Replacing My Car Battery with Capacitors! 12V BoostPack Update

Testing to see if capacitors can make a traditional 12V battery obsolete. Plus an update on the original BoostPack.
BoostPack in freezing temperatures update video: http://youtu.be/GUXM1XuLUIs
More info and links to parts at: http://laserhacker.com/

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Автор Adam Keith (19 дней)
how are you recharging them? Im guessing the alternator would blow these

Автор ThinkingBetter (4 месяца)
It's a great shame that people don't do the basic calculations of the
energy involved in so many experiments like these. Car batteries are needed
because they provide much more energy headroom for ensuring the extra
energy needed to maintain power to the alarm system, remote lock when the
car is parked and for starting an engine in freezing weather.

Автор Lorne Thomas (4 месяца)
Any thoughts on this?

Автор bhstone1 (3 месяца)
How are you able to engage a starter and turn over an engine with only 10V
DC? Most starters won't engage unless you have at least 12V DC.

Автор Oliver Whinnett (3 месяца)
I don't get it. What's the point in this?

Автор cmares5858 (6 месяцев)
A mini boost pack would be great to have in the trunk as an emergency

Автор HardWayLearnt (5 месяцев)
At 0:40 how did you not get electrocuted when you touched both terminals? 

Автор Paul Handley (2 месяца)
This is a hoax. There wouldn't be enough current for long enough to start a
car. You can fool some of the people some of the time, but you can't fool
ALL the people ALL the time!

Автор Ken MacMillan (3 дня)
What's the point of this?

Автор ProgPalace (6 дней)
You wear the same clothes everyday? :)

Автор Ff Geoff (16 дней)
I don't pretend to know whether boost capacitors could make the traditional
car battery obsolete. All I know is that undamped voltage spikes can
destroy some very expensive auto electronics. By design, batteries appear
to play a role in circuit protection.

To his credit 'lasersaber' did carry out voltage drop measurements and
actually use the device in regular service. Could be a handy emergency
start booster if kept charged. Much more testing needed before you risk
your car or trust the device in cold weather.

But beware! Check your auto insurance policy. Exclusions often apply for
non-approved or non-original modifications unless first approved by the
insurer. Many modern cars are written-off after flood immersion due to
electronic system damage alone. This shows how costly a boost-capacitor
experiment could be if things go wrong. Amateur trials could void an auto
insurance policy in any claim for damaged electronics. 

Автор ThingsDemystified (25 дней)
How this device could be useful is if you're stuck with a dead battery. You
could use a solar panel to charge it.

Автор Ryan Toomey (1 месяц)
The capacitors should be hooked up in PARALLEL, NOT IN SERIES, because with
capacitors in series the total capacity is the reciprocal of the addition
of the reciprocals of each capacitors, giving you a much smaller total
capacitance value, smaller than the value of the smallest capacitor. In
parallel, the values of capacitors add up to give you a much larger

For example, if you have 10, 10 Farad capacitors in series, the total
capacitance value will only be 1 Farad, but if you have them in parallel,
then the total capacitance value will be 100 Farads.

Автор John Puccetti (26 дней)
All the new research is with capacitors. I think this is the future.

Автор TheSRBgamer63 (29 дней)
Easy to start warm engine lol,how about at winter ,also how about diesel
engines :P,that ur car have some small engine i guess,bigger engines will
need more power to start.

Автор Richy GC (4 месяца)
Bet it wont start a diesel :)

Автор whanson3503 (6 месяцев)
So, I stumbled across this and have a few questions. I drive a big ol '09
Crown Vic named "Vicky". I also live in the frozen tundra known to some as
"Minnesota". This year I was up in Duluth and it just so happened that day
it got down to -50. Now that's not unheard of, it does happen. I was also
running my car, ham radio and AM/FM radio for 14 hours straight. Yeah 14
hours without turning the vehicle off. Wait no, I did once and that was a
mistake. Only a few minutes of being off, I couldn't start it. Which I
found odd because the battery is really only needed to start the vehicle
right? Well here is my list of questions if you could be so helpful. I am
really considering looking into your mini BoostPack setup with the attached
battery pack.

