Replacing My Car Battery With Capacitors! 12V BoostPack Update




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Penfold 'OoO': How much money would a capacitor-based car battery save you? An often-quoted number is that hauling 100lbs around in your car adds 1% to fuel consumption. If you remove a 30lb battery then you save 0.3% of your fuel bill. If you are spending $50 per week on fuel (the average for Australian drivers), this adds up to $2600 per year. 0.3% of $2600 is $7.80 per year in reduced weight leading to better fuel economy. Capacitors can be recharged hundreds of thousands (to millions) of times, unlike lead-acid car batteries which will be dead after one (or two) thousand cycles (at the most). If you replace your lead-acid car battery every 4 years, you would have to change the equivalent capacitor-based car battery every 400–4,000 years. So, in effect, you would never need to replace it (nor would your children, or their children, or their children...). Since a car battery might cost you about $100 every four years, you are spending $25 per year on lead-acid car batteries. A capacitor-based car battery would thus save you $25 + $7.80 = $32.80 (on lead-acid battery replacement costs and in improved fuel economy) each and every year. Over the course of a 50-year driving career (20–70), you will have saved 50 * 32.80 = $1,640. If, on each anniversary of installing the capacitor-based battery, you added the $32.80 you just saved in the previous year into a bank account earning 5% interest, when you retire from driving you would have about $6,900 sitting in the account. Give the battery (and the account) to a grand-child and get them to do the same, and they would retire from driving with $85,600 in the bank. If your grand-child does the same thing, then your great-great grand-child will retire from driving, with the exact same battery, 150 years after after you built it, with $989,000 in the bank... Great-great grand-dad sure was a smart fella. Moving away from lead-acid batteries makes sound financial sense, provided you think ahead far enough.

electronicsNmore: Impressive since the capacitor bank is rated 16.2V / 58 Farads.

deadboy600: Sure it starts a mouse engine in a Scion. Try that crap on a V8.

joe a: This here ladies and gentlemen... is how you destroy your alternator and possibly much of your electrical system.

Nevets: Someone needs to strangle your rooster...

Fennecbutt: And what if you want to use your lights or stereo while you're parked? Oh wait, this is America...you just leave your gas guzzling Hummer idling...

craig zale: Love the farm animals in the back ground saying "Don't do it it's a trick!" What does this do for the charging system strategies? How about baseline reference voltages. It's your car good luck, we will be watching with interest. You may want to buy an extra fire extinguisher. 

Cynthia Avishegnath: Low end lead-acid car battery = 12V x 24 Amp Hours. = 0.15 cubic foot = 18 lbs = $65 Lead acid cannot be discharged below 1/3 (33.3%) without damaging battery. Therefore effective amp hour ~= 16 Amp Hour @ 12V. ============ Compared with ============ 12 V x 1 amp hour = 5 x 2.4V (overvoltaged at 2.7V) x 3600 amp seconds = 5 x 3600 x {1 Farad 2.7V boostcaps} = 36 x { 500 F 2.7V boostcaps} That is presuming we overcome the series capacitance being reduced by using a regulator/switching circuit. 12V @ 16 Amp hour = 36 x 16 x { 500 F 2.7V boostcaps} = 576 { 500 F 2.7V boostcaps} = 576 x 0.0028 cubic ft + spacing allowances ~= 576 x 0.003 ~= 1.73 cubic ft = 576 x 0.15 lbs = 5.4 lbs + 2 lbs of harnessing frame + 1 lb of charging/discharging regulator / switcher = 8.4 lbs = 576 x $15 = $864 + $50? homemade regulator / switcher + $?? homemade frame. Without the regulator / switcher, you would have to multiply the number of boostcaps by 5, which would make your supercapacitor battery-replacement array heavier than the battery being replaced. Not to mention the size. The regulator would be a 2.4 V - 12V step-up / step-down charge / discharge. Efficiency of regulator = 90% ? at most ?? So you have to add 10%, 15% more boostcaps to compensate. The alternative without the efficiency loss is an intelligent parallel/series charge/discharge switching circuit. Also, you SHOULD NOT charge boostcaps in series without a balancing circuit across them, to ensure their 2.7V individual threshold is not violated. The balancing circuit will cost you either efficiency (passive cct) or extra money (active circuit). You seem to be oblivious, not only to the reduction in capacitance but also to the damage you are risking in charging the supercaps, when placed in series. Hours of happiness constructing an expensive over-sized battery replacement = priceless. Damage due to charging boostcaps in series = ??? ===================== Now compare with $350, 150 Amp Hour, 100 lb, 0.75 cubic ft high end battery.

