DIY - 12V Mini UPS
ฝัง
- เผยแพร่เมื่อ 29 พ.ย. 2019
- UPDATE - It's important for this project to use a better 2S BMS board with overcharge recovery voltage feature (link below).
A big Thank You to my patreons, especially my favorite - Kyle Shankin :)
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Schematic: i.imgur.com/PgwSa2K.jpg
Components list:
2S BMS with balance: s.click.aliexpress.com/e/_DeM...
plastic box 90x70x28mm: s.click.aliexpress.com/e/_AbIKYx
XL6009 boost converter: s.click.aliexpress.com/e/_DkU...
DC-005 5.5x2.1mm female connector: s.click.aliexpress.com/e/_A9UT4g
Small switch 10x15mm: s.click.aliexpress.com/e/_DnN...
5.5x2.1mm jack (male, 22AWG): s.click.aliexpress.com/e/_Dmq...
Small voltmeter: s.click.aliexpress.com/e/_DmD...
8.4V 2A charger: s.click.aliexpress.com/e/_DEG...
If you enjoy my videos, hit the Subscribe button! - วิทยาศาสตร์และเทคโนโลยี
this is a very practical project and anyone who suffers from random power outages should do this.
Very simple and straight forward! Great video as always :D
Really, a quality video, with nice humor.
I like that you give instructions for a safer and cleaner result.
Plus you give explanations of what you are doing and why. Regardless of building or buying such a mini UPS, the learning process and understanding of the details are valuable for other projects plus as a general knowledge too. Thanks.
It's not working for me. Before connecting to boost converter, bms output voltage is 11.68 v but as soon as I connect it to boost converter, voltage drops to 0.67 V. And so can't step up the output for 12v. But when I connect boost converter directly to battery output, it works, which is not advisable !!!
Please help with this
@@viralindia8951 if your bms output is 11.6v then you can easily use it as 12v. There's no need to use a boost converter. Also, there is a limit to the input voltage for the boost converter. You should check the specification.
Always informative, I learn something everytime I watch your videos...
Brilliant.. I've lost a lot of work due power outages of few seconds, but that's enough for the router to restart and I have to wait until the router reconnects. I definitely try to do something similar as your mini ups. Thanks for the good idea.
Hi Sorin. Transforming 12 V -> 220 V in a UPS and back 220 V -> 12 V in a router's power supply was always not a good idea to me. I always wanted to get (build) a pure 12 V device. This your video inspired me to do that. Thank you so much for this!
Please let me share some of my observations with other people working on such devices like me.
1) You can remove the step up converter from your schematic for most cases. The most of routers, network switches and others have buck converters inside. Usually they reduce voltage to 3.3 V to power the controller. This means you can power devices by even 5 V. Just try. You will be surprised. It looks like manufacturers choose power supplies having just economical reasons while devices can eat from 5 V to even 18 V.
2) Do not worry about back current into the power supply. It is usually less than 2 mA for most power supplies and is safe for them.
Thank you again for your videos.
Tested and approved as correct!
You must add a diode to the laptop plug from where the adapter is connected to prevent the electricity from going back towards the charger. Not only would the backup of UPS will increase but it would be safer this way.
my thoughts EXACTLY
What should the diode rating be?
@@AtlantaTerry anything would do a 1n4007 has a rating of about 700v.
While your at it could add an inline fuse that would blow before the ones on the battery did as those are harder to get to.
Sorry where would the diode be connected?
Very nice and useful build. You explained everything very clearly and also put a list of the required components in your video description. Very well done.
Very nice video, congratulations ! ("Precision Sensor" for temperature was perfect ! )
Nice build! Best part is it will protect the router in those short power blips that usually reset everything. Great job!
Yes. I need a small UPS for my Raspberry Pi system.
You have always inspired me to step out and try some of your projects. Thanks for the content. For the power flowing back to the adaptor, you could have a diode to prevent that, learnt that from a solar installation...
I like this design because you take extra care by A. putting the fuses directly on the battery as the BMS can fail and B. adding a capacitor on the output to smooth out the flow. Very nice. I'm going to make this, but with 3S.
I like this build. There are many applications you can use this for, like emergency lighting when the power goes out
Those would likely sell well on amazon many people would love them.
