FINALLY! Affordable 12v LiFePO4 Battery without long China shipping times

hey let's talk about batteries look these are all the batteries that we got in currently we got a huge huge truck of all kinds of different batteries basically all the scooter batteries and even some of these lithium-ion phosphate batteries right so it's never been a better time to get into lithium batteries or build projects with combat because there are abundant there's every day there are more and more kinds coming to us in better and better shapes a lot of these are brand new unused uh for some reason they didn't make it to their destination they didn't make it to the end product right or their application and so they end up in our hands and then what i'm doing is finding ways to use them uh but here's the thing i'm not the only one that's doing this that is selling batteries right on the internet but most people what they do is they'll sell you the batteries so that you can harvest them you know they'll sell you batteries sort of like this that it's like dead you don't know how to use it it's up to you to figure everything out and most of the times what ends up happening is that a lot of you guys have to take them apart right sort of like this one you take it all apart you rip out all the you know all this stuff so so you can get to the individual cells and that's great it's been great for a long time this is a way to get really really affordable cells right uh but in my opinion that is not the best way to use these batteries because you're undoing a lot of this work these are already packs that are put together and you're gonna take them apart and then you're just gonna you know put them right back together into another pack right you're just undoing work that you're about to just redo and so a better way to use these is to find an application where you already uh just use them right and so some of these are ready to use as is you don't need to do much other than just charge them uh some of them require you to maybe like change uh a connector because for different reasons because we can't find it so like this connector right here is very very rare so it takes a long time to get it from china we're currently waiting for a bunch of those connectors some of these require an extra piece of hardware to be able to activate them so they can you can use them sort of like this ones right here and maybe these ones i still haven't figured those completely out but some of these are kind of ready to go all you have to do is just change like a connector or something this is the battery pack that i want to talk to you about today a lot of you guys for a long time have been asking us for 12 volt batteries and for the longest time we haven't been able to give you anything the lithium batteries usually don't make a good 12 volts right automotive 12 volts and a lot of you guys that are into rving or for some reason want a 12 volt because the 12 volt equipment it's it's much cheaper because it's way more abundant in the marketplace then uh you guys haven't been able to use the the readily available and affordable cells that we have been using at 24 at 36 and 48 volts levels right but here for the first time now we have a pack that is perfect this is a 4s lithium-ion phosphate right so lithium monophosphate there's a lot of advantages to that because it's safer right so this is not as reactive this will not uh catch fire as easily as the lithium carbon oxide versions of of cells right and the other thing is that these are long-lasting usually lithium-ion phosphate will last typically between 4 000 and 6 000 cycles or the other ones are somewhere around 500 to a thousand right so these have three to four m longer cycle life than the other chemistry so these are really cool so this is what they look like right they come with this little wimpy connector which is uh not ideal but they work all you have to do is charge it and then these work right for some reason they all have this cut so there's uh the shrink wrapping is cut like that but you could re-wrap it you can put a piece of tape that's an easy fix um i took one apart to see what is inside and what turns out to be that these are it's a pack that is made out of five smaller packs that are individually wrapped sort of like this right here we go and they have three bms's per pack so four cells in series and then three of these it goes into a bms and then there's three of these into each one of these little bundles right and then there are five of these that make up that all that exits be at these tiny little wires that's the only thing here that is not ideal because that means that these little wires well they are skinny and so that means that the power output is not going to be very high and at lower voltages or like 12 volts you want the power outputs to be higher right so here's uh the connector the original connector right so this connectors uh it's actually this connector is rated at 20 amps but you're really pushing it at 20 amps those little pins will get hot and stuff and then definitely these little cables here will not do 20 amps and so we'll have to change that so that's what i've done onto these ones here just to see how far we can push it right this is the limiting factor here is the connector then the next limiting factor is going to be these cables right the they seem skinny but there's five of them so we'll see maybe i'm estimating that they will