"DIY" USB Power Bank with 4x 18650 Li-Ion cells
ฝัง
- เผยแพร่เมื่อ 11 ก.ย. 2024
- Building a DIY Power Bank with 4x 18650 Li-Ion batteries using a kit. The sellers on Ebay call this PowerBank kit "DIY" because it comes with no cells and you have to put your own 18650 Li-Ion cells in it :). For just $1.80 including shipping, it's still not bad. I also added fuses into it for more fire safety.
WARNING: Li-Ion batteries and power banks can catch fire or explode! Risk of fire, injury and burns.
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The housing seems to be either copied from a Xiaomi power bank or Xiaomi's supplier ran an extra production shift. The original Xiaomi power bank is 10.4Ah and can actually output 2A, but in the DIY version, they just put the cheapest circuit that fits into the case.
This dude out here singing 😂 😂😂😂
What do you mean? :)
😁🤣🤣
8:15 Fire extinguisher lol
*BEER*
I have watched allmost every your video on yt...and all I have to say is BRAVO. Such a educational and entertainment show - funtastic ! Please, go on...allways waiting new stuff from You . Greetings from Balkan.
Thanks :) I will do my best to keep making more videos :).
I recently bought one of this and i got the black pcb board instead of green. The chip is HOTCHIP PB0059E (8 pin chip), it also has DW01 Battery Protection IC, and there's 1R0 Inductor. When i test it, the output current is actually 2A. The input current is the same, 2A. They sent you the green pcb with HT4936S Chip instead of black pcb with PB0059E Chip. The HT4936S is rated for 1A Output and Input Current, While PB0059E is Rated for 2A Output and Input Current. Anyway, Good video.
U2 is the footprint of DW01 Li-Ion 1S protection IC and below it Q1 is the footprint of the 8205A dual MOSFET. If they were populated, you could use the actual B- connection.
I love your videos, optimal duration, without any unnecessary talking, a hilarious accent :D , cats , and the fact that you are from the Czech republic, amazing hehe. Greetings from Bosnia and Herzegovina
Thanks :) I will do my best to keep making those videos ;).
I’ve seen other Chinese company’s sell theses as normal power banks but those ones are modified and they are dangerous and sometimes have batteries filled with sand.
B- is used when a protection circuit is present on the PCB (which is not there).
I don't solder the batteries, I use a battery spot welder. But if you don't have one then you have to risk soldering them. I have built many power banks and found some that have really good boards, but some are crap, they can only put out a half an amp at 5 volts. If you go to an amp the voltage tanks and goes under 4.8 volts. All the ones I have can handle just over 2 amps and still maintain 5 volts. That is the mark of a good power bank.
Spot welders are very expensive; I certainly haven't got one and wouldn't get one due to the cost. Although soldering is not recommended, with a decent iron and careful soldering, it should be OK.
Personally I would get an 18650 battery holder with the spring contacts and just put up with the resistance of the holder. Though for other battery sizes (i.e. 26650) I would have to solder.
Could you recommend those DIY and good power banks?
One of them can be found at Banggood product number 939385 and the other was one that I buy on ebay, but I will need to find the link. DIY Kit Dual USB 5V 1A 2A Power Bank 18650 Battery Charger Box .
that soldering iron is badass!!!!!
I can't take this video seriously with this accent hahahahahahahaha lol
He has good videos with great information, but my god, getting past the accent is a struggle :P It's the upper inflection. Like he learned english from a valley girl.
Me tooooooo
Always use the thickest wire possible and connect to the largest connection pad...that will help with the current load to get 2.1A output.
You could use paper clips for the coil springs...just bend them to shape and solder together.
calm down it's only "2.1a" output lol that means the theoretical max current it will be pulling from the batteries is 3a divided that by 4 that's 0.75a per battery drain the wire he used is definitely adequate even if there was just one cell and pulling 3a at 4.2v which is a lithium ion's maximum safe voltage that is only 12.6w
I like your videos. So simple, yet so knowledgeable. "It's backfeeding". I was like, what?
Zatec is too good to be used as fire distinguishing 😂.
😂😂😂 fire extinguisher..👍👍👍
Danyku.. znáš tu pohádku o vybouchlý lipolce kterou lízla trafopájka??
