Test/review of Orico 3-port Mobile Phone Charger WHC-3U

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HKJ's picture
Last seen: 4 days 12 hours ago
Joined: 05/24/2011 - 12:23
Posts: 7425
Location: Copenhagen, Denmark
Test/review of Orico 3-port Mobile Phone Charger WHC-3U

Orico 3-port Mobile Phone Charger WHC-3U
Official specifications:

  • Brand Name: Orico
  • Output Interface: USB
  • Max. Output Power: 15w
  • Quality Certification: RoHS
  • Quality Certification: ce
  • Model Number: WHC-3U
  • Applied Fast Charge Protocols: No Support
  • Power Source: USB
  • Input: 100-240V/0.3A
  • Type: Travel
  • Item: ORICO 3-port Mobile Phone Charger
  • Material: PC+ABS Fireproof
  • Input: AC 110-240V 50/60HZ 0.4A
  • USB Output: 5V2.4A*3, MAX15W
  • Protection: Over-heated/Over-current/Over-charging protection
  • Plug: EU Plug
  • Color: Black/White

I bought it from Aliexpress store Orico Official Store
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It arrived in a cardboard box with specifications.
The box included the charger and a instruction sheet.
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  • Power consumption when idle is 0.06 watt
  • USB outputs are coded as auto with Apple 2.4A, Samsung, DCP
  • Weight: 68g
  • Size: 88.4 × 58.3 × 27.3mm

The first output can deliver 3.7A
The same with another output.
And all outputs together is also 3.7A
At 120VAC it drops to 3.5A, this better than the rated 15 Watt
The charger can deliver 3A for one hour.
The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.
M1: 65.5°C, M2: 42.3°C, HS1: 65.8°C
HS1: 56.7°C
M1: 63.8°C, HS1: 69.0°C
HS1: 68.2°C
M1: 47.8°C, HS1: 64.7°C
At 0.5A the noise is 7mV rms and 339mVpp.
At 1A the noise is 10mV rms and 330mVpp.
At 2.5A the noise is 22mV rms and 362mVpp, generally the noise is low.
Tear down
As usually with this design I could mount the base in my vice and break the top off to open it.
On this side is the input fuse (F1: 2A), two mains smoothing capacitors (EC1 & EC2) with a inductor between (L1). The safety capacitor (CY1) is mounted close to the USB connectors. There is a large switching transistor (Q1). On the low volt side is also two smoothing capacitors (EC4 & EC5) with a inductor between. Both inductors are glued to a nearby capacitor to make it more stable if the charger is dropped.
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The mains switcher (U1) is a rather small chip. On the low volt side is the synchronous rectifier (U2: Marked OSC7710) and two auto coding chips (U3 & U4)
The distance between mains and low volt side is well above 6mm.
Testing with 2830 volt and 4242 volt between mains and low volt side, did not show any safety problems.
The charger is nicely designed with low noise, good safety and auto coding. Only problem is that is has 3 USB outputs, but not much more power than one output can use.
Index of all tested USB power supplies/chargers
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How does a usb charger work?

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

Last seen: 2 months 1 week ago
Joined: 11/09/2019 - 02:45
Posts: 25

hi HKJ,

Could you explain or make the same about the issue with high noise (rms/vpp) of a charger ? what is the impact of that issue ?

I saw a case you reviewed with rms/vpp = 67/949

you did not complain about the noise of that charger

BUT a case with rms/vpp = 48/520 , you mentioned :” The noise and temperature is a bit high” it means the value is not good.


why did not you complain for Aukey’s case instead of Tanggood ? If Im not wrong, the Aukey PA-U32 must be the worse one and should remark the noise issue for that review instead of nothing.