Supercapacitor Battery Hybrid Power Boost! - Using Supercapacitors to boost Off-Grid Battery Systems

[@diysustainableliving2774]

Watch how to make a DIY powerwall using LiFePO4 32650 cells: kzbin.info/www/bejne/n2WzoYGtnZiep68

[@ilrichiamodellazolla]

I wanted to thank you from the bottom of my heart because after almost three days of watching dozens and dozens of videos in English, Portuguese, Italian, and German on how to use supercapacitors to run a refrigerator with spikes, finally your video not only shows it but also demonstrates that the capacitor bank should be connected to the inverter. I understood it should be done this way talking with ChatGPT, but I didn't dare to do it until I saw someone else doing it. Thanks to your video, I can be at ease now.🎉🎉🎉🎉

[@diysustainableliving2774]

Thank you. Im happy to know that these videos are helping others. It will be always better to start with a small system and get confidence before spending a huge amount of money on a larger permanent system. Also please watch my video on voltage spikes on the AC side when the appliances stop working. This is especially important as it has the potential to damage your equipment during daily use.

[@ilrichiamodellazolla]

@@diysustainableliving2774 Which video are you specifically referring to?

[@diysustainableliving2774]

This one.... kzbin.info/www/bejne/rHikl5qEg9VlrdE

[@a64738]

Finally someone showing what a super capacitor like this actually is good for :) I was just thinking it should work perfectly for saving me from having to buy a huge bank of AGM batteries to get the fridge started when using inverter in my van. Should also be a huge help as a start booster in cold weather for stubborn diesel engines :) (diesel engines start a LOT more easy and fast if they get lot of Amps for a short time) .

[@jaiprakashn9686]

Dear S.L. Excellent of you, to do this video on Super capacitor's, 6 in series 2.7 v 500f capacitors benefits is amazing, thanks for your creative Demo with simplified details, 👍🏿👍🏿👍🏿

[@diysustainableliving2774]

Your welcome! If you have any questions please let me know. Thanks.

[@alphainfinitum3445]

This is great stuff. Another way to get your fridge or air conditioning started on a battery application is to connect a car battery in parallel with your battery bank using very thick cables, probable 3 or 4 gauge cables. It works in a similar way. The car battery which is capable of providing up to 600A and in some cases 750A when starting a car engine will take care of the demands of the air conditioning foe those first few seconds. Then the power bank can continue. Just make sure to isolate and recharge the car battery each time.

[@diysustainableliving2774]

True!.... Yet the supercapacitors have the advantage of many more cycle life. So all you have to do is set it and forget it.

[@athmagaveshana502]

This video is quite impressive and valuable information provided, Thank you

[@diysustainableliving2774]

Your welcome!

[@darrishawks6033]

This is extremely cool and this video deserves more views

[@diysustainableliving2774]

Thanks.

[@PeterWaldraff]

Thankyou, well done! I appreciate the explanation and the side formulas.

[@diysustainableliving2774]

Thanks!

[@jec_ecart]

Excellent testing.

[@diysustainableliving2774]

The results are not 100% accurate but they are close to the real world values.

[@topeye4202]

The capacitors should not be connected directly to the battery at first. Preload them slowly with a bulb or resistor before connecting to battery. Unfortunately its not shown in this video. Never the less its a Great Video, Thank You : )

[@diysustainableliving2774]

Yes true.... That is important since a large amount of power is transferred within seconds if you dont put a resistor. Im showing that on my other video where we have to connect a supercapacitor bank for the first time especially when there is a significant voltage difference.

[@isobutylquinoline]

Excellent video. I've read that parallel connections should have battery and capacitor (+) connected and battery/capacitor (-) connected to each other. Then you take the capacitor (+) and connect to the inverter and the battery (-) and connect to the invertor. What is the benefit of doing it like they way I mentioned or is it better to do it like in the video?

