A box with mains in on one side and 5 usb output on the other side.
Measurements
All outputs are in parallel, but with fuses on each output.
Idle power 0.17 watt at 230VAC
Idle power 0.1 watt at 120VAC
All USB outputs is coded for Apple 2.1A, but uses a chip to automatic switch coding.
Output voltage is stable and the efficiency is around 80%, all the usb outputs looks the same.
Running all outputs in parallel I can test the full current of the power supply, without to much loss in the cables.
It looks very nice, except for no overload protection. There might be one at a higher current, but if not, I would have destroyed it with the test.
In the tear down it can be seen that there is a small fuse for each output, but it does obvious not trigger at the currents I used for testing.
120VAC does also works fine.
One hour with 8A load is not a problem.
The temperature photos below are taken between 30 minutes and 60 minutes into the 1 hour test.
M1: 54,3°C, M2: 52,5°C, M3: 57,6°C, M4: 62,2°C, HS1: 68,8°C
When comparing this with the tear down it is easy to see that the hottest part is the output rectifiers that is mounted on a heatsink.
The two other warm parts are the trafo and the input heat sink with the main switcher transistor.
M1: 55,5°C, M2: 58,7°C, HS1: 67,3°C
HS1: 58,6°C
HS1: 62,0°C
There is not much noise, 15mV rms and 106mVpp. at 0.5A.
At full power (8A) the noise will only increase a little 16mV rms and 164mVpp.
Tear down
There was no easy way to open the box, I had to break it open and it was a bit difficult (This is good).
It looks well designed with fuse and filter on the mains input, a 105°C capacitor and heatsinks.
There is some interesting details on the circuit board:
Each usb output has a small chip, probably to automatic select the best coding of the port.
The white part marked T1 is a fuse.
Notice the black paper between the trafo and the heat sink, it is used to improve isolation.
The isolation distance is good in this power supply.
Testing the mains input with 2500 volt and 5000 volt between mains and low volt side, did not show any safety problems.
Conclusion
This power supply/charger looks very good, it has lots of power, good isolation between mains and low volt side, stable output voltage with low noise and can charge just about anything.
Notes
The power supply was supplied by Eachine for review.
Thanks for this HKJ - I love these reviews, especially when you destroy them in the tear down at the end. Impressive that it can handle 8A in total, though I think I’ll stick to my Ioncell one that you reviewed some time ago - it’s good enough for my needs.
I ordered one from Amazon based on HKJ’s review. (Thanks!) It arrived in four days without premium shipping. It does appear to be identical to the unit pictured in kaiser’s post.
I use it to run my “XTAR VC2” Li-ion charger, which uses USB power and was previously connected to my Apple iPad power supply. The other ports are handy for charging tablets and phones using short USB to Lightning connectors available on eBay.
That’s interesting: The name on the circuit board pictured is “vinsic”. I’ve bought 2 identical looking units with this brand name (vinsic) some time ago at Amazon.de. The Model No. is VSCW502 and the specs are almost identical to the one above. (smart outputs, 8A…) Nice to know that these prob. will be of the same quality tested and approved as the Eachine above. Compared to other similar multi-output devices I’ve tested (Anker 40W, Tecknet 50W) the Vinsic has a little low output voltage acc. to my measurements (with charger monitors). With 1A load still at 5.02V it drops to 4.92V at 1.8A load. The voltage level of the other brands is a bit higher which can be a good thing in order to gain the max charging rates with USB units.
— the label in the BangGood picture says Manufactured by “Shenzhen Shebel Science and Technology co.LTD”
(note lower case and no space in “co.LTD”)
— the label pictured in the review here (first post) differs in that last bit
(having a comma after the period: “co.,LTD”
Trivial difference, but that’s what we look for to identify fake battery wrappers, so I have to ask.
Same long model number in the two pictures: ZQW121123050805
and ’oogle finds upwards of 600 hits for that, several different brand names on what’s presumably (one hopes) the same thing.
Just concerned that it’s possible to get the same board with parts left off to save money, as observed on seemingly identical hardware of other sorts.
Who ya gonna trust? Nobody, without verifying.
’oogling finds a variety of variations, for example:
Note the various differences in the output power label too.
and ’oogle on the model number (above) finds an Amazon model listing a different manuufacturer
“directed by FLOUREON manufactured by Zhengbai”
At least the Model number and manufacturer as well as the rest of the inscription on the side of the box looks identical. It seems like one OEM manufacturer (Shenzen Shebel Science…) sells his products under various brand names, maybe for different markets / world regions.
/DSC_8682.jpg)
/DSC_8680.jpg)
/DSC_8681.jpg)
/DSC_8683.jpg)
/DSC_8685.jpg)
/DSC_8684.jpg)
/DSC_8686.jpg)
/DSC_8687.jpg)
/Eachine%20PA40W%20%231%20load%20sweep.png)
/Eachine%20PA40W%20%233%20load%20sweep.png)
/Eachine%20PA40W%20%235%20load%20sweep.png)
/Eachine%20PA40W%20load%20sweep.png)
/Eachine%20PA40W%20120VAC%20load%20sweep.png)
/Eachine%20PA40W%20load%20test.png)
/Temp1616.png)
/Temp1617.png)
/Temp1618.png)
/Temp1619.png)
/10ohm.png)
/0.6ohm.png)
/DSC_8871.jpg)
/DSC_8872a.jpg)
/DSC_8873a.jpg)
/DSC_8874a.jpg)
/DSC_8875a.jpg)
/DSC_8876a.jpg)
/DSC_8877a.jpg)
/DSC_8878a.jpg)
/DSC_8879.jpg)
Impressive that it can handle 8A in total, though I think I’ll stick to my Ioncell one that you reviewed some time ago - it’s good enough for my needs.
