its less crappy compared to other chargers and actually seems pretty well built with proper y cap, proper isolation distance, sync rectifier compared to a diode, properly rated, interference inductor, fuse, ntc, chonky FULL BRIDGE RECTIFYA, reasonable pretty nice transformer, insulation shield.... Just sad it cooks itself
I bought two similar chargers but they came with usb cables so it was a steal, i will use the chargers when i have to charge devices that need 5v and 3a 15w they also get hot when i use the max 20w.
I have a FNIRSI FNB58 USB tester that stopped working while testing a charger with the QC3.0 fast charging protocol activated. The charger was outputting 20V with a charging current between 1.5 and 2A. The charger was connected to the USB Type-C input, and the load was on the USB Type-A output. The tester turned off in the same way as shown in this video when exceeding a certain current, but I was unable to get it to turn back on. I tried with other chargers, but it still doesn't work. According to the product specifications, it should be able to handle up to 28V and 7A, so I am surprised that the device failed under these conditions. Does anyone have any idea if this is normal and what I could do to repair it?
Funny that this is $15, Ikea recently started selling a 45W two port USB C fast charger for the same amount (Sjöss). Supports PD 3.0, Q4+ and PPS. 5, 9, 12, 15, 20V. It's on the US site but also available in the UK (£10) and probably in Europe too. Ikea website says the weight in the box is 140g.
Ottawa, Canada $17.99 Will pick up one this week thanks to your excellent comment. Ikea, unlike the Chinese, have an actual ass one can sue. Therefore, their electrical stuff is top notch.
What about the 1:10 eg 0.434 32 A why there's space before 32 A? I can't decode😂. I get that's 0.434 Amps, but what are those two last numbers in every field?
Looks like a decent device for the price. Just don't reach the 40W load ... I mean, for such a little price it seem nearly over engineered and unexpectedly full of decent components.
I actually bought like 3 of it's crappier equivalent, just to open them up and get the female USB C ports out, got 6 total with bi-directional power transfer, as these are cheaper than any USB C ports I can get here for tinkering.
Ďakujem ti za toto video, musím uznať, že tvoje znalosti spínaných zdrojov sú naozaj na vysokej úrovni. Táto nabíjačka je odosť lepšia ako tá predchádzajúca za tri doláre, aj keď na plný výkon hreje až moc, ale ako si sám povedal, na menší výkon by sa používať dala.
na spinane zdroje ze su dobri na STU az tak, ze si nas vybrali Taiwanci investovat pre tuto obast v EU u nas. Cipy napriklad v Nemecku TSMC. U nas zdroje.
Really love to see you testing slightly "higher end" chargers like this. I actually have one of these myself, so it's great to see that for the most part it's safe and well designed - though clearly not meant for continuous 40W loads. I suppose in its defense one could argue that most USB-C loads (like smartphones and tablets) don't draw constant high currents like that but tend to taper off quite quickly, and at least this isn't quite a laptop charger in terms of output power (or, at least, for any laptop that would draw more than 15-20W under load when fully charged). Those temperatures are still not acceptable, and this really should have had some kind of metal heatsink included in its design, as clearly "sinking" to the plastic casing through those flimsy pads is completely insufficient. Btw, do you have any plans to test the new IKEA Sjöss USB-C chargers? They're close to this in price, and IKEA chargers have tended to be very well designed previously from what I've seen.
A metal heatsink probably wouldn't help the slightest. The case has the same surface area and that's just too small to dissipate the heat. Bigger housing or higher efficiency would do the trick.
@@DrHouse-zs9eb True, but a metal heatsink would increase the size of the casing as there's no room for one with the current design. And a larger casing with no heatsink wouldn't really help, at best it would increase the time it took to heat up by a few minutes. You need a highly thermally conductive material to get heat away from the hot components and to the outer edges of the charger where it can be dissipated into the air. The heat output of this at 40W is still too high for continuous use unless it had some unreasonably advanced cooling, but even a pretty basic aluminium heatsink shroud surrounding the charger and touching the hottest components inside would lower internal temperatures significantly. Not enough for continuous 40W output, but probably enough to extend the charger's lifetime by quite a bit.
@@d46512 To be clear, I don't mean an *outer* metal shell. Most high quality high output chargers have an internal metal heatsink, which typically wraps around part of the outside, but inside of the plastic shell. No grounding needed.
If you want to open this glued connections, it is very easy to break the glue with a slight hit of a hammer. So you do not destroy the housing and you can glue it together again with no damage on the housing..
@@riangarianga Squeezing the joint with a vice also usually leads to it popping open. And for the hammer trick use a rubber mallet, then you can hit as hard as you want basically
@@MrOpenGL Ok, thanks! I'll try on some disposable items first. I have both a rubber mallet and a nylon hammer, but still one needs to be careful with them.
