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  1. M

    what kind of cells are in NIU e-moped packs?

    there's a ton of these for sale in my area for like 150. mostly 60v in the range of 25-35ah. I can't find what cell type they use so if anyone knows what cells are in any particular battery/vehicle type please post.
  2. M

    is this a lead acid or a lithium battery?

    found a large, heavy metal-cased battery sitting neatly on top of a construction dumpster. when I opened it I thought it was a lead acid just based on appearance (I don't even know why I came to that conclusion.. besides the weight of the thing I guess because I wasn't seeing the prismatic cells...
  3. M

    4-in-1 thread: bad cell/group in pack? Batt pack ID (pic)? confusing (unrelated) cell test. Possible to "age" cell for replacement in a pack?

    So I have a little 14 inch folder with a hub motor that I was looking to give to someone else. The bike should have a 10s3p(staggered cell orientation, side by side grid is too large) pack which fits snugly inside the main horizontal tube, accessible when broken open to fold. When I bought this...
  4. M

    need help sourcing replacement nylon motor gears. Pics and specs in post

    I have a Kuo A2B 20 inch folder that I was just getting to enjoy when I heard noises coming from the motor. took it apart and sure enough some of the teeth were missing and others looked like they were going. I also don't know what to call it. when I search nylon hub motor gears, all I see are...
  5. M

    looking to buy a kt controller. the prices of the 250w-1000w are within $10. Im thinking high power so I can use it on weak+strong bikes. logical?

    Since programming the controller is the entire impetus behind purchasing it I imagine that I can just limit whatever whatever parameters I'd like to create safe conditions for whatever motor on using it with correct? I have the lcd 3 display (which I bought before can you about display...
  6. M

    is there a page with info on real/likely specs, ID marks, $ range, etc for the dozens of motors common on ali, ebay, etc?

    I'm still going generic, and when I look for used motors, most come out of existing products. so I'm curious about the specs and opinions on the DD and geared motors available for sale online and those sold in a particular model by an e bike brand. for instance, images are of two DD hub motors...
  7. M

    looking for recs to source a low cost, high speed motor for a 20 inch wheel. more details within

    I have a 700c/28" dog of a cheap schwinn that I bought used with a (purportedly 1500w) direct drive motor running at 52v (4p battery. hailong style. this thing is fast. faster than I want to take it with how the bike is set up. I finally took out this 250w 20 inch geared motor and the motor is...
  8. M

    tired of messing with bosch activeline. possible to bypass bosch controller and run motor directly with generic via phase wires?

    A friend has given me this rather interesting tern bike with a bosch activeline motor. hes not super concerned about the bike, just wants me to see if I can get it running. 1st problem: chargers for these walled gardens are over a hundred bucks.. he nor I are spending that on what may be a...
  9. M

    Best resources for converting hub motor (bike or e-scooter) to use as mid-drive?

    I should probably just buy a mid-drive since I've never actually used one so I only have vague conceptions (likely mis-conceptions in many cases), but I'm interested in the idea. or at least into being able to more accurately contemplate the practicality of the concept so I can convince myself...
  10. M

    what are the purpose/use of the Multiple data meter(1), hall meter(1), phase meter wire(1)?

    I've got more than one controller with Multiple data meter(1), hall meter(1), phase meter wire(1) wires- one wire for each label. What's their purpose? additionally, is there a way to determine the communication protocol of a controller (the generic chinese type)- using a scope, identifying the...
  11. M

    Type of temperature sensor to use in motor (thermocouple, NTC thermistor, resistance thermocouple)?

    What kind of temp sensors are used for sensing motor temp? Besides on the inside or outside of the motor case and using that as a reference for what's going on inside, what/where are the probe locations? Geared feels like it would be more difficult with the more moving parts inside. I've used...
  12. M

    determining the over/under voltage capability of motors?

    Discerning the peak voltage for a controller seems more straightforward to me by looking at the voltage ratings on the caps and checking the spec sheets for the output semiconductor devices. However for the motor... since no one actually provides even an index card of truly useful information...
  13. M

    Why are E-Scooters/their motors listed as having SO much more power handling capacity than E-bikes?

    I mean, E Bikes I see 250, 350, 500, 750, 1000 and 1,500. Most Everyone here has seen enough ads to have a general feeling about the number of bikes advertised (and consequentially sold?) in what power groupings- legal limits in areas make this almost not a guess. I'm sure in Germany 99% of all...
  14. M

    just got a "needs repair" A2B Kuo+ 20" folder 36v. any tips, tricks, info tidbits about the motor, controller, battery- anything would be appreciated.

    so yea, just got an a2b folder for $69 from an illegal migrant at the brooklyn navy yard (I speak really poor spanish, but I have never met ANYONE who can not speak a word of english. Or seems to make zero effort to make themselves understood. quite a bizzare experience, and that's not even...
  15. M

    possible to convert (buy new axle, case, etc) rear bafang 8fun hub w single speed+roller brake to front?

    I got a 26" rear wheel containing a 36v bafang 8fun motor with a single speed sprocket on one side and a roller brake on the other. I would potentially leave the roller brake since I can easily adapt that to the fork I have. for the gear side- I already opened the sprocket side and dumped the...
  16. M

    Meaning of generic controller wiring labels? Index + review of forum-member bought controllers? and more questions

    so I fried my controller (I think. most likely. could be the display) by connecting a tail light that had a two pin juliet connector to a free and (of course) unlabeled two pin plug on my controller. apparently no protection features on that output. the dingleberrys at ebikeling didn't send me...
  17. M

    Display for battery peak/avg/instant amperage;ampHr/watt hours consumed, voltage, batt temp, motor temp, etc

    so I just got my first ebike : used decent standard diamond suspensionless disc brake 27 inch wheel bike converted with a direct drive hub motor by ebikeling that I interpret as the 1500 watt- Ebikeling EBLG150020060164 is the only thing on the motor. controller is :ebikeling DC moto controller...
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