[@diysustainableliving2774]

It is important to charge the caps slowly first before connecting directly to the battery. The main issue is when you connect a fully drained capacitor bank you are going to deal with large ammount of power going instentaeously when you connect the battery. This can cause heat which can cause a lot of problems. Even destroy your capacitors.

[@seewaage]

Great video! I'll give that a try.

[@diysustainableliving2774]

Thanks.

[@christiankulmann3325]

Powercap Supercaps (12×500F )×3 Accu Battery 2,7V Farad ➡️ kzbin.info/www/bejne/n5m2lGp4n8Sih80 Solar PV Limiter Inverter

[@makeitbuilditloveit]

I needed this. Thanks.

[@r43007]

Great system. Thanks for posting. My question is, Will this work with a 24v solar system? How would you set it up? 2 units in parallel for a total of 12 caps (2 modules that it).

[@diysustainableliving2774]

Now each supercapacitor is 2.7v. For a 12v system the charging voltages reach 14.4v so it is better to have a higher voltage at the capacitor bank. Thats why we are using 6 caps in series for a 12v system to get a 16.2V capacitor bank. So if you are going to go for a 24V system you will need total 12 super caps in series. That is two of these capacitor banks in series. NOT parallel!!... Also note when you connect it in series the capacitance goes down.

[@hyrollin81]

Very cool, and great explanation.

[@diysustainableliving2774]

Thanks!

[@johnsnowlow1883]

hello, I intend to parallel a 16v/50F super capacitor module that I have bought to a 12v sealed lead battery, my question is do I need to charged the super capacitor before I parallel with the sealed lead battery? Thanks

[@diysustainableliving2774]

Yes it would be a good idea to slowly charge it up first to get the voltage closer to 12V befire connecting it. If you connect it directly, you can expect a large amount of power to flow in and cause the capacitors and wires to heat up. That is not a plesent experience.

[@daniellapain1576]

I have 2 caps at 35 uf +5% 425v 60hz, would this work with this? They are meant for industrial motors originally but I want to use them for a 12v solar setup. Capacitors have always confused me on how to use them properly. It looks like the cycles increase based on voltage input from what I have gathered. My only concern is would these units store voltage up to that high voltage rating? If so would it destroy my system.

[@diysustainableliving2774]

I think the caps you have can store a small ammount of electricity at a very high voltage. Supercapacitors are rated in the farad range (F) not micro farad (uf). The caps I have are each rated at 2.7V and 500F. There are 6 of them in series to get 16.2v which can be used for a 12V system. You can buy these online quite cheap.

[@daniellapain1576]

@@diysustainableliving2774 thanks for the advice and I will definitely try looking into it. Thought I would save some money with what I already own but I will keep it on the safe side and use what is proven

[@mydailyideas2634]

great explanation 👍

[@diysustainableliving2774]

Thanks. Hope it helped.

[@mapepe2011]

Great Video! what about a setup where the existing battery bank is two lifepo4 packs in parallel, each 12v, but with different AH capacity? sometimes each individual pack's BMS will disconnect itself. for example, if it is full. If I added a supercap, such that I had 2 lifepo4 packs and 1 supercap, what would happen to the setup if one of the pack's BMS disconnects itself?

[@diysustainableliving2774]

Thanks.... As for the bms disconnecting, I dont thing it will be nocicable when a supercapacitor pack is in parallel with it.

[@zr7699]

Thank u, I am about to try the same thing and have so many questions. U definitely answered some of them. I have a solar charge controller. Would everything be hooked up the same.?

[@diysustainableliving2774]

Yes... Connect the supercapacitors at the inverter terminals with thick cables for best results.

[@randalthor6962]

This video is very informative. I have a lifepo4 battery and also have some fault beep on my inverter during startup of my fridge. I am planning to install super capacitors. I am thinking of two ways to connect it. 1. Parallel directly at batteries(under the BMS) 2. Parallel directly at inverter terminals(outside BMS). Which is better?

