"DIY" USB Power Bank (6x 18650 Li-Ion) - build, test, schematic
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- เผยแพร่เมื่อ 3 มี.ค. 2018
- How to build a DIY PowerBank with 6x 18650 Li-Ion cells using a kit. Ebay sellers call this Power Bank kit "DIY" because it comes with no batteries :). You have to put your own 18650 Li-Ion cells in it. For just $2.70 including shipping still not bad.
WARNING: Li-Ion batteries and power banks can catch fire or explode! Risk of fire, injury and burns. You do everything at your own risk and responsibility.
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I subbed for 2 reasons:
1: YOUR CAT
2. Learning more electronics knowledge.
Definitely great educational content.... on that note, I have two questions:
1. Wonder why they named these popular lithium batteries 18650, it can't be its maximum amperage capacity (there are too many digits in the model number).
2. Anyone knows how to reliably measure current amperage of a battery cell (not the factory capacity but its capacity without a load in it)?
Thanks.
@@BillAnt 1. Take out your ruler or vernier caliper, measure the battery and you will understand why it coded like that...
AFAIK, Li-ion / Li-Po not only in 18650, but came in many size such as 14500 (AA battery size) up to 26500 (D type battery size)
2. Buy or build a decent constant current load battery tester
@@BillAnt 1. 18mm x 65mm
2. you can't measure capacity without putting a load on it. you measure a known load over time, and when the battery voltage drops below a desired minimum, that's your useful ah capacity.
@@sspence65 < Ahh 1. 18mm x 650mm now makes sense, nice riddle. :)
Right, I figured that... but how does the battery manufacturer compute and labels the battery with say 3,000mah? What kind of load are they using? I can put a small load on and it would last for days, or a large one and it will run out in a few hours. So if I use a digital amp meter and simply touch the poles of the battery for a second, obviously the meter puts a load on the better internally. Is that a light or heavy load, and would the measurement be accurate as I described it? Sorry, just trying to learn.
@@BillAnt A typical 18650 battery is rated at 1C, so if it's nominally a 2500mah battery, put a 2.5 amp load on it, and see how long it lasts. It should last approximately 1h before the voltage drops below the minimum of 2.8v. With some testing, you can adjust the load current until you get 1h to 2.8v. Whatever that current is, that's your capacity. if it's 2a, then you have a 2000 mah battery. battery manufacturers don't have to guess, because they have a target mah they are designing for, so they just have to test each battery to make sure there is at least 2.8v left at the end of the hour.
I've been binge watching your videos. They're very good.
I like the use of pen and paper, I can easily understand your calculations.
Hope you eventually get sponsored and get a spot welder, or a newer soldering machine.
They sent you 2 butom covers because they broke the top one's. :) At least that's what I thought.
no because one is for the top and the other for the botyom
I have one of these, the top cover has the holes for the leds and a button for the torch, he has 2 bottom covers
True !
That would explain the plastic remains in the middle part
Nah someoane got 2 top covers with button holes and light guides 😂😂😂😂😂
Very nice video thank you ... how many amps that battery fuse can handle?
Great videos and your knowledge. Easy to understand english. Greetings from Poland. I'ts pleasure to watch.
What a great channel you have. I'm so glad I stumbled upon it.
I have watched a few of these and this is by far the clearest. No pointless music either.
Not enough cats.
Very nice. Have you found any with higher capacity output and/or faster input charging?
17:45 "Are you kidding me guys?!" I started laughing out loud. I feel his pain.
I subbed cause your multy talents is genuine,and your informative things you did
Is the board specific to the amps? Or can i use a 2500mah board for this project?. Does amperage mater with the type of board?.
Excellent video. Just what I was after as I just bought this on ebay. Very clear even with your accent and english obviously not your mother tongue. Well done buddy. Subscribed! Look forward to more content. Greatings from Wales UK.
