Dangerous USB-powered 18650 Li-Ion charger
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- เผยแพร่เมื่อ 26 เม.ย. 2019
- Today, let's take a look at a cheap charger for 18650 Li-Ion cells. It's powered from a USB port, not mains, so it should be safe... or shouldn't it? Watch this video!
You can support me on Patreon:
/ diodegonewild
The list of 18650 Li-Ion cells I've tested. Note how many of them say PROTECTED despite having no protection:
danyk.cz/test18650_en.html
My Instagram:
/ savage_danyk - วิทยาศาสตร์และเทคโนโลยี
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That storytime at the end killed me. The cat was 100% right about leaving :)
Lazar Šaronjić
He has a great imagination, so funny to :-D
@@zx8401ztv He is awesome, funny and does unique things on his channel. And has a cat. I bet professors from my university won't explain things like led drivers and SMPSs like he does. Thats why people should at least do a 1$ patronage if they use adblock on youtube. Nobody should do things for free for the community if they are good at it.
@@lakiza55 Wow... Now you've convinced me to become a patreon !!!
Tale of Diode : The Evil Dodgy Charger
😂to brate
When I was a kid the only things that looked like those 18650 batteries were fireworks.
Good to see nothing has changed.
So you need lose weight before buying a dodgy charger...good tip.
And if you have, then the window will often be a good distance from the ground (especially in bedrooms or flats) so jumping out of the window will result in broken bones or fatalities...
Should have heeded the warning when the cat thought it might be too graphic... :(
Or make larger windows
@@TheSpotify95 climbing out of the window into another window or on the roof might be an option. A friends house burned down and he climbed on the roof and went into some balcony or something i believe.
Finally a schematic which I understand.
me too bro 😂👌
lmao 🤣
Me too 😅
You are too simple sussy baka
Hey i was watching ElectroBoom today and I saw he mentioned your video of Suicide Shower
Which video are you talking about ? Can U mention the specific link ?
@@hsnhbo th-cam.com/video/SHGo-52wCDc/w-d-xo.html 7:30
Uqq
Too
Me too xD.
"Everything!
I won't risk my fur..."
LOL!!!!!
Your accent completely melted my ear wax.. Now I hear better.
Thank you.
the wild thing on this channel is his accent xd
wow never had so many likes xd
never heard this accent before but it's really awesome
@Cringy Cat Do you ever heard Dutch people speak English? You could hear it directly! :'-)
which makes me thinking, did he intentionally made up that accent, or it was just how the way he speak
well, i still think he intentionally made that up for the sake of fun/funny/interesting/cute/different
Better than India
Now I’m going to start testing cheap USB cables with a magnet. I really hadn’t expected that copper-plated steel wire is being used at all.
The cost cutting goes on and on. Iron is the next step after aluminium. You can't find a cheaper metal.
At least you have a good 18650 battery holder
Put a protected usb charging component in it
Agustinus Reynaldi slap a tp4056 in it
It's very cheap and safe
Technically the "charger" (battery holder) is fine, it says that accepts 4.2V as input, so it seems to be designed for a use with some additional active circuitry or for a use in a pinch as human monitoring the charging :D
Yeah!! Another video from my favorite TH-camr! This charger definetly needs more saaaaaalt!
EVEN MORE SALTTTT
*SHORT CIRCUIT INTENSIFIES
I was just about to buy one of those... glad you uploaded this
The label on the device is misleading , the 4.2 VDC input is not a common voltage , there is no commercial power adapter give this voltage on a DC jack unless it is a lithium charger , anyway you can fix this device by adding a IP4056 module for AliExpress & the charger will functioning properly with all protection features , thank you for sharing this video .
I like your schematics and drawing that you did "amazing"
The best thing in the video is the boy story
best story in 2019.
Something that dangerous should not even be allowed on the market. Most consumers don't have our knowledge about Lithium Ion cells, and would just assume that the little green light goes out when fully charged. One thing for sure, If I buy a 18650 charger, I will test the open terminal voltage, or threshold cutoff voltage, before attempting to charge a cell. That just can't be left to chance. Even if the cells have built in protection, you can't always rely on it to be calibrated correctly. The cheaper the charger, the more suspicious you need to be.
It says "18650 charging base' , so maybe the cable isn't even original and it was originally sold as an extension to a battery charger to put more batteries in it at once. And then some guy came and resold it together with a cheap cable as a battery charger.
Yes, maybe the base was meant to be connected to something with a charging control circuitry in it and the cable was meant to power some other device. They may have just accidentally combined those two things, not knowing that the base is empty.
Maybe, but the only things you get when you buy one of these is the ‘base’ / cell holder and the USB lead...
Skvělé video a ty malůvky jsou fakt luxusní :D... Prostě to nemá chybu.
