Gadgetory


All Cool Mind-blowing Gadgets You Love in One Place

DIY Lithium Battery - What could go wrong??

2018-10-10
I mean think back to when you were a kid what sounds more fun than like one of those cool ride on Power Wheels things I've noticed the fact that this is not a brand name power wheels this is a cheap Chinese knockoff but that's not the point in today's video the point of today's video is what's more fun than one of these Power Wheels right on things a souped-up one and as it turns out you can make them go double triple or even quadruple as fast simply by over volting them now you could do that by just buying yourself in this case this is a six volt model so a 12 volt battery at the hardware store and plugging it in but this is live as tech tips so instead of that I decided to order myself a DIY lithium battery kit let's see how this goes pulse way pulse way lets you remotely monitor and manage all of your Windows Mac and Linux machines from one app create your free account today at the link in the video description now I hadn't originally planned to do a video about this so you guys are gonna have to forgive me if I am NOT as prepared as even I normally am but I am going away to Disneyland in three days and I need to queue up enough videos for a while I'm gone real talk real talk right now and I was telling ed about this plan that I had to sort of trick out one of our Power Wheels not actually this one and he was like oh we should we should do a video about that and I was like still kind of like learning and I really don't know if this is the most optimal way to do it and he's like oh ya know it sounds like a video so um basically what I've ordered here so these are 18 650 s these are 3,500 milliamp ones I think it's either Samsung or LG Chemical on or whatever they're like chemicals like division is either Samsung or LG cells and then these are high current ones because not on this one but actually on the two seater that I am planning to have all of this end up in you can actually see some pretty impressive peak power draw so I've got a bunch of these then I picked myself up with this puppy so this is the charging / controller board that you need anytime you're building a lithium battery and I can't remember if this is a balanced charger or not so I'm gonna have to look that up so I can determine exactly what type of charger I need to use on it I do have a balance with the embattled charger at home but I forgot to bring that today all right I guess you can see here this is for seven cells in series so parallel determines how much capacity you have and series determines what the voltage is gonna be so this is a six volt model and I'm gonna be hitting it with about 24 volts so we're going to burn it out pretty quickly but realistically I was I was gonna get rid of this one anyway the idea is to make the the jeep Power Wheels that I have at home go tight twice the speed and while making this one go four times the stock speed this is one of the kits from Verizon veeru's it I don't I don't know what they I don't know how they pronounce their thing but basically resists vibration loosening it's safer hey it's safe oh yeah what we're doing today building a lithium battery pack it's a modular lithium battery pack kit just chill what it's all good Tory about it fully customizable where where is the guide don't we have a bunch of like 12-volt batteries just like sitting in 101 yes well a this I'm building a 24 volt battery which yes I know and B I wanted the weight and quick charging and I just wanted to do it this way because it's fun okay to turn this bunch of cells into a battery we need to wire together all the cell's correctly to get our 29 volts and 30 amps at full charge to do this we'll be creating a 7 s 3 P battery meaning there will be seven cells wired in series and then three of those wired and parallel construction of the battery is pretty simple although if we wire up one cell incorrectly or even just drop a nut or touch a screwdriver across the wrong place we risk causing a short circuit that could electrocute us or at worst cause the battery to explode someone's gonna blow themselves up okay I think we should do the things first and then put gels in so then theoretically we can take your whole thing and lipid e blah pity hold on let me help you get that aligned okay we have a rubber mallet here no we're not rubber mallet in these why not because we're not because that's not a good idea well I don't know maybe it's pretty hard to push like we did this three more times and got what seemed like should be ready to wire up battery until we actually thought about it it's really easy before you begin they'll make sure you understand how series and parallel electrical connections work I want to brush up with a subject blah blah blah blah blah don't short a circuit that's bad got it I wanted cereal wouldn't I need to go from here to here though that makes that in order to do that you need to do every row oh this is easy Oh maybe well let's find out oh they have videos oh oh okay we'll be back in a minute here we're gonna watch some YouTube to learn Penza thought if we flip around every second cell creating the connections will be super easy by just placing the bus bars across the top so the good news is we weren't that far off pretty much these bars go on and we make all the parallel connections between our cells oh yeah I can't no thing I'm hold