I like the precision temp sensor, also the cumbersome looking soldering iron... nice project to keep us occupied ... I think your cat looks as if it's been electrified, judging from the spiky fur... :)
I was actually looking for something like this, a portable or mini UPS for use with the Raspberry Pi. Thanks for making this tutorial, Sorin. :)
Nice one Sorin! Keep up this small useful projects and great content!
NIce! I just ordered a bunch of 18650's for another project, so that was great timing for me. Thanks!
Luv your projects and your humour.
Sure he has a sense of humour , I like it too.
The precision sensor, "between hot/cold."
Bravo omule! E ceva de munca si la ceea ce ai realizat cat si la clip, felicitari!
Nice compact solution and great explanations with a bit of humour thrown in :)
Sorin you're the best
i think i can make this because i just ordered some parts thanks sorin
I also made one for my router but with 3S config. It'll be more practical to do so because you don't have to change the 12V adapter.
Good video sir!
What step up transformer did you use?
Can you please help by giving a list of the components you use? I am looking into building one but don't know where to get the components online.
@@jithinramesh3022 The two main places that people source parts for electronics projects are AliExpress and Banggood. They're both Chinese websites which allow you to essentially get the parts for the cheapest price and they usually have global free shipping. I would personally recommend Banggood because I usually get my items within a week and a half when ordering from there vs AliExpress which can take weeks but usually not over a month. I live in New Zealand which means components ordered from these sites get here a bit faster then other parts of the world. As for your question regarding the components that Aji used I might recommend trying a premade board that essentially does everything the BMS in the video does in a single package. Something like this: www.banggood.com/18650-Lithium-Battery-Boost-Module-12V-Charging-UPS-Uninterrupted-Protection-Integrated-Board-With-C-p-1280431.html?rmmds=search&cur_warehouse=CN
@@ChillarPunter with 3S battery and 12V router no step up or step down converters are needed. Router will still work, even when supplied with 9V (3S battery at 1% charge)
For 3s, the Charging voltage should be greater than 12.6. How did you get this voltage with 12V adapter without using step up convertor?
Very well presented and explained. Thank you for sharing this.
This is the first ever channel that I have intentionally subscribed. Liked it and much helpful.
Nice vid.
I recently started using TP4056 Chrg/Prot boards with a long 22 gauge silicone electrical wire to help charge solar lights with 18650's when sunlight isnt good enough. With how well it works it doesn't make sense why big solar lights aren't designed with this feature built in
I love the "wearing protective goggles with smug face" part.. Funny
Very nicely presented. Thank you for explaining so well. 😊👍
Thank you. Great work, can't wait for next project.
Oh. Thank God i found this on my feed.
Interested in your temperature measurement instrument.
Very clean and nice looking project.
Very nice, I was designing exactly such a thing for my rooter today and there pops up your video in my recommendations! In my design, I also added a constant current, constant voltage buck converter and set the current limit recommended on the data sheet of the 18650.
hi. if you used a buck converter, then it means you have a bigger battery pack. but the current limit of the buck converter is for the converter output, not the converter input (the battery pack). the input current and output current of the converter differs, depending on the load, converter efficiency and battery pack. there is nothing wrong with it, just don't set a lower output current than your router needs.
I have the battery pack charging FROM the buck converter output, that way when the battery is flat, it charges at constant current (1.65A for my cells... they're 3500mAh so ~0.5C charge) up until the preset voltage is reached for full charge, then it switches to constant voltage mode and then the current drops quickly down. I still use a boost converter on the battery pack to the UPS output to keep the voltage constant as the battery voltage drops. I then use a much higher voltage power supply (24V, ~1A, 25W) because its slightly cheaper and also I get better efficiency stepping down from higher voltages with the buck (>90%). The buck isn't strictly necessary and your design is elegant.
I love videos that give good instruction. That's the reason I've subscribed to you keep up the good work.
Video: How much safety you need?
Sorin: YES
Too much protection than any oth product which is made officially 🤣😅😆
If you want better efficiency, remove the step up converter and add one more battery in series. The router should be able to operate from about 9V up to 14V. Li-ion batteries work 3.5V - 4.2V, which gives you 10.5V - 12.6V power supply.
No, my router works 11v-18v. Although rated at 12v. It doesn't work anything less than 11v. So step up is mandatory. Schottky diodes are also required.
really great project
Just build mine... I thought I burn out my BMS when I saw Sparks while soldering but it works thanks for your video.
