WiFi Router UPS -DIY | Router UPS with 5 hours Backup | DIY community

[@DIYCommunity]

Make your own UPS and enjoy uninterrupted connectivity :-)

[@hmcinematics2761]

How it will coast 500rs Bro ?? The Only Batteries cost 900.. Please give a cheaper solution available Online in 540 🙂

[@DIYCommunity]

Hi, Try for getting an old laptop Battery which will cost you 60rs Where you get 4 to 6 good and original cells. Test each cells and use only good cells to form a battery. This will be the cheaper solution. Hope this helps!

[@DIYCommunity]

It depends on what product you use. If you are looking for a cheaper solution then visit a cycle spare part shop and you will find in all ranges. You can do from 400rs.

[@rick4973]

@@DIYCommunity bro mujhe ek karke do please

[@somaenterprises9161]

What us the use xl 6009 dc to dc step up

[@DilrukKarunanayake]

Update: I've made the UPS according to this this specs. HOWEVER, I NOTED THE BMS DOES NOT FULLY CHARGE THE BATTERIES EVEN WHEN THE INPUT VOLTAGE IS SET AT 12.7V. I've tested this multiple times with 2 routers. Router 1: a 12V 0.5A which lasted 2.5 hours with 6 1800mAh cells - (2 sets of 3 cells connected in series)(this was with the battery's first charge/manifacture's charge) after the batteries were fully drained, recharges the pack through the BMS with a power adapter. The charge lasted only 45 min. The 3 cells were at different voltages after the BMS cut off the supply to the router. Initially charged it with a 12V 1A supply and thought the input current was not sufficient, therefore charged it with 12V 2A supply. Still got around 45 min or less. So to double check, I've charged the same batteries with a 18650 battery charger. Inserted the batteries to the UPS and tried it with a 12V 1A router. The UPS lasted 3 hours and 34 min. This was just with 3 18650 1800mAh cells. I've concluded that it's better to use individual BMS's to charge each cell to get the full potential. Hope this will help anyone who is planning to build this UPS

[@shubhamsawant5129]

Was facing similar kind of issue.. finally found that there was no proper contact even after soldering. Checked with multimeter. Happens sometimes in case of li ion battery soldering

[@pankajubhale4161]

I faced the same issue too, if we use the same adapter 12v 2 A, the voltage dropped 0.6v at input due to input diode, hence it is 11.4 v to bms, bms needs voltage range atleast 12.6v so that each battery charged with 4.2v which is optimal. Bms has property to shut down output power when battery voltage decreases to 9v. Hence we get less backup due to battery voltage range 9v to 11.4v. hence it is necessary to have 12.6v alteast to input of bms. If we remove input diode then again there is issue that input led light and indicator light of adapter become ON even there is no input power supply because battery is used by them in abscence of diode. Solutions is to have 13v customised input adapter to power the ups with input diode of 3 A if your router works at 2A. I tried i got best results in back up, atleast 2.5 hrs with 2 A router with three 18650 batteries.

[@technicalsohil4063]

@@pankajubhale4161 any solution found to replace diode near input section?

[@technicalsohil4063]

@@pankajubhale4161 how to make 13 volt supply?

[@bishalsen230]

You kiddin me? You cant get 3 hours of backup just with 3, 1800maH batteries in series, the voltage will increase to around 12V, but the capacity will remain 1800maH.. If You're using just one 12V 1A Router, that's 12watts per hour, You should expect to get no more than 45 mnts (in fact around 30mnts) How did you get 3+ hours!

[@vijayamohansivalingam5587]

very nice idea of creating though waste/unused products.

[@patideb]

The boost converter is not needed in this circuit design. A 12v router has a working voltage range of 10.5v to 14v. The fluctuation can easily be managed by a 16v 4700uF capacitor

[@HistoriCutsHub]

i was also wonderin what is the use of the boost conv until you confirmed what im initially thinking.

[@papaikarmakar84]

Boost converter is used for constant voltage & constant current

[@saurabhdusane2165]

​@@papaikarmakar84 wouldnt a simple voltage regulator IC work? Like 7809 or 7812 ?

[@papaikarmakar84]

@@saurabhdusane2165 voltage regulator ics are used when you need to drop down the voltage. It can not work as voltage booster. But yes if there is voltage fluctuation then it comes into play.

[@papaikarmakar84]

@stop following me exactly 💯

[@techrama9642]

05:00 That diode at the the bottom right corner keep provide power from batteries even you turn off the black switch or 12 volt adaptor supply. Because that diode directly connected from bms positive and getting negetive from Buck converter. I have to unplug the 12 output cable to turn off my router any solution??

[@sksdiy]

The problem with this method is.. Battery is only charged to 70-80%.. Because 12 adaptor outputs about 11.7-11.9 v at most so 11.7/3 =3.9v per cell... But li ion can be charged to 4.2v per cell.. So.. Yeah.. I am using 2s 3p configuration with relay.. But sometimes there is rebooting even if caps are used..

[@shubhamsawant5129]

The diode with drop 0.6v from adapter so adapter will actually supply 11.4v to router. The boost converter is set to 12v so it will always draw from boost module and not adapter. To use adapter module voltage must be 11.3v or less which may cause problem sometimes in router function. You need a relay switch over circuit to remove diodes Edit: I made it using 4 Li ion battery (2600 mah) it gives me 6 hrs of backup for my Airtel 5g xtreme router Now I used 8 batteries and backup is almost 11 hours.. (enough for my work from home😌)

[@sashi_88]

Yes

[@trishalmandrik1295]

Hey! Can you share the circuit diagram.

