All right now that you've seen the expensive portable car charger, this one right here, let's work on our DIY version of that. So this is a rack similar to that one, right? There's just a different style. earlier. you know we put some wheels on there and stuff.

I've gone ahead and did some work. uh uh, be off camera and all I've done is basically installed these DIY um DC power strips. These are available at Jack 35 and they come as a kid so you can put most people what they're doing. They're putting uh, little Xt60 connectors in here.

but because of these batteries that we're going to use today, well, these work better the Xt90s because they are already. They come with Xt90s, right? So let's bring in the DIY batteries. These right here are called Ev4s and all it is is four packs from a Es2 or ES4 scooter put together right. It's just connected in parallel so that it could put out more power and have more capacity each one of these ones.

It's about 750 watt hours a power ride, so just shy. You know, three quarters of a kilowatt hour here and they're good for about 20 amps of load in here. So we are going to put these in this rack and then we're going to build our big old battery using these engineers. All right there it is.

We just loaded up all these batteries. There's 28 of them each one is 750 watt hours. You you multiply 28 times 700 and it's 21 kilowatt hours and this is good for one C continuous and 2C all day. 3C I Think bursts right? So 30, 40, 50 kilowatt? Uh, right.

But we're only putting like a three kilowatt inverter in here, so this will be just fine for that. Now let's let's bolt on the inverter on this side. Right here. There's inverter.

foreign. Next, we're gonna install the Evsc. This one. We're just gonna strap it into that cart.

Okay, next we're going to connect the battery. uh, the inverter to the battery. But if you do that, uh, it'll be a giant spark. So what we're going to do is we're going to charge the capacitors on the inverter And there's many ways of doing that one way.

I Like to do it is just by using this, using a variable power supply and just setting up the voltage the same voltage as the battery, charging these slowly. So starting from zero and then turning it on and then it'll charge it slowly and then you connect the batteries in there. So let's look at what the batteries are at. right now.

the batteries are at 34.7 So we set our variable power supply to 34.. yeah, whatever. 34.6 Whatever. Something like that.

a little bit higher. I Think Yep, Then you turn off the power right and then so now the voltage is going low. Once it's load off, then you connect it and then you put the power on again and there we go. Now this voltage here.

Now that's these are pre-charged They're at 34.8 and so now you should be able to safely connect your battery. So let's disconnect this and then quickly connect that boom, no spark. So there it is. That is our DIY version.

Let's turn it on, see what happens? I'm standing back because this is the first time I turn on that inverter and those inverters are kind of cheap. Okay, so now it's saying we have a red thing here and so I think it's because we have to uh Bond the neutral for this guy to uh to be able to uh work right? So let's let's do that. Okay, the ground bonding in this case I just did it here. connected the uh ground pin the ground pin to the neutral pin.

Okay, here it is time to test it out. Let's see if it'll charge here. We go. This light should be green.

That light should be green is charging Here We go. Our DIY charger is charging. Okay, so this one is putting 14 amps at 120 volts. so it's only charging at two kilowatts.

So this one's charging about one-third the speed as the other one. But that's because this is a way smaller inverter, right? This inverter is only 2500 watts where the other one is 6 000 watts and it's a 240. so double the voltage you can get in there. But we can get 36 volt inverters that are bigger and that output 240 volts.

and so that would be one way to speed this up. Now these batteries can do it. These batteries can put out like I said. it's 21 kilowatts.

They could put like 40 kilowatts right. so you can charge this thing like in half hour. Dump all this energy in here if you had a bigger and those inverters are not that much more expensive. I'll put the price in there.

but here it is. That's what a DIY portable charging station would be like would look like foreign. Okay, now let's talk about the costs of both of these systems. First, the plug-in play cost right, the cart and what you put all the batteries.

there's two hundred dollars. The 48 volt rack mountable rack mountable batteries cost about 1200 each. So four of them, that's six thousand. The 48 volt inverters about thirteen hundred dollars.

The 48 volt uh or 48 amp Evsc, right? That's the charging uh device for your car. It's 800 bucks that comes to a gram total of 8 299. You also have to put in maybe another couple hundred bucks of like cable and uh, well, that's about it. Nothing else.

Some zip ties that I use, uh, some ring terminals. That's about it. This is an entire Plug and Play System 20 kilowatt hours for 8 000. about 8 500.

Once you add up all the other little things right, that's not bad. Next let's look at the a DIY battery cost, right? This is a 21 kilowatt hour. so there's more battery in this system, but all the other things are a bit smaller. So the same thing.

200 for the cart, Then the 36 volt EB4 batteries. You'll need a total of 28 or you don't need them, but I put them in this and this cart right and so those come out to be 3640 for those. The 36 in volt of an inverter is a bit smaller and so it's cheaper. 359 dollars.

You can get those, you can get a bigger one, and then the Evsc. It's not 48 amps here, it's a 32 amp. I Uh, that's a typo there. That one.

You can get any of those for like about 300. So once you add up, this is about 4 500. The same thing. you'll have to add a few, a couple hundred dollars, and more.

And like other things, the uh, all the Xt90s and stuff that I'm using to connect those batteries. those will cost you another couple hundred bucks so you'll have to add those in there. But the grand total? Now it's 4 500. So about 50 percent of the plug-in play, there is quite a bit of savings.

Uh, that can be achieved by doing this DIY version battery us instead of the Plug and Play one. Right now, there is more work to be done on this system, right? And so that's why you'd have to, uh, say you can save some money is because you'd have to do a bit more work and stuff, but you know you can waive your options sometimes if you like doing stuff yourself. If you want to save if you need more battery but you can't afford uh to pay the Plug and Play right then you can get that. Let's say you have eight thousand dollars and you want to build a battery Well, with this DIY version, you can get almost twice as much battery for the same price, right? And so there.

Those are the pros and cons that you that you have to consider when doing this. So I Want to thank you for watching this video. If you're interested in any of these batteries, the links for both the plug and play and for these DIY batteries and all these systems, the inverters and the racks and stuff are going to be in the description this video. Thank you for watching this video.

We'll see you guys on the next one. Bye! That's what a DIY portable charging station look like. Thank you.