Good afternoon, all it's postbug right, let's start with not this one, let's start with this one which i've already opened, and you can probably tell that this is a bms, and this um bms looks very much like the dali or daley, as i call it because i Know a couple of people called daley, but there it is uh dali. No, this one is an m god, but i think it's by essentially the same manufacturer. So you get the bms. This one is a 20 amp charge.

Current 40 amp discharge current and you also get the nine way connector cable, because this is for an eight cell lifo. Four lithium ion phosphate um yeah. Here we are so i'm doing a translate using the translate app eight series: 24 volt battery protection, uh discharge, current 40 amps charge, current 20 amps lithium ion phosphate. Wiring method is the same.

I can't read this very well um and it keeps coming and going, but anyway, i think we get the gist. It's definitely lithium ion phosphate. So, let's take this out to the shed and compare it with the dali bms that i've got currently connected to my bicycle battery. Well, there's a fair old size difference between these two.

This one is a 20 amp discharge, 10 amp charge and the new one. The m, god is a 40 amp discharge, 20 amp charge so how's this system been well, it's been fine and it works periodically, but there's been very little sun recently we're very close to the winter apocalypse, no, not that the winter solstice, but it amounts to the Same thing um, so it does fire up every few days and do a one hour discharge and because there's very little sunlight it pretty much only runs for an hour. There's the ant miner there, and so it generates about a penny winter's, not much fun for solar crypto mining uh. Quite apart from the fact that it's very cold out here, two degrees celsius um, but the battery is charging it's getting.

180 milliamps. Let's have a look at the sky yeah, i mean it's like this pretty much every day, just nothing, nothing! What well lots in terms of uh, moisture in the air, but uh can't see the sun started a curtain. So this item on e of the bay um is this: now they show it as a purple one which would have been quite nice to differentiate it from the smaller one. But i got a red one, so i chose the 40 amp discharge 20 amp charge and i bought this one from china because it was half the price the uk seller wanted 40 quid for this one.

So 19 pounds 94 free shipping and this one came from easy shop. Eight i'll put a link in the description below so that's the new bms. Now that's going to be wired up output connectors on here such that i'm going to use it with the new battery uh, the 32650 array of cells - and there are 32 of them. So i'll do the wiring of that in due course on to the next and so next up we have this and it is a little module and this has been very kindly supplied by icstation.com.

So let's take a look at this: it is another unit. Oh, it's stuck in the bag yeah. This is another unit with a little display, it's totally stuck in this bag. I can't get it out because these pins are stuck through the plastic um, with a big 30 amp relay and a little display under microcontroller.

It's another one of these voltage controlled switching devices. Now this one is a charge controller and it's only a charge controller. Now i've got uh. Currently, my solar panel connected directly across the lithium-ion phosphate battery because there's quite a good voltage match between them, but i do anticipate an issue come the longer days and the brighter more sunny days where the battery is being charged quite aggressively.

The ant miner comes on by virtue of the discharge controller, the one with the lcd display um, but it doesn't actually wind itself up in time and turn on its mining and hashing boards before the high current from the solar panel takes the voltage of the battery. So high that the bms disconnects - and i don't really want the bms to disconnect - i don't really want the bms to do anything. So what i want is a situation where the discharge controller triggers at say. Well, it's currently set to 29 volts and this could be set to say 29 and a half volts, and when this gets to 29 and a half volts, it actually disconnects the solar panel from the battery.

Only briefly because, as soon as the ant miner starts pulling a significant current, the battery voltage is going to fall back and this will have a fairly small hysteresis reattach the solar panel. Because of course, when the ant miner is mining, you want the solar panel to be contributing towards the current going to the miner, because otherwise it would be wasted. So i do feel that i may need a charge controller, and this is a very simple, primitive charge. Controller, it doesn't do a pwm or mppt or anything fancy like that.

It will just simply disconnect the solar panel. If the voltage of the battery looks like it's going to get anywhere near the cutoff of the bms, because i don't want the bms to cut off so that's what i want this for uh. Let's take a look at this item on icstation.com website. Ah, here it is on icstation.com and we've got a discounted price, uh eight dollars 35 cents and that's for a remaining one day, two hours and 11 minutes so uh there you go so this is the xhm 604 charge control module dc 6 to 60 volts.