[@shubhamsawant5129]

@@trishalmandrik1295 sorry I don't have diagram.. i designed with trial and error. You may find many voltage based switching circuit diagram on internet. I suggest you to use opamp ani 11v zener for reference.

[@technicalsohil4063]

@@shubhamsawant5129 please make circuit diagram and send me on instagram.. i need your work

[@technicalsohil4063]

@@shubhamsawant5129 and which relay switch u have used?

[@fallenangel2213]

Thnk u. Its been a long time Im looking for this . Very useful and diagram is very clear.

[@DIYCommunity]

You are welcome

[@simeonerasmus]

Well dome my guy really good video. Here is South Africa we struggle with frequent power outages and this will really help. Gonna build it payday

[@DIYCommunity]

Thanks for your comment. Yes this will really help in that situation. All the best my friend!

[@patideb]

@diy community The main flaw in this circuit is charging the battery after a discharge cycle. Because 3s lithium battery has a full charge voltage of 12.6v but router adapter has a close circuit voltage of 11.8v or below if that's a low amp adapter. That can never charge your battery fully and the battery will have half of its rated capacity while it backs up power.. I watched many people post video about router ups but very few of them address this issue in their design.

[@DIYCommunity]

Hi, I have replied for many comments saying that this will not charge the battery to full. And replace power supply by 12.6 to 12.8v to charge the battery to its full. Anyways thanks for your comments. Appreciated!

[@Amit24981]

Just modify charger by changing feedback of TL431 in charger to 12.8-13. that will do.

[@shailesh0813]

​@@Amit24981any tutorial video?

[@shailesh0813]

Facing the same issue. I wish I had read comments before implementing 😢

[@alamir2378]

@@shailesh0813 can you supply a 12.6v input?

[@mohitkoli7097]

5:25 I have a question if you are using the boost converter why did you connect the battery positive, directly to output, ???

[@CancunManny]

I learned how to make UPS watching youtube videos, and now I come to find out many of these videos are WRONG. His whole setup seems to be wrong. Like you mentioned the boost converter is attached to the "steady" 12v already coming in. Also he doesn't have 12.6 V which is needed to properly charge the batteries. Understandable, but I haven't yet found a good electronics forum where real experts can share info. The forums I post on I usually get told my project is all wrong, but they don't give me details on exactly what I should use.

[@mohitkoli7097]

​​@@CancunMannyNah don't worry it can work you just need to remove the directly connected battery positive to the output and use like a 13 volt 3 ampere adaptor that's how I made my ups and the BMS will handle 1 or 2 extra volt just fine I think 🤔

[@CancunManny]

@@mohitkoli7097 I am no expert by any means, but the so called experts at different electronics forums say a BMS is not a Li Ion charging circuit. It seems to safely charge a 3S battery pack you need a charging circuit to provide CV (constant volts at 12.6) and a CC (Constant Current), you also need a BMS. I want to emphasize I am not an expert! I've seen videos on YT where it shows BMS working correctly even when you use an extra or two volts. If i am understanding correctly many set ups will "work", but not work correctly. This means you could kill your battery much faster than expected or worse yet have it explode and cause a fire.

[@mohitkoli7097]

​@@CancunManny Nah I don't worry it will work just fine just fine with the instructions I gave above ☝️ I get what you're trying to say it is safer to charge it that way👍 I'm just saying it's a DIY project you can do it and learn from it :-) its just for fun it doesn't need to be that exact voltage it is flexible it can charge at 13 or even higher volt I charge my 3S pack with 15 volt for like 3 years and it works just fine 🫠 whoever reading this please charge it 12.6 volts, it work for me but it can't work for everybody Maybe you have a different BMS which exactly needs the 12.6 volt so just to be safe 🙂 and yes set the voltage on the boost or buck converter to 12 or 12.1 volt and check the positive and negative wire ( or else you will get I fullyy cooked to perfection🎇🔥👾{ router☠️} ) If you do all the things correctly you got a working Mini UPS 😊

[@mohitkoli7097]

@@CancunManny we are really writing a book over here I think I'll stop replying 😅😂

[@praveenraveendran2794]

I have made it.. working perfectly.. Thanks bro

[@DIYCommunity]

Thanks for confirming !

[@ziakhan1317]

your Router Voltage and Ampere? or kitny hours tak work karta hy same ups?

[@yashchinchore4211]

Bro is it still working ?.....If yes, then how reliable is it

[@praveenraveendran2794]

@@yashchinchore4211 still working fine

[@aladdinalzribi7227]

How many hours do you keep working

[@Blackkingplayzofficial13]

Bhai jo apne end mai ek diode or ek resistor extra lagaya hai wo hum ne b lagana hai plz reply

[@paraxo37]

Why do you need XL6009 module? 3S BMS board already has 12V output.

[@DIYCommunity]

Thanks for asking my friend. When ups is running (no electricity) for longer time the voltage reduces slowly. To avoid this I have used a boost converter which always maintains the output voltage.

[@CancunManny]

BMS don't have a constant current or constant voltage as output. When batteries fully charged it should output 12.6v, as batteries start to go low, voltage will get closer to 9v before BMS shuts off. The boost converter is used to keep the output steady at 12v. In fact I think the booster he is using has a different name. Step down gets you from higher V to lower Vs, Step up gets you from lower Vs to higher vs, then there is a 3rd type that keeps output Vs steady even if you supply more or less Vs. In this example, when batteries fully charged output should be 12.6v, but if you only need 12v you need to step down from 12.6 to 12v. But when batteries go under 4v each, then you need to step up to 12v.

[@jyotirani8232]

xl6009 kafi heat karta hai, kya ye normal hai?