Your soldering iron is creepy 😂😂
and I subbed you today coz I get entertainment and electrical knowledge at the same time
Great idea for the flash-light charger, I bought a PowerBank from a local shop today with 1 x 18650 cell in it at 1800 mAh It cost me £4.00 UK (about 6 US dollars), which is a lot less than a non re-chargeable battery for my flashlight and the 18650 cell was not soldered in :-)
Your cat always makes a appearance and it likes watching you at 7:54
hi, thanks for such another great video.
i have a question about at 19:56, is there any difference if you charge power bank with 5 v 2 A or 12 V 1 A how efficience change? for example i try this with my phone whenever I charge my Phone with 5 V 1.5A till %70 at night battery level down about %66, but whenever I charge with 9 V 1.8 A till %70 I saw %52 at morning.. is Fast charging really fill battery or just shows placebo effect us 🤔
The case you received has two rear portions. I have the same kit and it came with the front portion.
Must be some rocket scientist in the packaging/shipping department. xD
Hi Diode, are these DIY powerbanks available with Quick Charge 3.0? If you find one could you please test it?
hi where would you recommend buying the li ion cells i have 6 milwaukee v28 batteries that need re cell thank you
these powerbanks automatically increase the charge current with more cells?
good day sir, is it okay if i used 1pc tp4056 for 2 or more 18650 battery for my diy power bank?
Great job with all the best information and knowledge
Is it a safe power Bank..
I have a plethora of good 16650 cells 2700 mah to repurpose. this could be a useful build.
I will be making a couple large cap battery packs for my electric bicycle with the rest.
I have a question i have a powerbank 2100mah , and i have some others li-on batteries can i make 8400 mah with that board?
Nice explanation about schematic diagram
The issue with the volt/amp meter USB indicator is that it follows the standard 2.0 - hence only 0.5A w/o the data pins negotiation. Can it draw more than 0.5 with just resistors?
That soldering scared the heck out of me 😂
But what is the Ground pin for the chip? Plus the charger you are charging with shows Low voltage to begin with.
Okay I looked up the datasheets and it probably has a pad underneath that is connected with the Ground.
I have same volt current meter and the usb contacts are high resistance, certainly not gold plated. You can bend and spray them.
I have 3 of those same power banks, and I agree with the other comments that you received two "backs" rather than a front and a back.
That's why you had the odd bits of broken plastic in the grooves, those broke off from the original front cover. It was probably returned so they just stuck another "back" in the kit and sent it out again. I'd contact the seller you will be able to get a replacement kit.
Thanks for the very good video.
I got correct Top & Bottom covers.
Top cover has a pushbutton and a 4 Led window.
I used 6 x NCR18650A taken from an old laptop Battery Pack.
Was a very inexpensive and easy to buildup PowerBank kit.
Seems to work ok.
You really deserve to be respected
A very enjoyable 31.40 minutes on a Sunday afternoon! Thank you Diode! Awesome video as always!
This is where the clear heat shrink tubing I see in my assorted heat shrink sizes box would come in handy. It would allow you to see if the fuse is blown without having to get an ohm meter out to check it.
Awesome video, i guess the cat is watching for quality control of the product :))
At 2:00 there are unpopulated components U2, Q1, Q2, R1, R2. What would they have been for if fitted?
😺great engineer!!...deserves bonus 🐟
Whats the rating on the fuse you used? How many amps?
help :) I put 8 18560 on my romoss 20000mah sense 6p, just after i solden it about 5 second the wires started burning (gladly I manage to cut the wire immediately) but the ic tp5306 just blown out and the board just died.( I forgot to use fuse)
is the 8 18560 is too much for the circuit board? is it only capable fo 20,000mah below?
i do have same opower bank and all 6batterys are 2200ma and its output same around 1.5a on all 4ports....
for the IP5306, wouldnt it be easier to show the datasheet?
You should revisit these - they now have 16x18650 versions, no soldering (all spring terminal), PD-compatible. They're really good power banks if you put in decent batteries.
Does the case still block the LEDs and the buttons?
I am looking for a diy 18560 bank, with charging pass-through capebilities:
So while the bank is charged, the bank can charge my iphone.
Which type can do this?