Is your allowed battery voltage does actually say here max 80 volts battery protection board controller for lithium or lead acid battery, so i'm going to use it for lithium ion phosphate and i'm going to use it to disconnect a solar panel, which is my charging apparatus to Disconnect that, just briefly, if we get anywhere close to tripping the bms and we'll have to first test the bms to see what voltage that disconnects at so here's some stuff on it, um 6 to 60 volts display precision, point 1, volt control, precision, 0.1, volt tolerances Size and all that stuff and again on this thing, you'll set up an upper voltage and a lower voltage and on this one. If you go above the upper voltage, it will cut out, the relay will disconnect and then, when you fall back down below the lower voltage, the relay will cut back in and it only has that one mode, so it doesn't have a discharge mode. So this is typically used to charge a battery using typically a mains battery charger, the dc output of which can go into the input connections and the battery sits on the battery connections. All the information you need um to connect this thing up and there's even a video here by 12 volt vids.

So big thanks to icstation.com for sending me this um, i'm hoping actually that um, unlike some of my other modules, where the inductor burned out this one, because it's got quite a big chunky, inductor, there's not much chance of that happening, so this should be a good Addition to the shed solar power system, uh future video. Of course i will test this on the bench hook it up to the solar, crypto accumulation, machine set it up, set the upper and lower voltage thresholds and do all that good stuff. But that will be in a future video, okay, moving on so next up these two things: let's unwrap this one um nice thick polythene bag on this one. Actually, it's not a bag, it's just some polythene.

So this is a solid state relay ssr 40 and the dd double d um that actually means dc on the control side and dc on the output side. So this is a oh 3 to 32 volts. What is in effect, the coil, because it isn't it's electronic but anywhere from three to 32 volts on the input and this will switch on and you can put um up to well, five to 60 volts on the output. Now i don't know is this: oh, it does have a minus and a plus on there, but could it switch bi-directionally, i'm not sure.

Of course the ac ones do and they're marked d a so it's uh dc on the coil side. It's not a coil, obviously and ac on the output side, but this is a dd. This is dc switching on the output side and, of course, the advantage of this over a relay is that you don't get um well, there are a couple of advantages. You don't get the flyback the back emf when you disconnect your control voltage.

Also, of course, it has a much lower holding current, because it's not holding anything. It's just powering the electronics um. The only downside of this is that this is a 40 amp and i believe it's only rated at 40 amps, if you put it on a heatsink and you can buy these kind of heat sinks which sit underneath with all fins going across i'll, probably have to Do that before i can put the full 40 amps through this. I think it also says in some of the ebay listings can be used up to 100 amps with forced air cooling.

I think that would have to be quite a lot of forced air cooling, but allegedly you can use this just on the heatsink, with passive cooling up to 40 amps. Let's take a look at the ebay listing. Okay, so here is the single phase, solid state relay dc to dc, which means dc control voltage and you can put dc on the output. It even says that on the sticker, a lot of these are dc to ac ssr, 40 dd 40 amp dc 3 to 32 volts on the input dc 5 to 60 volts on the output.

Now i bought this from china. It was five pounds: 99. 83 pence shipping and this one came from 365 best seller right scrolling down. We can see some of the da ssrs, so this one is a dc control voltage but ac on the output and typically they're rated for mains.

This one is 24 volt to 380 volts ac um, but the dc ones tend to be five to sixty volts dc, lower voltage, of course, uh. I can't think of the reason for that. It's electronic there's more current involved, maybe no because that's also 40 amp whatever, but further down. You can see the heat sinks that are available for these things.

So here's a sort of um heatsink which sits underneath the solid state relay this one sits underneath it, but also to the side. It's a bigger affair um. So i'm gon na have to buy some of these heat sinks. Try them out see how well they work.

Uh, what other information do we have on this ssr? None and in the same vein as the 40 amp solid state relay? I also bought this. I mean it's entirely different, but it kind is designed to do the same job. This is a mechanical relay um. This is 500 amps, so a good deal more than the solid state relay.

