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  1. L

    Permanently paralleling two Lifepo packs together

    Anybody??? What if I would tune POT in the charger to increase stop current value???
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    Permanently paralleling two Lifepo packs together

    So I have done it! Everything seems to be OK, although when I charging those two batteries together, charger does not switch green led on. Both batteries are fully charged (sitting on 58,2V) but charger is still running infinite time (no current is flowing). But if I split two packs and charge...
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    Increasing capacity by adding new cells

    You are right, it is not ideal solution. I need something very reliable and long lasting solution. I have another option to assemble fully independent 36V pack with lower capacity, maybe 10Ah (in order to get lower price) with its own BMS board. So I would have one 15Ah and one 10Ah pack. Then...
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    Increasing capacity by adding new cells

    Hello to all, I would like to ask you experienced guys about solution for my tricky situation. I will be moving soon and my distance from home to work will increase to 40km, which is too far for my 36V/15ah LiFePo pack. I need increase capacity of my pack but my budget is currently very...
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    Permanently paralleling two Lifepo packs together

    Would it be OK, if I would parallel discharge leads (only) when discharging and then parallel charge leads (only) when charging?
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    Permanently paralleling two Lifepo packs together

    Thanks very much for your ideas. I am not sure who is manufacturer of my lifepo packs. I purchased them from our local golden motor vendor, but I think it is not GM packs, because on official GM site, I could not find them. I will attach photo, so maybe you could help me to identify them. I do...
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    Permanently paralleling two Lifepo packs together

    Hello everyone, I would like to ask you about possibility of paralleling two LiFePo packs. I have ordered two new 48V12Ah packs, so they should be exactly the same and new. Every pack has its own BMS with separate charge and discharge connection. I would like to put them in parallel in order...
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    Protecting of 16S LiFePo pack

    Thanks again for your ideas. This is how I will do it: I will buy that BMS system together with 2x 6s + 1x 4s JST-XH balance plugs and battery medic, which I will use it for occasionally checking single cells and BMS function and balance all cells if necessary. Celllog is great device, but big...
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    Protecting of 16S LiFePo pack

    Thanks for your advices. It seems that you would prefere option 1 and use regular BMS board right? This BMS is available at store in our local Czech vendor, so It shouldn't be problem to get it. This link to ev-power.eu was only for you, because it is english speaking website:-) So if I am...
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    Protecting of 16S LiFePo pack

    Hello to all, I have 16 15ah lifepo cells I bought in order to assembly 48V15Ah pack and I have problem to decide between two options of protecting and balancing cells. First option is to buy full BMS system for my pack...
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    ELECTRIC TRANSMISSION DELTA /WYE and SERIE/PAPALLEL stator

    I suppose you are talking about relays, contacts and coils within the motor right? There seems to be everything allright, because when I connected my second controller from other bike (also magic controller) it is working fine, although I didn't try it to ride outside, it was more like a bench...
  12. L

    ELECTRIC TRANSMISSION DELTA /WYE and SERIE/PAPALLEL stator

    I was aware that you can't go WOT in delta and then switch back to wye, it would certainly fry controller instantly. As I was saying I was riding like 10km/h when it happend. Is it possible that this was only coincidence not related to delta x wye switching or regen braking? I was thinking...
  13. L

    ELECTRIC TRANSMISSION DELTA /WYE and SERIE/PAPALLEL stator

    Thanks very much for your reply. I do believe that fault was caused by switching from delta to wye during regen. Even it was during very low speed (about 10km/h), it seems that relays did not switch in exact same time. I will try this again without regen, because it is to easy to forgot release...
  14. L

    ELECTRIC TRANSMISSION DELTA /WYE and SERIE/PAPALLEL stator

    Hello to all, I was reading this thread very long time and finally I decided to do delta x wye mod as well. But I have a problem, I do not know if that was coincidence or I did something wrong, but after short ride, when everything works fine I switched from delta back to wye during regen in...
  15. L

    Discovery Channel and Doc

    Thanks many times for uploaded video, quality is more than sufficient:-) Btw. absolutely awesome trike you have, Doc:-) Thanks again for video, cheers. Sent from my LG-P500 Using ForumTouch for Android
  16. L

    Discovery Channel and Doc

    Congratulations Doc:-) Is there any possibilities to see it on the internet (for example youtube)?. As I do not have discovery channel and I would love to see you in action Doc:-)
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    Speedict Ebike - Anybody seen/tried this?

    Hello, I would like to ask you where can I get speedict pc suite and latest firmware. I have been searching on your web page www.speedict.com and I did not find any download section or something like that. I searched on google and ES as well but no luck:-( I purchased your speedict device and...
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    Using RC quad charger to charge one 16S Lifepo pack

    I realize that, this is the reason I would like to have BMS with some more conservative voltage tresholds. Do you think it would destroy the cells if it is discharged to 2.0V or charged to 3,9V? According datasheet for those cells there is limit 2,7V - 3,8V as I stated above.
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    Using RC quad charger to charge one 16S Lifepo pack

    I would definitely like to have system with BMS and charge with higher rates by bulk charger. I could find some BMS over some company in the world which would send it to Czech Republic:-) To dnmun: On datasheet which is included with those 20Ah cells there is voltage treshold between 2,7V and...
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    Using RC quad charger to charge one 16S Lifepo pack

    Yes, that is LiFePo pack. Of course BMS would be great, but every bms I could find here (Czech Republic) is either very expensive or unusable for 20aH pack. Only affordable BMS I found for me would be this: http://www.ev-power.eu/SBM-CBM-1-1/Simple-Battery-Management-Board-16-cells-48V-60A.html...
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    Using RC quad charger to charge one 16S Lifepo pack

    Thanks very much for your revision of my connection diagram:-) Of course I know that balance wires and main power wires has separate ports in charger. I just draw it that way, because in this moment I still do not know what exact charger I will buy:-) Cell alarm will be connected only during...
  22. L

    Using RC quad charger to charge one 16S Lifepo pack

    Thanks for this information. I have a new thought about charging thanks to you. I rewired my diagram for charging and discharging (included) and as far as I can tell, this could work right???
  23. L

    Using RC quad charger to charge one 16S Lifepo pack

    Thank you very much to all for your advices. I can see that this way of charging woun't be ideal. In any case I don't mind to plug and unplug four harnesses, or two. Reason why I wanted to use quad charger is that I would have only one box instead of two separate charges (each for 8 cells). Of...
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    Using RC quad charger to charge one 16S Lifepo pack

    Hello to all, This is my first post to this forum although I have been long term reader and your advices was very helpful for me many times. I am planning my new ebike build and I would like to assemble my own battery pack consisting of 16 20Ah LiFePo4 cells. In order of make sure cells will...
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