* Would more caps be better?
* If I had such a setup, would i have been able to do a repeat of my Duluth
trip and be able to start the car even after turning it off?
* What are the ranges of temps that these caps could tolerate?
* I also have the Goal Zero Nomad 7. I'd assume that would be enough to get
some charge back into the caps if I needed or if I let it just sit on the
pack constantly?
* If the vehicle were to die, then what?

Sorry to ask so many questions, I am just very interested in possibly doing
this. Thanks for the help

Автор ssuuppeerrbbooyy (5 месяцев)
Pointless to use this with a regular car.

Only hybrids and electric cars benefit from capacitors, because they can
store a lot of energy in short time, compared to lead acid battery. Then it
uses that as a buffer between the electric motor and batteries. Mainly its
used for energy recovery when you are braking. But that will be a thing of
the past with these new nanobatteries coming out (F1 uses them already, but
they are difficult to manufacture).

Автор InvisibleYetVisible (6 месяцев)
Does putting six 2.5v caps in series not cause problems? Thats 15v? Don't
cars only really have a tolerance of up to 14v roughly?

Автор apeek7 (5 месяцев)
Question: What happens to the charging semiconductors in your car? Lets
say you don't start the car immediately - you significantly deplete the
capacitor. At the last gasp the car starts...

Now you have an almost discharged capacitor drawing massive current from
your alternator. Are you at risk of damaging the diodes in the

Автор Protectprep (2 месяца)
Puny capacitors are for girly men.
This bank below is a bit manlier ….

Bank of 20, 450 Volt Nippon Capacitors.
Total Volt: 9,000
Total µF: 48,000
Weight: Approx 50#


Автор ThingsDemystified (25 дней)
So what's the verdict people. I don't have time to watch all the videos.
Can ultracapacitors replace your car battery for normal use?

Автор André Gm (5 месяцев)
can you fast charge it with a crank ? i mean capacitors can chage up faster
than a battery, so all you would need is to run the right crank.

Автор soloartist232 (1 месяц)
lol. yes there is hesitation. you near it crank twice before the engine
starts. my 2003 camry starts up like that too with a normal battery. if
your car was cranking 3-4 times before starting or crank slowly, it means
your battery is weak. there is something called a crank current. get your
battery tested. if it's too low it means your battery can't deliver the
correct current.

Автор stefco100 (5 месяцев)
make a dc-dc boost circuit 6 to 12 volts , get a 6 volt sealed lead acid
battery and use it as a hybrid 

Автор Andy Coakes (5 месяцев)
i wonder why motor manufactures are not using this technology already

Автор Trev S (5 месяцев)
They can provide about 300 amps briefly so yes they will work - if you
discharge them too much they are so power hungry they will read almost as a
short giving your car alternater a real hard time

Автор Dave davidson (2 месяца)
Good experiment.
What he didn't say was that in engineering, you have to give up some
characteristics in order to gain other more desirable characteristics. If
he doesn't go anywhere over the weekend, the car will be dead. Also, the
car had better start on the first go, because if it doesn't, it won't have
the power to try again. These are the luxuries he gave up for 30lbs of
savings. As the caps age, these characteristics may get worse. He also
shouldn't run the radio or keep the key on for any reason.

Автор BuzzFeedGuns (2 месяца)
So I can make this and toss my battery?

Автор Kobe Wild (3 дня)
that's great an all. but caps have a limited amount of charge..
leave your headlights on for 10 min's and you won't be able to start your

Автор eTechTom (5 месяцев)
I wonder what the long term gas savings is minus the battery weight? There
is also the savings of buying a new battery every 5 years.

Автор r trump (1 день)
I like this, try using the crystal battery set up though the lighter to
keep it charge

Автор geetarwanabe (3 месяца)
Won't the capacitors discharge if you don't drive for a couple days?

Автор WX9DX (4 дня)
I have a large Ham Radio Amplifier under my back seat of my crew cab. It is
amazing draw on the truck battery. Over the years I have had trucks that I
even put a second battery in just to make sure there was enough to run the
amp and start the truck. I used a home made second battery kit for
isolation when I added the second battery. Now I'm thinking using your
boost pack idea under the back seat in parallel with the incoming power
from the vehicle battery to help when the surge hits when the amplifier is
keyed during transmit. What ya think? Thanks for a cool video... 

