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  1. E

    Really Dumb Question

    Hello All, on my DIY project have all components and donor frame assembled. QS Motor QS273 72v 5kw hub Sabvoton 72150 controller 20S12P 72V Panasonic 32BD 38.5ah with 100A BMS Everything connected except the battery to the controller Do I just connect battery and start programming? Do I need...
  2. E

    How many amps for BMS?

    I have a QS 273 5000W hub kit coming tomorrow. The controller is a sabotvon 72150 reportedly 50A continuous and 150A peak. I'm having a battery built at 72V 40ah with the LG MJ1 cells. (Unless they are crap - please feel free to comment). The builder 'Unit Pack Power' is open to changes but...
  3. E

    Battery match for QS 273 5kw

    Have a 19" hub kit ordered and being delivered. It is reportedly the QS 273 5kw matched for 72V Sabvoton 72150 controller. The supplier suggests a minimum 26.1ah battery to have a max of 100km/h (occasionally, but not likely often) and no idea of range. There are packs all over ebay and...
  4. E

    combo platter

    First my apologies for the question but the more I read the more confused I become: with voltage options from 36 to 48 to 72 ( I know there are more) and wattage from 350W to 5kw (I know there are more the question become how to mix and match. I've seen 3000W and 5000W saying it "can " run at...
  5. E

    Build Options

    cross reference to my other post: Bought this: Striped it down for now to this: Wheels are 17" so similar choices are limited to QS, NBpower, and UUMotor. NB offers a nice kit at 3000W and 5000W. they can be had at 48v, 60v, and 72v at 300lbs for me and the current frame (probably less, the...
  6. E

    EV Global upgrade

    So..... I bought one of the 24V bikes more for the look with the idea of building it out/up. I am a novice tinkerer and was thinking about the 48V 1,500 W Rear Hub. I was told the old Heinzmann was fine and the controller was shot. I suppose I could find a generic 36V controller and skip the...
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