be able to do about 30 amp continues right so of course that is if the bms's are capable of putting out uh 30 amps all combined right i don't know the mosfets on the bms's say they're good for eight amps i think i read somewhere online but i think because due to the cables maybe we're thinking that it's gonna be lower so anyways we have to do a test uh and see uh the power output another one thing before we do that is that you can see that there are data cables these are two little cables that are in here and so taking it apart i'll show you what's in there okay so once i took apart this pack right here one of them had an this extra pcb on it just on the side here with a piece of tape and that's what these other four cables go into the connector once you start looking into that uh ic of the chip right there it says it's an eeprom chip which as far as i understand eeprom is uh well that's just data storage right so i think what this is first of all first i thought it was maybe a temperature sensor but i don't think that's what it is i think this is a way for whatever this device that this battery was designed for would store data about the battery probably cycle life probably calendar life uh maybe there's a temperature sensor and they would keep that in there i think that's what this chip is it's probably just like an id chip that will keep track of the life of this battery right and so the only weird thing is that it's not really connected to the batteries it's only connected to the battery via the the device that this was uh designed to power and which by the way we don't know i don't know what uh this was designed to power something low power obviously right because of the tiny little connectors and there are several of these batteries uh they're in similar configuration this sort of cylindrical you know shape about this size lithium iron phosphate most of them and the there's a couple several like voltages these are the 12 volt 4s but there's also a 5s which is 16 volts nominal which is kind of a weird thing but we will finally use i will try to find an application for those so now let's load test this pack right here i'm choosing this one that i've taken apart so that we can have a view of the all the cables a lot of the bms boards on stuff if it starts getting too hot before they shut down then we'll be able to see that through the thermal camera and be able to touch it and have a good way to notice that right so i also have a clamp right here and that's what's going to keep track of the amperage let's run the test there we go let's increase oh what all right exit i accidentally triggered the bms's off because the inner rush was too much right okay i couldn't control it uh as finally as i need to so what i'm doing here is i added a second pack and that way uh they'll be able to handle more of the inrush and but we'll still be able to uh document right and monitor what this single pack right here is going to be doing and so let's start it now so there we go 10 amps 15 amps 20 amps let's leave it there for a tiny bit and then we'll check it with the thermal camera all right it's been a few minutes we're running at around 20 amps per pack this one right here which is the closest one to the exit uh is seeing about one amp more than this one over here right so let's look at the cables here this is at 20 amps each so 30c that's this room temperature that's they're they're warm they're starting to get warm but like there's nothing i mean not really not much right what's my hand yeah my hand's at 30 c right so it's room temperature these are 32 so maybe one two degrees above ambient um maybe this big cable right there that's seeing 40 amps or 42 amps something like that okay this is all safe let's see how much further we can push these batteries all right now we're gonna increase the power until these completely shut off we're gonna do this quick so that the cables don't have time to heat up and melt and stuff but if everything is this is a well-designed pack then the bms is going to give out before uh the levels get high enough or to start melting the cables right that's what you would want to do uh when you're designing and building a password like this you want the safety measures so that their battery cannot melt itself off right so let's see if they did a good job and start pushing this 23 oh oh that's it so basically around 23 amps what we were right there so after 23 amps this gives up the bms is basically shut off uh 23 amps is not going to melt these cables so yeah this these are well designed packs that means that you can get a maximum of 20 amps per one of these packs that's actually very good news all right so now this setup here i have four of these batteries and at 20 amps times 12 volts right that's about 250 watts or something that and these are 288 watt hours so these are essentially 1c or they're they are bms right at 1c capable so that means that this right here setup could do about 80 amps or just nearing about one kilowatt we're gonna push this set up again and just to show you uh that the cool thing about having individually bms packs like this is that you can grow your system right by just adding more but if you go over that if you make a mistake and all of a sudden you're asking too much of your batteries then you don't have to worry about it too much because then the bms is going to save you it's going it's gonna just gonna shut off and protect your