[@diysustainableliving2774]

I'd suggest you go with the option no 2... Parallel directly at the inverter because you want the power boost right at the inverter terminals. Make sure the distance is short and you use thick wires to deliver the power from those supercapacitors. Lifepo4 batteries are good. They are able to deliver large ammounts of power when needed. I think your BMS may be limiting the power output at startup. Also make sure the wires are thick and distances short to prevent loss due to wire resistance.

[@randalthor6962]

Im have 24v CALB, cheap ones sold here in Philippines. I suspect since these are used cells they have lower surge current. my BMS is 100a and 3kw surge power on my inverter, I am betting on super caps to fix fault beeps during startup. Thanks for the info my friend.

[@diysustainableliving2774]

For 24v you might need 2 × 12v sets. Each supercap is rated for 2.7v. So you will need around 10 - 12 supercapacitor in series since you have to take into account the charging current aswell. Make sure you size it according to your systems maximum voltage and leave a bit of additional room to spare as going to the limit might shorten the devices lifespan.

[@johnsnowlow1883]

Hi thanks for the useful video. If I need 24v how do I achieve this ? Buy 2 units ? And once I connect parallel to the lead acid batteries, I can use the lead battery charger to charge them together with lead acid battery ?

[@diysustainableliving2774]

Yes and yes. Just connect one capacitor bank in parallel to each battery and connect the batteries in series to get 24V. It will also be a better idea if you connect the 2 supercap banks in series and connect it as close as possible to the inverter with thick cables so that it can give the power as soon as possible when needed before the batteries.

[@johnsnowlow1883]

@@diysustainableliving2774 thanks for the reply, you mentioned that it's is also good for audio, can you give an audio application example. Thanks

[@diysustainableliving2774]

Its good for audio applications where the bass draws a lots of amps for each beat. The caps will help give the power when needed. This is especially important if your power source cannot deliver the required power for the amplifier.

[@johnsnowlow1883]

@@diysustainableliving2774 thanks for the insights

[@johnsnowlow1883]

@@diysustainableliving2774 sorry where do you insert the Capacitors for amplifiers?

[@Pbeas52]

Interesting video, can you share a rough schematic drawing as to how you have the capacitors integrated with your batteries? Also, do you charge your batteries & capacitors separately?

[@diysustainableliving2774]

The batteries and supercapacitor bank are connected in parallel. Once connected I dont charge them separately. They will charge and discharge with the battery voltage. Please note that the supercapacitors in the supercapacitor bank are connected in series. This is bacause each capacitor is only able to handle 2.7v. So to get a higher voltage we have to connect the capacitors in series.

[@Pbeas52]

@@diysustainableliving2774 Thanks for your response. Are you using a BMS or solar controller to charge the batteries & super capacitors? I was told that anything using a trickle charge won't work.

[@diysustainableliving2774]

Attatching the supercapacitors is a set it and forget it job. Once you set the capacitors in parallel to the battery you dont have to do any additional things. All you have to do is charge your battery just as how you usually charge it. I have this system attatched to my solar panel and it has a cheap pwm charge controller. You will need a BMS if you are having lithium batteries.

[@Pbeas52]

@@diysustainableliving2774 Again, thanks for your response & information. What brand & model is your solar controller & do you think the batteries & capacitors would work with a mppt controller if in parallel?

[@diysustainableliving2774]

I am not using any branded things. Only generic cheap chinese products. As a general guide when buying online if the product has a lot of good reviews then it should be a good product. Yes of course if its within your budget it will be better if you can use an MPPT charge controller.

[@Rayz3ON]

What are the effect with the super cap connected to the battery during the night? Do you leave it connected or disconnect? Because the cap has high discharge

[@diysustainableliving2774]

I leave it connected. Aslong as it is connected to the battery it can give a small boost of power for induction losds when they start up. As for the discharge rate term, it is relative. Compared to normal caps, supercaps have higher discharge rates but the amount is negligible. It wont drain your battery over night.

[@johnsnowlow1883]

Hi happy new year, do you need to charge the super capacitors ?