Those last two pictures were absolutely awesome 😂
i was hoping for an explosion demonstration but after your storytelling i’m equally satisfied
Hi D.G.W.,
Practically this item is only a battery holder sold as a charger: they just forgot to mention that you need to add the electronic control and limitation :-))
That's why the conductor resistance was so high! the conductors are in iron!
I found myself in front of a similar conductor once I made an extra battery pack for my flash .... I put half-torches C instead of the AA stylus and connected them with a cable recovered from a headset ..... but the flash was working worse than before: analyzing the cable I saw that at its head the 9 V voltage went to 3 volts at full load (load curve of a capacitor: logarithmic current) and then reached the correct voltage at the end of charge (current close to zero) by analyzing the headphones I realized that the resistance of the headphones was 600 ohms instead of the usual 8 ohms and therefore the cable, made of steel to increase mechanical strength, could also have a high ohmic resistance that would not have affected the transfer of those microscopic currents.
to make the flash work better than before I had to use a 1.5 mm section cable, only 20 cm long !!!
This gives you the idea of how much current my flash needs to start charging.
Thank for sharing your warnings, and i'll see you ( and the cat) on the next video!
I have a few of those chargers and they are meant to be used with a usb lithium charger with barrel jack output. The ones with the circuitry built into the USB part.
I would use these "chargers" as holders for my main charger using TP4056 or some other Adam SK/EN patented circuit :)
@Против Глобал He isn't wrong, this device was sold as a charger even though it's not.
Sir
All your videos are great
They help a lot to students.
Not a charger, just a battery holder to which the user can apply arbitrary power in either polarity. Bloody hell.
yep, "frying tonight" 😲
@@andygozzo72 this is meant for use in DC lab power supplies probably
@@AhnafAbdullah Except it comes with a USB to dc plug cable, not say two Banana plugs.
All this is someone in China has gotten hold of a legit casing for a USB charger, and put fake innards in and added a crap Copper Coated Steel cable set.
I have these batties and chargers. I never trusted them and always pulled the battery out way early. BUT I could of went out and forgot to pull the battery out or just fell asleep. Now I know. Thank you for saving me from a potential disaster. Btw beautiful cat.
That cat has heard this before "what could go wrong" Cat :I'm outta here!
I don't care what other channels do, I will live here. Thank you for all the good videos.
Bettery. haha I love your videos, man!
That's great detective work of you Diode gone wild
A perfect gift for your very best enemy. I should just add one of those usb charger without reverse polarity protection or even grounded. Better than call to an Eraser...
The USB lead as a resistor seems not too different to the old valve (tube) radios which had no transformer, and used a resistive mains cable to drop the voltage - they were called 'curtain burners'. I think we may have come full circle here :o( Like your wise cat says - 'too dodgy, I can't look at it '
😁 "Haunted charger"
I order loads of stuff from AliExpress in China, but I never realized how dangerous and crappy all that stuff is.
There is a lot of great stuff on AliExpress, but you need to stay away from the dirt cheap stuff. If you buy an USB-charger on AliExpress for €1, you get shit. On the other hand, pay €10, and it often is darn good quality. Remember, the Chinese have to work with the budgets we impose on them. If they make crap, it means the budget is usually too low. On the other hand, if you are willing to pay a fair price, it appears they know quite well how to make quality products.
Nevertheless I always recommend that the first step you do with stuff received from China is to open it with a screwdriver and inspect yourself. For reasons shown in these video's.
Watching this TH-camr for the first timeeeeeee. His accent is crazzzzzzzy
Well, it is called a "BASE", not a charger, and it does say the input voltage should be 4.2V.
But it comes with a usb cable.
@@lakiza55 It was sent in by someone. We don't really know for sure what it was sold with. Once I read the base, I wouldn't use a usb port, though. Well, I might, to see if it explodes. ☺
@@bills6093 od course, i got a 600mah cell that's still hasn't beed disposed, ao might give it a fixed 5v with 1A limit just to see what happens. Anyways these USB to barrel type cables should only be used to hang those who came up with the idea and ones who approved it.
@Saitama BaldyFrom 2 years ago. Really? Plus I already addressed the cable...
Great, You find me a good looking battery holder for project's that could be used externally free standing. That's looks like 3.5mm DC connector, solder proper connect to external adjustable DC-DC and we have nice setup.
So it looks like these were designed to ship with one of those 4. 2v Li-ion wall wart chargers, but some 'bright' spark ended up with a few thousand of the battery holders and just included a cheap USB cable with them instead.
Exceptional video, short but powerfull. Many consumers have no idea about those things.
Well done, keep it up, thank you for sharing it with us :)
Do you remember that dodgy 18650 battery charger (without base) that you cut off the connector? These two go together. I have them. I have Klarus K1 charger. (Universal)
If i understand this correctly, this is only a battery holder and it is not designed to be usb powered, it should come with a dedicated charger which has voltage/current regulator and all other sorts of protections.