[@jyotirani8232]

Please reply

[@DIYCommunity]

Hi, if the load connected is drawing more then 2 amp it will start heating. Do you see this from beginning ? or now after few days of usage. If the heat is bearable to touch then no need to do anything.

[@jyotirani8232]

@@DIYCommunity from starting I am facing the issue. now xl6009 not working, only 3s BMS charging directly from input 12v, and due to that battery is not fully charged. I am using 20A BMS. what should be the exact output voltage of xl6009. I used 13V so that the 3s battery pack can charge easily.

[@shubhamsawant5129]

@@jyotirani8232 you don't need 3s bms, you need 2s bms and use boost converter. I made it more than a year ago, it's still giving me 11+ hrs.

[@oraclebjj]

Rajesh you my friend are my buddy now. Thank you for that great video. Well documented, composed, edited, captioned. This is something I’ve looked for some time. Looks like s fun project for a novice like me. I haven’t read the description section yet but if your total cost isn’t there could you share what that would look like? Weighing the cost/time vs buying a ups. Time is precious of course. Will it be safe for other small devices like Google home mini?

[@DIYCommunity]

Hi OracleLife, Thanks for your lovely comments! This UPS will cost you rs500/- with old laptop batteries. If you are going with new the. Add rs400/- + battery cost. UPS selling at e-commerce website ranges from rs1400/-. Yes you can use it fir google mine, Alexa or home security camera by setting up the output voltage as described on it. Hope this helps!

[@CryptoboyAB]

please mnake a 9v + 12v ups

[@DIYCommunity]

The one which we see in video is for 12v. Use a step down converter at output and set the voltage from 5v to 12v according to your need.

[@SONGMOVIE-nv9wt]

Explained well exlenat video bro😘♥️

[@rohanpatil1122]

Great Job 👏👏👏

[@suguravi2965]

working fine for me. nice video 😎😎😎

[@ziakhan1317]

apka router kitny voltage and ampere ka hy?

[@Uniqueshreee]

Such a informative and great video you made, it is now very to make this wonderful UPS, I have also the same NOKIA router, just a small question, is Power gets disconnected single time whenever electricity goes OFF...?

[@DIYCommunity]

Hi, This will give an uninterrupted supply. So it does not disconnect while main power is off or when power resumes back.

[@josealfredfernandes]

@@DIYCommunity Hey. Kindly get in touch with me. My c0nt@ct details are in my bio. This is urgent. I seek to hire you to build a online ups 12v 12.5A 150w DC-DC for me. 2days backup. Also, need more 2 ups, 12v 2a 2 days backup. 0ms changeover. Etc.

[@josealfredfernandes]

@@DIYCommunity budget 10000, I can go above that too, I need this urgently. Kindly get back to me.

[@DIYCommunity]

Hi, I recommend you to go for a 200w inverter connected to a 12v 40ah inverter battery. The cost would come around 8k. You can connect any load upto 200w and that gives more backup. If you have space install a 100watt solar panel for charging the battery. There you use some renewable source also.

[@josealfredfernandes]

@@DIYCommunity alright

[@athulkrishna.k9295]

Bro can i use 3S 10A Bms board dor 6 nos 2200mah batteries

[@DIYCommunity]

Yes bro you can use. In total it is going to be 4400mah(connect 2 cells each in parallel and then 3 sets in series). Anyways less than bms capacity

[@ghanshyam6567]

BROTHER I MADE IT AND ITS WORKS WELL WITH JIO FIBER 2.5AMP THANK YOU...BUT BMS P+ TO OUTPUT JACK DIODE IS WRONG CONNECTED IN SCHEMATIC IT SHOULD BE CONNECTED DIRECT TO IN JACK INSTEAD OF P+

[@ghanshyam6567]

bcs current flow from p+ to out jack without sitch on

[@DIYCommunity]

Hi, Thanks for trying this out. And yes the bypass line needs to be connected before the diode and direct to input jack. I have replied this to one of viewer earlier and now I will pin this message so that everyone who tries will avoid doing this mistake.

[@upulranaweera3597]

@@DIYCommunity why don't you add the revised circuit diagram, not everyone is electronic expert. I have made your project according to the circuit diagram you have included in the video and my project is not successful. My mini UPS retains power only for less than 5 minutes though the batteries have not run down. I am not sure what is the issue. Though not an expert, I too suspected the bypass and the diode. Could you please add a link to the correct diagram please. that would be very helpful. Please.

[@DIYCommunity]

Hi, The changes i explained for few members is to isolate the battery line with backup line. And even without this is should work in same way. If you are using this ups for a 12v router and getting a lesser backup then you can remove the boost converter and try running it directly with battery bms. By doing this we can detect any problems with boost converter or bms. In Most cases if the boost converter is not capable of delivering a constant current then BMS gets into sleep mode. I assume your setup is also having similar issue. Try the above changes and let me know.

[@vijaydas9747]

how much it costs ready made available cheap

[@albertantony20]

Worked perfectly thanks a lot brother

[@DIYCommunity]

Welcome brother. Thanks for confirming.

[@LiegeMaximo]

saman kahan se mila vro

[@Hedgehog_DIY]

How do i get 9v 0.6a or 1a pls tell me and also 12v... Should i use voltage regulator ic ??or another booster

[@wasirahman]

Hi, I want to use an external charger like Imax b6 instead of the BMS board. What do you suggest to use as a bypass when router adapter kicks in?

