Test/Review of BlitzWolf 51W 4-port car charger C2

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HKJ
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Test/Review of BlitzWolf 51W 4-port car charger C2
BlitzWolf 51W 4-port car charger C2

DSC_2373

Official specifications:
  • Model:BW-C1
  • Input: DC 12-18V Max.
  • Output: DC 3x2.4A/5V
  • Output QC: 5V/2A, 9V/2A, 12V/1.5A Max.
  • Power: 51 watt
  • Size: 47mm * 87mm * 26mm (1-8 x 3.4 x 1 in)

I got it from Banggood (Amazon)

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I got this charger in a fairly plain cardboard box.

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The box contained the charger and an instruction sheet.

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The small hole above the green usb connectors has a blue led behind it. The front part of the charger is aluminium.

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Measurements
  • Power consumption when idle is 0.2 watt at 12V and 0.4 watt at 24V
  • All normal usb outputs are in parallel.
  • No individual port overload protection.
  • Usb port coding is automatic selected (Up to Apple 2.5A).
  • QuickCharge port is coded as DCP, and will switch when voltage when connected device sends a QC request.


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Load%20sweep%2014.6V%20%231

The usb outputs works fine at both high and low battery voltage, but there is no individual overload protection.

Load%20sweep%2011.6VQC
Load%20sweep%2014.6VQC

QuickCharge is different, here is an overload protection at 2.5A.

Load%20sweep%2011.6VQC12V
Load%20sweep%2014.6VQC12V

With 12V QuickCharge the current limit is still 2.5A (The rating is only 1.5A). I was a bit slow to select 12V on the 14.6V trace.
I could not select 9V, probably my trigger is not precise enough in selection settings.

Load%20sweep%2011.6V
Load%20sweep%2014.6V

Using all 3 usb outputs at the same time I could get above 9A before it shuts down. It is not a permanent turn off, but will try to turn on at intervals.

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The charger needs a few mA for idle current.

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At full usb load the charger uses a bit above 3A from 12V and turns off around 7 volt.

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The output voltage is fairly stable with changing input voltage.

Voltage%20sweep%201.5AQC12V%20input%20current

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12V QuickCharge works down to about 11 volt, then the output drops out of QuickCharge mode. The jumping voltage is because I try to reengage QuickCharge.
As can be seen the QuickCharge voltage will not stay at 12V when the input voltage is low, this is as expected.

Load%20test%207.2A

Running a load test with all usb ports at full load and QuickCharge at 12V/1.5A for one hour is no problem.
The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.

Temp2637

M1: 47,4°C, M2: 43,3°C, HS1: 75,4°C

Temp2638

M1: 45,0°C, HS1: 74,6°C

Temp2639

M1: 55,5°C, HS1: 79,3°C

Temp2640

M1: 56,8°C, M2: 44,4°C, HS1: 79,3°C


10ohm

The noise is very low with 31mV rms and 131mVpp

5ohm

A bit more load decreases the noise 16mV rms and 74mVpp

0.6ohm

Running all outputs at full load do not give much noise: 29mV rms and 131mVpp

QC5V5ohm

Quick charge also has very low noise at 5 volt: 10mV rms and 61mVpp

QC12V5ohm

And at 12 volt: 4mV rms and 51mVpp



Tear down

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I tried to break this open, this did not work and I cut it open instead. When open I could see that the correct way to open it is to pull the aluminium head off, remove two screws and pull the electronic out.

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Containing both a quick charge port and normal usb ports is must contain two voltage converts (Each QC port need their own converter). On this side of the circuit board there are two inductors for the converters.

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On this side the two converter chips are placed: The large GSTek GS92A5 for normal usb and uP9602P/PGM58Y to handle the quick charge.

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Connection from one circuit board to the other is made directly between the circuit boards.

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U1 and U2 is handling the automatic coding for the 3 usb ports.

Beeing a 12V device there is no need to test with high voltages.



Conclusion

This is a car charger with four high power usb ports that will charger just about any usb device as fast as possible. With one port supporting QuickCharge it can charge some pads and phones extra fast. The only negative detail is that all ports are in parallel without any individual protection.

I will call it a good charger (If each output had been limited to about 3A I would have called it very good).



Notes

The usb power supply was supplied by Banggood for a review.

Index of all tested USB power supplies/chargers
Read more about how I test USB power supplies/charger

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

Edited by: HKJ on 11/30/2015 - 13:54
Kozy
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Very nice review as always HKJ.
Thank You!

Woody
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Thanks for the very interesting review. I have one of these, and was slightly worried about charging 4 usb devices at once (though it is unlikely that that will actually happen – just a couple of phones, probably). Will a car 12v output actually handle 51W?

It looks like a well built product.

HKJ
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Woody wrote:
Will a car 12v output actually handle 51W?

I do not know what fuse rating are usual used in a car, but 51 watt is only about 4A, I would not expect that to be a problem.

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

Woody
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HKJ wrote:

Woody wrote:
Will a car 12v output actually handle 51W?

I do not know what fuse rating are usual used in a car, but 51 watt is only about 4A, I would not expect that to be nay problem.

THanks for that.

mattheww
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Cigarette lighter outlets usually are protected by a 15 amp fuse.

