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  1. S

    REPLACING EBAY EBIKE WHEEL

    Hello, I bought a rear 48-volt ebike conversion kit from eBay a few months ago. After a few rides, I noticed the wheel was out of true and the spokes nipples were rusting. After, trying to true the wheel some of the spokes nipples broke due to being rusted and cheaply made. The wheel that came...
  2. S

    WELDING STRENTH FOR EBIKE BATTERY

    Thank
  3. S

    WELDING STRENTH FOR EBIKE BATTERY

    Hello, I am building my first ebike battery. I would like a few inputs: I 65 cells Samsung 30Q and Panasonic NCR 18650 PF. I will be building a 48 Volt battery with 13 Cells in series and 5 cells in parallel, I will be placing the cells in a hailong battery case that can hold 65 - 18650 cells...
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    EBIKE BMS MODIFICATION

    I bought a BMS from Aliexpress for my 11.6 ah - 48-volt e-bike battery. My battery is made of Panasonic NCR18650PF, I bought the BMS from Aliexpress here is the link...
  5. S

    NEED HELP CHOOSING BMS

    Thank
  6. S

    NEED HELP CHOOSING BMS

    Hello ebikers I am shopping for a BMS for my 48 volts (11.6ah) battery made of Panasonic NCF18650PF. I will be using the battery with my 1000 watts motor (My controller is a sinewave 48 volt with a max output current of 26 amp). I am a newbie with BMS. Does how many MOSFETs is a BMS made of...
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    NEED HELP FIXING MY EBIKE BATTERY (BMS)

    I solved the problem. it turns out to be the connector on the shark also know as hailong or down tube battery case. The connectors are somehow damaged. I found out about this by replacing the positive and B- (negative of the battery connecting to the BMS and voila my e-bike power on without issue.
  8. S

    NEED HELP FIXING MY EBIKE BATTERY (BMS)

    I just tested the battery with a voltmeter on the positive and negative of the controller after installing the battery on the bike. The voltage was 50 volts then after I tried to switch the bike's display on the voltage went down from 50 volts to 9 volts and the display does not power on. The...
  9. S

    NEED HELP FIXING MY EBIKE BATTERY (BMS)

    Hello Ebikers, I am running into some issue with my e-bike 10.4 ah - 48-volts battery (My battery pack is made of Samsung 26F). My e-bike has a sine wave dual voltage ( 36volts /48 volts) controller rated at 25 amp max discharge current. Lately, I was riding my e-bike and I notice on the...
  10. S

    LOOSE EBIKE DISC BRAKE HOLE

    Hello Ebikers, I am having an issue with my rear e-bike wheel. I bought a rear wheel e-bike conversion kit from eBay (48V 1000W Electric Bicycle Cycle E Bike 26"Conversion Kit Hub Motor Rear Wheel). The disc brake holes on the wheel are loose I replace the standard screws that came with the kit...
  11. S

    What Fuse to choose for my 48 volt - 1000W ebike?

    Hello Ebikers I own an e-bike with a 1000 watt motor, 25 amp sinewave Controller and a 48 volts- 11.6 ah battery made of Panasonic NCR18650F, my battery has a 30 amp BMS. I mostly use the throttle on my e-bike mostly to get from my home to work and back from work to home. That is about 10 miles...
  12. S

    NEED BMS FOR MY BATTERY (DOWN TUBE- HAILONG BATTERY CASE)

    Thank. The seller confirmed the new BMS will work fine with my battery
  13. S

    NEED BMS FOR MY BATTERY (DOWN TUBE- HAILONG BATTERY CASE)

    The old BMS has 14 wires like the new one.
  14. S

    NEED BMS FOR MY BATTERY (DOWN TUBE- HAILONG BATTERY CASE)

    Hello ebikers The BMS of my battery pack is defective and need to be replaced. I own a 48volt (11.6ah ) battery pack made with Panasonic NCR18650PF, I use my pack on a 1000 Watts e-bike motor with a 30 amp controller that output 1000w constantly. After testing my pack I determined the BMS was...
  15. S