[@johnricher133]

this depends on battery capacity: single 3.7v li-ion battery has 3500mah (or better), 12v router consuming, 6 battery, 0.85 efficiency, find the run time? total battery capacity: 6 battery * 3500mah = 21,000mah total battery energy: 3.7v * 21,000mah = 77,700mah convert from mah to wh: 77,700mah / 1000 = 77.7wh efficiency: 0.85 * 77.7wh = 66.045wh run time in hour: 66.045wh / 12w = 5.50375h

[@pardhasaradhi9278]

Why are you added extra resistor in both sides That is not in Circuit diagram ?? What is the resistor capacity ? Pls reply 6:55

[@DIYCommunity]

Resistors added to limit current going to led. As I did not have a single 680ohm i clubbed 2 resistors to make the value. You can add one between 680ohm to 1k. Hope this clears your question.

[@vishaljain7148]

Wow supeb video , i will give it a try .

[@ahamednusry2516]

Brother I did it all perfectly but when I test the battery voltage by P+ and P- in the BMS board it shows nothing. But separately all batteries show the voltage of each and added battery. Can I know the reason

[@DIYCommunity]

Hi, there may be 2 reasons. 1. BMS goes into sleep mode when there is a fault detected. Try feeding a 12v in P+ and P- to wake it up. 2. Check connections or Faulty BMS Let me know after trying this

[@ItzKeshav74]

Hello. I just wanted to ask that would it would if i excatly follow your video steps cause in comments there are many things I am not able to understand like bms . my wifi is 2Amp and 12 V . and power bank is 5V and 2.4 amps Please reply I have ordered the thing you suggested Thanks

[@rabaserongyoungman2836]

Hi i have a question, i am out of the other items, can i not put the boost converter and the leds? I just want like a battery pack switch to it when power is out. Thanks

[@DIYCommunity]

Hi, yes you can do that. Ensure you battery pack output voltage is same as router voltage specs.

[@kalekamal374]

I Can't get this 680 Ohm can I use other instead of 680 Ohm? If so, which one to use?

[@DIYCommunity]

Hi, you can use 1K ohm resistor instead.

[@tmmedia7]

Hi It was excellent for me, Can u plz tell me that can we use 9v or 5 adapter for this mini ups input for charging the batteries or we have to use proper 12v adapter?

[@DIYCommunity]

Hi, For proper charging you need to use 12.6v adaptor. If you prefer to use a 9v or a 5v input you have to use a constant current step up converter. This can be a solution but costlier too when compared to a 12v adaptor.

[@tmmedia7]

Ok thanks, i search alot about making mini ups, but ur video was unique and easy, i made my own ups by ur video, would u plz send me ur whats app no ?

[@DIYCommunity]

Glad to know. You can connect with me over telegram "DIY Community".

[@bmsth6333]

Hi very good video. But i have a question can i use 20A bms for this???

[@DIYCommunity]

Hi Yes you can.

[@sj4433u]

i guess there is a mistake in diagram image....... from bms positive there is a wire directly connected to out port with 4007 diode ......please check and let me kno is it correct or mistake

[@BiBIN0619]

I made my ups exactly like in this video and i am only getting 45 mins back up and when its fully drain out it will never turn on itself when the power came back the leds are blinking till i off and on the switch in the ups box. Is there any solution for this problem

[@dineshprajapat9316]

Xl6009 Over heating Issues Means

[@dineshprajapat9316]

Plz reply

[@DIYCommunity]

If the load is more than its capacity it gets heated up. If you see the module working normal for a few days and now it started heating up then it could become faulty.

[@raichuff9842]

I have maded it but lights not turn on and cable giving output but when connecting to router router dosent turn on

[@gajanan25]

is we use 4007 diode the voltage drops and BMS does not gets proper current, its working great but just a small query.

[@DIYCommunity]

Hi, Yes i understood and I suggest you to use a schottky diode for lesser voltage and current drop. Let me know if you have any other queries.

[@MalcolmJames-cy8fl]

I am finding it difficult to understand the purpose of the switch. If the switch is in the off position, the UPS battery will be powering the router, all the time, if it is in the on postition then the router will be powered by the input from the UPS power supply. Surely the whole point of the UPS is to keep the router working incase of a power outage. Therefore why not do away with the switch. Your thoughts please.

[@waleed99223]

i am using tplink 940 9 vatt what do u prefer which battery please guide me and 1 thing tell me 1 sell in which vott required

[@raeganvallay3465]

By adding a bypass on the ups how would it then switch over to use the battery if the power goes out. You see here in South Africa we have a thing called loadshedding ,its where the Government switches our electricity off for a few hours a day and this happens 2 to 3 times a day sometimes more depending what stage we are on.

[@DIYCommunity]

Hi, This works as an inline ups. Battery charging and powering up your device will happen on same time. In absense of main power the voltage from battery takes up the priority and starts powering your router. Based on power rating of router and battery capacity the backup time varies.

[@aswingsharif6729]

does 12v source sufficient to charge the battery through BMS? Shouldn't it need higher voltage to charge the lithium battery rather than just 12v? (don't you need another xl6009 from 12v input to BMS with xl6009 out voltage set to ..say 13.5 v?)

[@DIYCommunity]

Hi, the input should be 12.6v to charge the battery full. Yes we can have a XL6009 module in the input as well when the battery capacity is less than 3A. When battery amp is more then we have to choose a converter which can handle that current.

[@Abdullah94601]

@@DIYCommunitywhere to put xl6009 in the input before or after the diode?

[@Abdullah94601]

where to put xl6009 in the input before or after the diode?

[@DIYCommunity]

Hi, if you are planning to use a converter in input section to fed 12.6v to battery, use it before diode. And ensure using a converter that handles your battery current or else it may heat up.

[@Abdullah94601]

@@DIYCommunity i am using xl6009 at 12.7 or 12.8 v

[@yuzupiku2010]

Jio 12 volt 2.5 ampere router mey kitna time backup dega...??

