Test/review of BlitzWolf 30W QC3 4 port USB Charger BW-PL5

4 posts / 0 new
Last post
HKJ
HKJ's picture
Offline
Last seen: 11 hours 59 min ago
Joined: 05/24/2011 - 12:23
Posts: 7427
Location: Copenhagen, Denmark
Test/review of BlitzWolf 30W QC3 4 port USB Charger BW-PL5

BlitzWolf 30W QC3 4 port USB Charger BW-PL5
DSC_0780
Official specifications:


  • USB Port: Four Ports USB
  • Total Power: 30W (Max)
  • Input: AC 100-240V 50/60HZ 0.8A MAX
  • Output: QC3.0 Port DC 3.6-6.5V=3A/6.5-9V=2A/9-12V=1.5A
  • Spower: Port DC 5V=2.4A Each port (Total 12W)
  • Size: 61*61*30 mm
  • Net Weight: 126g

I got it from Banggood
DSC_0769
DSC_0770
I got it in a small cardboard box with a label describing the contents.
DSC_0771
It contained the charger and a instruction sheet.
DSC_0774 DSC_0777 DSC_0778
DSC_0775 DSC_0779
DSC_0776
Measurements


  • Power consumption when idle is 0.11 Watt
  • Regular USB outputs is coded as Apple 2.4A
  • Regular USB outputs are in parallel.
  • QC and regular USB are not connected.
  • There is a blue led between the regular USB outputs.
  • QC output is coded as Apple 2.4A, QC3 and Huawei-FCP
  • QC3 can go down to 4.4V, below it will reset.
  • Weight: 108g
  • Size: 96.5 × 61.0 × 30.0 mm

BlitzWolf%20BW-PL5%20%231%20230V%20load%20sweep
Output 1 can deliver a bit above 2.6A. There is some cable compensation (i.e. the output voltage will increase with load).
BlitzWolf%20BW-PL5%20%233%20230V%20load%20sweep
Output 3 can also deliver a bit above 2.6A
BlitzWolf%20BW-PL5%20230V%20load%20sweep
Using all 3 regular output is the same 2.6A
BlitzWolf%20BW-PL5%20120V%20load%20sweep
Output current is slightly less at 120VAC.
BlitzWolf%20BW-PL5%20QC5V%20230V%20load%20sweep
The QC output can deliver about 3.7A on 5V
BlitzWolf%20BW-PL5%20QC9V%20230V%20load%20sweep
This is down to 3.2A at 9V
BlitzWolf%20BW-PL5%20QC12V%20230V%20load%20sweep
And about 2.5A at 12V, all well above the rated specifications.
BlitzWolf%20BW-PL5%20QC12V%20120V%20load%20sweep
The maximum output current drops slightly at 120VAC, but is still well above specifications.
BlitzWolf%20BW-PL5%20230V%20load%20test
Running one hour with 5V 2.4A and 12V 1.5A worked fine.
The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.
Temp7165
M1: 52.9°C, M2: 56.5°C, HS1: 65.8°C
HS1 is the regular USB transformer.
Temp7166
M1: 54.1°C, HS1: 58.7°C
Temp7167
HS1: 57.5°C
Temp7168
M1: 66.1°C, M2: 64.1°C, HS1: 72.0°C
Temp7169
M1: 48.9°C, HS1: 70.9°C
10ohm
At 0.5A the noise is 7mV rms and 127mVpp.
5ohm
At 1A the noise is 9mV rms and 138mVpp.
2ohm
At 2.5A the noise is 10mV rms and 147mVpp.
10ohmQC9V
At 0.9A the noise is 26mV rms and 684mVpp.
10ohmQC12V
At 1.2A the noise is 31mV rms and 825mVpp.
Tear down
DSC_2311
I could not break this charger open, but had to cut a bit.
DSC_2293
The electronic did not leave the charger easily either, there was a lot of the white stuff to keep it in.
DSC_2294
DSC_2296 DSC_2297
DSC_2298 DSC_2299
DSC_2300
At the mains input is a fuse, followed by a common mode coil. there is two sets of mains smoothing capacitors each wit a inductor between them. These is also two safety capacitors, one for each transformer.
Between the USB connectors are some leds.
DSC_2302 DSC_2303
DSC_2304 DSC_2305
DSC_2295 DSC_2301
There is a production fault at the mains input, one of the wires are not soldered!
On this side is the bridge rectifier (BD1), there is two switcher IC’s, for the regular USB output a small one (U3: OB2502) and for QC a larger all in one (U1: SC1271K). On the low volt side is a synchronous rectifier (U7: OB2005) for USB and the all in one chip only needs a MOS transistor for (U8: MOSFET HYG072N10 100V 80A) synchronous rectification. For the regular usb is two auto coding chip, a single (U2: Marked 1202) and a dual (U4: Marked 1212). The QC3 has its own control chip (U10: FT41).
DSC_2315
DSC_2308
There is good safety distance between low volt side and mains.
Testing with 2830 volt and 4242 volt between mains and low volt side, did not show any safety problems.
Conclusion
The charger works fine, but there is no reason for 3 regular USB outputs, the charger only has power for one! The QC output has more than enough power.
Except for the production fault (Missing solder) the charger looks good.
Notes
Index of all tested USB power supplies/chargers
Read more about how I test USB power supplies/charger
How does a usb charger work?

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

djozz
djozz's picture
Online
Last seen: 7 min 21 sec ago
Joined: 09/07/2012 - 17:04
Posts: 17971
Location: Amsterdam

Thanks for the test! Actually I am using this one at home, works well enough and now I’m glad it is safe. Smile

hank
hank's picture
Offline
Last seen: 1 hour 19 min ago
Joined: 09/04/2011 - 21:52
Posts: 9584
Location: Berkeley, California
Quote:
There is a production fault at the mains input, one of the wires are not soldered!

What’s the worst thing that can happen due to that? If the charger is dropped can the unsoldered wire move and cause a problem?

HKJ
HKJ's picture
Offline
Last seen: 11 hours 59 min ago
Joined: 05/24/2011 - 12:23
Posts: 7427
Location: Copenhagen, Denmark
hank wrote:
Quote:
There is a production fault at the mains input, one of the wires are not soldered!

What’s the worst thing that can happen due to that? If the charger is dropped can the unsoldered wire move and cause a problem?

You asked for worst case, likelihood is very low:
It can fall out and short to the other wire, blowing your mains fuse.
If it just about touch, either in the hole or the other wire, stuff can get VERY hot.

More likely is it that the charger will fail early due to a bad connection between the wire and the rest of the charger.

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