanks for he review!

Just to report something you might find interesting:

I bought this charger from Amazon before the price drop and it worked flawlessly for about 2 months, Then 3 of the USB ports started failing one after another… I contacted anker and they sent me a replacement without hesitation, just asked for the serial #. My second unit was going strong after 5 months until one USB port died.

This is indeed a very good charger and maintains full voltage and current even at high loads, but I think there were some issues with earlier versions, a new one has been released, called the anker powerport, the case is slightly different I wonder if they upgraded the internals?

5

Actually I have read lots of such reviews where ports die after a few months.

6

In the review I did also include a charger where the usb ports died and a explanation about it.

7

Thanks for the review! These HKJ reviews are really valuable to me. Chargers are one of those products where it is essential to know what is inside and how it performs.

8

Excellent, I was hoping that these were good products, thanks for confirming that HKJ.

9

Have this charger in black. Also have the 25W in white. Love them both.

Interesting: Had one port on the 40W “die” and contacted Anker support. Immediate response by email: “unplug it for 10 minutes and try again.” Tried it and VOILA! the port wasn’t dead. Bad cable tripped the circuit breaker? overload protection? Very impressed with Anker stuff. I have:

>-Anker® 40W 5-Port Family-Sized Desktop USB Charger
>-Anker® 2nd Gen Astro3 12000mAh Portable External Battery USB Charger (x2. AMAZING portable battery that charges FAST)
>-Anker® 25W 5-Port USB Family-Sized Desktop Charger
>-Anker® USB 3.0 2-Port Hub Bus-Powered Hub with a Built-in Extended 3.3ft USB 3.0 Cable
>-Anker® Premium Lightning to USB Cable with Ultra Compact Connector Head for iPhone, iPod and iPad (x 10)
>-Anker® Gaming Mouse Pad with Special-Textured Surface

10

Been contemplating about this charger for a while and finally able to click “Place Your Order” button. Thanks for the nudge.

11

@HKJ

Thanks for the review! Is this charger more or less the same as the BlitzWolf 40W charger?

12

Nearly the same. Anker has electronic overload protection on each output, BlitzWolf one only uses fuses.

13

Thats good to know. Thanks for your reviews HKJ, I feel very confident using chargers you tested first.

14

Thanks for the good review which is as expected from good quality Anker stuff.

15

Thanks for the review.
I have the same charger pictured on left.
All of the ports are working OK, using since December.

HKJ,
Are they different products or just only a few components different?
Can I trust this version.

16

What are the consequences of this fact? Is it better, safer,…?
The Anker costs almost twice as much as the BlitzWolf and I am wondering if it worth the extra $’s?

17

The problem with the fuses is that they are non replaceable, i.e. once you blow a fuse that usb output is dead.

This does not happen during normal usage, but a damaged usb cable can take out a fuse or more if you more it around.

I would rate the electronic overload protection a little bit safer, because it shuts down the output at a lower current.

The old Anker is about the same as the BlitzWolf.

18

I own both the 40 watt and 25 watt Anker's for about 5 months now. Both have been flawless. From what I've read, their customer service is second to none. Thankfully I haven't had to use their generous 18 month replacement policy.

19

Excellent review. Thanks for posting. It’s pleasing to see yet another very good 4 port USB charger on the market.

20

Lol, fancy meeting you here HJK.
I didn’t make the connection ’till I read this review :slight_smile:
You got that other version with the blow fuse from me.