on I'm just trying all my contacts here we good we good we good we good beautiful now we have to attach the yeah I don't know so let's we're gonna watch we're gonna watch this other video BRB alright so we ran at a time yesterday it's day two but there's some good news I was able to bring in the actual car that I intend to use so this one shouldn't fry immediately when we hook this battery up but there's some bad news so I had planned to either hook this up the battery management system for a single input charging or I had planned to hook it up with this doodad and then use a balanced charger like this one but I forgot this is a maximum success balanced charger so this won't work which means we're gonna have to use the BMS except for one small problem we can't find a single power adapter in the building that is so you don't take the three point seven volt nominal voltage you take the four point two volt charge voltage so this thing can't take magically like a twelve volt input and turn it into thirty volts you need an actual like 30 volt charger and 7s as far as I know is a pretty oddball configuration so I'm not sure how we're gonna charge it but I'm gonna start to wire it up anyway I found a thirty three point six volt one do you think it would work thirty three point six yeah I don't know what do you think the tolerances are like on something like this for input probably fine we have twenty nine point four that we were looking for twenty nine point four yeah I knew those stupid hover shoes were gonna come in handy for something we're gonna cannibalize the charger well yeah well yeah cuz I don't have a socket for this so first things first all the balance wires are on go and my negative I believe this is negative charging yep my negative charging wire is soldered now what I need to do is throw on two positive wires to the opposite terminal here so to the positive terminal at the other end of the battery one of those will be for charging one of those will be for discharging now I realize I'm opening myself up to some soldering technique critique here but this is how it's going on Alex do you want to solder me I'm sorry let's go for a solder bath okay that's Lots oh man I can feel the the cringing just wait till the verge does this that'll make me feel better so we've got our eyebrow tweezers and our butter knife okay don't don't include that last bit we don't want to be too mocking of the verge we're not trying to make enemies in the industry I don't have captain tape we really we really need to get like some more electronics project crap so I'm gonna go get packing tape just cuz I need to keep those wires out of the way for all the viewers out there who know what they're doing with this stuff alright make it better or worse that in many cases I know the right way but I'm doing it this way anyway ah now they say in their guide you don't have to solder this but I think that's really stupid personally I think advertising is that stop it okay stop you're doing that oh nice now typically hat nuts aren't reusable but I managed to kind of crush it back on there okay all right so we can test then well first I'm gonna have to show you guys the before of course here we go so you pretty boring this is not the recommended way of doing this again if you wanted the recommended way would you be watching my video oh we're gonna ruin our floors here we go there's no steering on this floor oh shoot how's my phone is my phone okay oh it sticks out of my pocket sometimes it's okay so that hat not not a great solution just bending it back so this is our pretest this is with the original battery which has like a somewhat fresh charge it's not not super fresh but it's not like the first either so uh verse first gear second gear now it's really important for a reliable operation to install people do either 30 amp or 40 amp breakers in these things but I'm gonna do that later when I do my whole ESC upgrade with the sewing machine and pedal and all that kind of stuff so this stock connector no longer has any use we are wired up now baby hope that's reverse it's definitely faster that's first here and we need to move over to unit 101 started up to high gear oh oh that was a that was an undesirable this is really hard I can't even use I can't even use my foot oh really no I'm just using my hand oh lordy there we go oh yeah j-turn oh I tried to throw I tried to throw it in forward Wow the tractions actually pretty good out here so there she is she's a little toasty she's definitely ready to be left to cool and then charged and that's it that's a DIY battery for better or for worse and this whole Ness is brought to you by memory Express memory Express is the place to go if you need any kind of electronics products in Canada they've got computers tablets phones home theaters pretty much you name it and they've got it and with their uber price beat guarantee they will beat any price both in store and online from a Canadian retailer so go check them out at the link in the video description so thanks for watching guys if you disliked this video you can hit that button but if you liked it hit like get subscribed and maybe consider checking out where to buy the stuff we featured at the link in the video description also down there is our merch store which has cool shirts like this one and our community forum which you should definitely join
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.