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1) Where can learn more about batteries?
2) Where can I buy Lithium Batteries
4) Where Can I buy Solar Panels?
5) Where can I buy a Battery Management System
6) What parts do you use on your Samba?
8) Why not use Supercapacitors?
A. Batteries work better at this time, caps are rare and expensive devices that are very good at doing things not needed for storage systems typically.
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All right, so we got a palette of uh. These look like server batteries. Let's take a look at these and see: what's up with them, they look interesting, let's put them in the bench all right, so these seem to be panasonic's uh cells right because it's a panda's got a panasonic label um and there it's a 6.4 amp hour. So 323 watt hours, so it's not a huge battery pack but um.

It's a 50.4 volt right um! So it's a 14s! Now some of them have a rating. This one doesn't have a radian, but the other one had a rating of like 80 84, like 4.2 um kilowatt output, right um, which is about 81 amps. So it's got this connector over here. I wonder if it could do adx this one doesn't seem to have the rating, but the other ones do, and it's got this connector in here, which i i guess you know it's probably for a server of some kind.

It's got a handle in here that allows you probably to put it in and put it out. It's got this little thing that probably clicks boom and then it locks it there. So they look to be like some kind of hot swappable heart uh server batteries right. Let's take it apart, everybody takes the screws of this one, so we can take it apart boom, all right and here's the interesting thing about this battery.

It's got this labyrinth, um structure here, so it's got a fan, so obviously there needs to be able to have airflow through this and then it's also uh. It seems to have a screen over here on this side, and so you should be able to get air flow in here, but i guess this is to arrest some kind of flame if this battery were ever to blow up right or to do something right. So these i guess these get loaded quite a bit, and so i guess that's why you would have that right and then this is going to be in a server room, um and so because it's a server room. You don't want these all your computers to just to just blow up together with this one right, so it's got to be pretty safe.

This is ul listed um, it's got the listing in here and it's got things so this is pretty safe. It's pretty built pretty tough. Now let me take a look at the battery pack and those other stuff i've taken one of these apart already so that we don't have to do it uh again, okay, so here's the one that i already took apart. It's got pretty beefy cables on the inside, i mean these are like six gauge uh silicon wire, plus they have this other external uh sheeting in here.

That is probably for temperature right uh. The connector also has these big wires in here and then here's the assembly with the uh. Well, this is a network connection right, so there's a port so that it can connect to a network and then that's how you use them now, the fortunately this is probably proprietary, and so i don't know how to use it. Here's the bms system right and if you look in here, it's got uh these interconnects in here it's got a 100 amp fuse right and then it's got eight of these mosfets.

I guess it's supposed to be able to carry about 100. Amps continues right. Um. Then this is another logic board and then it's got a big old.

You know bus bar there right the rest of the stuff is just a bunch of uh screws and fasteners, so you can put it together. Now, let's look at the battery. The battery itself is here, and here we go um when you take the cover, so it's got two covers look, it's got the bms board on here and then it's it's got covers and then a cover when you take the covers, then you're exposed to the cell Terminals right and these seem to be pretty beefy enough to carry a hot. I mean they're, it's beefy, but not, i don't know 100 amps uh and then look at the structure here.

So they're going to only two of those little things and it's all. Every cell has got four of those welds, so the configuration is four cells in parallel and then 14 in series. So this is a legit uh, 48 volt battery, so it could be used for any 48 volt uh application in the d and the e-bike world. They call that 52 volts right, but for the rest of us, uh, energy, storage and stuff, like that.

These are legit 48 volts. It will work with any 48 volt inverter for uh. You know off-grid, use and stuff like that um. What's something else interesting, oh yeah! So this board right here, so here's the interesting thing um, because this is proprietary we won't be able to use this board.

That is for the bms. But if you take it apart, i took the screws off check it out. So you have access to every single one of the um: well, the so the cell terminals right, and so, if you wanted, we could design a board to put our own uh third-party. You know off-the-shelf bms and you just we just have to you, know uh measure.

This we've done this in another battery um and then you just replace that in here and even if it's just a what we did, it was just a breakout, we're a simple breakout board. So it's a board that we put in here and then uh all these would end up in a connector out here that you can put a cable, then you can put a bms and then connect you can you know uh attach many of these batteries. You know uh together in parallel, and so that's what you would need a simple breakout board um. So that's the cool thing about these.