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Thankyou for sharing this one, I think car chargers vary a fair bit, I have a few and some of the cheaper ones pump out some nasty audible high pitched noises and some seem to affect digital radio in weak signal areas!

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Thanks for review, HKJ, good to see that its a worthy car charger!

hank
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http://budgetlightforum.com/node/42156

BlitzWolf 48W 4-port smart car charger C1
which is: all plastic; slightly lower wattage
Anything significantly different other than that?

Werner
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Thanks for the review.

What did you mean with the “slow trigger” thing?
How do you test the quickcharge feature? Do you simply connect the datalines to the specific voltages or do you use some high tech equipment for that?

Can I simply hook 12V to a quickcharge device and it will charge?

HKJ
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hank wrote:
http://budgetlightforum.com/node/42156 BlitzWolf 48W 4-port smart car charger C1 which is: all plastic; slightly lower wattage Anything significantly different other than that?

Yes, the quick charge function.

Werner wrote:
Thanks for the review. What did you mean with the "slow trigger" thing? How do you test the quickcharge feature? Do you simply connect the datalines to the specific voltages or do you use some high tech equipment for that? Can I simply hook 12V to a quickcharge device and it will charge?

Quick charge requires a special encoding on the data lines, a fixed voltage is not enough, you need to sequence it.

I have made a box with a Arduino that can do that, when I press a button it will change from 5V to 9/12/20V QC encoding.

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

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Awesome!!! I have a 3 port model similar to this…but a 4 port w/ automatic charge signature AND recommended by you!

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Hi HKJ, will you be testing the more compact Blitzwolf 2port car chargers? The BlitzWolf® BW-C7 looks especially interesting with it’s usb type c port.

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xephon wrote:
Hi HKJ, will you be testing the more compact Blitzwolf 2port car chargers? The BlitzWolf® BW-C7 looks especially interesting with it's usb type c port.

I cannot do anything with Type-C ports at the current time, it as 24 connections and even the cable must have a chip to work.

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

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xosevp wrote:
- http://lygte-info.dk/review/USBpower%20BlitzWolf%2051W%204-port%20car%20...
- http://lygte-info.dk/review/USBpower%20Blitzwolf%204%20port%20QC2%20car%...
- http://lygte-info.dk/review/USBpower%20BlitzWolf%2048W%204-port%20smart%...

Which one with 4-ports is best ? C1 C2 or C5 ?

I do not like the C2 as much as the other, The aluminium is clumsy to look at and it has lower efficiency.
With the two other it is a question about QuickCharge or not, I would probably select QC, because it is nice to have and many new high end Android phones can use it.

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

will34
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I Ordered the tronsmart branded version of this charger, hopefully will have the same internals.

HKJ
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will34 wrote:
I Ordered the tronsmart branded version of this charger, hopefully will have the same internals.

I do have the Tronsmart QC version in queue. I.e. you will be able to see the internals when I publish the review.

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

xosevp
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HKJ wrote:
xosevp wrote:
- http://lygte-info.dk/review/USBpower%20BlitzWolf%2051W%204-port%20car%20...
- http://lygte-info.dk/review/USBpower%20Blitzwolf%204%20port%20QC2%20car%...
- http://lygte-info.dk/review/USBpower%20BlitzWolf%2048W%204-port%20smart%...

Which one with 4-ports is best ? C1 C2 or C5 ?

I do not like the C2 as much as the other, The aluminium is clumsy to look at and it has lower efficiency.
With the two other it is a question about QuickCharge or not, I would probably select QC, because it is nice to have and many new high end Android phones can use it.

I looked for devices with Quick Charge , a Qualcomm proprietary technology, support at https://www.qualcomm.com/products/snapdragon/quick-charge
and the list is very short for QC 2.0 and ridiculous for QC 3.0 .

Anyway, thank you for the advice.

PD: For reference, here it is http://www.qualcomm.com/media/documents/files/quick-charge-device-list.pdf

HKJ
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xosevp wrote:
PD: For reference, here it is http://www.qualcomm.com/media/documents/files/quick-charge-device-list.pdf

When you look at the PDF there are many QC2 devices (probably because it is part of the snapdragon processors), but do not expect it in cheap phones (I assume that there is a payment to Qualcomm for supporting QuickCharge),

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

will34
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xosevp wrote:
I looked for devices with Quick Charge , a Qualcomm proprietary technology, support at https://www.qualcomm.com/products/snapdragon/quick-charge and the list is very short for QC 2.0 and ridiculous for QC 3.0 .

Actually there are many other devices supporting QC2.0 but are not mentioned in that list, for example the Samsung S6, it uses “Samsung’s proprietary fast charge technology” but can also work with QC 9V, and also the sony xperia Z3, there is very little mention of QC support but again it can be charged at 9V.

There are also other devices with “unofficial” QC support like the xiaomi and other powerbanks.

QC3.0 support is limited because it was just announced a couple months ago, it will be supported by the upcoming devices like the Samsung S7 and LG G5.

Main difference between QC2.0 and 3.0 is that the newest protocol will allow phone and charger to communicate and in lower battery levels the charger will send more amps but at lower voltage, some sort of direct connection between the charger and the battery bypassing the phone internal DC converter thus increasing efficiency during the CC phase. It also works in increments of 200mV between 3.5-20V, instead of fixed voltage ranges of 5/9/12V.