your batteries and your cabling and all your equipment right so here we go we're gonna add there we go ten so there we go there's about 21 on that one let's see if this is well distributed ah it's not see this is 19. this is 20 19. okay so two of these packs are pushing about one amp more because of where the power is being taken off of this uh this uh power strip right so the overall into the inverter is 80. so we're exactly around 80. this is the max that these will do right so that means that we'll be able to push it just a tiny bit more and then uh these batteries should turn off safely so here we go we're gonna do it oh it went all the way to 90. look at that how did it get to 90 let's look at the individual packs oh look at that this one is doing 24. well that is different than the last time this one's 21. is this one 24 23 21 oh that is weird why isn't i why are these shutting down well this is a good test yeah these wires are just starting to to warm up a tiny bit um well let's push it let's see how far we can push it before it shuts down we're at 90 oh that's the max that this system do i'm all the way up with this heater okay let's leave it there for a little while and then check the temperatures because now this is higher than uh we had tested before okay so it only lasted a few minutes probably like maybe a minute and a half and then after that it shut itself off so again everything these didn't get as warm as these ones because these were seen 92 so if you do the math 12 times 92 that's 1.1 which is exactly what is what this is 1.1 kilowatt hours right at 1100 watts that it could put up so that's exactly one c so i guess maybe these are capable of just a bit under one seek on a continuous right um i bet you if you these will do 20 amps for long time like i've tested like 20 minutes like i tested before but at 23 these will only be good for a few minutes so there you go the results are in unmodified just the way they are with this little connector this is a good 10 amp continuous uh output battery right all you'd have to do is just build something like this that have these little connectors and then connect a bunch of these and then you can build a big battery system right that is 12 volts and each one designed to only give about 10 amps each right of course you can better that by just changing the connectors like what we did here and that our testing resulted in 20 amp continuous and burst of like 24 amps for a few minutes before the the bms will shut off but either way uh you can use these these are safe because the bms will shut off before these little wires start melting these cables start getting warm around 20 amps and they start getting hot somewhere around 30 amps right but of course the bms will shut off before that so you don't have to worry about uh wiring these wrong and then have these you know melt and stuff and burn anything right so with the use of a little dc power strip like the ones that we sell at jack 35 like this then you could make a large battery systems using these you could also put them in series if you wanted to to do more than 12 volts right but obviously there are other batteries that we have here that will you will be able to do that we have our tennis scooter battery packs that will do up to 25 amps and those are already at 36 volts right 42 fully charged 36 uh nominal voltage so maybe those will be better for your application but you definitely could you know wire these in series so you can hire the voltage up to 24 36 or 48 but obviously these are ideal for running a 24 or a 12 volt uh system right uh these are 1c so these are 288 watt hours right uh here we go 288 watt hours and you can get about 250 watts uh continue so this would be a 1c rated pack right with internal bms so keep in mind when you're designing your system that way right if you need it if you wanted to build let's say a 10 kilowatt hour powerwall or battery system well you know you just divide 10 000 by 288 and that gives you somewhere around 35 of these modules uh and so you'll be able to do that and you could get up to 10 kilowatts for your 10 kilowatt hour battery uh pack right as long as you do you do this and change the the the uh the cable right the connector if you leave the original connector well you can get probably half of that like five kilowatts for every you know so about half you know half a c output and stuff so just keep that in mind these are available at jack 35 i will be making a build right a very detailed build where i show you how to build like a thing like a portable power source that you can use maybe as backup or something i don't know exactly what i'm going to build but hopefully i can get to that quick i already ordered some pcb boards because i'm thinking of some designs and so stay tuned for that there's also i'm going to be talking about the other types of batteries as i find the applications for those right so thank you for watching this video see you guys on the next one bye [Music] you

Channel: jehugarcia

Views: 71,513

Keywords: lumix, e-bike, ebike, electric skateboard, boosted, board, elon musk, gigafactory, tesla model 3, model, 2170, car, mods, diy car, diy, renewable energy, renewable, li-ion, lithium, ion, battery, tesla, swap, tesla battery, powerwall, volkswagen, carros, samba, van, solar, 18650, dead battery, TESLA, motors, ev, electric

Id: qbculnL1EIs

Length: 20min 55sec (1255 seconds)

Published: Tue Apr 27 2021