[@diysustainableliving2774]

Hi!... Happy New Year to you too!... Yes it is important to initially charge it when there is no charge. But once the voltage is near the battery voltage it can be connected directly and can be left in the system during normal operation. The problem happens when large charge travels in and out of the caps.

[@johnsnowlow1883]

@@diysustainableliving2774 Thanks, what kind of charger do you use to charge the bank of super Capacitors ?

[@diysustainableliving2774]

Its not a charger. Just place a resistive load between it and the battery. A 12V car bulb will work fine. It is just to limit the flow of amps into the capacitor bank when it initially charges up to 12v. Please look through my other videos where I demonstrate how its done.

[@muhammadsalau7014]

Thanks for sharing. But you said your super capacitors are connected in parallel to the battery setup? Well, I think The video says they are in series!

[@diysustainableliving2774]

Each one of those cylindrical blue thing is a supercapacitor. Each are rated at 2.7V 500F. I need to run a 12V inverter so there are 6 supercapacitors connected in series to make a 16.2V supercapacitor bank. That supercapacitor bank is connected in parallel with the 12v battery system. You have to always take into account the capacitors voltage rating as well when you are designing your system.

[@MichaelJeffers75]

I'm surprised the auto industry hasn't adopted super caps into the starting system, especially for cold weather regions.

[@diysustainableliving2774]

May be because it adds another component in the system which makes repairs more complex as well. It is easier for them to just spend money on the required battery power than add another component to the system. For people like us the battery is the component with the biggest price tag. So if we can get away with a smaller battery we can reduce our system cost aswell.

[@MichaelJeffers75]

@@diysustainableliving2774 auto manufacturers I get, but why no after market products of this nature? I'm building a business that requires voltage from a truck and I'm thinking about ditching the start batt and getting a deep cycle to power my gear and recharge the caps for starting. It just blows my mind that there isn't a product that fulfills this need. And why don't new cars come equipped with self jump starting, or even offer the option?

[@diysustainableliving2774]

I think your targeting a niche segment of consumers whou are interested in and willing to do these sorts of things. (People like us :) ) But the vast majority of customers want something reliable that will start up with a push of a button on their way to work. Hope you are able to build something compact that has the features you are planning to add on. Remember people want more convenieance than capability.

[@spreda20031]

@@diysustainableliving2774 I hear from a friend that Toyota Corolla hybrid, recent model use this

[@diysustainableliving2774]

The hybrid cars use AGM batteries for the 12v segment. That is just to start the onboard computer and relays. Once the system is on it will take power from the high volt battery to power the car engine and electronics.

[@xXZ31t6esTXx]

Greetings I have asked this before with no answer...could you please give an example on how you would make a battery bank work with super capacitors? Let's say I want to build a 144 volts system to give a 144V electric motor propulsion, to assist my gas car. Should I then build a 144volts battery bank and also at 144volts super capacitor system in parallel? Or a 60volt battery bank and a 60volt supercapacitor syst in series? (To max out at 120V)(Assuming the controller can take from 60volts minimum to 144volts max)

[@diysustainableliving2774]

You have to place it in parallel. If you place it in series the capacitor bank will discharge within seconds and you would be left with a broken circuit. If you want to make a 144v supercap bank you will have to place it in parallel to boost the battery output. And also you will need a lot of supercapacitors to acheive 144v!

[@anonanonymous1988]

Dude, what are you running that you need 144v? On a side note, 144v is pretty dangerous if you have anything close to 1 amp of current running through the circuit. It takes less than an amp of current to stop your heart. At that voltage, it's more dangerous because more than 12v can pass through your body's resistance. Tasers, for instance, run at a high voltage but very low amperage. It probably won't kill you but will provide a nasty shock at low amperage.

[@anonanonymous1988]

How do you protect your battery from drawing too much current to charge the supercapacitors?

