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

Very nice review as always HKJ.
Thank You!

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.

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.

THanks for that.

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

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!

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

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

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?

Yes, the quick charge function.

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.

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

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.

- Test of BlitzWolf 51W 4-port car charger

- Test of Blitzwolf 4 port QC2 car charger BW-C5

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

thanks.

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 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.

I looked for devices with Quick Charge , a Qualcomm proprietary technology, support at Fast Charging Technology | Quick Charge 5, 4.0, 3.0 | Qualcomm
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

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),

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.