How To Bypass Stock Sur-Ron Battery for more power!

[Music] everyone and welcome back to the channel we just finished installing the bac 4000 kit from emoto bros on cole's bike here and we're looking to maximize the stock power that you can get out of this battery that comes with the siron we're going to be using our bms bypass kit that we are selling on emotobros.com so you can go pick one of these up or if you want to make one yourself they're not too hard to make so if you know how to uh or if you know the risks associated with bypassing your battery you can skip ahead um to the part in the video but if you're not aware you can stick around and we'll tell you how to do it safely and the risks that are involved so the stock bms has a hard limit at 85 amps and it's not programmable meaning that you can only get 5000 watts continuous out of this bms before it'll start shutting off at full throttle to go around that and get more power you do something called a bms bypass and what that is is clipping a wire on the discharge side so that when your cells are discharging they're not being fed through the bms and then to the the port here where it's discharged at so what that does is it allows you to pull as much amperage as this controller demands and the bms is not telling it to slow down at all so what that means for you if you have the emoto bros kit when you go into the egg rider app there will be your max power there are um these cells are in a a 10 stack they're they're a 10 p and there's they have a max discharge rate of 10 amps each and in a parallel of 10 that means that there's 100 amps max discharge it's 67 volts which is full charge on a 60 volt battery that's a little over 7 000 watts so you set this to 7000 on your egg rider app and your controller will pull no more than 10 amps per cell which is an area for this battery where you're not going to be damaging it that's important yes you can turn your controller above 7000 and this battery will do it but you risk damaging your cells and that's not worth it so another uh another thing that comes with that is that your battery will not turn off on its own when it gets down to low charge and you can't use your your indicator here anymore because when you clip that wire it makes the indicator delayed by a couple of hours so when you charge your battery and let it like sit overnight this indicator will be accurate but when you're on a ride you have to let it catch up for about two hours before it tells you an accurate percentage here to get around that our display tells you the exact voltage and percentage of the battery real time so you don't risk damaging it so what you're going to need to do on the discharge side is you need to keep monitor your percentage and voltage here what we do is we have a max voltage of 4.2 per cell which gives us a high end of 67 volts and then we have a minimum voltage of 3.2 for so and that gives us a minimum voltage of around 52 volts you set those in the egg rider app which we will show in the video we released on how to install this kit but you set those and you need to be monitoring that because if your battery drops below 52 volts you are entering a range where you risk doing damage to the cells and you really should stop riding it it'll still work but you should really consider not continuing to ride so another misconception is that you're going to have to do some weird things when you're charging that's completely not true when you plug this bike in there there's a charge side and a discharge side like i was saying you're doing nothing to the charge side so what's going to happen is when you plug it in it'll charge just like normal it'll limit it it'll limit the inflow of current and when your battery reaches full charge it'll the or the the charger like normal will turn itself off and when you bypass it's good to leave it plugged in a little bit longer and let the cells just balance that's when you're at 100 and you hear your charger turning on and off even though you're at 100 that's the cell's bouncing it's really important to let it do that so those are some of the risks involved with doing it now we're going to go inside we're going to use our emoto bros bypass kit and do the bypass on the stock battery so now that we're inside i'm gonna take a two and a half millimeter allen on the end of a screw gun here and all these screws around the top of this battery here we're gonna pull every single one of those out so once you have those 10 screws out put them in a safe place and then this lid here will pop up if you'll notice there's this o-ring that goes around the battery here you need to really keep track of that turn this so you can see what the inside looks like so this this rubber seal is down here on the low side um and it's stuck down here it's not like glued on or anything but you you really want this up in this groove here we can worry about that when we put it back together so basically what we're gonna do here is this is your discharge side so we're gonna take and splice this wire and then these three poles down here we're gonna take our emoto bros bypass kit and when we slice this wire this end here you'll just cap it you won't do anything with that and then this will butt connect in like that to this wire and then these three with the uh the three ring lugs on the end here will go there there and there so really the only thing you need for this kit is you're gonna need a lighter for the heat shrink and you're gonna need something to crimp this six gauge butt connector um you can use a strong pair of pliers an actual crimping tool is what i would recommend but either way you're going to need some way to do that so what we're going to do is we're going to get a pair of pliers here and a flathead screwdriver we're going to cut this wire and you want to cut it towards the um towards the heat shrink here so you get a lot to work with and then we're going to use the flathead to take this uh this insulative putty stuff off these terminals here and we're going to need to replace that so one of the things you should also buy is some sort of insulative material that you can spread over this lug we're going to use rtv silicone but there's a lot of things out there that you could use that insulate and harden up like this so we'll be right back with a pair of pliers and a screwdriver before we cut any wires and remove any of this putty it's very important to realize that this is still