[@diysustainableliving2774]

This is important when you initially charge the super capacitor bank to the system voltage. For that you can yse any form of resistor. I used a 20w car head light bulb to reduce the amperage. Once it is equal you can just leave it connected to the battery as there wont be a lot of energy flowing between them once the voltages are equalized.

[@josuearingo6495]

Great job mean .thanks for sharing new subs here

[@diysustainableliving2774]

Thanks!

[@ralphhardie7492]

Great stuff 🙂 Thank you

[@diysustainableliving2774]

Thanks!

[@garneau67]

Does this interfere with solar charging in this configuration? Curious if the capacitor would give a charge controller a false battery voltage not allowing full charge. Would a car audio capacitor be adequate as well? Somewhere in the range of 5 farads? Thanks

[@diysustainableliving2774]

As long as you add a battery or buck converter the voltage will be kept stable. Now my super capacitor bank is having a calculated capacity of around 56 farads. So the more farads you have the more power you have to play with.

[@garneau67]

@@diysustainableliving2774 I have a converted chest freezer am running off a solar system. The two main challenges so far are inverter draw power on initial startup and the standby power of the inverter. I've found another video where thermistors are used on the load side of the inverter to stop the initial high current from overloading the inverter. What are your thoughts on this design? Link: kzbin.info/www/bejne/Z36ziGSaptqfjdk

[@diysustainableliving2774]

Well as long as it starts the refrigerator you can get away with it. If not then you will have to provide the power necessary for it to start. For that supercapacitors are useful when placed on the input side to provide that power boost. I think you will have to do a little experimenting with the freezer you have and see how it goes.

[@diysustainableliving2774]

As for the standby power of the inverter you have to calculate for that as well when you size your battery and solar panel. Its always better to over size and have extrapower than than to undersize and regret that you could have had more.

[@phillip557]

Can you make a video exploding capacitors? This was very good 👍.let me know if you want to do this professionally.

[@diysustainableliving2774]

Thanks for the offer. Sorry I dont like to see my caps explode! :)

[@phillip557]

@@diysustainableliving2774 I totally understand. But if you get some that wears down and you replace it, consider filming the safe destruction of them. I'm serious about helping you grow on KZbin with whatever projects you like. You have a clear voice and sound like a professor.

[@diysustainableliving2774]

Its ok. Thanks!

[@scrubbingmonkeys2488]

Do these capacitors put a heavy load on the battery when recharging after they deliver the current needed to start the induction load?

[@diysustainableliving2774]

No additional load. The voltage will rise with the rise in battery voltage. What ever power was used has to come from somewhere. Small batteries are unable to give a large burst of power(Amps) for the first few seconds without dropping the voltage significantly and shutting the inverter down. The caps help lessen the voltage drop by providing that initial burst when needed.

[@presidentchaung]

hi,can i parallel this to my 12v lifepo4 battery? if so, do i have to hook up everytime i have to boost or just leave it connected all the time? i use solar to charge my lifepo4,do i have to change charging voltage whrn it's hooked to caps?

[@diysustainableliving2774]

Lead acid battery charging voltage is 14.4V where as for LiFePO4 the charging voltage is more or less the same. I keep mine around 14.2V. As long as the maximum voltage is below 16.4v you wont have an issue with the supercaps.

[@presidentchaung]

@@diysustainableliving2774 thank u for the reply , i'm looking forward to see more of your videos

[@diysustainableliving2774]

Thanks!

[@interruptedz]

Can i use this for LiFeO4 batteries? How about the leakage? It might drain the battery in the long run

[@diysustainableliving2774]

Yes you can use it for all types of batteries as long as the voltage is within the capacitor banks limits... If you dont charge your batteries for many months they can drain.... But as long as you are charging and using every day like in a solar power system then this should be negligible.

[@yusifsuleiman5502]

Hi, please I have gotten 10000MFD 100VDC capacitor, will it work to support and help my battery system. Regards

[@diysustainableliving2774]

10000MFD means? Is it milli farad? My supercapacitors are in the Farad range. 500F at 2.7V each.

