Recent content by johnnyz

  1. J

    Surron plus BAC4000 and 50ah extra battery for sale

    Thanks, I will remember that for next time...but when I include videos of the bike and the battery build what is left to trust?..Shipping the bike??...
  2. J

    Surron plus BAC4000 and 50ah extra battery for sale

    I guess...I understood about the shipping but even if it cost $500 to ship it would have still been a deal..Ya, I do live in a hick town...but this site is not what it used to be..
  3. J

    Surron plus BAC4000 and 50ah extra battery for sale

    What in the world is wrong with people on here??..I SOLD the bike and the person gave me what I wanted. $6700 for a bike that has $10,000 in parts. The battery I made is worth $2000 alone!...I dont get it!!
  4. J

    Surron plus BAC4000 and 50ah extra battery for sale

    Ya me too!...The bike is a beast for sure...all I can say is that I had a wide big grin on my face while driving it..This thing needs someone (not me) who can push the thing to its limits...especially on off road trails..when I did the upgrade and the first ride it scared the crap out of...
  5. J

    Surron plus BAC4000 and 50ah extra battery for sale

    Wow...not one reply...this bike was in extremely short supply just a year ago..and is an amazing deal..
  6. J

    Surron plus BAC4000 and 50ah extra battery for sale

    Im selling my 2021 Surron that I purchased in June of last year. After all the upgrades, I took it for a ride in the snow but hit some ice and fell, pulling my hamstring and breaking 2 ribs..so at this point, I think I am a bit too old for this beast..Its been a great bike and I have upgraded...
  7. J

    Sevcon Controller, what BMS to use??

    Thanks to j bjork...thats some of the answers I was looking for..I can get a BMS to control LVC and HVL but would like it to modulate the power as the battery gets low..just wasnt sure if it could be done through the Sevcon Controller..same as the Charger... Will contact Sevcon and see what...
  8. J

    Sevcon Controller, what BMS to use??

    Thanks for the responses, but assuming that I dont know what I am doing because I have only dealt with ebikes, trikes, small motorcycles, now a Surron..and not a Sevcon controller and yes, a bank of batteries big enough to fry my ass... I know that I need to get a BMS that will work via...
  9. J

    Sevcon Controller, what BMS to use??

    The balance leads obviously do, but how would the BMS 1) stop the charge when High voltage is reached and then stop the discharge when low voltage is reached?
  10. J

    Sevcon Controller, what BMS to use??

    Why would I what?...Of course this needs a BMS, especially with Lifepo4...Yes I want to make a 30s 3p Battery with ONE BMS, I just dont know which one, and if there is a compatable BMS with this specific Sevcon controller.
  11. J

    Sevcon Controller, what BMS to use??

    Het there Im hoping someone can help me...I have a guy who wants to electrify his boat. I ordered 91 125ah BYD cells to make a 96 volt battery (33 kw) and he bought this kit. Its a Sevcon Gen 4. It has the motor, Controller, throttle, start button, kill button, Cooling plate for controller...
  12. J

    Sur-ron Battery Extender

    Hey there...thought I would post some pics, data, video (on Youtube) about my battery extender I am in the final phases of testing. I looked at the current product available and did not like what I saw so I decided to make my own. I purchased the cells and BMS from a vendor on Alibaba that I...
  13. J

    Looking for Surron controller

    I dont know how...but after repairing the battery pack the controller still lives!!..that's a robust unit!!..BMS is fried but I can install either a new one or source out another and install. Thanks to everyone.
  14. J

    Looking for Surron controller

    Hey...I dont know how I did it, but I reversed the positive and negative leads on my Surron controller, and well..the leads on the end of the battery burned right off..... I can save the battery but BMS I assume is fried..and controller..funny the breaker did not work..anyway..After buying a BAC...
  15. J

    Adding extender battery in parallel.

    Well..lol...the cells I am using have a very similar resistance and are close in capacity, so should be good. The cells I want to use which I am getting at a good price are EVE 2600 5C. There is another cell also an EVE 3000mah 3C continuous. These are guaranteed grade A but 60 cents more per...
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