a live battery there's no way to discharge these cells and make them not dangerous you need to be doing this in an area with concrete around you preferably in a garage where the doors open or even outside because if you short anything in here and one of these cells catch fire it's like an inferno that you literally cannot stop so it's extremely important that you do everything safe we're going to show you how to do that so you don't need to be concerned but be very weary for example when i cut this wire you need to keep track of where both ends of this wire are and they're not swinging down and touching the positive side of things over here if negative touches anything positive there's going to be an issue so really try and avoid that so what we're going to do first is take this screwdriver here and we're going to just remove this putty sometimes the edges you can find an edge that's already folded up and just kind of get under it and peel it up like this and you you can touch these these connections here uh and it's not an issue it's when you start connecting positive and negative uh with no installation then it becomes an issue so just find your find your little gaps here get under it with a screwdriver and uh just take all this off and then we will be back with you when we have finished that so one more time before we cut this it's very important that you do not short anything and we also are not responsible if you mess this up in any way we're showing you a safe way to do it but there there are unsafe ways you could do this and really mess things up so uh pay attention do it the right way and and be extra safe so we've gotten that the insulative covers off the the rings here and now we're going to go up here and and cut this wire one more thing that i want to mention while you're in here digging around with your screwdriver and you go to like pull a piece watch the end of your screwdriver because this is metal this is conductive if you start touching things up in here you're at risk for whatever happens so we're gonna cut the wire like that the negative side and the first thing we want to do is pull these so that they're not these can touch obviously but we want them to just be bent out of the way of the board here and anything on the positive side this side here like we were saying just needs to be covered you can cover it any way you want we're just going to electrical tape this end off there might be a safer way to do it a better way to do it but this is going to be inside a housing that's waterproof waterproof and realistically the tape shouldn't come off and you shouldn't have any issues with that um but again you could do that a different way if you want so we're going to get some tape and cover this up and then we're going to strip this wire here and we'll be back with you so before we strip this very important slide the heat shrink on before you make the connection and this heat shrink will be included in the kit uh so you want to take your wire strippers if you don't have strippers you can use a knife but we do so we're going to do it this way cut it and pull it off like that and this is braided too and not solid core so you won't want to twist these together really make sure that's a tight bundle then we're gonna take this other end here and we're gonna connect this before we do that there's metal on the end of this and you're connecting it to the negative side these cannot be touching things in here other than this negative side here so again just just be very conscious of where pieces of metal are that you're connecting to live wires before you do it another thing got that taped off so that ends safe now and that can just be tucked out of the way like that so we're going to take and put this over this end and then we're going to use this pair of crimpers here most people probably aren't going to have something like crimpers um like heavy duty six gauge crimpers but you can just use a pair of pliers uh or you can even solder this into here uh if you're comfortable doing that but you need to make sure this connection's solid so after you crimp it hold here and here and pull uh and make sure that that connection's tight you do not want this coming off in the middle of a ride and then you're out of luck because you have no power going to your bike now so we're going to crimp this on and then we'll get back with you so with this pigtail here that you have you need to be really mindful when you connect are connecting to this negative side here that you watch your metal leads on this end and if they're not getting towards these positive wires or anywhere up near this board and it helps to have an extra set of hands and obviously these crimpers you don't need these it's going to make it a lot easier if you have an actual crimping tool but there are i mean normal pliers can crimp things like this you just need to tug on it at the end and make sure that your crimp is good so when you go to do this you're going to want to push this wire as far as you can into here and then crimp where it starts to neck at the very end and then we'll do a second crimp uh farther in so it's very important that you get these as far in as you can go and really hold them tight there you want to get some of that shielding in there if possible so we're just going to go around i want to get right at the end here and also these crimpers are metal so be careful where these are there's all the way in yep all right give it a crimp there and we'll come up a little further and give it a second crimp there and now give it a good tug so that's that's tight now spawn on that pretty good that's what you want just like us you may have it slip out the first time if you crimp this though to the point where these aren't the like you squish them in a weird way and then this backs out you can find these connectors on amazon if you ruin the one we send with you um we may actually consider giving you two of these in a kit in case you mess one up but yeah just be mindful that if you mess up this crimper and you can't slide this in back in you're gonna have to replace it so now that's fully connected we're gonna slide the heat shrink over everything and then we're going to get a lighter and uh and heat that up and make sure all that connection is nice and secure in there and that there's no way any of those leads can touch so we're gonna get a lighter and we'll be back with you all right we're gonna shrink this