What kind of soldering iron you used in this vedio... It's so nice. I would like to know how to make it.... So, plz. make a separate video on this.
It's a 1980's soldering gun. The power is 100VA. It has a built in transformer with 220V primary and about 2 or 3 turns of very heavy copper rail as a secondary. Simmilar soldering guns are produced to this day. Just look for a "soldering gun" instead of a "soldering iron".
The chip is meant to handle 1A charge/discharge, that's all i understood from a chinese site. I got one of these that fit 2x18650s and spring contacts. Seems to work fine and terminates charge at 4.17v (a bit premature, but ok) and it cuts out when the battery hits 3 volts and I understand that it's supposed to do that, but shouldn't it step down the current once it gets to that voltage and then turn off? It just turns off when reaching 3v and pushing out 1A so there's still a bit of capacity left in that cell.
What do I expect at a few bucks tho, right?
Great chanel! Very good analises and schematics explanations... Like said below by Milan Lazic, your videos are very educacional... Congratulations!!! Keep the good work.
I like ur videos very much i learn from them keep the good work. Yes another thing is if u can leave the schematic a little long so i can see them better . Thank u .
Great thanks from Poland.
A DVM on current between the battery and board will test connection point. If current spikes >1 amp on hooked up, it’s wrong.
output is low I guess it might also be due to only a single cell hooked up with a much too skinny wire.You absolutely should use nickel strips or at least a much beefier wire. and most of these cheapies are missing input capacitors which also limit the output current capability quite a lot.
Prečo nehovoríš česky?
(Prízvuk je fakt dosť počuť)
Angličtina dobrá ale vyslovnost moc ne. Ale ten přizvuk je fakt sranda😂
What is absolut balancing? Shouldent all cells have to be connectet separatly to the Board? Or do you need balancing only when cells are in series?
You don't have to connect the parallel cells to the board separately. You only need balancing for cells in series. The only thing you need to do with parallel cells is to make sure they are at the same voltage once before you solder them in parallel.
Well... you should make sure that all the cell are in the same voltage with each other, if it's not then the higher voltage cell will try to charge the lower voltage cell at a very high current when you put it in parallel and that might damage the cell if the differential are too high
I have a question, I have a few power banks with 18650 cells. Why when I charge them up 2 days later (without using them) they are not fully charged? Does the circuit use energy even though they are not connected to a load?
That looks like a neat unit, but it did need the fuses and balanced charge/capacity batterys to be slightly safer.
I would charge a battery on a good charger to full, then fit the battery in that case.
Next tap a volt meter to the battery direct and monitor the voltage while power is fed to the pcb for charging, if its higher than 4v and wont cease charging at that voltage, then the bin gets the pcb lol :-D.
Yes im a bit oversafe with exploding batterys :)
2:37 that thin GND trace are the fuse :)
The fuses and the (fireproof?) metal housing make it a bit safer, but I still keep all of my power banks away from easily flammable objects :). The best place for a powebank or a Li-Ion battery is a concrete tile, or at least a metal pot :).
are you the czech Big Clive?
Hi sir I had made the same power bank as u made in this video but problem is that it is charging but it is not showing the charging level after when I cut the Supply of charging .What is the problem?
is it better to use a fuse for each cell so if one fails you know exactly which one?
I have a similar Diy Powerbank, I only installed 1 fuse 3a, is that enough?
Up
The Ground pad size is OK but the copper trace is very thin. Will this even handle 1A??
It may be intended as a fuse :). Or the B- was ment as the battery negative connection, but there are some components omitted, so it goes nowhere. But anyway, if the trace blows, I will bypass it.
Hello sir, I have a similar DIY power bank but I faced a problem. I can charge the battery but cannot charge from the power bank. It just doesn't stay on for a while. It goes off as soon as I start it. If you have any idea or suggestions it would be helpful. Thank you
Today I went to a thrift store and I found a power bank that was slim. It is a lexman 10000mha. I think it has a lipo in it.
Too many Rrr on your tongue, Brow....😂
How do you make your Soldering rod?