So if i'm wanting to control very large currents, i'll probably have to go to a conventional uh coil based magnetic. I think this has a plunger. It's almost a solenoid, really um relay 500 amps on the contacts they're pretty big. I've got a feeling there m8 easier to take this out of the bag, actually, wouldn't it.

So let's do that. So these are eight millimeter ring terminals which i used on the big batteries outside. Yes, they fit, so these are m8 threaded terminal posts and there is probably a heavily sprung plunger in there. These are the terminal posts for the 24 volts, which is the coil.

Of course, i chose the 24 volt relay because i'm using a 24 volt, 8 cell lithium ion phosphate battery on my system. So might try that probably end up using this simply because of its higher current rating, but probably what i'll do i mean? I know it's not this, it's actually the other unit, which is the discharge controller, but it's got the same. 30 amp sungl relay on it, so this relay will probably energize this relay and then this will do the main current switching between those two posts. So this item on ebay, i got from a uk seller located in manchester united kingdom.

It's a four pin. Well, it's a two pin on the contactor side. I mean: is this a relay or is it a contactor and is there actually any difference between those two things? Uh 500 amp dc 24 volt is the coil voltage. It was 18 pounds 70, so more expensive than the solid state relay, but a lot more current uh free shipping.

This came from pond way in the uk and finally, a little bonus item. Well, it's actually quite a big bonus item. It's so big. It won't actually fit on my desk there's an envelope there and then under this foam top there are these little beauties for prismatic lithium ion phosphate cells.

Can i get them out from underneath the camera? Yes just about, and those are these they're litter, carla 3.2 volt. 105 amp hour: that's the date. Um they're, not bulging, they're, absolutely flat, so they look pretty good i'll put one on the desk actually and we'll have a proper look at it. So, yes, this is it um.

3.2 lithium ion phosphate 105 amp hours. Now it's so. You multiply the 3 volts by the amps and you get about 300. Let's call it 330 watt hours.

So, of course, four of these will be 1.3 kilowatt hours. Won't it yes um! So in this package we've got the metal work, it's basically strips and nuts to strap these four together. Now these have taken about two months to get to me because they can't be shipped air mail. So the seller, an ebay seller, put them on a boat and they were shipped to me by boat and then turned up by a dpd.

I think it was, and the seller was very good, very attentive, very communicative. I was taking a bit of a risk because you know buying big expensive things on ebay is always slightly risky, but i'm actually quite impressed with the seller. Now i'm not going to go to ebay, because i've ordered four more of these and i'm going to wait until they arrive that's going to be sometime in february until i can be absolutely certain that the cellar is completely kosher, completely reliable as it were. So this is just a sneak peek at what's going to become an 8 cell lithium ion phosphate prismatic battery pack um.

Yes, i was showing the whether these things were bulging well, they're, absolutely not bulging. I mean they look brand new they're, all qr coded and the date is very recent litter carla is a known brand, they're very cold because they've actually been out and shed, and it's about two degrees uh. Well, we saw that didn't we out there, but yes, i i do think these are going to be um really good for what i'm trying to do, but i do want to get the other four before i can be absolutely certain that um these were a good Buy and of course i haven't tested, these um check their capacity that sort of thing yet either. Now, if you do want to know who the seller is, ask me in the comments, because i will give a link to the seller, but i don't want to promote that seller just yet.

As i say, the seller appears very good it from the listing. It looks like the sellers based in india and just negotiating the transfer of these things from china to the united kingdom, but he was very good, very attentive, very communicative um. So if you want to know who the seller is quite happy to answer that as a question in the comments, but yes, this is my little bonus, four of these beauties and four more on the way, and so these are today's post bag items with this, representing The big prismatic cells there, so some thank yous, thank you to my sponsor jlc pcb and i'm making some more printed circuit boards for my solar crypto system soon. Also a big thanks to my patreons.

I don't really thank my patrons enough, but um they're, hugely supportive of my channel, extremely generous people been with me for years. So thank you patrons um and i also want to say um. Oh, it's today, it's actually today, 21st of december, a very merry winter solstice to you from this point in, of course, the days get longer and solar works better. Also, merry christmas happy new year, cheerio.