You can do that or you could just literally just make uh cables with um. You know ring terminals, and then you can screw that in here and make that you would put the uh bms somewhere in here. You could, you know maybe yeah you could attach it to this side over here and then you can use this battery. Put it back in that box and then you could build a powerwall.

You can build some um. You know backup system for your computers or something like that right, uh anyways. These are pretty cool cells. I don't know what cells they are because there is no way to look at them: they're, pink, they're, panasonic, pink.

If you know of any other panasonic pinks that can do about 20 amps each do let us know post it in the comments in there. I don't want to destroy this. This is a beautiful battery and there's nothing wrong with it um so yeah. This is pretty cool.

We have a pallet of these, so they're we're going to price them. You know uh in a way so that they could just move right. We we are in business selling batteries, we don't want to store them and so the faster we can get them at the door. So that's why i uh sell them cheap right, because that way i can buy more batteries.

We can get more in here and you know so so this is completely for like a diy project because you won't be able to use them. I don't know. Maybe someone there's a reason why these ended up here, i don't know, sometimes it's because their their usable cycle life is done right. So, for example like if they're used in a hospital um, you know, i think hospitals change their equipment, whether it needs to be or not every two years or something like that, so these were used for backing up files in a server room in the hospital.

For example, then that would end up. That would be the reason right, so there might be most of these or all of these i don't know a number of these might be a hundred percent in working order right and the only reason why they ended up in our hands or on recyclers hands, and Then in my hands it'd be because of that, but there also could be some that have some issues right. I did see on a couple of them that it says, like you, know, rework or something and said like look at it or something like it had some kind of an issue and they wrote some phrase in there. That would let you know, but for the most part, these don't have any writing in there, and so we don't know why they ended up being uh sent to us.

So these are i'm it's a small load again like with these small nodes. I don't want to spend too much time on them, and so i don't check them, i don't test them uh. I usually don't design a thing for them, which is kind of. Let you guys the diy uh crowd within my audience.

To kind of take, you know, take advantage of something like this and then make build your own stuff with them right um. When we get the bigger loads, then we do more in depth and we, you know we'll make a board we'll make a connector we'll figure. It out we'll figure way more out so that it's uh a much better, complete product kind of plug and play close to plug and play. There's always going to be some diy with our batteries uh and with our products and stuff right, but uh.

But we get closer to like plug and play with the larger loads right. This seems to be just a little load, you know just a you know, a pallet, and so there we go panasonic server. Ul listed uh can do about a hundred uh 8081. I think i think 81, that's the rating on this on the other ones.

This one's particular don't have a rating, so the ones that are panasonic and i think because the other ones are lg cells, but the one but you're gon na get these ones. Uh. We'll separate them so that uh you'll get well. I guess i won't say that no guarantees that you're getting panasonic cells in them, because without us opening every single one right uh, we can't guarantee anything because there could be different cells in there.

You know they could be not 18650s but 2170s. Sometimes these packs look exactly the same on the outside and then on the inside uh they're completely different. That's what we're seeing with all the e-bike packs right on the outside. They look identical, but on the inside they have a completely different cell.

Some have pouches and have cylindricals something that goes different sizes and that sort of stuff all right all right. So if you're working on a 48 volt, uh, powerwall, backup battery system or an e-bike or something that requires like four kilowatt, that is very light, and the guy is four kilowatt. This, probably the the perfect pack for you right. So there you go they're gon na, be at

Thank you for watching this video we'll see you guys on the next one. Bye.

6 thoughts on “Hot swappable 48v server rack lithium batteries”
  1. Avataaar/Circle Created with python_avatars Juan J Dume P says:

    capacity check them

  2. Avataaar/Circle Created with python_avatars NM88310 says:

    it would be great if you would configure that to work with a Growwatt 3kw offgrid inverter

  3. Avataaar/Circle Created with python_avatars Aliyu Muhammad says:

    Pls how much is it

  4. Avataaar/Circle Created with python_avatars Juan J Dume P says:

    the data in that server room is so important that this crazy battery happened, pretty cool. important porn folder.

  5. Avataaar/Circle Created with python_avatars Jaime Zaragoza says:

    You have a typo in item’s web page.

    Nominal Power: 4.2Kw <——
    shouldn’t it be 4.2 V ?????? 😆

  6. Avataaar/Circle Created with python_avatars A E says:


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