Places fish paper and foam between the halves and switched on BMS Then Expoxy the other side of each battery halfĬonnected the two halves, had to cut some of the main tape - will re tape this soon Then attached the 6 cables to connect the two halves together, will solder these after connect BMS wires and wrapping each side. Fit BAC8000 and connect batteryĮpoxy strips for less chance of failed welds Next steps - connect main B negative to ant BMS - connect QS8 connector to main positive and the other side of BMS. used epoxy on the nickle strips to secure them down. Have a good day people, hopefully I dont blow myself up! If you have read this far your a king, if you help me out - your a god! Or shall i just solder the cables together? Or shall i crimp them together? I will obviously be soldering the XT60 & OS8 onto the ends of each cable, just wondering the best way to connect / splice the actual wires together.Īfter this, I still need to figure out a way to build a case and fit the BAC8000 & egg rider!! Question i have is could i use copper butt connectors to "splice" the 3 10AWG into the 8AWG Main Load wires & charger cables? If so what ones shall i use? I have done some digging and i cant see any are rated for high enough AMPs. I am awaiting a 10A 72V charger purchased from in the UK. I will also connect some 10 AWG wires with an XT60 to the positive and negatives for charging. I will use 3x10 AWG wires on the negative side to connect to the BMS, then from the BMS to the 8 AWG wire to the QS8 plug.
I will be buying 10 AWG wire and running 3 of them off of the main positive side battery and splicing into 8 AWG wire for the surron positive load connection load - which will connect via the QS8 plug (AKA OSE-8) I will be buying 12 AWG wire, and using 6 of them to connect each 1/2 of the battery. My cable plan taken directly from the lite speed website on their battery - if any experts can suggest any different let me know!! I'm leaving each end off as I intend to solder the cables for -/+ and connecting the two halves to the nickel before spot welding it to the batteries. So - as you can see, I have one half almost fully spot welded. I have triple stacked the nickel in some places as per the photos The spot welder from amazon, seems to be doing the job and making decent welds I have 3d printed the 18650 cell holders on a small printer - hence they are made up of multiple parts I have ordered these connectors for powering the surron (will build another power cable for the surron) "Black Anti Spark Connector Male And Female QS8 High Current" I intend to create two external cables - one for powering the surron and one xt60 type of connection.
LIGHTSPEED BATTERY SUR RON PATCH
These Foam sheets for eventually padding the battery outĪlso ordered some of this to insulate the batter after build: "120mm 18650 Battery Insulation Gasket Paper Li-ion Cell Insulating Patch Pad" This Tape - Accessotech 100ft Heat Resistant High Temperature Polyimide Tape Hot for Masking Soldering Purchased these pure nickel strips 0.15x8x100mm I have also ordered a bac8000 from them and the egg rider and awaiting that to arrive.
I am attempting to make a battery like this : I have basically read the description and trying to mirror that. I also will be using an ANT BMS 20s 300A.īuilding these into a 20s10p configuration, battery should give 200AMPs - around 2.1KW of power (very close to the stock surron battery KW)Ĭomparison of stock battery and my 72v battery stats: Thought id document it on here for others as i couldnt find anything on the net dedicated to building surron batteries DIY style! I also have a few questions for the community on here! Please dont judge me too much, my experience before under taking this has been limited to FPV drones If I manage to build this battery, I will prob go ahead and build a 42AH battery with 21700's. I have tested each battery with a volt meter and they are all 3.50 volts bang on.
They were originally purchased from fogstar in the UK so are genuine. They had been previously spot welded but all previous nickel removed. I managed to obtain 200 unused "new" cells quite cheap (£1.20 each) so I have decided to undertake a battery build for my surron.
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