Electronic components are more precise now than they were years ago. Thirty years ago most resistors were 10% or beter. Now they are often 5 %.
The electrolytic capacitors may be +100/-50, but most of the others are usually in the 10 % or less range. Even a cheep motor starter capacitor I have is labled as 6 %.
Back when the Simpson 260 was the 'standard' test meter it was difficult to measure many values very close. Now the 'free with purchse' Harbor Freight digital meter will go to about 1 or 2 % and good meters much less.
Some of the China stuff is junk, but some surprises me. I bought some DC volt metes that were mainly a circuit board with a display on it. Good from
0 to 99.9 volts. Out of the 4 that I bought for about $ 6 total including shipping all but 1 followed my Fluke meter up to about 30 volts which was the limit of the poewr supply I used to test them and the other one was off by the last digit most of the time which is often normal. That was reading to the tenth of a volt.
My $ 27 ham band handy takey from China works as well as any other one form Japan that costs 5 times as much.
the same product line from the same company, with the only difference being 5w?
or are they actually two totally different products from different companies (one a more well known brand) and with different specs and different build quality??
in other words, your comparison of two unnamed products without any links is completely bogus.
why would anyone do that?
build quality and reliability should be a priority, not wattage.
if the charger fails, it could potentially fry the device, if not cause a fire.
it's hard to read with that popup in the middle and no way to clear it without an email address, but i didn't see anything that contradicts what i said underneath, other than a nifty typo.
the point is that no single port is going to source 6.8a. fill all five ports with 1a devices and it'll be fine. if one of the five is a tablet that draws 2a, it'll still be fine. if the *total* goes past 6.8a, then not so fine.
If you google for "HC363-5U" you find the exact same part branded by a different company with the EXACT same description EXCEPT that it's correctly listed as a 35Watt device and not a 40W device.
$15
formatting link
$60
formatting link
Hausbell 35W HC363-5U UL Certified (UL No:E310745) Family-Sized USB Wall Charger Plug Smart Charger, Single USB Output 2.4A Max,Output total 6.8A Max,
5P-USB Output for Apple and Android Smartphones,Tablets and More(White)
Hausbell® HC363-5U?Products comply with the United States and national security certification.
product parameters MODEL:Hausbell® HC363-5U INPUT:100-240V 50/60Hz 800mA Max Output:total 6800mA Max Super Charger:5V-2400mA Max Universal:5V-1000mA Max size:8.9×7.3×3.3cm
characteristics Hausbell USB smart charger, using multiple USB output, more convenient a few products charging at the same time, can solve the charging trouble of every family.
Hausbell® HC363-5U ideal for international travel,100-240 volt input,5 USB output:total 6800mA Max.?unibody design,size:8.9 ×7.3×3.3cm, Industrial-grade materials and premium circuitry ensure lifetime reliability.
Description Hausbell® HC363-5U, which possess USB smart charger products and adopt the most advanced smart management chip under international brands, can identify automatically the device and provide corresponding rated charging current.
Automatic identification technology provide a solution to different Consumer electronic products, which can not compatible under different brands.It is the latest research of science and technology the newest research technology in charger industry. Every family can benefit from it.
Smart chips can automatically identify the required current of charged devices according to their brands or types and achieve quickly chargeable. Hausbell USB smart charger, using multiple USB output, more convenient a few products charging at the same time, can solve the charging trouble of every family.
that means it's a generic device that gets rebranded, which usually means it's cheap crap.
two different sellers with different prices. so what?
1 super charger port rated up to 2.4a, leaving 4.4a for the remaining four ports (if you assume the 6.8a is correct), except those four ports are rated up to 1a (not 1.1a), for a total of 6.4a (not 6.8a), or 32w.
There is absolutely no way to tell the build quality. Absolutely impossible without an oscilloscope which you can't expect a consumer to have, and you can't even expect a consumer to tell the build quality.
So what you suggest, while utopian, is impossible for a consumer.
They are all UL approved.
They are all of a "brand" name. (What brand name would you choose anyway since Apple doesn't make them?)
They are all sold by brand name stores (Amazon, Frys, etc.)
formatting link
formatting link
formatting link
You suggest something that is patently impossible for a consumer to do.
This is all the consumer has for quality: Guaranteed Safety:UL certified design(No:E310745). Unibody design,size:8.9×7.3×3.3cm,Industrial-grade materials and premium circuitry ensure lifetime reliability.
HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.