Thx for this video ! Can you ask your donator where he bought this "charger"? I can't find it, it may be interesting as a simple 18650 fixture with a standard connector, if the price is low..
This was worth watching just for the story at the end.
You could make a video showing how to modify it with a cheap TP4056 board. Best way is to lose the connector and connect a USB cable (permanently, to prevent connection of anything other than USB 5V) through it's hole to the TP4056 Board. You'd also need a common anode dual red/green LED somewhere on the case. TP4056 datasheet mentions that it is protected from reverse battery connection. Most of the TP4056 boards have one resistor that needs changing for a 500mA charge current, they are usually set for 1A, which may be too much for a low capacity (fake) Li-ion battery.
The haunted charger! Run!! Hahaha I love the tipe of explanations for this videos
Your comic story at the end is the living proof of devastating influence of cats on man :D I'm not sure what you smoking there but next time try half of it! :D Great content! Best regards from Poland!
I would offer myself to consume the remainig half... 😎
Loved the cartoons at the end. I laughed out loud. Thanks
My God! Is this not THE best channel on TH-cam people?
Your cat certainly beat a hasty retreat!
With the battery in series with those two resistors, don't you have a voltage divider? Doesn't this mean the voltage applied to the battery would be the total voltage, minus the voltage drop across R1, which would be the resistance of R1,, divided by the total resistance of the circuit, multiplied by the input voltage?
You're a better director than brazzers I can say that already
I like the bloody hell drawing on the end
Oh my god! No overcharge protection! Super dangerous
At least you can use it as a battery holder to charge a single cell at once from a voltage and current limited lab PSU
Would be interesting to find some unprotected cells and put them to charge using this charger in a controlled, fire safe environment location and film the explosions for even greather impact.
Do you put in the recicle bin the papers that you write the schematics of your videos or you save all them for future use?
I save them because I'm a hoarder :). Occasionally I use the old schematic to compare it with some similar product.
@@DiodeGoneWild Nice!
11:37 nice paintings :D
... very interesting video ... I found it by Google-searching '18650 Charger Base Model:XY-186B' (and your 'Li-Ion cell charger with (too) simple design. With schematic. Charges to 4.45V!' by G-searching 'Li-ion Charger Model:XY058') ... the charger (w. dual-battery base) was packed in with an INOVA KC-31 LED flashlight ... I'm a little puzzled as to the design behaviour of the LEDs (2) at the end of each battery bay and wonder if I might get some guidance ... the 2 LEDs on the base seem only ever to glow red ... whereas the LED of the companion 'Li-ion Charger' 'XY058' wall-wart changes from orange (meant to be red? yes?) to green ... upon completion of charging.
Would you say that the base unit LEDs (2) are designed to turn green upon completion of charging as well? Thanks, K Mc
I own a NK-205 charger. It comes with my flashlight, but there a some differences to your charger.
First: the input is DC5V but the output is announced to DC4.2V.
Second: There are screws on the back
Third: If you opend the charger you found a electronicboard inside to reduce the power.
Unfortunately i still could get 4.48V Chargerpower, which is still to much.
Ok, my multimeter is rubbish so the 4.48V are not reliable.
I love the end of the vidéo 🤣🤣🤣 I like it 😊 thanks for your vidéo à verry apreciat it^^ Sorry im french my english is bad 🤷♂️
Useful video 👍
This is why I build my own chargers, I know what goes into them!
I agree 100%. I like building my own charge regulators. Lithium batteries are safe and reliable, but not forgiving. I've never had a problem with a lithium Ion battery, because I've always been careful about finishing voltage. I usually don't charge beyond 4.16 volts, which seems to give me 95% or more of the rated capacity, while allowing a little margin for error.
I like the two dimensional house walls at the end. :D
I was hoping to see a full charge cycle demonstrated.
bloody hell that is really dodgy
Even the ghosts are scared of dodgy electronics 😁
lets send this great story at the end to every cheap ebay sellers!
Mine TP4056 has 4.5V open circuit voltage, but it charges correctly to 4.2V. I never saw more horrible charger than this. Why this is not illegal?
I love the part of mini tale the devil charger haha much good
Another point- Li-Ion chargers should also take care to cut of the charging entirely when fully charged. These batteries cannot handle trickle charge, which can result in explosion.
Bloody hell 😂😂😂. I am curious what accent is that can please let me know. I enjoyed your content.
I put a battery into cheap charger. This time i did not know that which battery terminal is +/-. So i put the battery in with wrong polarity. Magic smoke came from the charger imediately. Charger was not connected to wall output yet.
