Amen To that, he is a treasure.

With these types of batteries, a power inverter might not be required. Or at least, an often expensive electronic power invertor might not be required. Electrolyte could be pumped between different cell configurations in order to provide different voltages/amperages as needed. Potentially, many (or slow), very low voltage chargers could charge the electrolyte, then the same electrolyte could be pumped into cell configurations that provide 100v+ or 1,000v+. When depleted, the process could be reversed and recharged.

​@@RiverMerseyThe inverter is to convert DC to AC, more than to act as a voltage regulator. Regulation is a secondary function. How many DC appliances do you have at home?

@@alexmanojlovic768 almost all my home appliances are DC - including my washing machine with its universal motor!🤣

Most all appliances run on DC they all invert ac to DC from plug before powering internal components💯💯

@@wesleycastner4860 Yeap, I wasn't joking!

Boiled barley will turn to a foam like carbon: if you boil it long enough. If I were to powder barley in a coffee grinder would that also be a good material?

@@reypolice5231 Sounds like a fun experiment. Maybe even try adding a yeast culture into the slurry right before adding the clay (to create CO2 bubbles) You should be able to mould it like bread/clay before drying and firing, but the pores may increase the fire time to minimize cracking (also depends on the ceramic powder you choose) Ceramics shops have some glazes that can be great for making batteries too... black nickel oxide and ochre (iirc) on opposite sides would make a NiFe battery if soaked in drain cleaner (the KOH/NaOH type)

That's a really funny idea! "Carbon reinforced" ultralight bricks. I will buy a couple of clay brick molds and see if I can make yeast puff up a clay/dough mix. 😂 If successful, you might have a product on your hands. Clay-Doh! 😄

I was thinking... would perlite or zeolite be possible? Keramzyt? They are porous minerals ....

@@ewanowakowska4807 They need to make that "Cup shape" in order to hold the zinc.

Haha I just posted the exact same question, moments before seeing your post. A relatively cheap DIY off grid energy storage would be a game changer.

@@akumabito2008 Ummm me too. I like that it is slow. Where I am at 8k feet we get a lot of sunshine in the summer but it never gets too warm so we don't need air conditioning. It would be nice to store that solar for winter when we need lights and heat and stuff. If it takes 6 months to charge and 6 months to discharge that would be perfect. Have plenty of land so size(so long as it is safe) is not an issue.

I'll use 12 IBC containers(to get the voltage) if there is a way to do it safely. I would even encase them in concrete. This is just potentially so valuable depending on how long it will hold a charge.

And you should count them out individually, to make sure you have them straight. Count them twice, to be sure.

​@@colfaxschuyler3675Use tweezers....

Wikipedia will help you.... 15 - 65 Wh/l

Each cell like this is 1.8V, so you'd need 7-8 cells to make a 12V battery. If you had space for 7 IBC's and could deal with the hydrogen offgassing, you could.

could you just save the charged electrolyte in separate ibc tanks?

Long story short, not in a DIY manner. Storing this amount of active bromine requires special permissions in most legislations. An accident or breakup of one of these tanks would create a danger to everyone around, up to even a distance of several hundred meters.

I Think it would be nice to replace my water-heater with batteries and instant hot water. Would not need to go trough an inverter either. Only downside is that the battery would need to be able to deliver something like 10-15kW for around 10 minutes. Additional use would be to shift loads(and add an inverter), as electricity tends to be most expensive in the morning/evening, and cheapest at night.

@@MalawisLilleKanal I'm 100% off grid electricity wise..I have both a normal electric hot water tank, and a propane instant hot water system..Neither requires anything close to 10-15 thousand watts, not sure what your talking about there..The average water heater uses 1,125 watts, little over one kilowatt, only while heating the water..I have installed a hot water heater once that consumed 4000 watts, 4 kilowatts, but that was a commercial situation, with a huge tank..Maybe you mean without an inverter, but, why not have an inverter..The all in ones are cheap and reliable these days..A 3 thousand watt all in one inverter could run most things in a normal house, if you use only two high draw items at once..EG4 sells one for $674, very reliable, the 6000watt models are around $1,200, and they all include a real solar charge controller that can handle between 5,000 12,000 watts of solar and an AC charger..

@@realeyesrealizereallies6828 I am thinking of an instant hot-water heater instead of the regular water heater that sits in the basement and looses about 25% of the heat to the environment every day.

Maybe it would work as you say. But the material that settles at the bottom would need to reintegrate back into the solution I think. So just built several of these, and not deal with the mess of pouring it out? He did say that it can be gelled as well.

@@reypolice5231 Where I work uses forklift trucks that have interchangeable lead-acid batteries. Each battery weighs about 800kg and are changed via the use of an electric pallet truck. My thoughts are, it would be ideal to instead of changing heavy bulky battery units, just pump the electrolytes around as required. A forklift would benefit from the weight of a bromide battery, compared to a lithium battery. Of course, the pumping hoses would need to be robust and highly leak-resistant. Having looked at this elsewhere, apparently something similar is called a "flow-battery" and an Australian company called RedFlow have been doing something along these lines for about 10 years

@@RiverMersey Yes it might work as you say: but people are prone to accidents. Lead acid is not safe, but not prone to a hose that can break or leak on a forklift. Some companies do not maintain their forklifts very well sometimes. Large Stationary off site like Rob said is advised.

