All right, so i am still kind of sick, but not sick enough to not talk about battery. So let's talk about batteries. I want to talk to you guys about these batteries. In particular, they are 6200 milliamp hours, pouch cells.

They are 50 c, which means that they can put 50 times their own capacity, which is some crazy amount. These are super duper batteries right. These are super batteries right here, uh, 22.94, so almost 23 one hour, so they're not huge. I mean they're like almost the equivalent of two 18650s right and they're about equivalent size, so they're not too bad.

They come like this, and i've talked to them about them before uh on my channel, because i got this last year and it's it's a small amount. We don't have a lot of them right uh, but we do have enough to build some cool stuff. Now we've been we've had these on the website for a while, but since i've never really made a video talking about how you can build a pack with them uh, then i think people haven't been buying them too much right. Only the people who know what they are and then what they need.

So these are very specific batteries, like not everyone needs these right. These are batteries that can give you their energy uh at 50 times their capacity. So so these are power. Batteries, power dense batteries right, so what i ended up doing is.

Let me show you here, one of the interesting things about these. It's uh, or one of the reasons why i hadn't built something like that is because these are kind of dangerous just because of the the fact that they can push so much power right so check this out. Uh something of interest here is that the positive is made out of aluminum the positive terminal right. The negative is right here.

It's made out of copper. This is made out of aluminum, so they put another little copper thing at the end, so that you can solder into here these the only way you can assemble these is, if you can solder into them, they're not like 18650s, where you're trying to figure out some Way to weld or whatever so what i ended up figuring, what to do is to just push it in like that and then all of a sudden. Now you have copper here and then i have copper there and now you can solder into a board - and i made these boards in here to be able to do that right and so then you just slide them. They have these little holes in there and then you.

This is the positive and i marked them all positive and negative, and then you just push them in there and then you solder them. So this is not my idea. This is a thing that people have been doing for a long time. They've been using pcb boards to solder into flat tabs on these lipo style cells right and uh.

I just wanted to try it and see i. This is my first iteration i kind of make. I think there's some improvements that i can make and i'll show you we'll go through those right now, but i just got those and then i got working on making the battery, and this is what it looks like. This is a 14 s, 52 volts right or what the e-bike world calls a 52-volt battery for everyone else of 14s.

It's a 48 volt, but in the e-bike world it's a 52 and you know the reason why i call it 52 is because this is probably really good for a for a high perform super high performance, e-bike pack right and so e-bike project um. Now, what is the 50c mean right? This is 322 watt hours right, so it's not the biggest battery that exists right there. There are usually about twice as bad for most of these e-bike batteries. They start somewhere around half a kilowatt.

To like one kilowatt. This is, you know, 0.3 of a kilowatt right. So if you add two, then that's about 600 uh watt hours so 0.6 of a kilowatt right. So so, but the interesting thing is that the this thing could do get this at 300 amps at 52.

Volts! That's 15 kilowatt. This thing is capable of 15 kilowatt output. That's a huge amount of power, i mean even to test it. I'm like how am i gon na test that uh the biggest inverter that i have here is an eight kilowatt inverter.

So that's not even enough! I would need to have two of those inverters just to test this tiny little battery here with enough to see how this bm this this pcb is gon na handle the 300 amps right so th, that's where this is at 15, 000 watts this battery here can Do that much right, so i don't know it's hard to wrap around your mind how much energy is possible here, and so it is kind of dangerous when you're soldering in here, because if you short it out, you know you're going to see 300 amps. You know, and it's everything's going to melt immediately, so you kind of when you're putting this together. You kind of can't make any mistakes uh, and so that's why i'm putting a lot of attention on how i'm building this pcb board to help you prevent any kind of mistakes you know, and so what you end up doing is putting the the tabs in there And then soldering them, you know and then immediately covering them with the captain tape. And then you know you do the other one and then you sort of do the you know and that's sort of you go like that way right, and so how do you? What do you do after you're done with this pack, though? Let's talk about that rail? What about the bms right so here are all the uh.

