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  1. S

    how to program a sevcon gen4

    Guys can you help me with configuring the sevcon gen 4 80V size 6 to AD AC24LS motor, i'm new with these inverters and my knowing is very limited, i manage to spin the motor, but the parameters are mess, so pls help with configuring! I also have Sevcon SCWiz which is a auto-tune wizzard for...
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    Homemade Battery Packs

    My first thought was to sort all type of batteries, then i will need 21 batteries of each type for a serial pack(for example Panasonic 2200Mah x21 cells or sony E5 type again 21 cells) i couldn't collect that quantity of cells for each pack, then i start to make packs with close enough fabric...
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    Homemade Battery Packs

    Still making the terminals(pos and neg) for the whole battery, but before assembling i tested them one by one for 1C load, and all do it perfectly, not to mention that most of them do 10-15A peak discharge(the good cells do 17-20A) without even hesitating! So i'm pretty shure what i'm doing, the...
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    Homemade Battery Packs

    Tesla made 18650 cells with water cooling, so they can handle 300KW peak, from 8k 18650 cells! Mine are just air-cooled 714 cells, so they will be controller limited to 1-2C charge/discharge, ffs your laptop eats about 80W under full load from 6 cells which is 2C minimum and they don't overheat! 8)
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    Homemade Battery Packs

    Yes it is, but it needs proper BMS for longer life! :) It's TESLA style! :D
  6. S

    Homemade Battery Packs

    And how to re-shuffle a few cells without splitting the battery bank? Some pictures of the battery bank:
  7. S

    Homemade Battery Packs

    The battery bank is already assembled, all cells tested for bleeding voltage before assembling so the lowest capacity of some cells is about 1.6Ah(fabric capacity), highest is about 2.6Ah the max discharge rate for the entire pack will be no more than 1C(68Ah) Cont. and 2C(136Ah) controlled, and...
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    Homemade Battery Packs

    Hi guys, i'm new here and i want to ask something. Recently i've built Li-ion 3,6 and 3,7V battery pack for EV project. The battery is 21S34P(wich have bridges between every 1S of the all 34P cells). My balancer will be 4 of these modules: My asking is: did these balancers will do the job of...
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