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  1. S

    85v cut off for 74v 21700x20 battery pack?

    Found this (attachment), so it seems that every cell can be charged up to 4.3v, that gives 86v for 20 series pack, although drastically decrease battery lifespan.
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    85v cut off for 74v 21700x20 battery pack?

    Hello, There is a pre-set 85v overcharge cut off limit on BMS for 20x pack of 21700 74v batteries, although I have read that maximum charge of 74v batteries should be 84v, not 85v. Should I leave the setting as is, on 85v, or it would be safer to reduce it by 1v to 84v? Thank you
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    Votol EM-100 & EM-150 controllers

    HDC works automatically when you go downhill, no need for any switches or buttons, when you go down the hill and you within a certain range speed motor slows down when it about to exceed that set speed range. I am riding on the street, so this function is actually helpful and does not affect...
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    Votol EM-100 & EM-150 controllers

    Anyone, please :cry:
  5. S

    Votol EM-100 & EM-150 controllers

    Hello everyone, I have got myself a QS motor and Votol controller and have a couple of questions regarding their configuration. Firstly my specs: Battery: 48v 45aH (supports continuous delivery of 50a) Motor: QS-Motor 1200W 48v magnets height - 27H; 28 magnet pairs Controller: Votol EM-50s -...
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    48v Battery with 60v e-motor.

    Hello there! I have 48v40Ah battery and Votol EM50s controller. Recently I have got a new e-motor, but apparently it is labeled as 60v1500w. Would it still be possible to use with my 48v40Ah battery? If it is possible, what kind of downsides I may experience? Thank you everyone for your kind...
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    Choosing rear shock absorbers for e-moped/e-scooter

    Hello everyone, I need a little advice regarding rear suspension length selection for my e-scooter (Niu U1). E-scooter net weight: 56 kg E-scooter wheel size: 16X3.0 My weight: 80 kg (sometimes I ride with my wife, who is about 45 kg) Front shock absorber length (I have changed original fork...
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    Xiaoniu U1 Pro Magnetic motor indetification.

    Hello, I'm seeking for help in identification of magnetic motor specs for Xiaoniu U1 Pro. It is Bosh engine with serial number: RBNGFBH185130053 There is another data: TWICF120°eM （not sure what it means either) Any help would be much appreciated.
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    VOTOL EM-30S/Xiaoniu U1 Pro E-Scooter optimal controller settings/battery issue

    Considering that my hardware specs for battery and engine won't change, what would be the best settings for the controller throttle/battery longevity wise? Engine: 800W Battery: 48V40.3AH (54.6V max. charging voltage, 39V min. charge voltage, 45 A max. discharging current, 12 A max. charging...
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    VOTOL EM-30S/Xiaoniu U1 Pro E-Scooter optimal controller settings/battery issue

    Yeah, that is what I did, their explanation was that: "Battery cells are degrading over time, so you need fully discharge and charge again back to 100% once in a month to get more or less accurate distance estimation and charge/discharge estimation on one charge on your e-bike display". So it...
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    VOTOL EM-30S/Xiaoniu U1 Pro E-Scooter optimal controller settings/battery issue

    Man, really appreciated your time and reply (why I haven't found the forum earlier...)! I think what adds to the problem I have is that it is recommended to fully deplete battery charge once in a month and charge back to 100%, but I didn't do it each month, and charged the battery each time...
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    VOTOL EM-30S/Xiaoniu U1 Pro E-Scooter optimal controller settings/battery issue

    Thanks a lot for such detailed explanation! Really appreciated! Unfortunately for me, I do not have all the technological knowledge to use voltmeter and if I would have the battery is sealed by the original 3rd party seller, so I think the only way for me is to return it for checking and...
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    VOTOL EM-30S/Xiaoniu U1 Pro E-Scooter optimal controller settings/battery issue

    Hello everyone, I have Xiaoniu U1 Pro e-scooter and I have replaced original controller with VOTOL EM-30S. Currently my hardware set up as follows: Engine: 800W Battery: 48V40.3AH (54.6V max. charging voltage, 39V min. charge voltage, 45 A max. discharging current, 12 A max. charging...
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