The balance leads right. I put this little connector and this is one of these connectors that we've been using of all the other projects and stuff, so it's kind of a known connector for us, and so that's why i ended up using that. Well, let me show you if you wanted to use a bms and maybe why you wouldn't want to use bms here is a 200 amp bms. This is sure this is uh 10s right, but they do make a version.

That's 14, as 200 amps and i mean look at it - it's it's literally! Well, it's a little bigger than the battery and look at these cables, they're, so giant right now. Why are these so giant? And i think the reason why is that is because this is made for a 200 amp continues right, and so then you need these beefy cables to be able to continue right so um. How is it possible that this tiny little uh bus bars right can handle 300 amps, but this thing needs this giant cable, a two, odd cable. Well, these are not rated 200 300 amps continues.

Those are bursts right, so you're. If you load this battery with 300 amps, it's only gon na last, like a few, a few minutes, maybe a minute or two, you do the math right, like it's not going to push. So these are going to get hot, but they're not going to melt, because these are rated for that right. So you they wouldn't build a battery that can put out 300 amps but the the uh.

You know the little terminals bus bars coming out of it would melt way before that. So obviously these can handle the 300 amps for an x amount of time a few minutes and then, after that the battery is completely dead. So then you're moving on right. So now that the only thing to do is to test to see that this stuff, that i'm doing here can last uh, you know - can withstand 300 amps for about the same amount of this one right.

And so what happens? Is that? Because the bms would have to be so big, these packs that are at this, you know level or whatever you usually don't end up using um bms systems on them. What they do is they build them in a way that you have all the leads uh out. Uh so that you can balance charge them, and this is something that, if you come from, if you have an experience in the rc world, you completely understand this concept. But if you don't, then it might be new to you and so here.

What i have here is it's uh, showing you two chargers that are made for our drc world and this one six cells - and this is eight cells, so together would equal about 14 cells, and so what you would do is make a cable, that's special. That goes from here, and then they go into the balance leads of these two and then you would go uh from the positive to the negative and then the the two outer positives and negatives. Then you put in here and you that's how you could charge a 14s um battery using two of these chargers. You could totally do it with discharges and you can charge at about a rate of a thousand watts right.

So so any the balancing that the bms would end up doing on a traditional battery. These things do it: they have the bms built in here and they just balance the cells as they're charging and so you'd have to balance charge this battery every time right. So that's one way to do it and then now you just have a connector from the main terminals and then you go to your load and that is usually what ends up happening on an rc uh project. That would use something like this right.

So you skip the bms, because the bms would end up being so huge and so big, and you know that it's just it's not feasible, or it's just better to not use it just to use the bms only on the chart side of the thing right. So now that you understand that, let's look at how we can improve this further and then make the changes on our uh pcb on our pcb software over there and then just do that right, okay. So this is what the board looks like right and then you can do the 3d render here come on. Okay, so here we go right, uh, that's what it looks like uh.

These are the traces right, so the energy on these pins. So there, the the current is not really traveling through the board. It's just traveling through a big lump of solder, and so the only way and the only place where the energy or the power is traveling through the board, is through these ones and the the reason is because they're separated by about 10 millimeters of distance between those Two right well now that i built the actual battery here and you can see it every time you get that now. I realize that i could just combine those put them really in the center of the two cells in here, and i can combine those without the need of having for them to having to go through this right.

And i did these little exposed areas of the um. With the copper there just so that we can build it up like this right, so it will handle. This is a common practice that people do uh, pcb makers use to be able to carry or handle more current right, but i realize that we don't have to do that. They can look exactly the same as these ones.

If we just combine them, put them push them together, and i didn't know if that was possible just to the way the cells are aligned, but now that i build it, it's like oh yeah. There is a way to do it. It wouldn't actually be that hard to do it. It wouldn't mess or interfere with anything, and so i can get rid of all this and make it much simpler and better cleaner.

