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  1. c111jp

    Kelly KLS4812S Programming interface cable?

    I did phase identification couple of times already but no changes really. Just to clarify, controller doesn't get very hot but just warmer than my generic controllers. I would say about 45c in normal use vs about body temperature for generic controllers. Noticed there is controller temperature...
  2. c111jp

    Kelly KLS4812S Programming interface cable?

    Ok, I've got the controller and here are my impressions so far in case somebody is trying to decide whether to ditch their usual chinese controller for something more $$ like this. I also have few questions below related to programming options etc. First of all, the thing is TINY! It's way...
  3. c111jp

    Kelly KLS4812S Programming interface cable?

    It says "Configurable limit for motor current and battery current" so I guess current is adjustable. The more reason to be able to program the controller. I think being reasonably small controller it wouldn't need the precharge for 48V but I could be wrong. Never had any problems with my...
  4. c111jp

    Kelly KLS4812S Programming interface cable?

    Hi, sorry for yet another controller thread. I am looking for controller when this Kelly KLS4812S popped up locally for sale. It's apparently used only for a week, size is pretty compact and it seems to be quite better than generic chinese controllers. Since it's programmable, I don't know...
  5. c111jp

    Direct Drive hub motor grind and noise, "dead spot"

    General opinon is that kapton is pretty poor at heat conductivity so that was the main reason for swap to silpads. I couldn't find any conclusive numbers on thermal conductivity though as there seems to be more types of kapton. FETs mount on the bar and bar screws into case on this controller...
  6. c111jp

    Direct Drive hub motor grind and noise, "dead spot"

    Sorry for spamming but I've figured it's better to record the sound than trying to describe it with 50 different onomatopoeias lol. I've tried to remove the wind and isolate the sound in post processing as much as possible . In the video I am "opening" and "closing" throttle to provoke the...
  7. c111jp

    Direct Drive hub motor grind and noise, "dead spot"

    Ok, I've got the new controller. It's XLD Brainpower LSD149. It's a slight upgrade in any way over old one and it's of same size. It's 15Mosfet vs 12Mosfet on old (and fets are rated higher). It has regen connector so connecting it will enable regen, disconnecting it will disable it. The...
  8. c111jp

    XLD Brainpower LSD149 - Remove LVC

    Thanks, all great info here. Looking at it a bit better, 2.8 is definitely pushing it but 3.0 should be fine for emergency (vs 3.2 now). Just to be clear, cells will hardly ever see less than 3.3v and more than 3.9v in my day to day usage but was looking into removing LVC for "emergency"...
  9. c111jp

    KT 30A 12MOSFET controller - regen and programming?

    Got reply from another seller which is selling same controller and they too said it doesn't have regen. I've decided to skip on it. I've received XLD Brainpower one and it's going to be more than enough. It already has regen, self learning, speed connector (which is just basically bridging K1...
  10. c111jp

    XLD Brainpower LSD149 - Remove LVC

    I've bought a XLD Brainpower LSD149 controller. On the case, lower voltage is indicated as 42V for 48V battery. That's 3.2v per cell. I have Samsung 50E that can go safely lower than that so I want to lower or ideally remove Low Voltage Cut out entirely. I also have Bluetooth BMS so I can...
  11. c111jp

    KT 30A 12MOSFET controller - regen and programming?

    Yup, wanted to write controller/ motor (since winding will also affect it). What I want to say is, I don't want controller to stand in the way with limiters, or at least as little as possible. Anyway, got this controller in the meantime since it was locally available while I find a "perfect"...
  12. c111jp

    KT 30A 12MOSFET controller - regen and programming?

    Thanks for your input all. Interesting since the seller selling it is named KT (Kunteng) https://www.aliexpress.com/store/911380051?spm=a2g0o.detail.100005.1.468660e3CLudf3 So fake profile? Does anyone have a real source where I could get their controllers? Or can somebody recommend something...
  13. c111jp

    KT 30A 12MOSFET controller - regen and programming?

