Test/Review index of all tested usb chargers, any comments?

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sacra
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Hi HKJ. Seems more and more surge suppressor power strips on the market are featuring built-in USB charging ports. Have you considered disassembling and reviewing some of these? I’m curious how they compare to dedicated charger units.

HKJ
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sacra wrote:
Hi HKJ. Seems more and more surge suppressor power strips on the market are featuring built-in USB charging ports. Have you considered disassembling and reviewing some of these? I'm curious how they compare to dedicated charger units.

Only one and it is not a surge suppressor, where I have received some requests:

I expect to publish the review later today.

If you want me to review some other, please post some links to where I can get them (Remember: I live in Europe).

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

xosevp
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It looks like BlitzWolf_40W_5_port_usb_charger and Eachine_PA40W_5_channel_usb_power_charger share the same board. But Eachine is using a much better quality 2014 rev., and BlitzWolf_40W_5_port_usb_charger a 2013 rev.

http://lygte-info.dk/pic/USB%20PS/28%20BlitzWolf%2040W%205%20port%20usb%...
http://lygte-info.dk/pic/Eachine/USB%20power%20supply%20%28PA40W%29/DSC_...

http://lygte-info.dk/pic/USB%20PS/28%20BlitzWolf%2040W%205%20port%20usb%...
http://lygte-info.dk/pic/Eachine/USB%20power%20supply%20%28PA40W%29/DSC_...

HKJ
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xosevp wrote:
It looks like BlitzWolf_40W_5_port_usb_charger and Eachine_PA40W_5_channel_usb_power_charger share the same board. But Eachine is using a much better quality 2014 rev., and BlitzWolf_40W_5_port_usb_charger a 2013 rev.

I am not sure there is much quality difference between the boards.
Many 5 port usb chargers uses revisions of this board, some of them better than other (Anker has electronic overload protection, not a fuse).

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

xosevp
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My favorites, in a image. Sorry.
I am unable to format the text correctly in the forum.

NOTE:
- Anker devices have electronic overload protection (best), not a fuse (worse) as others.(HKJ)
- Eachine only supports Apple 2.1A

HKJ, thank you for the reviews.

cj0
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Hi HJK,

Thanks for all the USB mains adapter testing and the details how the 2.5 and 5kV test are done using the Uni-T 513: test time usually less then 30 seconds and your quote:

Quote:
The display do not necessary show if there is a problem, but the sound of sparks will reveal it.

Regarding the category of smaller green ticks (possibly safe, haven’t read the CE test report): Have you ever tried a distributor/manufacturer to ask for their CE test report?

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cj0 wrote:
Regarding the category of smaller green ticks (possibly safe, haven’t read the CE test report): Have you ever tried a distributor/manufacturer to ask for their CE test report?

Sometimes

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

xephon
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HKJ wrote:

Ormbett wrote:
BG have a few “New arrivals” with the brand Ldnio. They are all descibed as “Safe and easy to use and carry” Any plan to test any of these?

All of them are on the way.

 

Some usb chargers do get hot, I have just tested a multiport one that got above 100°C on the plastic.


My guess is because those do not use synchronous rectification but rely on the cheaper diode bridge?
HKJ
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xephon wrote:
My guess is because those do not use synchronous rectification but rely on the cheaper diode bridge?

That is one reason for getting hot, another reason is when the transformer is a bit too small.

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

hank
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http://alterslash.org/#article-9948219

Investigators have warned consumers they face potentially fatal risks after 99% of fake Apple chargers failed a basic safety test. From a report on BBC:
Trading Standards, which commissioned the checks, said counterfeit electrical goods bought online were an “unknown entity.” Of 400 counterfeit chargers, only three were found to have enough insulation to protect against electric shocks. It comes as Apple has complained of a “flood” of fakes being sold on Amazon. Apple revealed in October that it was suing a third-party vendor, which it said was putting customers “at risk” by selling power adapters masquerading as those sold by the Californian tech firm.
http://www.bbc.com/news/technology-38167551

From the comments:

Quote:

Apple’s warning is true..Danger lurks here..
By bobbied • 2016-Dec-2 14:32

I purchased a couple of those white boxy chargers on E-bay and found that if I plug in the thing the wrong way, I get the full line voltage on the case of my apple phone. Those things could have killed somebody! Seriously, they are more than just a little dangerous. I could have died just holding my phone in bare feet while charging.

Once I realized the issue, ALL of them went into the trash and although I’m $10 poorer, I learned a valuable lesson. Don’t buy stuff like this from E-Bay….

bulrush
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I like your table but maybe you can be more specific about the risk.
What is the risk of the person getting a mains shock?
What is the risk of destroying your device being charged?

HKJ
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bulrush wrote:
I like your table but maybe you can be more specific about the risk. What is the risk of the person getting a mains shock? What is the risk of destroying your device being charged?