[@MrSupernova111]

Pretty cool! Thanks!!

[@DIYCommunity]

You are welcome!

[@Fnta_discovery]

Hi, what did you use to drill the holes for the witch and jack plug?

[@DIYCommunity]

Hi, Just try with a sharp scissors on pvc or use a heated rod.

[@Fnta_discovery]

@@DIYCommunity ok thanks 👍

[@AvijitDharPhotography]

Is it necessary to connect a XL6009 Module with 3S 10Amp BMS? Can I make a UPS with the same process and same materials but except the XL6009

[@DIYCommunity]

Hi XL6009 in circuit is to maintain a constant output of 12v to router even when battery is low. Kindly test your router whether it runs on low voltage with same performance without this step up booster module.

[@arunkumarrawat3098]

Thanks for the video. The ckt. works well but the bypass line is draining the battery even when the switch is off.

[@DIYCommunity]

Hi, Thanks. You can connect the bypass line before the diode in input side. This will avoid connecting to the battery.

[@aadhithyapattabiraman6754]

When the switch is 'on' in the ups, though the current is also 'on' in our house, does the router works on AC power supply or the DC 12v battery ?

[@DIYCommunity]

Hi, There is a bypass line provided and its independent of UPS switch. When Switch is kept ON your router still get supply for your Adapter. and the supply is balanced by battery power when there is a fluctuation or a power cut. The battery charges even without turning ON the switch. Hope this helps!

[@aadhithyapattabiraman6754]

But if the switch is on permanently, will there be a loss of current in it from the battery? And will the ups provide 12v 2amp rating?

[@DIYCommunity]

No there won't be any losses. Your router get enought power from the bypass line.

[@aadhithyapattabiraman6754]

@@DIYCommunity And sorry to disturb you ,will it provide 12v 2amp power?

[@DIYCommunity]

It directly passes the output from your adapter connected. If your current is more than 1A use 1N5408 diode in bypass line which has a current carrying capacity of 3A.

[@mirubalishah9731]

Can we use relay for automatically cutoff charging

[@MythBustInHindi]

Bro can I use 0v and 12.5v point in my bms board for output rather than using the output point... Bcoz I have noticed my bms doesn't provide voltage from output point once it reach to 8v it stop working

[@pankajmehar2854]

Did you checked by connecting it

[@delsoduarte8866]

Esse módulo XL6009 é perigoso, entra não que é fria. Se a tensão na entrada cair a 3,5 volts, a saída chega a 40 volts, ou seja, erro feio de projeto, problema exclusivo desse chip.

[@rafaelkonishimotta2756]

Is it possible to add more baterries so they provide the 12v needed, perhaps using a different charge controller? Does the booster itself consume any current to work?

[@DIYCommunity]

You can add more batteries in parallel and choose a BMS/charge controller according which suits lithium ion battery.

[@shaiksaleem4274]

What is use of 2 diodes on output

[@kieferjohndumpit2449]

can i ask what is the use for the diode? in the in and out of the 12volt

[@DIYCommunity]

Diodes are used to stop the back current. As both input and output has same dc jack there are chances of connecting it wrongly. Diodes will protect the wrong flow and safe guard this ups.

[@kieferjohndumpit2449]

@@DIYCommunity okay thank you for the information

[@joshuacwilson6187]

Good job bro!

[@itspratik]

bought ups from amazon.i disassembled it to add more batteries. one thing i noticed is it doesn’t have any bms module. so is it necessary to add bms module? does bms module have effect on charging time? currently getting 12hour backup with added batteries but charging time is high. need to reduce it

[@DIYCommunity]

Hi, is that UPS made of lithium ion battery ? did you see any other pcb circuit? Because without a BMS circuit charging lithium battery is dangerous. BMS balances all the cells and it protect from over change and low discharge. I recommend you to add a BMS. To improve charging use a higher ampere charger than what you use currently. Again charge using BMS only.

[@celeron.26]

Very nice UPS Sir😊

[@anuruddhadissanayake4881]

Hi, can I connect a 12v 7ah battery instead of the 18650 set ? Can I directly connect it to the XL6009 ? No need of a BMS right ?

[@DIYCommunity]

Hi, Yes you can avoid using BMS. Instead you need to make a charging and cutoff circuit for your lead acid battery to work. Connect a boost converter in output is battery and vary the voltage according to your router.

[@irshuirshuz9333]

I think there is a mistake in this circute.. one of the output diode anode directly conected to bms P+.. mean the diode alow the volt to output which result the output never off even the swich is off until the bms get the discharge voltage. Better the output diode anode connect to input diode anode.

[@DIYCommunity]

Hi, you deserve a heart from me, Yes the connection for bypass is suppose to be from input line before the diode.

[@irshuirshuz9333]

@@DIYCommunity yeh.. and thanks to u, anyway i've made this and tested successfully

[@DIYCommunity]

That's great to know. Stay safe and stay connected!

[@Fnta_discovery]

Hi I would like to know with the input jack is it possible that we can charge the batteries at same time !!

[@DIYCommunity]

Yes the input jack will charge the battery also to bypass power to output.

[@Fnta_discovery]

@@DIYCommunity ok thanks 👌

[@abelboby5344]

Hi! I made the same circuit but with only 1 set of cell(3 batteries),but the backup is only around 10 minutes....and when the current comes back the router lights starts blinking without no reason.Im guessing the batteries are not getting fully charged.... what might be the issue?Can u help me with the problem here? (Everything was done according to ur circuit diagram,no mods were added.)