Автор Phil Mylius (7 дней)
Hi Laser
Could you forward a link as to where to purchase these capacitors. i am in
Engaland and cannot source them on ebay for some reason

Автор costiqueR (7 дней)
I think that the people don't know that the batteries are just big
capacitors , having exact same behavior on same dimensions/capacity. Guys,
don't discuss about this, the differences between capacitors and batteries
are coming from their fabrication technology.
Capacitors :1 F = 1 s4·A2·m−2·kg−1 = 1A*1s/1V so for 2 V (14V-12 V
interval) you need 2 F just to have 1A current during second.
Car battery: 100 A·h can deliver 5 A over a 20-hour period at room
temperature for same 14V-12V interval..
Let to discuss about 55Ah common car battery. Normal voltage for charging
is 13.5 V maximum 14 V and the lower limit is 12 V so you have 2 Volts
potential difference to work. 55Ah means 2.75 A in 20h. To obtain
equivalent capacity from capacitors you need 2.75A*20*3600s for each volt
so result is multiplied with 2. Result? 2.75*20*3600*2= 396000 F (Farads)
In this movie we see 6*350F=2100 F which is 200 times lower capacity of
the car battery.
What means this? Simple. You can start your engine with a capacitors
module, but just if everything is perfect and you are sure the engine will
start from first attempt. Don't expect to have energy remains for the
second try...or let calculate: starting current is 20A so you need 20*2=40F
just to have energy for a second. 2100F (total)/ 40 F => 53 s of full
functionality. Not too bad but sure not to change the car battery. So ...
Car battery is strong recommended, you can have a capacitor module just to
help the battery or to start cars with depleted batteries. Don't forget:
car alarm and other electrical devices have working nonstop so capacitors
will be depleted if you don't start engine often...

Автор Laban Baxter (11 дней)
How long could that power a 100w inverter?

Автор danny miller (5 дней)

Автор bfgman422 (11 дней)
if u do this for very long you will be replacing alternators a lot because
it will work itself to death keeping the capacitor charged.

Автор Hector Lopez (7 дней)
hello mr.lasersaber does your mini boostpack still working as a today ?

Автор whopper dogs (13 дней)
Great video none the less.

Автор ThePokeLoVer (20 дней)
Can u teach us to do it and toturial

Автор 678friedbed (17 дней)
if your not getting enough current and amps you can destroy your starter
and cause electrical issues

Автор john wood (12 дней)
What a plonker..........he is either brain dead or thick as Redwood, too
many of these prawns making stupid videos of no material worth..

Автор sconnly86 (11 дней)
you forgot the fact that low voltage starts ruin starter motors, so the
money/weight etc you are saving by using capacitors is being wasted if you
let your car sit over the weekend and start it. There are minimum voltage
requirements for these motors, and low voltage starts over a period of time
will burn one up. If you use it every day though it sounds fine.

Автор Austin Pieschel (20 дней)
That is not very good for the electric system in the car. A car is designed
to use a 12 volt dc battery not capastors.

Автор Mind|Sculptor (21 день)

Автор Geri Checchi (18 дней)
I don't see why this Gentleman's Experiment don't work. I'm in heating &
air and all of our units, ac units, refrigerators, freezers ect....... use
Capacitors to start up the units, we even install Hard Start Capacitors to
give the units a Jolt of Electricity. Just saying

Автор Nicholas Fonda (13 дней)
Math Time!
- 40mA parasitic drain from the car computer systems. {energy your car uses
even when off}
- linear association of capacitor charge with output voltage (Ignored) {at
50% power they would only have 8V output}
- internal parasitic discharge of capacitors (Ignored) {a few mA per hour
are lost automatically}

40mA at 12V is 0.48Wh (watts per hour).
the capacity of the 350 farad Maxwell Ultra capacitor is 0.35W, six of them
is a total of 2.1 Watts

(2.1W)/(0.48Wh)= 4.375 hours=> 4hours and 22 minutes...

So how did you get the car to sit for over 48 hours (12 times as long) and
still have 10V of a charge, let alone start the car?

unless you have a manual disconnect for your battery + terminal (eliminates
the parasitic drain) this is impossible!

I call Shenanigans!!!

Автор idahormj66 (15 дней)
how many chickens to start a car, i wonder?

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