    NEED HELP FIDING SPOKE FOR MY EBIKE WHEEL

    One of the spoke nipples of my electric bicycle broke when I was truing my e-bike wheel. I bought the wheel on eBay here: http://www.ebay.com/itm/48V-Ebike-Cycling-Electric-Bicycle-Motor-26-Conversion-hub-Kit-Front-Wheel-1000W-/252505532057?hash=item3aca80a699:g:CUQAAOSwNRdX2PLf Can you please...
  16. S

    PEDAL ASSIST ISSUE WITH SINEWAVE CONTROLLER

    Problem solved. The new controller pedal assist wires were mismatched with my pedal assist. The new controller is not compatible with 12 magnet
  17. S

    PEDAL ASSIST ISSUE WITH SINEWAVE CONTROLLER

    My e-bike has been giving some issue lately. I lately had a car accident during which my e-bike was damaged; I purchased a new e-bike conversion kit and mountain bicycle. I also purchased a KT3 LCD and sine wave controller due to my injuries I am not pedaling and have been using the throttle. I...
  18. S

    Ebike Hub 3 phase wire melting issue

    I am having a recurring issue, the 3 phase wire of my e-bike keep melting. I had them set up into a three wire block (see picture). I own a dual voltage e-bike 36v/48v e-bike (KT3 e-bike LCD) and my controller (KT36v/48v) is rated for 36v/48v 22 amp max current. As of now, I have a 36volt 11ah...
  19. S

    Pnasonic 18650 Vs Samsung 26F Vs 18650 China Cell

    I am considering buying a 48 volt battery pack to replace my 36 volt battery pack from the same seller on Aliexpress. I am upgrading my controller from 36 volt 22 amp to a dual volt controller 36 volt/ 48 volt 22amp; my ebike motor is compatible with both 36 volt and 48 volt. Can you please tell...
  20. S

    36 Volt VS 48Volt BATTERY PERFORMANCE

    I own an electric bicycle (Mountain bicycle I converted to an ebike). The conversion kit I purchased was advertised as 36 volt on eBay; I did some research and found out that the kit can be run at 48 volt. I bought a KT3 ebike LCD display and a KT 36V/48V controller (dual voltage controller...
  21. S

    Measuring Remaining energy in ebike LifePO4 battery

    I converted my mountain bicycle into an ebike. I use a 36 volt 12 ah LifePo4 battery with my bicycle, it has been working fine. I lately replaced the stock sw900 lcd display and controller that came with my conversion with a KT LCD3 and a 36 volt KT controller, they work wonderfully. The KT LCD3...
  22. S

    How to Waterproof bottle Ebike Lipo Battery?

    I own an electric bicycle that I used as my daily drive. I have a bottle aluminum 36v 10ah battery that I would like to waterproof, I sometime have to ride under the rain. I would appreciate any concrete suggestion you may offer. Please be detail by providing link or video (if possible) on how...
  23. S

    NEED HELP REPLACING LIFEPO4 BMS

    I purchased a 36v 12 ah LifePO4h battery pack from Ebay a while ago. The battery charge fine but won't send charge to my ebike. My ebike has a KT36ZWSRL_ZC14ZL(36Volt- 26 Amp). I opened the pack and found out that the BMS circuit burn (see picture). I would like to buy a new bms for my battery...
  24. S

    NEED HELP FIXING MY EBIKE

    Thank the battery is the problem. I used a multimeter to check the amperage and there s nothing until I connect the charger
  25. S

    NEED HELP FIXING MY EBIKE

    I own a ebike (see picture), I converted my mountain bike into an ebike it has been working fine for a while until I was riding I saw on the LCD display SW900 of my ebike error 06 according to user manual this mean battery undervolted. I own a 36 volt 12 ah lifepo4 battery, I assumed the BMS...
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