1kw DIY PowerWall affordable 18650 build project (2018)

Who is that? So you want to

build

a DIY power wall. I'll show you how to make one using these as batteries and these as your inverter. You can

build

a small DIY energy wall. Come on. I have an idea of ​​what it is, oh yeah. remember these guys so today's

project

is going to be pretty simple it's going to use 10 of these battery modules in series to generate 36 volts and connect them to this 36 volt UPS we're going to take this out of this box and house it in the same boxes this it's just an attempt to be creative and be able to put this on the wall more easily because it's a little thick and it doesn't hang on the wall very easily so the first thing you're going to have to do is stand next to this box here and then screw it to Wall.

I don't think I need to show you how to screw a box to the wall so let's pretend you guys redid it now next see if 10 of those modules fit in here that could be tricky sometimes let's see how we do it right so 5 on a roll here i will work so now i just have to wire up ok there are multiple ways to interwire all the modules there are the original ones that go in the middle here i didn't get some i even got none of those for power I won't show you so it's cheapest to use solid wire solid wire of course you'll have to take into account what kind of load you're going to be putting on these in my particular application.

I'm not going to load them. too much so even this skinny wire will suffice that's the cheap way to do it all you do is make a bunch of these and then you install them there second least expensive is correct the reason this is a little expensive is because these are expensive it's probably a dollar and a half each like 20 bucks here it's pretty ok and then the cable itself this is the cheapest is like this is 8 this is 6 I like to use this because this is silicone this is solder wire this is RC you know high temp silicone this is probably again I'm going to end up using it because I love working with it because it's flexible and that's why I like them so I'm going to do mine like this but i want to show you there are different ways to get it right now that we have all our modules wired up it's time to install these guys these are long lines these are the sensors for the BMS and they need to go they have a temperature sensor on this board so what It really helps if you can install them here right next to the right on top of the batteries so if this module here gets hot the sensor picks it up and sends it to the main unit and says hey unplug reduce the rate at which you are transferring energy in or out. a lot of things that you can program to be able to do or happen in the case of hot modules or the temperature that goes up a certain amount, so we're going to install them here.

I'm going to use that single-sided tape with tape. those out there hopefully this quoted the double sided tape w i transfer the heat to the sensor let's do this right now before we go too far here i want to check this unit works before i take it apart and you know do all that extra work for nothing right ok so that resulted in a 75 watt light, press that and hopefully it should go quiet. I'm powering that using a single hoverboard battery there we go and we've got light so this works now let's take it apart ok that box so this is an inverter now let's put it in a new home in a new box let's put it here so the idea here is simple is just put the battery the UPS and the charge controller in the same box that way it's all by itself itself -contained in a box and the only thing going in and out of our connections from the solar panels and out of AC where you can use it to power any appliance you want that is within the 900 watts this UPS can provide let's take a tour- through all the components in this at the top here is the charge controller so the power goes into here it goes into this it goes into this solar charge controller here's a screen for that I used to have two of them here, but I took one out if we don't need it. and then from there the power goes and goes into the buried battery through this this is a bypass for this meter right here and that meter exactly will tell us what's going in and out of the battery right now it's discharging 11 watts it's coming out so it's going through the negative on the positive side this is the 40 watt fuse I put in there and when it glows this little light should come on then it connects to the battery on this side so on this side there's a battery on this side there's the spade charge controller and that connector is for this which is the UPS there's a fan here's the transformer you may have to modify it a bit as well to be able to make it fit here so tight fit this is the biggest part of the UPS so the power output goes to here and out of this and then into here this could be a conduit so you can put it in your wiring or a you know , as a strip or in this case what i did was put a little electrical box and then it just plugs in there so the only problem with this transformer base inverters is they make noise you can hear that hum that transformer is running in there and turning on the on the bottom here so there's the battery there's a ten modules right each one is 40 amp hours 3.7 volts so it's fully charged 42 volts so this one's not fully charged right now it's 39 fully discharged it's 30 volts and this thing stopped going around 30 volts I just tested that on this unit here and then it went out around 30 volts so that's fine right now what I'm doing is charging with the built in charger here and it went from 30 volts at 36 volts but it stays there so maybe it won't go up to 42 volts we'll take a good look at the battery here we have it all these ten modules in series are the most negative and then they intersect with this, that, this, that, then intersects and then intersects, so that's ten modules, these are the long months for the BMS system.

I will do that. check out the setup for this in the next video so now this is our diy power wall so how much is this power wall Let's run through the pricing of all the components first we have the sword charge controller available for 38 99 bi-directional meter at $29.99 announcer above dual power supply available for $30 battery modules are $50 each there are ten of them so it's $500 total the 32 inch metal case is fifty nine twenty two dollars a fuse holder is six eighty two dollars the battery management system the long ones are fourteen dollars each and the main unit is like two hundred dollars so that comes down to a total of $342 all of these components come to a total of one thousand and eight US dollars you can find the links for all those parts in the description of this video thanks for watching.

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