What is the thing you put before put tin in the batteries? Thanks
bhai maine ye bana liya h par mera circuit board thoda diffrent h usme 3 USB port h par bhai ek problem h maine pcb board ke saath 5 18650 battery parallel me jodi to power button dabane par power bank chal jata h led indicator bhi chal jati h 3/4 ki power dikha raha h par m jaise hi load(mobile) connect karta hu power bank se 4-5 second baad power bank baand ho jata h fir doobara on karne par bhi aasa hi hota h fir maine single 18650 battery lekar bhi try kiya par same problem again bhai maine battery bhi check kar li h dead nhi h bhai plz batao kya kro plzzzzzz bhai reply karna plzzzzz
What fuses do you use what the amp rating of it?
USB voltage range is 4.7-5.3. It can't handle even 1 amp that's common problem in chinese powerbanks.
You are right ... but a big portion of the voltage droop may be because of the resistance of the USB contacts. The voltage does change a lot when you slightly move the USB plug.
I guess it might also be due to only a single cell hooked up with a much too skinny wire.You absolutely should use nickel strips or at least a much beefier wire. ans most of these cheapies are missing input capacitors which also limit the output current capability quite a lot.
CEzik Maj hii
I can't believe that no one pointed out that this lipo battery charger isn't actually a 4 cell BMS. I know this for a fact, because I own these boards. Furthermore, you'd be a total idiot to actually link 4 lipo cells in parallel with this, and it would be dangerous potentially. At the very least, they offer absolutely no balancing for charging the cells. So don't be dumb and buy this frivolous "DIY" junk that might burn your home down.
i would say 4.5-5.5V, but if the device (phone or anything) still can charge properly without being damaged the voltage doesn't matter!
Will it automatically stop charging if it reach full charge some like all batteries are reached 4.2 volts? I will buy this same powrrbank in lazada or shopee..i will just imitate your work
Can I buy this?
love your accent dude.
Will it work properly buy using 4 3000mah lg 18650 ? Does it stop charging after battery gets fully charged?
it's ok if I put the 2A fuse for the parallel batteries?
Hi Sir!
What is the value of a batteries we had used here.Because I'm also going to try this with my fake MI power bank of 10400mah
from where u buying this kit? can u pls share the link?
From where you have been buy this power bank kit
What is the power bank used in this video?
Video jsem našel náhodou na netu, ale okamžitě jsem dostal do držky od toho českého přízvuku. :D
Musia
Charlie zaa
Hello, can you kindly share with me links/brand of the best rosin/flux paste and dessoldering paste?
I also would like to dissoldered capacitor from motherboards. I have a soldering iron with a temperature of 450c but it seems to be not able to dissoldering....
Thanks a lot
lol
why are you singing?
Could you show me one of his songs?
CEzik Maj he is not a professional singer you moron
If he sings then you must heard of his song. Calm fucking down.
you don't have to be heard of someone singing to identify whether he is speaking or singing dumb ass
Great. 200 IQ instead of explaining sense of this comment I will fucking cry to someone who did not fully understood the meaning of it. Cry more africa needs water.
Can you suggest any cheep good usb volt and amp in out detector.
Hi there, I'm putting together 8x 18650 3.7v into a power bank. They're all 2200mah. That's ideal. However it is... fine to mix, for example, 4x 2200mah, 2x 2600mah n 2x 2800mah??? Appreciate your opinion..
Thats what I call REAL DIY powerbank! Puting batteries in spring loaders? Screw that!
Soldering Li-ion batteres with thin wires to some wacky fake xiaomi battery circuit and hoping it not to explode? Thats my taste!
Fun video and great accent as always. Greetings from Lithuania!
They will not explode, don`t worry, but they will ignite, and always when you`re not at home.
where do you buy the battery case?
i brought a solder less type, i would recommend to solder all batteries to the pcb. solder less diy powerbank gives issues like some batteries may loose contact that's why i have a very terrible charging and discharging rates. ive salvage a few laptop batteries, balance them before soldering then viola! these 18650's are still reliable during trip. 4x in parallel still gives around 4 to 5 phone charging cycles. depends if you just left them charging or while using
i love his talking accent
nice pover bank
Pekný "tuning" spajkovačky, to si tam tie spojovacie valčeky (alebo ak chceš vnútro z čokolády:) ) zalial mosadzou alebo? Inak dobre video
Ty vnitřky z čokolády sem k tomu normálně přiletoval cínem poté, co sem je zahřál bodovou svářečkou. Ono v tomhle místě se to neroztaví, není to tak horký jako smyčka.
ten upgrade budem musiet urobit aj ja lebo uz mam zodrate zavity na sroby..
