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  1. K

    Testing a non-running scooter (new project!)

    Resurrecting this thread a bit... Been 4 years, but I got a second ebay battery pack and just finally got it registered today. This thing is fairly zippy, stops well, and will generally make a nice little run-about for errands around town. I definitely think the controller is holding it...
  2. K

    Knight Electric Motorcycle 5000w

    If you can do that, i know I for one would be very interested especially without battery... And i imagine there are plenty of other folks who would like a solid base to put parts on.
  3. K

    Crazy Trike concept, need some help/advice

    Some other options from the depths of the atomic zombie forums: http://www.staton-inc.com/store/index.php?p=product&id=179 http://www.staton-inc.com/store/index.php?p=product&id=184 Commonly used in Pedicabs, would probably fit your use case.
  4. K

    Testing a non-running scooter (new project!)

    The ebay seller is shipping me a new charger, but from China, so hopefully that one will arrive intact. Took the scooter out last night for the first time, it'll do 30mph fairly easily and has no issues with hills. The gauge style voltimeter on the dash dips pretty far on full throttle, like...
  5. K

    Testing a non-running scooter (new project!)

    Eeets alive! Got home late, and can't get it out of the garage as my neighbor parked a little tight against the door... but hey. The chinese ebay LiFePo4 battery came today, measured at 53.3v out of the box. The included charger was smashed, shattered plastic casing everywhere. Electronics...
  6. K

    Testing a non-running scooter (new project!)

    Nice, thanks! That does indeed look identical! If only I could read Dutch, but it's still way more info than i had before. :D
  7. K

    Testing a non-running scooter (new project!)

    Thanks John, Yeah, I'll isolate any bad pairs, do some math, and see what makes the most sense. Easiest would definitely be to just swap out the failed pairs.
  8. K

    Testing a non-running scooter (new project!)

    Yup, same one I grabbed from another seller (with basically the same info, but more positive reviews). I'll post up some first-hand info once I get it next week.
  9. K

    Testing a non-running scooter (new project!)

    There were two sellers selling the same thing, which was odd. The one I bought from was imotorbattery. Located in China, but shipped from SF. It's already en-route, should be on my porch on Monday (was hoping to play this weekend but nooooo). I'll report back once I get it, I expect the basic...
  10. K

    Testing a non-running scooter (new project!)

    Awesome, thanks for the heads up! I'll look into that controller as a replacement. Do you have the same scooter? There's ZERO info out there on the web, would love any details you know if so, like wiring diagrams, where things are located, etc. The chemistry of all the lithium variants is...
  11. K

    Testing a non-running scooter (new project!)

    aaaand after all and MANY hours of web research, I ended up grabbing a 20ah LiFePo4 off ebay from a seller in California for under $500. That'll let me get this bike back up and running while I learn how to rebuild a Lifepo pack on my own.
  12. K

    Testing a non-running scooter (new project!)

    If I have enough cells, is there any reason not to make the final product a 13s3p pack?
  13. K

    Testing a non-running scooter (new project!)

    So I couldn't get voltages that made any sense out of the BMS connector, and I unwrapped the pack to try to get a better idea of what was going on. It's a 13s2p pack! I was surprised. :D Some of the cells were reading 3.6-3.9v across the tabs, and some are reading as low as 1.x volts... and...
  14. K

    Testing a non-running scooter (new project!)

    I was loathe to charge them given the puffiness, not a fan of burning my house down... I'm going to take them out to the garage and hook them up today. Anyone have a recomendation for an individual pack charger? I may disassemble these two stacks, scavenge the good cells, and reassemble a...
  15. K

    Testing a non-running scooter (new project!)

    Yeah, that was an assumption based on the charger, I was tired. :D The BMS has 12 gray, 1 red, and 1 black wire, so I'm guessing 14 cells... EDIT: 13s2p
  16. K

    Testing a non-running scooter (new project!)

    Appears to be a 16 cell pack. The 35ish is from the pack, I can't seem to get a reading directly off the charger. (I think it's too smart to push voltage with no load attached.) The charger is a WL-089-02, which appears to be a common charger. I think the green LED is toast, but it appears to...
  17. K

    Testing a non-running scooter (new project!)

    Yeah, ok. it'll take a bit of charge but it's distinctly puffy. Guessing I should stop messing with them and recycle them? Or is a BMS going to keep it safe enough to get to 48v and test with?
  18. K

    Testing a non-running scooter (new project!)

    Other pack reads 33.3v, not so good. And distinctly puffing out the plastic casing. When plugged into the charger, the output pins are reading 0.47v, instead of the 35ish it reads the rest of the time. Good? Bad? I'm guessing the BMS on the battery is shunting most of the input voltage away...
  19. K

    Testing a non-running scooter (new project!)

    Figured as much, thanks for the confirmation. It looks like the charger (WL-089-02) isn't recognizing the battery at all, the wire was repaired once. Going to see if there's a break in the wire that's causing it to not find the pack. Disassembled one of the packs, getting 36.2v off the...
  20. K

    Testing a non-running scooter (new project!)

    Hey all, long time lurker, first time poster. A friend of mine mentioned he had a 48v scooter in his garage that had stopped running, and he wanted someone to take it off his hands. Done and done. :D It's a Libert-e Xero, vespa looking. There's very little info out there on the web about...
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