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  1. K

    Pure nickel ampacity test

    I did a simple test with a piece of pure nickel 30mm long and 6mm wide. I cut my positive battery output wire in half and soldered each end to this piece of nickel. I ran a constant current of 12 amps for 20 minutes and it never got hotter than 92 degrees F. The piece was wrapped in fish tape...
  2. K

    Bionx Li-M n 37v battery pack rebuild attempt

    I have rebuilt several of these batteries the following way: I would advise using a 10S common port BMS for this rebuild.. Pin 2 of the charging port should currently (or did) have a thermistor that connected to -chrg on the factory board - remove this wire from the factory board and connect...
  3. K

    Bionx or Polaris ebike parts wanted

    Thanks for the recommendation Marty. I've purchased through them in the past and they are out of just about everything now..
  4. K

    Bionx or Polaris ebike parts wanted

    Hello, I'm looking for spare battery parts (working or not) for these brands - mostly battery cases, bms, controllers etc. Thanks
  5. K

    Bafang BBS02b not turning on.

    I just went through this with a customer last week - his display went bad (so he says) and he bought a new one and plugged it in only it didn't work. He then brought it to me to look at and I noticed he bent one of the pins on the display cable which shorted out the controller. Bike is now fine...
  6. K

    Bafang 500c display - start in assist zero?

    Thanks for the comments. This particular customer is an older gentleman who is nervous about having it start up in level 1 and having any power and accidentally taking off versus starting up in zero with no chance of that happening... I do regularly use the programming cable on my systems which...
  7. K

    Bafang 500c display - start in assist zero?

    Hi, thanks for the reply. I have installed dozens if these in the last year and they all start in zero. The current customer wants it to start in zero which is really why I'm looking...I'll continue my search...thanks again
  8. K

    Bafang 500c display - start in assist zero?

    Hi, I have a new Bafang BBS-02B with a 500c display and I'm wondering if it can be programmed to power up in assist level zero instead of assist 1 which is the default.. Thanks, Kevin
  9. K

    Bionx Battery question

    Hi, I have rebuilt a 48 volt bionx battery and I can jumper the output plug (Pin A1 to pin 3) to turn on the bms.( I don't have the bike with me) I'm getting all the correct voltages at the pins after the 4 beep turn on confirmation no problem. My issue is when I plug in the charger (with the...
  10. K

    Beware of IMR Batteries - www.imrbatteries.com

    For what's it worth, I have had about 8 orders from IMR in the last few months and have never had a problem with them or the shipping. They almost always arrive exactly when predicted and everything is packaged very well. I've received well over 1,000 Samsung cells and not a single one had a...
  11. K

    bms with canbus

    I can tell you from personal experience the bms will still work fine after a rebuild on this bike (assuming it was fine before). I have also been looking for replacement bms boards for these with no luck yet, not because I need one now but I'm sure I will someday. Figuring out the canbus info...
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