8:00 you should also make a knot with the power cord inside the case, that way if you pull on the power cord, it wont pull the electronics out and damage the soldering points
ok
That or one of those crimping type strain reliefs that just snaps into the hole a lot of appliances use. If space is the issue as in that small case one of those snap in might take less room.
Friend, Sorin, thanks for an excellent tutorial. (I have subscribed) I like that your presentation was well photographed. Everything you showed was easy to understand. (even a dummy such as myself) One suggestion, perhaps go a bit slower. Thanks so much, looking forward to more of your presentations.
Nice project. I might have to make one of these in the future.
great video Sorin, always enjoy them.
it inspires me to build more :)
Thank you Sorin for sharing this video, really informative , I have some notes regarding :1-You can use a battery holder for the 18650 you using in case you need to replace the batteries it will more easy rather than doing the soldering job again.2-You can use a protection schottky diode on the input side link SS54 so that the voltage can flow in one direction & not back to the charger in case of utility power outage
3-you can add a switch yo turn of the built in voltage meter to preserve some energy in case of long term power outages.4-what about low battery , should we get any indication when the battery is going low , it the UPS turn it self off in that case ?5-also what about short circuit protection on the output side ?
Thank you.
hi. 1- yes you can use a battery holder, but I prefer to solder the cells. I test all the cells before I use them, so very rarely I had problems and need to replace cells. I prefer soldering the cells, because with battery holders there may be an imperfect contact in time between the cell and the holder, also the plastic enclosure needs to be bigger. 2- a diode will block the current from one direction, but it also has a small voltage drop. so the charging voltage will drop below 8V, which is not enough to charge the cells. the charger LED is using only a few mA, it doesn't make any difference in the 6 hours working time of the UPS. it remains like this for now. 3- the voltmeter display is using 17-20 mA, depending on how many LEDs are lit. so yes you can save a little energy by disconnecting it. you can add a capacitor and a microswitch to the voltmeter. when you press the microswitch for 1-2 sec, the capacitor is charged and the voltmeter will remain on for a few sec, enough to read the value. 4- the BMS has over discharge protection at around 2.9V per cell. you can check the UPS voltmeter, when the voltage decreases to under 6V, the cells are almost discharged and it will shortly turn off. I did this test in the video. 5- this step up converter doesn't have short circuit protection, so you can add another fuse on the positive output terminal. or you can use another (bigger) type of step up converter, with short circuit protection included.
I really love this channel..
verry imformative,and funny...
ohhh,,,,!!
it has ads now,,,,thats it sorin,,, 🙌
Just FANTASTIC, great job !
I learned a lot with this YT video.. esp the BMS system and how it works. Great job. Thanks
Great explanation! Thank you, very easy to understand the operation of 18650 cells on smaller scale. I'm trying something similar before going larger, these things actually are alittle scary and should be treated with caution. One thing I don't understand, does the bms monitor each individual cell ? Thanks great job and that was an important tip selecting good vs bad batteries from the start. 👍👍
hi. yes the BMS monitors the voltage of each cell, that's why it has a lead between the cells. it's the yellow wire in my schematic.
Thanks for the video. Can you please advise what changes I would need to make if I want to use 12V power supply? Thanks for your answer.
with exactly same build you need one more step down DC to DC board to lower 12V from power supply to 8.5-8.4V to charge the whole mini UPS, all the rest stays the same.
@@baniakrulez Thanks. Will do.
Today is a good day because sorin uploaded another informative diy video
Sorin, love your videos. Love your choice of juice. Love your awesome accent 😂👍🇨🇦
Try for the next project a spot welding device solution for nickel strip .
Those plastic bit in the case are called "stand offs". They "stand off" a pcb from the case. Normally used on pic's so the motherboard doesn't short against the case
thanks for clarifying this. I know what they are for, just didn't know how to call them in English.
Watched all your Videos. Thanks Sorin. Nice Chanel with interesting DIY electronic projects. Please do more in the future. Love your accent too :)
Thank you very much for your very clear explanation en humor in the video. :) I love your videos. Greetings from the Netherlands
Sorin, bro, are you russian? Its nice that this video of your's is in english. Congrats bro!!!
No, he's Romanian.
@@George-sp1sr
Aaahhh i see...
