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  1. M

    Component Identity Bestech D575-26S-LiFePO4 BMS

    Hi I wonder if anyone can identify the 2 following components marked with the following: 3Q66 and 13DG1 TIA
  2. M

    BMS/CA (Cycle Analyst)

    Is it okay to run my bike with out a BMS and rely on the CA & controller to control the LVC and Max amps? I would obviously use the BMS to charge the battery. Thanks Mark
  3. M

    Help Please, Bike cutting Out

    Hi All I have a new build and have been testing it and it keeps cutting out. The setup is as follows: Motor: QS 205 H50 3T V3 Controller: 24 FET 4115 MOSFET 84-132V Mark III High Endurance LYEN Edition Controller BMS: Battery: A123 prismatic pouch 20ah, 26s =85.8V (not sure on C rating...
  4. M

    Bike Juddering When Applying Throttle

    Hi all, I was giving my bike some beans through a load of stones on the beach and then I had the failure where the bike judders when I apply the throttle. I have cancelled out the controller and the battery as I have spares and it is still the same. On stripping the motor down I have found...
  5. M

    Advice For 18s A123 With Founding Power BMS

    Hi, After 8 months of trouble free and great fun on my downhill bike with only a 48v 15ah 2C battery I plan to upgrade my battery's over the winter, Parts for upgrade are: 1. Agniusm 18s A123 Battery Pack Kit 2. 24 x A123 packs from ONS Power (6 spare) 3. Founding Power BMS (LY.UCS-BMS...
  6. M

    Cycle Analyst (CA) Question?

    Hi I and just trying to set up my controller and CA and have a few questions: 1. If I set values through th CA is this setting those values into the controller which is a Lyen 6 FET mini monster? 2. I am in no way electrically minded and trying to understand what settings I should be putting...
  7. M

    New Build Advice Please!!!!!

    Hi all this is my first post and I am from the UK, I’m looking to build an electric bike from scratch other than I have a 48V 15ah battery with its BMS already, so my shopping list contains the following 3 items: 1. Electric Hub 2. Controller 3. Donor Bike I will mainly be using this bike...
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