Interesting video. I bought a diy kit on AliExpress but perhaps i should use a fuse. Im a beginner. I need some help. No info to be found on Google or TH-cam of this charging board. Model bls-m6y-1
Please upload purchase link in the description for usb voltage device
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?
looks like a wrong top cover. what a surprise. as always a TU .very enjoyable
I have a question, how are you supposed to see if the fuse is blown with the black tube over it?
Good day boss..what is the value of the fuse u use... please...
I'm glad to see I'm not the guy blowing on his solders to make it harden faster, people make fun of me at work when I do that 😂
Next time use kapton tape on positive side so you will feel more on the safe side when soldering the wire bro!!
I got an 10x cell case and put in some 3200 mAh Panasonic cells. The thing kicks butt. Quick Charge too! Not super sure if readout is accurate. I'm ordering some testing gear to check that out. Will probably build another one and in case of temporary grid down or a power outage I'm going to be alright while the lights are off.
I use those with solar panel on one side and LED array on other. they work good. I did not use fuses for batteries, so i will now use them, if you use them.
I bought a power bank that uses 18650's a while ago on Amazon, I have quite a few of those batteries so I'm trying to find uses from them. The bank was drawing current from the batteries even when off to the point of killing them. There actually was 0V on the batteries after just a few days of leaving the bank unused. I don't feel confident about trying another one of these...
Is it compitable for lipo battery?
I like how you heat your shrink wrap. Nice technique. I have 11200mAh it charges in 3-3.5 hours, 20000mAh should take 6-7 hours and should be charged with 2.1- 2.4 amps. My battery pack will not charge with less than 2.1 amps.
Can i ask you something? I have a weller soldering gun original from USA. one 75 watts and one 100watts plus 150watts 2in1 I have a problem with the soldering tip The tip copper is not very hot, sometimes when the soldering tip is changed the heat is too strong. And then After a few days the copper is not hot enough. At the time I changed it just before it was very hot and good to use and perform. My question is what is the perfect gauge of the copper tip of the soldering gun?
If the tip randomly changes its temperature, it's probably a poor contact. It's about 0.4V at 200A, so even a small resistance between the soldering gun and the tip wire has a massive effect.
@@DiodeGoneWild thank you for comments 🤟
can you make one with an sq12 camera attached and show how long willxit last?
Can I ask why did you separated the lines of the 6 batteries into 2 with 3 battery each? Is it for a good charging process?
He did It I think for safety reasons
You are so funny. Funny language +logic+ accent.
Does it have a charge balancer ?
Love this dudes personality lmao
i bought this, you have two back covers, the front has a button and led windows, also cool logo. i got a bag containing button and opaque LED diffusers. question; can i wire this to produce 12 volts? how? thanks
You can, but it would be incredibly reckless to do so -- since it could easily destroy things that you attach to it for a charge. Basically you are asking about the difference between connecting batteries in parallel vs. in series. With the cheaper types of these batteries, you really don't want to go above 3.7V. Only the high quality ones should be charged nearer to the 4.2 V. You'd basically need 3 batteries minimum. But you could do multiples of 3 to give more capacity -- by essentially mixing parallel and series connections. www.batterystuff.com/kb/articles/battery-articles/battery-bank-tutorial.html
can you change that chip to the tpo56 chip its a 2amp chip
Ah yes the good ol' solder gun. Very good for soldering. Heats up and cools down quickly... Also, is the brown stuff flux?
I love your videos :)
Really like your vid's! Please keep doing them. Noticed your bicycle at 7:57, I'd love it if you did a review of something electronic that goes on a bike. Thanks
This is probably the only bicycle accesory I have reviewed so far: th-cam.com/video/9pM_nPSdvXA/w-d-xo.html but I may take a look at some more in the future ;)
Nice job!
😎Purchased two in January from eBay, should come from China March 1st.
Guys Where Do You Get A Npn bc547 transistor? pls reply!
Hello. I have a question. Is it ok, safe to build a power bank with 4x 18650 batteries with different mahs? Like can I use 2 of 18650 with 2200mah n another 2 with 2600mah?
It's a parallel connection, so the capacities can be different. No problem :).