[@DIYCommunity]

Hi, can you tell me what batteries you used. Mak and capacity ? By the way you explain I am guessing battery is draining faster and while charging the power adaptor is not enough to handle both ups and router, because of this ups lights are blinking. Try using a higher amp adaptor if you have. This should solve your problem. Thanks.

[@abelboby5344]

@@DIYCommunity 18650 batteries 3200mah with 3.9v(chkd) And i got 1A adaptor. So how much higher 'A' i need for it to work?

[@DIYCommunity]

You router needs atleast 0.5 A and battery takes 1 to 2 Ampere while charging from low. So try using a 3A changer. If your cells are of good quality you should get a good backup with this capacity.

[@cristiansebastianmanfuert8370]

hola consulta, necesito conectar 2 router de 12v que tendria que modificar para ponerle 2 salidas. sirve para usarlo siempre conectado y cuando se corte la luz usa las baterias

[@rukshanayeshmantha5007]

Is it okay to make this without 4007 diode?

[@irapashunnur8237]

What is significnc of 3S 10A and 3S 20A. which one is better & why ?

[@muhammadyasir7399]

i stead of using switch can u use relay ?

[@DIYCommunity]

Yes you can plan to add relay for switching. That needs a different circuit and this one in video is a simple solution.

[@sharukhmatekuki5830]

Good hit 🇮🇳👍👍 Kuki

[@AbidAli-bo8sv]

My router has 12v 1A adapter, will it charge the battery as well as run the router at the same time?

[@DIYCommunity]

Yes it will charge and run your router at same time. When battery is low and BMS shutdown and when power is back you may see light will blink as the ampere is low. During that time you may have to disconnect router for 5min and then connect back.

[@AbidAli-bo8sv]

@@DIYCommunity so, having a 2A adapter would be plus for this setup?

[@DIYCommunity]

Yes definitely. 12.6v to 12.8v volt output with current more that 2A will be best selection.

[@romsaymwiti9387]

what is the purpose of putting the diode from p plus of the BMS to the output terminal?

[@DIYCommunity]

Hi, as I used same type of dc socket for input and output diodes are used to protect reverse current if the charger is plugged wrongly to output socket.

[@karunsriram3341]

Hi brother, it is working perfectly fine for me except I noticed the circuit to be working even when i turned off the switch. I feel this affect the router as the bypass voltage from the batteries will be reducing without the bms module. I have now removed the bypass diode due to this problem. Is that okay?

[@DIYCommunity]

Hi, you can use the ups without bypass line. It is optional to have this. If you wish to have bypass line which gives direct power from adapter and not from battery tap the +ve wire before the input diode and not from the bms. Hope this helps !

[@upulranaweera3597]

Can I use only 3 batteries?

[@DIYCommunity]

Yes you can use only 3 batteries. More batteries added in parallel for more backup. Circuit remains same and only change is Ampere range of BMS.

[@shanmugamn789]

If possible to use existing battery & bms to lifep04 cells. Back up will be double? (With 4 cells )

[@DIYCommunity]

Hi, Backup depends purely on capacity (mah) of cells used. And If you are planning to use LiPo4 cells choose a BMS which supports these.

[@shisheermandal4638]

sir kya aap power bank circuit aur xl6009 bosster use karke circuit bana sakte ho?? line se v chale aur line katne k baad powerbank se automatic on hona chahiye

[@DIYCommunity]

Hi Shisheer, There is already a video on the same in my channel. Kindly check and Thanks for your interest.

[@ra57services]

Your circuit diagram showed looks wrong. Why there are 2 diodes on output pin ?

[@ghah4516]

its true i have 12 volts in out put without the key... when key is open i have 12 in output

[@ghah4516]

diagram is wrong and this guy wont answer i think

[@wishwamind1060]

Nice 😊🤘

[@hannanvirtualtv]

like this system can continue 3A load?

[@DIYCommunity]

Choose a step up converter which can handle 3A load. Rest all remains same.

[@hannanvirtualtv]

chager 12v 5amh charger can use?

[@DIYCommunity]

Yes you can. The circuit consumes only what current it requires.

[@whatteverr]

isn't bms supply 12v ? can i connect router/onu direct from bms ? is it necessary to use booster ?

[@DIYCommunity]

Hi, when battery is discharging the output will not be 12v. To maintain a constant output boost converter is used here.

[@whatteverr]

@@DIYCommunity Can I make 2 12v output for using router & onu both from 1 booster circuit or need to be added 1 more?

[@DIYCommunity]

Hi, if your load is less than 3A you can use with same boost converter. If load is more use 2 converter or go for converter with higher current rating.

[@antopiac7249]

Hello, is it normal that the 4007 diode at input socket becomes very very hot? It touched the enclosure and burned a bit it. I can melt the tin without soldering iron on it. If I use different size diode can I reduce this temperature?

[@DIYCommunity]

Hi, yes you can use a 2A schottky diode which can handle more current and voltage.

[@antopiac7249]

I replaced the 1N4007 with a FR207 (2A 1KV), now the temperature is 100°C, still is high, but for sure 3 times less. Thanks.

[@DIYCommunity]

Hi, Thanks for confirming. kindly choose diode according to your battery capacity. It should not be hot until more current is drawn at its maximum limit.

[@antopiac7249]

@@DIYCommunity it is very hot in the charging when the battery is very low

[@DIYCommunity]

Yes, it draws more current while charging. If you can able to measure the current drawn it will help to choose the correct diode. Or choose a diode which current limit is more than your charger.