Hey , you forgotten 1 diode at input of BMS, that will help to reduce extra current drawn by charger LED during power fails
yes a diode will block the current in the reverse direction, but it also has a forward voltage drop of around 0.9V so the charging voltage will drop under 8V, which is not enough to charge the cells. the charger LED is using only a few mA, it doesn't make any difference in the 6 hours working time of the UPS.
"LED": Light Emitting DIODE.
So why would you need a second diode?
@@AtlantaTerry simp
Thanks for making this useful video. Just what I needed.
Hello Sorin, Thank you for this video and it was helpful for me to provide a solution to the unexpected power outage of my wifi router. All the best and appreciate you.!!
Why not make it out of 3S for 12.6v fully charged and 9v fully discharged? Then you would not need the boost converter. Your fiber router would probably cut off around 10v or less than that.
I wanted to have a very stable 12V output. other people will probably make it for some other devices that may need a stable voltage. this is possible only with a dc converter. it will last longer with a step up converter, because it's using the entire battery capacity. and I wanted it to be small, with 3 cells it needs a bigger plastic enclosure.
Te rog fa un video in care arati cum ai facut ampermetrul!!
Este doar un volt/ampermetru pus intr-o carcasa. :)
subbed because of this vid. thanks bud! I'm looking forward to making this.
there is useful information in the details of discussion , thanks sorin
+1 for ur humour and the smug face 😂 (1:10)
Why you did not use your previous DIY charger to test the batteries?? maybe because it do not have a screen showing capacity of batteries? So time to make a v.2.0!! , DIY Charger and Tester Capacity for 18650 bats.
Look ZB2L3 Battery Capacity Tester, not a bad module 😉
And look for us a DIY spot welding machine please, most uses microWave transformer, but a bit hard for simple hobbist... maybe with capacitor?? you will figure something it out 😊
Oi! ... Who are you calling elderly?
:)
E-Nerd! Dude? Very happy I ran across your channel. Excellent demo and build. Cheers!
Nice Project Sorin! Your willing is amazing! Thank you for sharing!! Greetings
my router has a built-in batery kkkk
that's nice
I love it your projects 👍very useful,, thanks bro 💐
Cool, might have to build one of these. I usually use a 10000mah powerbank, which can last around 7 hours running an adsl modem router with wireless.
Superb! crisp and precise, Subscribed!
amazing project- good job.
Thank you for instructions and video. Good luck 😉👍
Nice vídeo. It was very special to see this 💡 idea. Thank you.
You really make soo amazing videos , like i can use all your projects in my daily life and seriously solved my issues🎉❤😊🙈
Cool video dude. Wish more people would make videos like these.
Subscribed for the quality of humour and of course the quality of content 😎
Exactly what I was looking for! Thanks...
Another Great Idea from Sorin!!!
It is shame that TH-cam algorithm does not recommend such good content
Cute!!! I like this little ups! you earned a sub. I need to put a meter on my router and see how much it draws, and build a mini ups to suit (I have 4 18650 Samsung cells here waiting for a project!)
Great project, greater explanation, thanks
Very good and respect to your Li Ion Information. Very good also for safety! You should use a metal case for absolutely safety
Truthfully the first video i liked, subscribed and shared
Very nicely made and explained video. Subscribed. Please keep it up
You are very creative and talented, God bless you.
High quality content right there it's rare to see those
Sorin, you are the best!
Thanks for the info.I was trying to built a mini pc that could run on battery and a power brick
Really your expectations is good thank you sir 🙏
Tocmai ce am trecut si eu la fibra optica si am si o gramada de celule si bms-uri, deci am ce face in weeknd! Multam de idee si cum ar spune americanu' : keep up the good work !
Dramatically fantastic. Thanks
Thanks for the idea, this is very useful i will make one.
Very nice tutorial, and a good basis for other mini ups projects like an emergency cell phone charger. Sure you got those mini power banks they sell, but those are way overpriced. Thank you.
What a brilliant video. Very useful.
I don't have knowledge in this domain but damn.. your explainations are very good! Thanks!
Great video as usual! Also, I've just realized I haven't had the notifications turned on for your channel... What a shame! Fixed now! :)
This guy cracks me up...He is a genius...Great info...Wish I had his knowledge and brains...!!!
Great video! This is very helpful.
Your project very good and your cat looks cute
Great personality!! Nice project too!
cool little build!
Great diy product build 😀👍