[@yusifsuleiman5502]

@@diysustainableliving2774 I really don't know the MFD, that's why I want to find out

[@diysustainableliving2774]

A google search reveals that an MFD is a micro farad. So you will need 1000000MFD to get 1 farad. So 10000MFD will be 0.01Farad.

[@yusifsuleiman5502]

@@diysustainableliving2774 thanks for your concern, and this seem not to have significant impact on the battery. May be if connected like 10 in serial.

[@diysustainableliving2774]

I think it will be cheaper to get good supercapacitors online.

[@vladimirm9362]

Excellent video. Can supercapacitors be used with an power inversor a DIY wind turbine system without using batteries?

[@diysustainableliving2774]

I think the answer is No! For most cases. But with supercapacitors you can use a smaller battery to drive heavy loads for a short time. But if you need to use the equipment for a longer time then you will need a bigger battery.

[@gabrieldafeakeh361]

Is this cheaper than using a soft starter on the fridge?

[@diysustainableliving2774]

Im not sure about the soft starter and its costs. This video is to prove in general how to boost the battery performance using supercapacitors.

[@vickySingh-tg4gt]

Can i use this for my car audio.???

[@diysustainableliving2774]

Yes...

[@prepers3952]

Thanks you👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍

[@Rcrdo072]

What if your battery is in 24v, can we use two of this in series connection?

[@diysustainableliving2774]

Yes... Remember when you connect capacitors in series their capacity goes down proportionally to the number of capacitors there.

[@littleluck2023]

Great dude...i understand..

[@diysustainableliving2774]

Thanks!

[@TheVedicWayChannel]

Thank you. Interesting video. Do you know if there is a big risk of electric shock (deadly) if you were to accidentally touch the super capacitor terminals?

[@diysustainableliving2774]

The voltage at the supercapacitor series is only 14.4v max because it is attatched parellel to the 12v battery. So the risk of electric shock is not there. However you have to be careful not to reverse charge or short circuit them because they might explode in those circumstances.

[@davidwima5965]

Great video , nicely explained too. 👍 I am think of applying this to my E motorbike to gain more power on take off . I have a 72v 10000w hub motor. Battery pack of 72V to 78V continuous power,100AH and C2.5 discharge, lifeP04 battery pack. Is there anyone who is knowledgeable can give me some information on a setup of super capacitors and how to set up ? Or even better I think there are others like would like to see a KZbin video on this topic if someone like to to do one please . Please don't forget to send me a link if someone does it . Kind regards.

[@diysustainableliving2774]

Thanks.. Well for 72V you will have to find super capacitors that are rated for around 100v and parallel connect them. Any thing more than 78v would do. The super caps Im demonstrating are 2.7v each and 6 in series to get a voltage of 16.2v. If you do that to reach 72v you will need a lot of them and the bulk of it wont fit into your E bike. BTW that LiFePO4 battery pack is more than capable of giving high discharge power. Unless it is limited by the bms you should not need a super capacitor bank.

[@costabeachilhadetavira63]

@@diysustainableliving2774 Hello. Im looking for this topic, and im also try to know how to use supercapacitors on my 60v ebike liyhium batteri. it will woork toget more power?

[@mhamud937]

Your fridge how much time running in this system.. Super capacitor and small battery???

[@diysustainableliving2774]

The running time of the fridge is depended on the storage capacity of the battery. But a small battery dosent have enough power to START a fridge smoothly. Thats where the supercapacitors help. Only for a few milliseconds it can give a power boost to start the load. SUPERCAPACITORS ARE NOT! A REPLACEMENT FOR BATTERIES. They can help augment the battery but not replace it completely!

[@robwoodward2482]

Why is the positive wires, on cap , connected to the negative side of the inverter and battery….would have been nice to see your wiring

[@diysustainableliving2774]

I really didnt realize that in the video it looks like that. The battery wires are actually crossing to the opposite side because of the bulk of wires from the capacitors. I hope you can see the red screw cap at the back of the inverter which is just visible. It gives an Idea of the location of the terminals.