[@crysteljanetolero3353]

Hi im planning to build this project i planed that i will going to put a volt meter where i can put in the output voltage? and i confused about the resistor in the diagram only 680 ohm but in the video there are 2 resistor and how many watts 1/4? and also in the diode is that in4007 or 4007 only thank you

[@DIYCommunity]

Hi, Thanks for showing interest in making this ups. 1.You can couple a voltmeter in output dc jack. 2. I have used 2 resistor in parallel as I did not had a 680ohm. You can use one this is to only drive the led. You can also use 1kohm. 3. Use 1N5422 or any Schottky diode which has low voltage drop and 3A current carrying capacity. Feel free to ask if any other information needed. Hope this helps !

[@crysteljanetolero3353]

@@DIYCommunity thank you for fast response can i use in4007 diode?

[@DIYCommunity]

Hi, yes you can use 1n4007. There will be a small voltage drop inbetween them.

[@crysteljanetolero3353]

@@DIYCommunity thank you so much for replying asap im still waiting for my orders i will be back if i already finish that project and for some other questions

[@DIYCommunity]

You are welcome. Feel free to post your questions.

[@nilangarukshan8464]

Will it be a problem to use the XL 4015 Module without using the 3S 10A BMS?

[@DIYCommunity]

Hi, BMS is required to charge and manage your lithium ion battery. You cannot avoid it for safer usage.

[@nilangarukshan8464]

@@DIYCommunity I put four batteries. It's okay, isn't it?

[@DIYCommunity]

For 3S BMS you should be using 3 cells. And if want to increase the backup use other 3 in parallel to those first ones.

[@ashiqhussainbaig9801]

Can i use 20amp bms for 12v single wifi router

[@DIYCommunity]

Yes you can

[@techtag9170]

Usefull contact like it ✅💙

[@Raul_Herrera]

Hello, very good this UPS !. I'm going to build one, but I need to power the 12V 1.5A router and a 12V 1A fiber optic POE. What modifications should I make to your circuit to adapt it and power my two devices? Thanks a lot!

[@DIYCommunity]

Hi, boost converter used in this circuit can handle upto 3A, so only modification you need is to add an extra socket to connect your fibre optic POE. No major changes required.

[@Numan-Nagi]

​@@DIYCommunity can I use lm2496 module with this circuit? ❤

[@DIYCommunity]

Hi, lm2596 is a stepdown convertor. You can use it when you router requires voltage less than 12v. ie, 9v or 5v.

[@Numan-Nagi]

@@DIYCommunity my router is 12v 1.5amp battery gives 14to17 volts output

[@arifkhanada]

The BMS discontinue the current flow as soon as hits below 11.5volts on the batteries. I have 6 18650 li_ion batteries connected to a 10A BMS 3S. The backup time is only a few minutes on a 12v 1amp internet modem. Please advise on how to increase the backup time. thank you

[@DIYCommunity]

Hi, here the battery is not charged full. It requires 12.6 volt to attain full charge. Replace the adaptor and replace the input diode to a schottky diode which allows more voltage and current to pass through.

[@arifkhanada]

@@DIYCommunity hi. Thank you for responding. Actually, Even after the battery is charged to 12.6 volts, still, the BMS cutoff the power after hitting 11.49 volts. (The over-discharge feature.) 12.6v max and 11.49v min is not enough of a window. I’d rather have the lower limit down to 9volts maybe? 12.6v max and 9volts mim for the BMS’s over charge and over discharge. Please advise

[@DIYCommunity]

Hi, i don't think there is an option to adjust the cut off voltage in BMS. What I remember was a 3S BMS has a cut off of 10v. Will check and come back on this. If you know any method to change the cutoff pls share it here.

[@gamingtamil4768]

Hi, I'm trying to use 3 cells. What BMS should I use?

[@DIYCommunity]

You can use same 3S bms but you can reduce the ampere rating according to battery capacity.

[@parthmendiratta533]

Can we use 2 Li ion cells - 7.4v battery pack and boost it to 12v ? Please reply. Thank you

[@DIYCommunity]

Hi, Yes you can use 2 cells. Choose a charger of 8.4volt and 2Sbms board. You can also use a 9v adapter to and connect a diode to reduce its voltage to 8.4v.

[@quantenschaum]

Nice, but you only need to use DC-DC converters when using a different voltage at in/out or even several outputs at different voltages or when the voltage does not match the voltage of the battery. Basically only a 3S battery pack with a BMS hooked up in parallel to the power supply would do it in this case (12V). The BMS you used is not balancing afaik, I would recommend to use a BMS with integrated balancer.

[@technicalsohil4063]

i am using this video refrence from 1 year .its going butter smooth with no issue.

[@gerellabel7384]

the adaptor input is connected also to the battery base on the diagram.why is that if the ups switch is off, theres no power on the router even though the adaptor is paralleled to the battery?

[@DIYCommunity]

Hi, the negative is common on whole circuit. And there is a bypass line provided which will power your router independent of ups switch.

[@sspatel3219]

I have some doubts, in my area there are power cuts many times for 15 to 30 min but not more than hour, is it sufficient to use 3 18650 old cells of 2500mah capacity. My router uses 12v 1.5A. After the power cut is there any gap(delay) to switch in battery mode? And the last one is that i think it is using battery power all the time even in charging time also means it is charging from one side and discharging from another side.

[@DIYCommunity]

Hi, with Three 2500mah batteries in series can give upto 2hrs of backup. The above said can be achieved only with original batteries. As you said if there are frequent power cut the batteries may not charge full to survive for another power cut. With this circuit the will not be any gap in switching and no fluctuations during power cut. My suggestion is if you are planning for a longer backup then plan for making 2S or 3S battery pack with original & good capacity cells.