Looking if i just combine those so let's so we can do that now. Um and the way we do that is well, let's see. So if we do this, so here is the first one and what we do is we just grab that one. So, let's, let's put a mark in sort of in the middle right uh there we go and so then what we do is we just move that there and then we grab this one and then you just move that one there look at that.

So here we go: let's move that one a little bit down here. Okay, so now we don't need this pad to be this big. Now we need this pad just a little bit bigger than the other and that area there, and then we definitely don't need any of these because well they don't need to be exposed like that right and then this is the the pad on the back side. So we just make it smaller.

Also, okay, now the balance lead is here, so we will need to go this way. Oh there we go that works so now that's connected in there huh, okay, so that's the first one right and now what we need to do is go to the second one over here and do it again. So all right and there we go. We just changed made those changes.

We moved all those and now it's gon na look a lot cleaner and there's gon na be shorter pathways, so you know there's less chance of the failure right due to such a high high power going to the pathway of these. The pcb material, so there you go, this is the 14s version. This could be made, you can add yeah, you can take four of these cells off and then that's a 36 volt version. You can add an extra well.

What is it like? Six right, 14 yeah? So you can make a 20s version of this, and then that's that would be a 72 volt uh version of this thing that could do 50 c. So again, remember this is not just your average battery to be able to power. Your average thing right, uh! Think about uh, a race car uh. You know a little car, maybe a go card.

You put some couple of these batteries, you put them in there boom. All of a sudden. You could right so what's 15 kilowatt, that's six horsepower! So each one of these could do six horsepower you, but two of them you're at 12. You do three four right: you're, like you know, car level, power, uh and so yeah.

If i put 30 of these in series, i could power my entire bus, full power. 300, well! No because it's 600, i would have to do 60 of these cells, could power my car full power right, 80, 72 kilowatt or something um so think about this yeah. If you're making some high performance uh e-bike! If you want to charge something really fast right, let's say you want to make like a little pack that you can charge your electric car. You know, maybe i don't put like a kilowatt of power into it, but you want to do it in five minutes.

This is the battery that would be able to do that right, and so, if you want to start some big machinery and it takes a little battery, this would be like a kick start. You know, like a jump, start pack right here. You could do these in 4s if it's a 12-volt thing right, but you know the other big machine or you could might require a different voltage, and so that's what this is, and so i'm going to make these available i'm going to make the different versions. You know the 10s 14s, the 20s uh 4s.

I guess too right now, uh and then i'm gon na put those in uh pcbway.com and then you can go there and download them. And then you can uh well populate your own batteries using these cells right here, and you can make the battery that you might need right if you need lots of power. Well, these these cells right here are as good as it gets. I mean you know: there are cells that could put more power than that, but not there's not a lot of them.

These are uh they're kind of rare right, and so we had a chance to get them get a batch of them that are brand new unused, and i think people just have not been building with them. Just because i think uh a lot of people. A lot of you guys are probably there that don't know what you're looking at me. Hopefully this will enlighten you a little bit and uh well, make it much more clearer what it is that these are and why they're so amazing.

So there we go uh. Hopefully this was somewhat educational. If you learned something then uh, i have succeeded, if not at the very least, maybe it was entertaining in some way or shape for another uh. I want to thank you for watching these videos and thank you for all your support.

Uh and we'll see you guys in the next one stay busy stay, uh building batteries, we all need batteries and if you know that then you're ahead of the of the curve you're the hate of the game, i think the average person doesn't know it yet. But there the need for batteries is coming and they're gon na have to either buy some and us that are building our own. Well, we're gon na be in such a better shape. To diagnose and to you know, just just knowledge is power right, and so there you go.

Thank you for that. We'll see you on the next video we'll see you bye me anyways what we you.

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