All right time for an update on our lithium ion phosphate battery high performance battery. The new inverter is here the 12 volt uh 12 volt 3 000 watt, pure sign so we'll at the very least, be able to uh load this battery with 3000 watts. Right we'll see how the heat signature of this thing is and then from there we decide if we need to like maybe get another one of these and then load it with 6 000 watts. You know i don't know we'll keep going right until we find the the failure here, but definitely i do want to see what the capacity of this these boards are going to be.

So, let's plug this all in and get it going all right. So here's our typical setup: we have the battery uh. We have these connectors using uh, probably two thin wire six gauge wire. Here's our inverter can do 3000, watts, 6000 watts, whatever search and then our load is just gon na be uh.

Well, what is this 2400 watt heater? I think i don't know we'll see how much we can push it uh. Hopefully we can. We can load it with 3000 watts. So the inverter has this uh nice little frequency 60 hertz.

There we go okay. So what we're gon na do is we're gon na turn, one of these guys on and then and then turn the knob and then that's gon na start 1300 watts. This is the first time this inverter is powering up, so it's always a possibility that it blows up, because these are cheap chinese electronics. Basically, so, oh, i should probably oh look at the cells they are.

They are uh. Let me put my clamp to see how much power, how many amps dc so 59 amps right. Okay, let's see here, let's load it up more okay, so, okay! So that's a thousand watts here. Are the cells they're sagging a bit uh 86 amps! Nothing is hot! Yet let me back up turn the second now we just turn the second uh thing so now we're turning the knob there's 1200.

Okay, there we go 1200 watts, 1300 watts, 1400, watts. 15. 16. 17.

18. man. These packs are sagging more than i thought it would be capable. So there we go 198 amps and see another down to 3.1.

So that's 200 amps, okay. So this is the peak of this system here of the this. Is this fully on? So it's! I guess. It's only a 2000 watt heater, so that's 200 watts.

Let's leave that there for a while and then put the thermal camera and see that all right. So here we go. That's the battery there um those crimps are kind of hot. I think those i soldered, those too you can see yeah that it's it's creating some heat in there right, where those are where those uh terminals are at.

Let me see what the wire well i mean it says right there 45 degrees. The wire is what's really getting pocket right. Oh yeah, the wire is a bit hot. 200 amps.

Remember we're doing 200 amps the the cells are staying at 3.1 volts. So far the inverter, the fans haven't even come on, so i might have to put another one of these cables yeah this cable's getting hot. Look at that. Oh, let's look at the hey the connector's, not the connector is holding out pretty well.

Actually, it's just it's just the actual cables, the six six gauge cable, so i'm gon na go get another cable. We're gon na charge this battery again because see see what we're getting here. These cells are starting to see some heat, but these are not because well, there's, probably some resistance in there see how this block of four cells the center one seems to be pretty even but it's the same thing over here. You see that battery there.

So these four cells yeah. So if i get another set of cables, then those cables will not be the source of such so much yeah, 50 c's yeah. Let's cut this back and uh. Let me go get more of another set of those cables and then because the inverter has another input, so you know we'll we'll run this more properly wire so that we can really see what the heat is going to be.

But there you go that ran 200 amps right for a couple of minutes and there is the heat signature on that bus bar there. But if we load it up more evenly, then let's see how that's gon na spread. Maybe these two at the end is gon na look just as cool as the uh, the ones on the in the center there. Let's do that all right now i have uh connected a second pair of wires right.

So now there's going to be a much even flow or the load is going to be evenly distributed through all these cells um. I recharge the battery because well we took some a lot of energy off last time. So now it's not perfectly balanced. I'm kind of balancing this thing.

I just found this uh i'm going to leave it here, so it's perfectly balanced. Let's next time i do the test. I have my clamp over there and it's going through both of the wires so that it can record all the stuff. Let's turn on our inverter okay, 2.

000 watts: hey look at that! There's uh less 170. How is it 10 amp uh, 10 amps less because it now because it's flowing better well, that's very interesting! Okay, so there's some sag saggage going on here, 3.1 right 3.1, all right! So i connected the other heater here and now, interestingly enough, it's only 2200 watts. That's interesting but uh now we're closer to the 300, so it's uh, 291 amps, so okay, so there is the image so that cable is not crimped very well. I think huh what's going on here, but look at that.

You see that you actually see a line in the middle of that plate. That is very interesting. Uh, 289 amps right now, continuous, we're just gon na keep this going until the battery uh dies right. So it's gon na be continuous, oh, no! No! No! The of um, the inverter, the inverter's, the one that's gon na die, there's smoke coming out of it.

Oh my god, okay pieces of junk, of course, 3 000 watt inverter, is gon na die at 2200 watts. Yes, oh my god. Well, as it turns out, the cheap inverters are cheap inverters and you can't run 2200 watts on a 3000 watt, inverter um i will uh get. Maybe i won't i don't know.

Maybe i won't get that same one, but maybe another different brand or something get two of them and run them at half the rated capacity and maybe they'll survive so that we can load this with 300 amps or 350. I wanted really to do 350 amps just to see um see the the thermal thing i might have to get rid of these holes here, because there was a very distinct line that was starting to form here, and this is of course this is never got hot. Like this is like just slightly above the ambient temperature right, but it was only a few minutes that was the problem. Okay, this test is to be continue.

We'll see you in the next iteration of this test, it turns out it's uh, challenging trying to get load up a battery with this much amperage. All right see you guys the next one bye all right, so this inverter is kind of crappy. At least this version of it, but i think there's something wrong with it, because i loaded it up with 2200 watts. This is rated at 3000 watts with surge power, 6 000 watts.

But i think the problem was is that the fan doesn't work and so there's no airflow, and i loaded it with like at least a couple minutes, i think of something of 2200 and then smoke started coming out of it. So i think, there's something wrong with this one, i'm gon na return it. I will get another one and then see if it does the same thing. You.


7 thoughts on “This battery kills inverters”
  1. Avataaar/Circle Created with python_avatars Bryan Joseph says:

    A cheap way to test it is to put a big piece of metal in some water and dead short the battery with the metal while an amp clamp is connected.

  2. Avataaar/Circle Created with python_avatars puttesla intxtbks says:

    When you get over something like 15 amps, should have bare copper on crimps(sp?) Thanks for vid, burn up inverters so we don't have to!

  3. Avataaar/Circle Created with python_avatars Rowen A. Boatman says:

    HAH scary. I live totally off grid with just a few panels and a 24volt inverter running everything off a couple of 105AH lead acid batteries. I've been watching your channel to try and learn more and maybe switch to lithium one day, but I guess I'm better off with lead acid and NOT blowing up my precious inverter, lol.

  4. Avataaar/Circle Created with python_avatars rahim rahim says:

    You have been making videos about electric vehicles for eight years Very inspiring videos ๐Ÿ™๐Ÿฟ๐Ÿ™๐Ÿฟ๐Ÿ™๐Ÿฟ

  5. Avataaar/Circle Created with python_avatars Socialhack says:

    Trust me; there is life beyond batteries

  6. Avataaar/Circle Created with python_avatars Thengine says:

    Hey, I want to make a 8s1p pack. Can you recommend a way for me to balance charge the pack?

  7. Avataaar/Circle Created with python_avatars LewiCheung says:

    Nice! First!

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