[@DIYCommunity]

Hi, if your router is of 12v. Try once to connect the bms output directly without boost converter. The problem you are facing is that your BMS is going to sleep mode. And reason might be one or more faulty batteries or load is very less.

[@sspatel3219]

@Lyrical Beat Box🎵 📢 brother tell me your router name. mine is working fine with 6 cells of 2000 mah capacity without any booster (12v !amp) getting 3 to 4 hrs backup.

[@DIYCommunity]

Mine is a Nokia router. The problem you see with boost converter could be because of non original or a faulty one. You can use the setup without boost converter for now but I recommend buying a good one and integrate it is a better solution for long term usage.

[@_Nats26]

you use stranded wire or solid wire?

[@DIYCommunity]

Hi, I used multi strand wire. You can use a single strand copper wire also.

[@krishnachoubey4165]

Great effort 👌 I have two questions on this video 1. As u know there is a landline output so can I connect my landline to the router while using the mini ups? (NOTE: hardly I receive one or two calls in my landline per week means there is no much usage) 2. We know that when power goes it automatically works on UPS's battery but when power is back does it still work on battery? My concern is battery might be over charged as we use this ups 24*7 hence battery life will come down Plz clear my doubt plz

[@DIYCommunity]

Hi, here are my answers 1. Yes you can connect landline to router as it does not consume more extra power. The router drives the landline and we just power the router with same voltage. 2. This is a inline ups. Charging and discharging is managed by BMS connected to it. I am using it on tata play router with a landline connected. Almost 2 years now and never see my router is off.

[@krishnachoubey4165]

@@DIYCommunity tnx dear Now I will connect my landline and let the router be On 24/7 via ups Once again thank a lot And yes it's really an excellent presentation in the video Great effort you have put to complete this video

[@azimsheikh6524]

buck converter ki jaga 7809 laga sakte ha ??

[@DIYCommunity]

Hi, Voltage converter IC can be used for low power uses as it has capacity to carry less than 1A current. It may not work properly with routers.

[@azimsheikh6524]

@@DIYCommunity ok

[@alexmandal]

With 12v power supply yr batteries will never fully charge. How long will they last? 3months?

[@DIYCommunity]

Hi, Thanks for your comment. what you say is for lead acid batteries and here we have used lithium ion batteries and with a BMS the battery is charged full and discharges to a limit so ensuring a longer battery life. Happy to answer if you have any other queries!

[@alexmandal]

@@DIYCommunity 3x4.2v=12.6v... Measure yr adapter volt, it'll be max 12.5 hence yr batteries will never fully charge... Read yr BMS manual

[@DIYCommunity]

Hi, yes my adapter delivers a voltage of 12.5, Measured 2 of them which I had and they measure same.

[@samtiny6332]

u r right but 12.6 adapter is hard to find or take more cost

[@alexmandal]

@@samtiny6332 use 12V 2/3/4/5A smps or LED drivers which r abundantly available. They have trimmer to adjust from ~10v-14v. Otherwise u can change the biasing resistor of existing 12v adapter for +/-1v safely, there's many utube guide vdos. But then again, opening a sealed shut adapter will be destructive.

[@huznaa9360]

You had extra resistors added what ohms and why bro

[@DIYCommunity]

Add 1k ohm for led. I did not had 1k so used an extra to match the value.

[@bikimadhu2133]

Bhai kya chhoti battery ki jagah Par pc UPS ki battery use nahin kar sakta kya please reply batao 🙏🙏

[@ruwantharatnayake5004]

Can we use 3S 20A insted of 3S 10A? what alternations needs to be made?

[@DIYCommunity]

Hi, Yes you can use 20A BMS and no alterations required. In future if you want you can add more batteries upto 20A.

[@irapashunnur8237]

Why is 3S 20A required ? it should work with 3S 10A

[@irapashunnur8237]

XL6009 will reduce the back-up time. I hope we can avoid using it. What do you think. What will happen if we dont use XL6009. Is it neccessary ? what about diodes, do we need to use diode in the input of 12 V adapter and also in the input of the XL6009 pcb ? Why is it required ? Pl reply

[@morchattisgarh]

I made a mini router ups using your video But i am facing an issue Whenever i plug out the adapter from the ups in running state The whole circuit went off and showing 0 voltage in meter until i switch the power button off and on What should be the reason I am using 3 set of 10000 mah power bank battery means i have 10 ampere so which diode should i use. I am using 3s 20A bms for this 30000 mah battery

[@DIYCommunity]

Hi, i recommend you to check the connections. Remove the bypass line and check whether ups is on all times. Also if you are using old cells there are chances of any faulty cells in you ups so find that and replace. Because of this BMS may get into sleep mode. And you can use a 2A schottky diode in input which has high voltage and current carrying capacity.

[@jayashrigandudi8484]

Sir can we use 3s 20amp bms

[@DIYCommunity]

Yes you can use

[@jayashrigandudi8484]

Thank you sir

[@santanubandyopadhyay2189]

any link for batteries ? also , the booster ckt is not available in amazon

[@DIYCommunity]

Hi, you can google for Roofers make lithium ion batteries and buy as per the capacity you are planning. Booster ckt ? You mean boost converter ? If so you can but that also online. Search for XL6009 boost converter.

[@santanubandyopadhyay2189]

@@DIYCommunity thanks any way i can make it for two routers .. i have one anu and one router both 12 v 1.5amp

[@santanubandyopadhyay2189]

@@DIYCommunity Also , u are using 6 * 2000 mah batteries right ?

[@DIYCommunity]

I have reused cells from old laptop battery. 3 cells in series x 3, each is of 2600mah. Again as they are old their capacity might have reduced. New batteries should give more backup and longer life.