Charging with only a resistor in series is only ok for NiCd and NiMH since those limit their own voltage. It's certainly NOT ok for lead acid since those have a charging regime that's dependent on externally limiting the voltage to prevent electrolysis (and eventually an explosion, just as with lithium cells).
Sad thing is, this unsafe charger would be a little less unsafe if they had only bothered to put a single 2 cent diode in series.
I'm not sure what made me laugh the most, the cat or your mad story drawings LOL :-D.
You are a silly sod :-D.
I did expect aluminium wire, but not steel, i would have rigged up a regulator for current limiting and a voltage limit disconnect, maybe a comparitor.
That purl charger i do like, did you reverse engineer one channel for your curiosity lol.
:D. The cost cutting goes on and on. After aluminium, iron had to come. The good thing about iron is that you can detect it using a magnet without cutting the cable. If anybody needs a relatively good and yet very cheap charger, the powerbanks with no cell in it are the best option. For 90 cents including shipping, you get a charger with a proper charging chip. You may add a fuse in series with the cell just for the case the chip goes short circuit. And it even works as a power bank!
Got some "low esr Sanyo 25V 1000uF" electrolitycs. Size is the same as the 16V 1000uF from the Sanyo datasheet for that part no. Leads stick to a magnet(are you kidding me guuuys?) and they do measure 1000uF at 1KHz. So either the esr is terrible and they overheat on a high frequency SMPS or they blow up at their "rated" voltage. Either way, they are in the "last resort" bin. (I'm a hoader so nothing gets thrown away xD)
I have a rechargeable led work light. It comes with a 4.2v charger brick with an usb port on it. So the wall plug itself is the charger, but you can put the usb plug in an usb charger too, so then you overcharge it. It is a very bad design. There shouldn't be an usb plug on the charger or the charging curcuit should be in the light itself.
This might not be a good charger but works as a good holder!
Hello! Please show at what charging voltage a Li-Ion battery explodes.
it is any voltage more than 4.2 volt.
I charge mine to 4.8v with no problems
@@wolfgamingcentral5442oneday your news will come but not you.... NOT YOU!!!
Your videos are very great, but I want to ask something, I mistakenly bought 21 120V American LED lightbulbs instead of 230V, I fried 2 of them, can I use them? They are 12V 100mA 50/60Hz (GE Link A19). I really want to use them
If they use a capacitive dropper, you could swap out the capacitor. If they use a little regulator board module, you could swap that out.
Have a look at some of Big Clive's videos.... He's obsessed with LEDs.
@@tin2001 Okay thanks, I will consider. Could I also swap out brdge rectifiers or I am saying nonsense?
The cat lost his fur escaping the fire.🔥
This is probably the dodgiest design I have ever seen. Never saw a iron wire before.
Smart cat! thanks for the share...
You have BALLS to put that battery in backwards. I've never been able to do it.
You've lost weight since that fire. Your cat knows to disappear when you say "What can possibly go wrong"
This is a perfect example that we really need to learn this information, how to make things, how not to buy China made death traps. Thank you for being you 😀
Just as I thought, the cell is connected straight to the usb. You want it to be 4.1-2v at maybe half an amp.
ElectroBoom mentioned your channel in his last video :)
i like your vids, very useful. plzase tel us how you calculate the true capacity for those fake batteries
This story I will remember till my last breadth
Can you test the dso139 oscilloscope?
That story at the end is my favorite story
So according to DGW "This is a horrible disaster" ... but if they sell it on Ebay, it must be good right?! lol
It says "18650 Charger Base" so I guess it's for connecting with those dodgy 220v to 4.2v lithium chargers/adapters that has the same jack with them. So at least they could have avoided providing a USB cable. Would have been less dodgy at least.
greetings. looks at the feline helper. this drawing ... what a more dramatic final !!! very good. success.
You are a legend!
Keep a diode in series for polarity protection and to drop some voltage
A diode can be used as a polarity protection in a load, but not in a charger. Think about it for a while and you will realise it :). And using the USB voltage minus the diode voltage drop is way too inaccurate for a Li-Ion. Both the diode voltage drop and the USB voltage are quite vague.
@@DiodeGoneWild
Ya that's right!!
But once I used two diodes in series with battery to bring 5v to 4.4 v .
venkatesh ssk - the problem is USB voltage at best can be between 4.75V and 5.25V. Or outside these limits if a cheaper designed PSU is used.
And the forward voltage of a diode does change with the current. So when the current is low, the forward voltage of a silicon diode can fall to as low as 550mV.
Congratulations for this warning of extremely dangerous product, I hope that the manufacturers will be found and will be judged for the endangerment of people and goods, especially that it is enough simple to add a circuit 03962A with a TP4056 to regulate the voltage less than 4.2v
That was one Grimm fairy tale.
It's a really bad day when you realize you installed fake iron Chinese cables into the walls of your new house.
This is not charger! This is battery holder!