@@reypolice5231 yes, I fully agree that pumping lead acid around isn't safe! My apologises if that is how my comment came across! What I actually meant was pumping bromide solution as the electrolyte between 4 tanks - 2 tanks at the charger, and 2 tanks at the consuming circuit (in this case, the forklift). Charger's pair of tanks would receive depleted electrolyte into 1 tank, charge it up, and store it in the other tank. Consuming pair of tanks would do the opposite as the electrolyte becomes depleted of energy. When the consuming tanks were completely depleted of energy, a hose would pump newly charged electrolyte into the consumption tank and pump depleted electrolyte back to the charger. Yes, over time there will be corrosion in the electrodes (clean and/or replace them) and the electrolyte will need filtering/cleaning. Only with practical use could we determine just how frequent this would need to be addressed. Every fueling system carries risk. From my very little knowledge of bromide, don't drink it and wash hands after fluid swaps it should be good enough to be safe.

Nice ! Was it intersting as insulation pannel ? I'm looking for an easy and cheap recipe to insulate my roof...

I was thinking plaster of Paris as well. In the world of bug collecting people use a jar with plaster of Paris on the bottom to soak up alcohol to dispatch the bugs in a way they dont get ruined by soaking in the alcohol or curl up too much.

@@AutoNomades A good panel insulation mix was styropaperaircrete. I'm planning on pouring it in my garage walls

@@AutoNomades if you used aerated plaster of Paris it would make an awesome insulation. A little brittle but you might be able to add shredded paper to stabilize the mix.

mmh, nice idea ! better than aerated ciment or other binder ? @@HergerTheJoyous

Sounds toxic and dangerous and volatile

American penny's. Mostly zinc.

well the zinc has to move through the gelled medium no matter what, so it wont be faster, it would be slower. Gelled car batteries have to have thier plates closer together to compisate for that as well. This is defenitly a battery chemistry made for mass storage and slow charge and dischage cycles. Whats important is its achivable, DIY friendly (well freindly enough bromine does have hazards so does hydrogen), and it works. Rather then look towards speeding up the chemistry; look at multiplying the force, and automating the charge cycle for automatic charging. By mulitplying the force I mean many batteries in series and parallel till it reaches your use demands. As for automating the charge cycle, you want to clamp amperages while allowing voltage to vary until you detect the charge cycle has compleated, or just before it has compleated. There are lots of ways to do this, and each method will vary depending on your set up, and technical skills, but I am sure you can do it, you just need a measure of your battery's various voltage requirements to reach your desired amperage. Because DC motors work by vayring the voltage you have your choice of neat treats to get your stable amps. Now, I personally use 3 phase electrcity for my tools; so I would already have to take my dc output and transform it into 3 seperate phases and consider capacitors for shock loads, this has some advantages because various types of rotery motors can take various inputs to deliver various outputs with simple mechanical and electrical devices capable of clamping amps or volts. So I know what pathway is simplest for me, I already need that pure sinewave humming at 60Hz, I can just make a modified rotary phase converter with two seperate DC inputs; one from battery cells and one from energy harvesting and alongside some simple mechanical switches I can get charging and discharging all sorts of willy nilly and all at once. But I will need more complexity for load varyiance and charge varyance. Not too many people have need of powering 30 kilowatt motors at home! And at such energies it is generally lower losses to run mechanical conversions. A micro-controller would probably be the easiest method for most people, but perhaps a scaled down verson using various motora would be best, particularly if you need that sinisiodal wave on your power band like I do.

@@AnonymousAnarchist2 Thanks for the recommendations. Do you think that there might be any benefit to including a Stirling engine driven propeller (assuming that enough of a temp. diff. exists) in the electrolyte to aid in diffusion during charging?

@@synchro-dentally1965 I would not see that as an benfit. The electric charge is the motive force moving the dissolved materials to thier respective nodes (anode and cathode) Sapping the energy from that to generate turbulance probably would just complexity, and inefficency. But. You are getting into stuff I have never tried, and wouldnt want to because I would have no benifit. so. Maybe? You can set up a simple experment and see how turbulance effects charge and discharge rates, there might be something else electro-mechanically at play with this battery chemistry.

As you say, gelling might keep the bromine around the electrode...which might slow down the charging by preventing electrolyte contact. Seems to have pros & cons (all hypothetical oc)

a company called redflow make them

I'm pretty sure if you remove the zinc there is no discharge. I could be mistaken.

Recently discovered that KZfaq now gives warnings for video titles, descriptions and comments that include URLs! My thoughts is that it could be possible to charge the zinc bromide electrolyte at one location, pump it into a tank, then use the electrolyte in another location. Each location could be running at different voltages/amperages but use the exact same electrolyte! When the energy is depleted at the remote location, the electrolyte could be returned to be recharged.

Right now almost certainly LiFePO4 prismatic cell batteries.

I think that the specific energy will be around 40 - 80Wh/kg

I think you would need a matrix of them in combined series / parallel configuration to increase the voltage to a useable value and the current draw to make it viable too! Like Luke's saltwater battery.

The design is the same,.... the only thing what you need to do with iodine version is that you need the + electrode on the bottom that the iodine will collect on the top surface of the electrode.

@@cayrex thank you!!

In a previous video on these, the life cycle I believe he said could be limitless. It was at least as long as a Li-on battery, I'm pretty sure.

@@Lawrence_Marks TY

@@Lawrence_Marks yes, and apparently these don't have any memory-effect type problems or degradation of performance over long periods of time

The lifetime of these batteries is NOT limitless. Hydrogen evolution increases the pH of the battery, which creates a lot of side reactions that lead to degradation of the anode and also formation of bromate in the battery. You would need to continuously lower pH with HBr in order to prevent this from happening.

You can find some without the hole, they do make and sell them.