David: Don't let any troll skew you to think this cannot be made cost effective. The industry has a reason to keep YOU dependent.

Pedro Bermudes: capacitors, the new battery.

Flight Monkey: This is really Cool !😎

TheLuismondo: Capacitors in series divide the value of 1 of them by the number of capacitors (if they are the same value) Capacitors in parallel multiply the value of 1 of them by the number of capacitors (if they are the same value) So if each one of them is 350Fs and you have 6, you can either have 2100Fs in paralel (you need them to be rated at more than 16 volts) or 58.3Fs in series.

TheSoxmania: I'm thinking of slinging 6 of these into a pack to make a rechargeable cell for a 100W flashlight.... anyone think it'll get as impressive a life as it would a recharge time??

DJ Dragon: Has anyone actually done the math to replace a battery with super capacitors? For the record it would take a super capacitor bank of (let's use the maxwell 3,400 farad 2.85v at around $70 each) 43 super capacitors totaling over 146,000 farads to equal a small 12v 40 amp hour battery. (Most of today's cars use between 60ah and 80ah battery so basically double my example) That's about 9 parallel circuits of 5 supercaps in series. That's a lot of money. That's not even counting the extra circuitry needed for proper charging, discharging, and voltage stabilization. Sure in the old days when a car only had a starter and and ignition coil and some lights this would be useful but not in today's cars. Cap banks are good for jump starting a car with a dead battery. I have one from Snap-On that fits in my pocket. 

twistedyogert: Batteries have poisonous chemicals, could boostpacks replace traditional lead acid batteries

lerch25: It might even be better for the computer because it should really flatten out any ripple coming off the alternator.

Hari Haran: I am going to replace the 2500va diesel generator's battery with the boost pack can you pls tell me how to do it ??

Kneedragon1962: Capacitors are great for producing good cranking amps. They're not quite so good if you need a little more - like the thing doesn't want to start and needs 20 ~ 30 seconds of cranking over. As long as the engine fires up straight away, it's great. Don't listen to the radio for an hour and then expect it to start though... Make sure the switch for the light in the boot works... and I have some doubts about how long it will stay charged for. Old style batteries can also go flat over time, but I have a feeling it's a bit worse with capacitors. His sat for a weekend, but those capacitors are brand new, and I would hope he made sure there was no electrical drain while it was switched off. Many cars do have at least one thing on all the time which draws current, some have several. Many modern radio / music player things will need a PIN to restart after all current is removed - they think they've been stolen. But keeping them powered up takes current. What about a car alarm? In other news today, a couple of guys at Stamford University have discovered how to make an aluminium battery, which doesn't quite give the same voltage / energy density as a Li Ion battery, but it's in the ballpark. In every other way, including cost of manufacture, weight / density, safety, it's massively better. It is flexible, and unlike a Li Ion battery, it can't burn if there's an internal short. And it can be recharged very quickly.

Marcos Borges: mmm, se me ocurre algo, y si pusiera en sistema con ladrón de Jouly para autocargar los capacitores, ¿funcionaría?

Jacques Poirier: when the engine runs, the battery acts as a damper and a reference for the alternator regulator. If you disconnect the battery when the alternator is charging, the regulator sends full current to the alternator field coil and the alternator delivers as much voltage than it is dynamically possible well over 14 volts and every component not bulletproof will fry it is a cheap insurance to keep a good battery in the charging circuit

Alexander Pivovarov: Replacing My Car Battery with Capacitors! 12V Boo…: http://youtu.be/z3x_kYq3mHM

Derek Kick: Notice its a small car nothing Special about in it 

Leo Etcheverry: How was it after use ?

T Oadaly: Pretty cool, as long as you don't try running the lights and radio off battery. ...most people don't anyway, but know that you really can't with these. 

Loren Husky: Damn man. My car won't even think about starting on 10 volts.

Davin Yap: Good idea, but if the engine is suffering from a crank, no start issue, i don't think the capacitor has any juice left after a few crank cycles.

