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  1. D

    file request: QS motor, 205 V3 T5 for Sevcon gen4

    Hello, I want to start with a new EV build again, as my son wants to have a Ebike. We have a nice bike that we want to convert. Im in the market for a QS motor for 48 volts, version 3 style T5, 3 kilowatts. A good friend of mine knows his way around with sevcon, and has a nice controller for me...
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    Hubmotor-on-fire question...

    Hello, A year ago, my electric scooter with 8Kw 13" hubmotor cought fire during the night while charging. To make a long story short: all is lost, exept the hubmotor. Now i found the courage to test it, and the windings seem to be o.k. The halls act really erratic, couldn't explain it... So, i...
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    VX-2 speed adjust setting/code

    Hello, There seem to bee settings that can alter the max. speed setting of the Vectrix VX-2. Is there anyone that can tell me how to adjust this top speed? Word goes around that the lithium VX-2 has a top speed of 10KM/h higher than lead, 80KM/h i'd really like to know how to alter these...
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    Elcon // tcch charger question

    Hello, There's a lot of questions regarding the charging curve settings of a elcon charger. Now, there's stated that one needs to re-send the charger to Elcon in order to have it re-programmed. Now, i was searching to a good souce, when i stumbled on a document that said thefollowing; Choice...
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    Winson voltage TCCH Elcon vectrix question

    Hello, (Confusing title, isn't it? 8) ) I have a Vectrix VX-2 equipped with 16x Winston 90Ah cells. My intention was to put 100Ah in it, but the person that sold me these, ordered 90Ah (don't ask...) Now, first place i want my battery space filled to the max, for maximum range and electric...
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    Elcon / tccharger advise pls.

    Hello, I have a setup with 16pcs. of 90Ah Winston cells. I intend to use the Foundingpower EBS.BMS with a bleeding balance current of 200mA. Now, i figure the BMS does the controlling of the charge, so i want to buy a 1500W or 2000W Elcon charger in order to fill the pack. Now, i need to specify...
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    Behavior question regarding 90Ah Winston cells

    Hello, Recently i put 16Pcs. of Winston Cells in my electric scooter. Free float voltage just after charging is 57 volts, which drops almost immediately to 52-53 volts when i turn on my lights. When i pull the throttle, voltage drops to 48 volts, which is normal according to specs. (3v/cell...
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    Sinopoly, or winston?

    Hello, For my electric moped, i want to buy new batteries. I am stuck between the Sinopoly 60Ah, and the Winston 60Ah battery's,,, Sinopoly has a smaller volume per energy, but Winston can deliver more Amps and is better suited in cold weather. Sinopoly: 0.3C vs Winston 0.5C nominal discharge...
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    discharge question regarding winston/sinopoly, etc.

    Hello, I have a electric moped, with an 8Kw 13" hubmotor in it. This is connected with a 72V kelly 300Amp controller. Now, i need to get me some decent battery's, but space is limited. After a bad expirience with A123 pouch cells from victpower, i need some reliable info. Since space is a...
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    headway-like cells: where to buy?

    Hi, few day's ago i saw some cells that looked awfully like headway cells. They were equipped not with thread, but had studs on them instead. Anyone got any info about these? Are they interesting price wise? As i recall, Ypedal wrote something about cells that really look like these, but they...
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    repairing A123 victpower package, anyone?

    Hello, I have a 16S2P victpower battery that i bought from a friend that imports these. A few days ago, i discovered a significant decrease in range of my electric moped scooter. When i eventually opened the package, several cells were puffed. Some were t least 3 times increased in thickness...
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    advice needed charging and testing cells

    Hello, I have 2 Victpower battery packs here of 48 volts, 40Ah (32 cells) Also busy with other cells and packs (18650's) So, i need to get me a good battery charger, but a good battery discharger as well. I'm thinking about a good Hyperion, but they all seem to discharge "just" 40 watts max...
  13. D

    Good reliable source for A123 pouch cells?

    Hello, I want to make me a good pack of reliable cells. I also do read a lot about bad cells, scammers, Mr. Devries, Sangesf, etcetera.. Can anyone give me a good and decent adress proven reliable, safe, and providing good cells? Thanks!.
  14. D

    Konion 18650 help needed.

    Hello, I made a large pack from my brandnew konions, and charged them as a pack. Unfortunately some were not full, and were drawn emty. So, i have a 24S pack where 9S is reduced to zero volts... Are there any "best way's" in how to revive them? I already disassembled my pack. It's 14P, so in...
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    Battery BMS question: Headway and 18650 exchangability

    Hello, I own a electric moped scooter, which i upgraded a bit. Kelly controller, 8Kw hubmotor, and so on. I drove a few days with a Headway package of 24S2P, making 76.8 volts. Now, i have a real bunch of 18650 cells, brandnew, from makita packs. Yesterday, i made a large pack of it, making...
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    A123 lipo battery range in chinese scooter?

    Hello, From a friend of mine, i boucht one 48V/40Ah pach with bms and 10A charger. He gets them from a supplyer in china. Now, i put such a pack in mu wife's scooter. Today we drove a while. It was cold (8 deg. Celcius), windy, a bit wet, and light was on. It is a typical chinese electric...
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    Motor with 2x 5 wires. Dual set of halls?

    Hello, Ik have a new 8Kw chinese 13" hub motor. There are the natural 3 fat power wires, but there are also 2 connectors with each having 5 wires. What are these wires? I assume at least there are 2 sets of halls, but only one have the 3 corresponding colors with the fat wires and a black/red...
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    volumetric value power off lipo?

    Hello, I'm trying to calculate how much energy i can put in my electric scooter. Is there a " easy" way? I would like to know if there is a volumetric value of a lipo cell versus watts it can deliver. For instance: 1000 watts for each liter of volume. Then i estimate as an example that a cell...
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    Wich controller supports a pedelec or PAS sensor?

    For my build i need a controller thats compatable with a pedelec sensor. I want the pedelec be a must in order to activate the electric assist. I want to install the hand or thumb throttle to set the desired speed. Better may be the support for a torque sensor, so i can ditch the throttle, and...
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    some details about my scooter brushless motor?

    Hello, Ik became enthousiastic about the thread about switching a brushless motor from wye into delta. Now, i have a scooter with a 48 volts 1500 watt moor, and want to increase the speed. I already installed a Kelly KBL48201 controller, wich gave me much more torque. Now, i want to know if i...
  21. D

    series or parallel

    Hello, i might be able to aquire some 18650V cells soon. Now, i wonder: when building a pack, what's advisable? Put cells in parallel first, and then these cells in series, or is it better to go in series first, and then make parallel sets out of them? thnx.
  22. D

    Need some help/advice about electric support

    Hello, I'm lurking the forum now for a while, mainly about electric scooters, controllers, etcetera. Now, a few weeks ago, i electrified my kid's Trike. This is a large trike with 7 gears, and all kinds of optional accesoires to be able to ride it with more kids, transport sand etcetera. I took...
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    used LiFePo prismatic: what do i check?

    Hello, I can buy 16 used LiFePo prismatic cells with bms and charger for a reasonable price. Now my biggest question is, on how to check if they are okay? How could i check abuse or cycles? any info welcome, thanks.
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