Na jednej mám strhnutých závit aj ja ale druhá zatiaľ drží a tu používam. Inak vďaka za tip
A bit of a dodgy job there with the clear tape. The voltages you show were not that stable. It was enough under 5V under 1A load to be a bit worrying. I would have ended by saying don't buy it.
A part of this voltage droop is from USB contacts resistance. Just by moving the plug a bit, the voltage would change a lot.
That's a little worrying. Was it the test device or battery pack at fault?
I haven't seen much on this but how does that affect charging a device? Say a phone for example. If it accepts that lower voltage how much more slowly does it charge? My phone takes long some times. I wonder if this could be at fault.
It would make a nice video if you analyse this.
Where shops this kit
That thing u made is still using 1 battery
he put the rest in later
good work
You do understand that the battery pack board may very well be capable of 2.1amp output and inputs but your 110v charger may not be rated for more than 1 amp which could be why you got the amperage input reading that you did
Where that solder flux from? I saw it's chinese . Was it worth it? Is it rosin based?
It's a $ 0.70 rosin from Ebay. It works really well :).
DiodeGoneWild Thanks I really appreciate it.
Ten český prízvuk som hneď spoznal
What are those 2 reading voltage or amp that u inserted sir. I want to buy one for me thanks.
It's a USB voltmeter + current meter. Ebay is full of those :). They are about 2 USD. Look for something like "USB voltmeter current meter" Here is one:
www.ebay.com/itm/USB-Charger-Doctor-Current-Voltage-Charging-Detector-Battery-Voltmeter-Ammeter/182491636423?epid=624808200&hash=item2a7d5962c7:g:ZRcAAOSw32lYyjm8
Some of them have just 1 display, they are cheaper, but you have to wait for the display to change data (it toggles between current and voltage every 5 seconds).
Where can i get soldering iron like the one you use?
Lalmuanpuia Mizo ebay
can i attach a light with it
its rely good that it uses user provided cells but at this Pont just buy higher quality components and make a safe costum power bank
4:23 i haven't seen old school tinning like that since before i was old enough to hold a soldering iron lol. still, it works!
Why does it has a fake xiaomi logo on it and use the same as the old powerbank
I love your voice
I love it
Can 1 use 3 cell
What is module?
Dodgy heat shrinking, bloody Hell, Are you kidding me! Love your vidios
How to repair the on off part
great thanks guy
please provide a link to buy powerbank kit
link ?
Nice video. How do you call the "green object" you are using alongside the "keweisi" material ?
Do you mean the rosin?
Possibly. Don't know the name. But I am talking about the green device.
If I want to buy the same. What do I write in ebay ?
I'm sorry, you probably mean the USB test load :). The best way to find it on Ebay is to look for a USB resistor or USB Load.
Aap jo buttery use kiye isme uska kya nam hai jab mai ise buy karunga market se to kya bolunga
18650 lithium ion battery
Proč ještě není speciál 100k?
No matter how much I hate the accent, I find this video educative.
Link to buy it
1:20 The spring contacte high resistansssss
Satna me eska koi bhi saman nahi milpata hai hamare pas kayese uplavdh ho
i have seen some of your videos before .was interested in the chinese step up transformer .and i remembered that you had tested one in one of your videos.Problem was i forgot how your channel is called and spent some time browsing through YT electronics videos. Then i remembered you repairing an old soviet clock.Typed that in search and im here .Better subscribe now so i dont forget again your channel`s name :)
How much this battery
does it matter if you have springs that hold the battery since lithium cells have such low resistance anyway and the output is only max 2 amps to begin with? maybe that is a good thing?
This model is sold by the manufacturer Forever
Can this bank charge up my iphone, while at the same time the bank is charged up??
depends on the version i guess, i have the same "10400" power bank that cannot do that, somewhere else on the internet i found that some guy has appearantly the same powerbank which does have the 'pass through' functionality. So it's a guess when you order one i think..
LOT size ?
but it's too risky as it doesn't have monitoring for each battery separately
Solderiiiiing
Gnd and Bat - what's the difference? Why did you choose a GND port?
what kind of Accent is that But it Looks like Irish