[@jamesallen9733]

What is the current drain when left connected to a battery?

[@diysustainableliving2774]

Well I didnt asses that. I guess its negligible for me since the battery charges daily when the sun is out.

[@earthenergyhex]

are your batteries grounded by the negative pole of the battery

[@diysustainableliving2774]

Nope.... I guess it will be better to give a proper earth grounding for the system as there is a back flow of AC current to the battery while the inverter is working. You have to be careful with cheap inverters.

[@earthenergyhex]

@@diysustainableliving2774 I tried connecting a capacitor to my battery bank in parallel and it caused my solar controller go into ground fault error. not sure why.

[@diysustainableliving2774]

@@earthenergyhex Ground fault? It hasn't happened to me. There is no reason why it should. BTW What do you mean by ground fault?

[@earthenergyhex]

@@diysustainableliving2774 I have a conext MPPT 60 150 solar charge controller with a Conext SW 4024 inverter/charger. I connected a "Absolute CAP400B 4.0 Farad 24 Volts Digital Capacitor" to the battery bus bars, it immediately blew the fuse I put in line as protection. But since then, my MPPT controller says I have an active ground fault.

[@diysustainableliving2774]

@@earthenergyhex I had to read the specs of your system. It seems that your system is a 24v system right?

[@preetheshkumar227]

Sir, what is full ampere of these 500F, 2.7 volt single capacitor.

[@diysustainableliving2774]

Good question! First you should understand that capacitors temporarily store electricity. They are not batteries. In theory if the values of this Cap is true then at full charge it can give you an output of 1V at 1A for 1350 seconds only. But remember these are cheap ones and according to my calculations these have around 330 to 360F of capacitance per Cap. The benifit of the capacitor is that you can get a large ammount of amps for only a few milliseconds which is good for induction loads.

[@samuelivanoandrew1377]

How long can your fridge run on this setup?

[@diysustainableliving2774]

It depends on the amount of power stored on the battery and how much power your fridge uses.

[@diysustainableliving2774]

The action of the supercapacitors can be best appreciated in small battery systems when running heavy loads. Have you ever considered adding capacitors to your system?

[@pommypaul9118]

Great video for a "lay-physicist" like me (ha! ha!). My 120v fridge draws 1.5 amp (so about 180 w). Starting inrush drops 12v batteries to about 11v and alarms or trips the 1Kw (modified sq. wave) inverter, then batteries (nominal 200 Ah) return to full voltage. Wondering if there'd be enough capacitance to start the fridge adequately, or would I need more? Thanks

[@diysustainableliving2774]

To calculate the startup power for that fridge you have to multiply the rated power(180w) into 5 to 7 times. So 5×180= 900w minimum and since you have a modified sine wave inverter it might need a lot more power to start or might not work at all because especially the fridge compressor needs a clean sine wave to function properly. In this case I think the problem is your inverter not the battery. Mine is a 500w pure sine wave inverter. Sorry for the late reply... just saw this comment.

[@pommypaul9118]

@@diysustainableliving2774 Yes, I am aware of the inrush current demand on startup. The dial on my fridge needs turning up when on inverter power; suggests you are right about the sine wave. I am already shopping for a reasonably priced pure sinwave inverter (maybe 1 Kw). Any suggested model and supplier on line? Thanks for your reply.

[@diysustainableliving2774]

Well I cant recommend any brand as such but you have to take into account your future needs. Are you only planning to use your fridge or have any other appliences on your mind aswell in that case you will need more power. Also make sure what the output is. Some advertised 1kw inverters have only a surge output of 1kw which lasts for only a few seconds. Their continuous power rating is half of that which is 500w. Keep that in mind while shopping. I am using a cheap one I got off Aliexpress and its more than a year now. Still working great.

[@kentsiam]

Thanks for the video!! Warning!! a newbie's question here :) So by adding Supercap (the way you did, in parallel with the battery) to a solar system, in general, does the Supercap get charged again along with the battery from the solar panel? Thank you.