@@riangarianga - You should take a old laptop battery or a power supply from the electronic trash and try to take it apart. For the laptop battery you need more force and it is more difficult. A powers supply you can open mostly very easy. So use a test-object to learn some skill and then you are able to open neraly every glued connection.
It is 40W. Most phones charge super fast with that power. Its actually unnecessary to leave it for hours with maximum load. I will get hot, sure. But it wont get that hot in a short period of time, at max load. my 45W Huawei charger wasnt even hot to the touch after a full charge on my phone, only if I accidently left it for hours during work.
USB-C can be used for laptops, soldering irons, etc. Not just phones, and those can consume huge amount of power for long periods of time. High quality chargers don't get that hot at max. rated power output. Charger in the video should have been limited to 30W.
My smartphone has a 5000mah battery and charges at a maximum rate of 18 watts so I would need to be charging two of them at the same time for a decent period before it gets excessively hot - looked like a good device and worth the money.
Also your phone won't be pulling 18W constantly while charging the battery - typically you'll see the peak power draw only up to 40-60% charge, then it will drop off quite quickly to not damage the battery.
If you are aware of that and would make sure it’s never used above 30W then it would be ok, in theory. It would be a good charger if those limits would have been built in. As it is now, I think it’s not worth the risk. Keep in mind that it only needs to go wrong in all of its lifetime. It’s unfortunate because other than that, it’s very well designed.
@@Conservator. It is unfortunate that it has such insufficient cooling, but also remember that smartphones and other small electronics don't draw anywhere near their maximum charging current for the full charging time. To avoid damaging the battery charging will start slowing down from ~40-60% and go ever slower as the battery fills up. So even charging, say, a phone and a set of headphones, or two phones, or a phone and a small tablet would be fine in most cases. Just don't connect two tablets or large battery phones with fully drained batteries at the same time.
@@Conservator. Drawing 40W isn't the problem. Drawing 40W for extended periods of time is. Remember, in the video it was tested outputting 40W constantly for two hours, and while I'm sure it reached the temperatures we saw after far less time than that, I still wouldn't be worried if it was to occasionally output 40W for 20-30 minutes at a time. And no regular use of a charger like this will see it outputting a constant 40W for hours. Now, is it a charger that's likely to last forever? Obviously not. Is it dangerous to use with the types of things people typically connect to chargers like this? Arguably not, for the reasons I've given above. Will it eventually fail? Yes, obviously. Does that make it unsuited for things like charging smartphones? Again, arguably not.
Not bad if you only use it at reduced load. The problem is if your device or devices are capable of charging at the higher power levels, they'll do it irrespective of the internal temperature of the charger. Besides using chips with some kind of thermal throttling, I'm not really sure how they could reduce the temperature of these kinds of chargers. They're just too small and have too little surface area to dissipate that much heat.
We had a hand blender and its motor burned out. Upon closer observation there was a warning text printed on it, something similar to this: "do not run it for more than a minute". Sometimes you just have to know how long it can be used before it gets too hot.
Yep, just bought a cheap blender, it says: "run for 60 seconds max, then let cool down for 5 minutes" Makes sense considering it is completely sealed and has 800w motor in it. To be fair, the thing can do most stuff in under 30s anyway.
@@galaxya40s95They did cheap out on a thermal switch in the motor windings. If it had one, there would be no burn-outs. The whole “use it for 60s” thing is silly when it could be automatically enforced using cheap components.
@@absurdengineering I definitely agree. But that is kind of what you expect when buying cheap stuff. Hardly enough money to pay for decent materials, much less for proper engineering I suppose. And much easier to add a sentence or two into the manual. But imo as long as you keep this in mind and do not try to use it in professional environment, its fine.
This is ridiculous to see a chip running at 158 degree C. Have you calibrated your thermal imaging camera maybe its faulty or off by some larger degrees. PL check it too. Thanks for the good work.
this charger surprised me because of using quite exotic color of LED and the fact that it looks similar to the "iron-laden" 65w charger it has quite good transformer and claims the rating but not for long At least they put some effort on it
I have a similar one. But i only paid around 5$ it's 35w GaN has a USBC and USBA port and even a small display that shows the wattage being drawn from the charger! For the money it's worth good. Mine doesn't get alarmingly hot even at full load. I even bought another after seeing how good it was.