down with this torch here should probably use something not as aggressive but it's all we had around us so that's what we're gonna use all right just like that it's all together everything's nice and tight and now we can move on to removing these three screws here and connecting your leads so what i like to do first is start on this back one since it's the one that's the hardest to reach and what we're going to do is just loosen this middle one and also these screws have a very like oddly shaped head it looks like it's going to be a small screw but we're using a number two on it and make sure to put a good amount of down pressure because if you don't they can strip but we're going to want to loosen those and then spin these two out of the way and then we'll come back to this one back here and we need to fully undo this one we're just going to do one at a time here and there's a little washer on here and so the order of these is going to be the screw and then the washer then the stock eyelet and then the one that comes in our kit and you're just going to want to feed this like this through here down onto that and then simply just screw this back in [Music] may take a little bit of finessing around with these just to get it back where you need it but i'm going to situate these wires in a way that this lid is going to go back on easily because now we've got more wires in here than we started with and it's gonna be a little tight but it will go so we're gonna connect all these and then we'll be back with you so now that we have our three rings over here tightened down we're going to take this uh ultra copper rtv silicone i know this name is a really horrible name for them to choose it says ultra copper there's actually not a copper in here so this is not conductive this is this is insulative just a weird name so we're going to apply this to each of these rings kind of try and make it look like this you probably won't be able to make it look as pretty um but that's not really the point this is in a battery you won't be able to see it we're going to put this on here and then we are going to take this battery inside or somewhere where it's above 70 degrees and let this harden for a couple hours and then we'll we'll come back so i'm going to apply this real quick we'll show you what that looks like and then we're going to take the battery inside and let that harden up so that's like to get a large amount on my finger again this probably isn't going to look pretty but you just really want to get the exposed metal on those terminals covered up with each one kind of try and get these wires out of the way it's not always possible all right i'm gonna get a paper towel and kind of clean up around the rim here because that's that gasket that was here we peeled it off and we stuck it back up on the upper half because that's going to make it easier to install that's actually kind of one of the worst parts but since that's out of the way i'm going to clean this so that it makes a good seal and then we're going to just take this battery inside and we're just going to let it sit like this depending on what you use you just want to make sure it's firm this stuff in particular it's not going to get like hard like this stuff will it'll still feel a little bit pliable but just let it sit inside there's instructions on the back for how long it usually takes follow those and we'll come back with you to reassemble the two halves together when this is dry all right so we let that rtv dry for a couple hours and now as you can see it's still you know a lot squishier than the stuff that was on there from the factory but this will do the job it's dry to the touch it's not on my hand anymore so it's ready to put the battery back together so we're gonna get our allen wrench that's on the impact gun out again and we're going to put the lid back on now you have to be mindful of that gasket falling out and if it comes out it's kind of a pain to get all back in there but it went back together for me pretty easily so you want to be careful about not stripping these out because that will be a pretty big headache for you put that in there nice and light next ones what's all right so it looks like i'm having an issue with the gasket not um being perfectly set which is unfortunate and you're probably gonna struggle with it too but i'm gonna back out this side here and use the last screw to try and move that gasket around to get it seated properly i'm hoping i don't have to take the whole lid off but uh you only never know it's always a struggle i'll use a tiny little pick flathead to get in there all right you know i'm just gonna take this off again yep that's that sometimes you gotta fiddle with this guy a little bit more than you want to um fortunately that's just kind of the name of the game with this gasket doesn't seem to want to stay in there very well all right you don't need to slam these down with the impact as hard as they'll go you know just kind of cinch them down a little bit that's all you need all right so we have the battery fully assembled once you have your battery put back together you're ready to throw it back in your bike and see if it works i want to remind you that with the stock controller you're not going to see any change in performance you need to have an upgraded controller that's set up to draw the correct amount of power our controller kits will be going live on december 7th and also if you would like to purchase a bms bypass kit like the one that you saw in this video that is live as of now so head over to our website emotobros.com to check that out if you'd like to purchase one all right we're gonna put this back in the bike and see if we did it right wrap that in there plug her in flip your breaker close it up all right we have our controller set up so sport mode on power level 9 will have a 7 000 watt power draw if you are interested in seeing what the performance gains are after you bypass your battery then stay tuned because we'll be releasing a video on that soon thanks for watching our video and i hope you found it helpful if you did please consider the like button as it helps us out a lot also if you'd like to see more content like this please subscribe to our channel thanks for watching and have a nice day

Channel: E-Moto Bros

Views: 72,667

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Id: 7Yr4xDyoXAA

Length: 25min 19sec (1519 seconds)

Published: Mon Nov 23 2020