All right folks, time for another battery video. This time around we are going to be talking about bus bars. We are going to be real world testing these different types, right? This is a multi-layer copper bar that you can buy on AliExpress for anywhere between three dollars and seven dollars. Uh, very popular.

We're gonna compare that against this one right here. This is uh, 33 millimeters across. It's a one ounce copper, two layers, one on each side of this board PCB board and then this one right here. It's also 33 millimeters across and it's got one ounce uh, copper layer on this side, but on this side it's aluminum and so now you have this thick I don't know whatever went in 16th of an inch? I don't know.

like one 1.6 millimeter thick um, aluminum plus part that we're made and so the way we're gonna test that, we're gonna load it up in the same battery and here is the copper bar. and then here's the aluminum bars. and then here are the Uh PCB bars. over here we're gonna put the thermal camera and we're gonna load it up with like I don't know 100 amps I'm gonna start with 100 amps and see how hot each one gets and then we'll go from there and then we'll increase the power until one of them gets too hot and then we'll We'll just release the results.

This is just a quick, fun experiment. Uh, you know I I'm interested to see how these will do I figure I'd share it because others out there might be interested in the same information just as me, right? So let's start a test. Okay, here we go: 100 amps. All right.

So after five minutes of a hundred amps, the PCB bus bar is at 88 degrees see aluminum bus bars. Oh, wait a minute. Why is that one at 81 and this one's at 88? Oh, that's there's something weird there. And the copper bus parts are the 88.

and of course the cable over there. it's at Uh 87 so let's see if we can tighten that and then we can get it to match this 81. right at the five minute. Mark Now with 150 amps, the Uh, here we go.

This is the PCB bus bars or 109 degrees the aluminum one. This one's a 105. this one, it's a 94. and this one over here, it's a hundred and nine degrees.

Thank you. Okay, so 10 minutes at 172 amps. The PCB bus bars are 128 degrees, the aluminum ones one is at 120 and the other ones that are 100 and three and then the copper one 126. Degrees 120.

So Amanda one that's winning is that aluminum one there I Wonder why that one? 10 degrees difference there? All right. I Just replaced this bus bar with a fresh one. so we've been at it for five minutes 174 amps. Let's look at the thermal camera: five minutes 137 on the PCB bus bar and 101 on this aluminum one and 116 on this one.

And the copper one is 132. 139. So it's still the winners. This aluminum bus bars, right? This one's the lowest 103, but even this one has been here the longest 115 116th.

Then the second best is this one, the copper at 134 135 and then last will come the PCB one at 140.. All right I Just want to make a quick video to show you guys how the PCB bus bars compared to the commonly available bus bars that are out there right? And the clear winner on this it's a surprise is the aluminum ones which are also it's kind of a PCB it's just aluminum substrate. uh PCB right? And so from here on I guess we're gonna switch over to aluminum ones. Uh, on the Uh projects that I'm doing.

And so as you can see it, it's even better than the uh, you know, the commonly available copper ones. Now the regular PCB ones, one ounce copper, uh, one. using two layers of those, they're just slightly less than those right. At 170 amps for like 20 minutes, they got to about 140 degrees Fahrenheit right? So yeah, they're terrible.

They're definitely not terrible. You can, you can push quite a bit of power through them safely. Uh, right. But if you want the best ones, well yeah, I guess these aluminum ones are going to be better than even the uh, the All Copper you know, multi layer copper ones that you can buy on AliExpress and stuff like that.

All right. Thank you for watching this video. We'll see you guys on the next one. Bye Foreign.