Great information!
What size fuses did you use?
A question please. I long thought that my laptop battery is dead for good. After all, it has been there for 11 years and for the last 4 year it didn't show any signs of life, just dead weight. Even the indicator on the task bar would always show a red cross. Curious of replacing the Li-ion 18650 and reviving the laptop battery, I have opened it and removed all the batteries. BTW, the soldering was very hard and I kind of ruined the scheme... BUT! What I found really intrigued me. I have taken out all 6 batteries and tested them. All of them show solid 4.15V charge! Could you please kindly explain to me what is going on?!
Vazgen Ghazaryan it would seem the BMS (small circuit board connected to the cells) has taken a crap. BMS (battery management system) is what controls the charging and balancing of all the cells, they're also quite prone to failure.
I have seen tighter usb a connectors for industrial use advertised somewheres, I can't remember where.
Why do you heat shrink the fuse?
Which fuses did you use?
are not gel type batteries smaller and more practical?
Thanks for this
Very nice video
I buy this chinese diy power bank case, it say 1 amp input, if i use 2 amp input adapter is it dangerous?
Yup, they sent you 2 bottom covers. The top one has the switch to activate the flashlight and battery status and a window to view the 4 blue status LEDs.
Good job continue
Thanks bro
which is minimum current with i can charge 2ah li ion batt
What is the rate of the fuses please?
very nice vedio , nice idea thank you sir.
Nice Video !
so ,is that chinese circuit board reliable,as safe to use ? how long will it last?
since i got one of these, i´m sure the seller give you 2 covers from the same way, and the cover where the leds and the switche are wasn´t given you in the kit.
Dude, you had me cracking up, "it snaps together, it fits... well it kind of fits... maybe not." Awesome video though, really clear steps and why you're doing each. I appreciate it!
What is the fuse ampere value??
you can create tutorial for spot welder using supercapacitors, it is super simple ;)
thanks for your vids and please make more
I need your help please in building your battery analyzer
can I replace IRLB8743 with irf 1404
and mc33171 with lm358
thanks again
LM358 would kind of work, but it doesn't have offset null, so the accuracy would be compromised. For this reason, mc33171 is better. Also TLC271 seems more suitable, althouhg I didn't test it. I think mc33171 is sold on Ebay. It is an old type, TLC271 may be a good replacement if you don't find any. IRF1404 MOSFET is not a LOGIC level mosfet, It may not turn ON well at 5V (minus the voltage drop of the OPAMP output). Better try to use some LOGIC level mosfet. Those are mostly rated 30V.
appreciated very much
my problem is I can only get what is on my local market but thanks anyway
Your problem is that you are too lazy to source the components that are needed. Surely it's logical to not waste everyone's time and go find a circuit that suits whatever random components you've decided to purchase?
really Im in a country where I cant order online we dont have a zip code and we cant make credit cards so dont judge recklessly
GarmnCX2 - I don't need to judge recklessly - so please cut the bullshit. Next you will tell us that you don't have internet in your country.
Wow I like this early thing. I think they gave you a used kit that was returned and the gave you two covers for the same side. They ripped you off.
Mike oliver what before 23h wtf
Yes, it really looks like two covers for the same side. It also looks like if somebody already tried to assemble it and snapped the pieces of the black plastic which remained in the green part. The pieces don't come from my covers. But It's weird because I think that this cheap chinese rubbish is never returned to the sellers...
Daniel pirkl, getting the video early is a perk of being a patron, a lot of people do it.
zx8401ztv ok
Bravo, merci !
Thanks friend
starting @15:53 I can hear you watch is tick-tock, "and probably" your doing it at midnight, thanks mate!
thank you very mutch
What gauge number of copper you use in soldering Gun?
I use 1.5mm2 wire in my 75VA and 100VA ones. Converted to AWG it's somewhere between 15 and 16.
I have bad experience with these DIY powerbanks. I've bought one Single Cell and it gave me only 0.5 amps. I requested an new one but when I connected it quickly shorted on me. Same thing happened with the first one after some time.