@@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.
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...
@@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.
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
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
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 .
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.
@@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.
@@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.
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.
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 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.
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 '
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...
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.
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.
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.
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.
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.
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)
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 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.
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.
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)
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.
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.
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.
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.
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.
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.
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 😀
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
It is still not a good idea to ship it with an usb cable then. USB standard voltage is 5V, not 4.2V. At the least I would expect a warning not to connect it to a standard usb port.
They could've used at least 1 IN4007 diode with a 3 Schottky diodes Normal diode: 0.5 V voltage drop Schottky diode: 0.1 V So with 1 IN4007 diode and 3 Schottky diodes to make a voltage drop of 0.8V 5.0 V - 0.8 V = 4.2V Or 4.1V for extra safety
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..
... 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
Smart-Cat-Knows-The-Facts-Saying: “What you watchers of these videos don't know is, Mr. Wild-Gone-Diode buys all sorts of dodgy things online and when they come in the post, those Mains Powered, I'm put out of the room for my safety. Yet I watch through a crack from the next room when he test them, keeping my cell phone ready to call the fire-brigade/dept and ambulance in case something goes wrong. Even when the battery devices I see up close-up are too dodgy for my liking, I exit the scene wasting no time. Not that I'm a ‘scary-cat’ but there's no need to tempt fate being careless as an ounce of prevention saves weeks to years of needless suffering."
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 !!!
😂to brate
I swear it got too dark really fast 😬
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.
When I was a kid the only things that looked like those 18650 batteries were fireworks.
Good to see nothing has changed.
Finally a schematic which I understand.
me too bro 😂👌
lmao 🤣
Me too 😅
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
Your accent completely melted my ear wax.. Now I hear better.
Thank you.
At least you have a good 18650 battery holder
Agustinus Reynaldi slap a tp4056 in it
It's very cheap and safe
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
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
"Everything!
I won't risk my fur..."
LOL!!!!!
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.
The best thing in the video is the boy story
best story in 2019.
Yeah!! Another video from my favorite TH-camr! This charger definetly needs more saaaaaalt!
EVEN MORE SALTTTT
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 .
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...
I like your schematics and drawing that you did "amazing"
I was just about to buy one of those... glad you uploaded this
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...
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 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.
😁 "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.
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.
Classic DiodeGoneWild charger/PSU video. Loved it.
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!
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 '
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...
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
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
I don't care what other channels do, I will live here. Thank you for all the good videos.
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.
Sir
All your videos are great
They help a lot to students.
bloody hell that is really dodgy
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.
Watching this TH-camr for the first timeeeeeee. His accent is crazzzzzzzy
lets send this great story at the end to every cheap ebay sellers!
That's great detective work of you Diode gone wild
Even the ghosts are scared of dodgy electronics 😁
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.
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.
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.
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)
Oh my god! No overcharge protection! Super dangerous
This was worth watching just for the story at the end.
Exceptional video, short but powerfull. Many consumers have no idea about those things.
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... 😎
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.
My God! Is this not THE best channel on TH-cam people?
This is not charger! This is battery holder!
I like the bloody hell drawing on 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.
Your cat certainly beat a hasty retreat!
Bettery. haha I love your videos, man!
You're a better director than brazzers I can say that already
I was hoping to see a full charge cycle demonstrated.
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)
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.
If they used an Powerbank Chip it should be good/save.
and waste 2 or 3 $?? nah.
This thing is cheap as it get and you get what you pay.
Charge modules is just cheap,much cheaper when in bundles
An typical lithium charger chip costs around 0.4-0.5 USD if purchased in a large quantity
Useful video 👍
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.
The haunted charger! Run!! Hahaha I love the tipe of explanations for this videos
11:37 nice paintings :D
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.
I like the two dimensional house walls at the end. :D
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.
You've lost weight since that fire. Your cat knows to disappear when you say "What can possibly go wrong"
Love the horror story and graphics!
This thing is just a battery holder to power something that need usb port maybe???
I think you might be right!
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.
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.
This is probably the dodgiest design I have ever seen. Never saw a iron wire before.
Loved the cartoons at the end. I laughed out loud. Thanks
This might not be a good charger but works as a good holder!
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 😀
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
ElectroBoom mentioned your channel in his last video :)
Can you test the dso139 oscilloscope?
This is not a charger, and it said on the box: "18650 charger BASE". You suppose to connect it to a charger.
It is still not a good idea to ship it with an usb cable then. USB standard voltage is 5V, not 4.2V.
At the least I would expect a warning not to connect it to a standard usb port.
Very likely the one combining the charger base with the USB cable is a sharky Ebay trader, combining products that shall not be combined.
Well done, keep it up, thank you for sharing it with us :)
This is for power bank not for charge use,simple power bank only,for mobile phone with micro usb cable.
That story at the end is my favorite story
This story I will remember till my last breadth
Smart cat! thanks for the share...
They could've used at least 1 IN4007 diode with a 3 Schottky diodes
Normal diode: 0.5 V voltage drop
Schottky diode: 0.1 V
So with 1 IN4007 diode and 3 Schottky diodes to make a voltage drop of 0.8V
5.0 V - 0.8 V = 4.2V
Or 4.1V for extra safety
the cat is getting educated (like us) and runs away because it now can detect crappy chargers
I love the part of mini tale the devil charger haha much good
The burn marks on the carton. Oh, my.
Fvck that!! This should be on trending, especially those schematic drawing on last minute !!!
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 🤷♂️
The story of kid and dodgy charger.
Príbeh o chlapcovi a riskantnej nabíjačke.
:-)B-)
LOL :)
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..
I think this charger is special design for their own 4.2V Lithium ion charger adaptor which are not compatible with normal USB..
... 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
Smart-Cat-Knows-The-Facts-Saying: “What you watchers of these videos don't know is, Mr. Wild-Gone-Diode buys all sorts of dodgy things online and when they come in the post, those Mains Powered, I'm put out of the room for my safety. Yet I watch through a crack from the next room when he test them, keeping my cell phone ready to call the fire-brigade/dept and ambulance in case something goes wrong. Even when the battery devices I see up close-up are too dodgy for my liking, I exit the scene wasting no time. Not that I'm a ‘scary-cat’ but there's no need to tempt fate being careless as an ounce of prevention saves weeks to years of needless suffering."
Maybe this was intended to be used as a battery-bomb?
Clever design,you can produce for 0.5$ and sell for 5$.In some poor country for 10$.