Jeff Evenson: 30 years ago-on a 650 BSA Thunderbolt, I got tired of changing battery's due to the vibration where I rode, so using only 1 large Capacitor with a zenior diode and it always started on one kick. What the trick here is to Use them like he does, but with the battery as that way the battery and starter will last longer due to less voltage drop on first crank.

HunChem: I see the point of this, but... I have one little thing that came to my mind. In winter, when the temperature drops below -10 °C (that should be like 10-15 °F) will the caps be able to keep up their charge and capacitance?

Lucien Macrose: What I want to know is.......what did the hens have say about it? :-) 

Onofe Eromosele: I wanna buy some eggs, please!!

Mallrick: well i dont think the alternator will charge this..loll but if your baterry is dead and u dont have anyone to boost its realy nice!! i need 1 for emergency

Stephen Furr: I agree... I saw the terminals on the other end getting close to the steel battery mounting plate and thought "That would suck if he shorted that to the frame." Then he wrapped it in a sock to insulate it. (Face palm)

Sven nniss: That's cool but totally pointless as one user said you'd have to charge the caps up so if your out for a few hours those caps will be long discharged and although caps can constantly recharge and discharge millions of times there's always a possibility of blowing or a faulty cap not lasting as long whereas a battery has warranty and 99% reliable. Also now batteries for cars become smaller and more powerful this is kind of useless. Though I've heard Mazda has capacitors they say when you break this charges the caps to use that energy to take off again? So it still has a battery, but it's not voltage you use to take off its mainly more fuel you use constantly stopping and taking off where 'coasting' to avoid this is more practical. Also test those caps while your driving at 110km/h the alternator will probably blow those caps, test using lights a/c sound system high beams those caps will instantly die

chrileman16: that's one quite ass car!.

John Wiggins: I have a new found respect for capacitors...

Adam Colon: I'm confused what the point of replacing the 12V battery with the capacitors. You lose the consistent reliable features of the battery. Is the upside simply that it's smaller and lighter? Is it worth it?

Chevez Ezaneh: So can I hook these up alongside my regular car battery? I have room for both and would just like to be able to start my car in -40c weather. My biggest concern is that the caps will end up discharging while i'm away as I usually let my car sit for weeks at a time. So that's where the regular battery would come in handy to keep the capacitors topped off. Solar panels arn't an option either because snow. Also, I imagine that I would need to hook this up in parallel with my battery to prevent doubling up the voltage?

Bram borgers: Bekijk deze video op YouTube:

Erick Claussen: i what to buy these BoostPack , were can i do it ?? pls link , thanks my friend

TheBikemaster94: what would you do for overcharge Protection? I plan on building one from Li-ion batteries using 2 12VBattery holders that take 8AA batteries each.

tomaramudarurls: 2:48 he's talking to the chiken

Llia Olsen: My question: At idle rpms, in traffic, at night, with lights on, raining, with wipers running at least half speed. Will the Alternator provide enough power to keep the caps charged under those conditions?

Anurag sharma: i just have two questions..... 1) what will happen if i park my cars in garage for 5-6 weeks with boost caps inside, will they be still be able to crank. 2) are they safe for alternator and other cicuitory, what if they blast up? what if they put extra load on alternator, what if they start leaking current?

Astarot Ash: The problem with using capacitors, while great an all. They have a tendency to lack in the long term storage department. They have a tendency to bleed off energy when the said energy system is shut down. 

Daymond Jones: Replacing My Car Battery with Capacitors! 12V BoostPack Update: https://youtu.be/z3x_kYq3mHM

Pixels303: 350 microfarads.. in series.. with 6 cells is 1/6th the capacity. Unlike traditional batteries, capacitors will decrease in capacity when hooking in series as the space between plates increases with added caps. It is a static charge, which I am strangely finding odd would start a car. Good luck holding the charge for extended periods of loads which modern automobiles commonly use to drain batteries. Not a great idea, but if you got nothing better to do, why not.

stonner2k: what would you have done if on Monday morning on the way to work it didn't start up?? would you have just jumped it with one of the other ones? I also take it you could carry one in the boot or trunk as you would say as a buster just encase you ever need a buster?

David: Current price for this is about $8 each. (At 2.7V) you need 5. Total $40 out the door. OR $110 (add $15 Calif. recycling fee) for lead battery every 5 years. Acid to your landfill. LEAD to your rivers/fish. Your planet? NO WAY HOZAY.
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Replacing My Car Battery with Capacitors! 12V BoostPack Update