For a charger bought from Aliexpress, I think it is a very good system. I would also like to add that review videos of quality chargers are more enjoyable, do not hesitate to raise the bar in the future, I know it will upset your wallet, but there is nothing you can do.
the electrical design looks pretty good, but the industrial designer got the EEs in a pickle with such a tiny space to cram everything into getting so hot
I wonder if there are any USB-C supplies from Temu or something that just common the two USB ports together rather than use independent DC-DC converters or transformers? That would be interesting. Plug in your laptop and your 5V power bank at the same time and get flames. Technically two different devices would just cause a data conflict when requesting the voltage, but I’m sure they’d find a way to make it “work.”
this is funny how well this PSU is made but the only flaw in its design is small overall footprint... It would be decent charger if it was about 20-30% bigger and not this cramped...
Not terrible, a whole lot better than the last one ($3 "65W") and at 20W or 30W this thing would be fine. Besides, I wouldn't want to fast charge my phone anyway as it will make the battery wear much faster.
Çok meraklıydım❤ biraz endişelendim 🔟acaba bu da diğer iki gibi sarı olup da 45 Watt olan acaba bu da sahte çıkar mı diye endişelendim ama çıkmadı senin 2 videon olan 65 Watt olan ve sarı olan şarj aleti Amazon'da çok ucuza satılıyor ucuz olan şey sahte❌❌ olduğunu gayet iyi biliyorum Çektiğim videoları bize çok yarıyor sayende bilgileniyoruz💯
15:40 you can get two power MOSFET, tank capacitor, 20v+ zener, ultrafast rectifier, centertap the dual primary And about 100uh inductor Remove the feed back from the transformer And use feedback wound on same inductor Or just regulate power and current on secondary a side, and output constant voltage it's a flyback so the cheap zvs driver works. The problem with em back in the day was running over 100volts without blowing up transistor gates
Push 100w and run at half the heat waste That topology only switches the transistor on or off only when the voltage across drain and source is as close to a possible zero Could also switch based on when the current across is zero too Or when the voltage and current cross with effectively no flow of power too Want a extremely low rds on the transistor Make sense to turn a switch on or off when no load is apparent Less work it actually needs and switches can switch faster Cant have switching loss when the switch hardly sees any apparent power...
So it delivers the power but on cost of lifetime and safety🥵 At first I wondered why it was that much discolored, maybe exposed to intense sunlight, but after your measurement of 110c question is answered😂
Does the flyback transformer in a CRT TV or minitor worn in DCM or CCM? I never had an oscilloscope and a high voltage probe to check it. What about the self-oscillating 2N3055 circuit used by hobbyists?
Idk why I'd want to risk it with a 15€ aliexpress charger (other than to have fun with tearing it apart lol), when the anker 65W is like 20€ on Amazon and smaller lol
Unbelievable, you found one which actually provides what it claims. Disappointed by 2 minutes in as it appears to suffer intense heating. Too hot to leave plugged in unattended. It will have a very short life.
Zaťažovanie nabíjačky trvalým výkonom s tým, že jej celková spotrebovaná energia presiahne 4-5 násobok kapacity batérie v telefóne je overkill. Skúšal som nabíjať notebook cez obyčajnú xiaomi USB-C nabíjačku ktorá mala 65W výkon a ten notebook sa behom hodiny nabil na 100% bez toho aby sa nejako nabíjačka prehrievala. Skúsil som to druhý krát s tym, že hneď po nabití notebooku som začal nabíjať 20Ah powerbanku ktorá podporuje PD nabíjanie a čudujte sa, tá nabíjačka bola natoľko chytrá , že keď sa začala prehrievať, sama znižovala nabíjací prúd lebo sa mi tá powerbanka nabíjala asi o 25 minút dlhšie ako obvykle. Keď tá nabíjačka zvládne trvalý výkon 40W po dobu 30 minút, tak je dobrej kvality aj keď to je čína. Skoro všetky telefóny s podporou PD sa nabijú zhruba za 30-40 minut pri 40W. Samozrejme že 40W berie len v určité momenty kedy teplota baterie nie je nad limitom tepelen ochrany. Snáď každá jedna nabíjačka bude mať vnútornosti horúce nad 100 stupňov keď ju budete trvalo zaťažovať 40W na čo vôbec nie je stavaná.
Litz wire, not really Litz, but interesting they actually went to the trouble of a multi-strand insulated wire to reduce the skin effect. They made a good try, but no cigar.
I have a FNIRSI FNB58 USB tester that stopped working while testing a charger with the QC3.0 fast charging protocol activated. The charger was outputting 20V with a charging current between 1.5 and 2A. The charger was connected to the USB Type-C input, and the load was on the USB Type-A output. The tester turned off in the same way as shown in this video when exceeding a certain current, but I was unable to get it to turn back on. I tried with other chargers, but it still doesn't work. According to the product specifications, it should be able to handle up to 28V and 7A, so I am surprised that the device failed under these conditions. Does anyone have any idea if this is normal and what I could do to repair it?