The risk is for persons, not equipment. The reviews are a bit more specific, the reasons are usual a one or more of:
1) Fail of high volt test, I test at two different levels.
2) Non-safety capacitor used
3) Isolation distance too low.

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

bulrush
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@HKJ: are you referring to the isolation distance being too low when the power is still high AC, before it’s converted to 5vdc? I’m still learning, and I’ve seen cuts in circuit boards in high voltage areas to isolate components.

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bulrush wrote:
@HKJ: are you referring to the isolation distance being too low when the power is still high AC, before it’s converted to 5vdc? I’m still learning, and I’ve seen cuts in circuit boards in high voltage areas to isolate components.

No, between the mains voltage and the low voltage (There are some legal requirements).
The distance between mains voltage parts can be fairly low without any trouble.

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

hank
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Quote:
Many 5 port usb chargers uses revisions of this board, some of them better than other

It would be useful to list all the 5-port boxes that include some version of this board, and cautions about which are better.

HKJ
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hank wrote:
Quote:
Many 5 port usb chargers uses revisions of this board, some of them better than other

It would be useful to list all the 5-port boxes that include some version of this board, and cautions about which are better.

Check the tear-down photos of all 5 port chargers, it is fairly easy to see.

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

ZoomieFan
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Using this one for about 2 years: http://www.gearbest.com/plugs-sockets/pp_393296.html (own 1)

Using this one for about 1 years: http://www.gearbest.com/chargers-cables/pp_350599.html (own 4)

Never had any problems with them. All are plugged in 24/7 and used almost daily.

Chargers: 1xBasen BD01 5/5, 1x Gyrfalcon All-88 4/5, LiitoKala: 3x100 3/5, 2x202 3/5, 1x402 3/5., MiBoxer C4-12 3/5.
Flashlights: DQG Tiny III 26650 5/5, FiTorch MR35 3/5, Haikelite SC26 HD 3/5, Lumintop Tool AA/AAA 4/5, Nitecore LA10, Sofirn C01 BLF 3200k/5600k 2/5, Zebralight H600Fc 3/5.
Powerbanks: EasyAcc 26800 mAh 3/5, Xtar PB2 4/5, Xtar PB2S 5/5
Waiting for: (DQG Tiny) 21700 EDCs.

HKJ
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When I made a list for charger selection I also got around to improve this list a bit.

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

angerdan
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HKJ wrote:
One of the reasons I post the list here is to get comments about what information to include.

Your table is very useful!
.
I’d like to suggest:
  • number of USB-A Ports
  • number of USB-C Ports
  • number of USB-Ports with QC
  • number of USB-Ports with PD
  • metering results of thermal tests
  • URL to manufacturer’s product page
  • average price

I created some an example table for the features of some review requests:

.
.
And i like to suggest an table for USB powerbanks (you called them USB battery box sometimes).
Especially how well it is usable as UPS.
Helpful categories would be:

  • pass through charging (usable as USV)
  • output turns on when (manual/automatic; button/load)
  • output turns off when (manual/automatic; voltage of battery, current of load)
  • Number of USB-A outputs
  • Number of USB-C outputs
  • Number of QC outputs
  • Number of PD outputs
  • Charging Connector type
  • Number of charging inputs
  • Maximum charging current
  • time for complete charge after empty

Example:

bvamorim
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Hello!

I’m a regular user, so I didn’t know about these risks and I’m a little shocked, I have two SLS-B07 model chargers that is plugged 24/7 at home and at work, even bought 3 more to user in the other rooms. However, when reading your review I am very scared, should I throw it away and lose my money? What risk do I have when using this device? If it is plugged into the outlet with no charging device still a risk? If I have a smart plug (which is supposed to have discharge protection) and plug those devices into these outlets will I be protected? Now I want to also know if my smart plugs are really safe. Hahaha

Thanks!!

HKJ
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bvamorim wrote:
However, when reading your review I am very scared, should I throw it away and lose my money? What risk do I have when using this device?

The risk I identified is that over voltage will break down the isolation and supply mains linked voltage on the output, in addition it has very high ripple. With this charger the next thunderstorm may make it lethal.

I would get rid of them as soon as possible, if you have lived with the risk a day, a week or a month more is probably not a big issue (Except if you are unlucky).

One of my big issue is non-safety rated caps, a thunderstorm may break it and leak mains voltage! The very low creepage distance means that it is dangerous when there is a thunderstorm in the neighborhood or if you live in a industrial area.

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

hank
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>bvamorlm … what risk to I have …?

You should read the review you linked, down near the bottom below all the details you’ll find the TL:dr summary.

Quote:

Conclusion

With fake safety capacitor and very low distance between mains and low volt side there is only one thing to say:

STAY AWAY

Dispose of them in electronics recycling where they’ll be destroyed— don’t just toss it in trash where someone could pick it out and try to use it.

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