[@goharjamil2297]

how much power dc capacitor can we use in pv ends of 5.6 kw inverter for tark load?

[@diysustainableliving2774]

Generally speaking, the bigger the better. But for a 5.6kw inverter what is your battery voltage?… Ideally the system should be 24v or 48v to handle that load as a 12v system will be using a lot of amps and will overheat. So for this sort of high power applications adding capacitors might not add a great deal of improvement.

[@goharjamil2297]

@@diysustainableliving2774 48 v battery but i am using without battery n grid so due to tark load of 2 fridges inverter get trip. Some told that 450v and 2200uf dc capacitor can resolve this issue!

[@diysustainableliving2774]

Im not familar with AC capacitors or soft starters for induction loads. It would be a good idea to look for that information some where else. What Im showing on my videos is DC side capacitors to boost the input power of the inverter.

[@goharjamil2297]

@@diysustainableliving2774 i am talking about dc capacitor on pv input end

[@diysustainableliving2774]

The supercapacitors I am using are in the Farad range. 83F in total at 16v. 1F = 1000000uf. I dont think adding a 2200uf capacitor will do anything. To prevent inverter tripping first make sure the inverter can handle the load you are trying to run. Next make sure you use thick wires from the battery to the inverter. Third, if you want to add these capacitors you will need 4 of these 16v supercapacitor banks in series to accompdate the 48V battery. This should help your battery in the initial start up load. Lastly you can explore soft starter options for your load. I dont have any experience with those so I cant say whether they will work or not.

[@bobcatt2294]

Unfortunately you do not show the back side where the terminal from the supercaps are connected.

[@diysustainableliving2774]

Hmmm... This set of videos were done just to share the results of my DIY setup. I guess I didnt put much effort in planning for the video. Is there something specific that you want to know about the connections?

[@bobcatt2294]

@@diysustainableliving2774 There were 2 others who ask me how were the caps connected, that why I posted this comment. BTW, thumbs up.

[@diysustainableliving2774]

Hmmm... Well the caps are connected in series to achive the required voltage and then the set is connected in parallel to the battery output. Hope that answers your question.

[@vedaprakash2707]

why haven't you tried lke this, trying to get the initial boost by supercapacitors and then start using the battery. rather than using them together from the start itself. so that it wont drain out the battery easily.

[@diysustainableliving2774]

It is more simple to just connect it in parallel and let it just function in whatever system you use it in. Making a mechanism to connect and disconnect the supercapacitors adds more complexity and dosent provide a significant benefit. I am using the supercacitor setup in my off grid solar power system. During the day the voltage is around 14.4V so during that period Im able to run my setup on solar power directly and the batteries can rest as they charge.

[@mhamud937]

Super capacitor and battery in parallel system..... Always time working 24 hours super capacitor day night..??? Same time super capacitor can charge discharge????

[@diysustainableliving2774]

I think you have to do a bit of calculations by yourself. The energy stored in supercaps is very small compared to a battery. The only benefit you will get in this setup is only for the first one to two seconds. The rest is all from the battery... Yes the caps can be connected with the battery 24hrs and it can charge to the same voltage of the battery multiple times. And since it is always connected to the battery it won't discharge below the batteies voltage.

[@perry2281]

I like

[@diysustainableliving2774]

Thanks!

[@mhamud937]

What is full amp? 6*2.7volt 500 fared capacitor

[@diysustainableliving2774]

When capacitors are in series you can get one amp for every volt you drop. So 500F in series is around 83F. So you can get 83A in one second or 1A for 83seconds and the voltage should drop from 12 to 11.

[@makarovteamrekta2957]

Pede ba ito sa hybrid?

[@diysustainableliving2774]

Please can you ask your questions in english! Thanks.

[@kennith.]

Here is a nice soft starter that you can also try. kzbin.info/www/bejne/Z36ziGSaptqfjdk