    Does anyone know anything about these 30A KT controllers? https://www.aliexpress.com/item/1005005342199746.html?pdp_npi=3%40dis%21USD%21US%20%2426.03%21US%20%2420.30%21%21%21%21%21%402101c5b116821775336528932ef997%2112000032681124083%21im%21%21 I'm linking the one from other seller but KT is...
  14. c111jp

    Direct Drive hub motor grind and noise, "dead spot"

    Thanks everyone for your input. Issue is "resolved" so here's an update. The magnets in the motor are all rock solid and there are no rubbing traces. My controller has no self learning wires and on the board, only thing that looks like it could potentially fit the description are 2x Q right...
  15. c111jp

    Direct Drive hub motor grind and noise, "dead spot"

    Ok, I've did a mistake. I ignored my "If it ain't broken, don't fix it" rule and now my bike is giving me headaches. I have a direct drive rear hub motor. Last time I rode it was few months ago and it was working perfectly fine. In the meantime I've did following: Upgraded to new battery...
  16. c111jp

    Rear hub motor wobble, axle or housing?

    Not a bad idea if in pinch, with all precautions taken of course. But honestly mine is stuck so strong that it doesn't seem like this would work. That's what I was thinking since I didn't mark anything. But then again that would mean they need to match every single one in the factory and that...
  17. c111jp

    Rear hub motor wobble, axle or housing?

    I did a stupid thing... I have this style of rear hub motor. Has 500w stamped on it but I see same motor being sold as 500-1500w usually. Been using it for 9 000km - 2 years without any problems (bought it used, not sure how much it did before but it was nearly new). I wanted to upgrade phase...
  18. c111jp

    Samsung 50E vs LG M48 vs "Tesla" (help me choose new battery pack)

    I usually add extra rivet nut or two to the frame or drill mount if necessary. I always mount it with 3 screws and never had a problem after years of abuse. Anyway, I've bought UPP 48V 20Ah pack with 50E cells and I paid extra for balancing function. Took a while to get it but it's here. Didn't...
  19. c111jp

    Samsung 50E vs LG M48 vs "Tesla" (help me choose new battery pack)

    All cell groups are hooked up to BMS's Balancing port (B).
  20. c111jp

    Samsung 50E vs LG M48 vs "Tesla" (help me choose new battery pack)

    Definitely not expensive when checking in dollars. As I've mentioned above, problem is since I'm buying in yen, due to inflation I will be paying quite a bit more than someone earning and paying in USD. Usually eoughly 600$ = 60 000yen but now 400$ = 60 000yen (the price of pack is 60 000yen)...
  21. c111jp

    Samsung 50E vs LG M48 vs "Tesla" (help me choose new battery pack)

    Got it. So unmatched cells which is most likely in this case and no balancing function by default is definitely not ideal. Considering all of this, I think the pack is way too expensive for what it is. Not sure which direction I should look into or what I should negotiate with them from this...
  22. c111jp

    Samsung 50E vs LG M48 vs "Tesla" (help me choose new battery pack)

    Sure, here is my question: "I have one more question regarding BMS. Does this battery have a cell balancing function? It was pointed out to me that some of your packs don't use BMS with balancing function. Thank you" UPP reply: "default BMS is without balance, add 20USD can customize balanced...
  23. c111jp

    Samsung 50E vs LG M48 vs "Tesla" (help me choose new battery pack)

    Absolutely, I'm sure the build quality is outstanding, and prices aren't actually that bad either. What I'm thinking though is they are still limited by the cells they use just like everyone else so the longevity would depend on that... So I'm trying to determine if cheaper sellers also use...
  24. c111jp

    Samsung 50E vs LG M48 vs "Tesla" (help me choose new battery pack)

    Thanks for your input. Yeah, that's what I'm thinking, definitely not ideal kind of sellers but seem like only option considering everything right now. I actually mentioned fire cases to UPP and they said, I quote : "the fire caused due to the customer not correctly using ". I guess there is...
  25. c111jp

    Samsung 50E vs LG M48 vs "Tesla" (help me choose new battery pack)

    How's it going? I currently have 13s5p 48v 17.5ah hailong2 battery with Samsung 35E cells (don't know which gen or version or even if they are genuine). Which cells would you recommend as an upgrade to 35E? I'm mainly looking to increase capacity and charging speed. I do want to keep haillong2...
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