Power in Flux
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Thread: How about adding a capacitor in parallel to my current battery pack to boost power ?

              
   
   
  1. #31
    Senior Member Athlon's Avatar
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    BTW , I forgot the most important thing to add if you want strong accelerations.



    ADD LIGHTNESS





    .

  2. #32
    Senior Member harlan's Avatar
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    If anybody is interested in experimenting with ultracaps, I have five 16.2V 25F caps I'd be willing to let go cheap.

    Here's a link to the product page:
    http://www.tecategroup.com/store/ind...oducts_id=1225

    They cost me $125 each. I'll take $350 for all five.

  3. #33
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    Quote Originally Posted by harlan View Post
    If anybody is interested in experimenting with ultracaps, I have five 16.2V 25F caps I'd be willing to let go cheap.

    Here's a link to the product page:
    http://www.tecategroup.com/store/ind...oducts_id=1225

    They cost me $125 each. I'll take $350 for all five.
    Do you still have them?
    Or is anybody who bought them using them for some interesting tests? :-)

  4. #34
    Senior Member harlan's Avatar
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    Re: How about adding a capacitor in parallel to my current battery pack to boost

    I still have them

    Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

  5. #35
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    Quote Originally Posted by harlan View Post
    I still have them

    Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
    Can you please check how much it costs to send to italy?
    You can contact me at jumpjack ar libero dot it

  6. #36
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    COuld you put them on Ebay for a better transaction?

  7. #37
    Senior Member harlan's Avatar
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    Quote Originally Posted by jumpjack View Post
    COuld you put them on Ebay for a better transaction?
    If you are interested in purchasing them, feel free to email me harlan at hollywoodelectrics.com. I'd rather avoid ebay fees. I can take a credit card over the phone.

  8. #38
    Member PaulWay's Avatar
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    Hi all,

    I've been wondering about adding a bank of 250V 1uF electrolytic capacitors to my battery input leads on my bike - I'm using an older 120V Kelly controller and have been having problems with it just stopping working when the battery current draw is set to more than about 70%. This wouldn't be for supplying long-term current draw, it would be about smoothing out the microsecond power draw on the battery and keeping the overall voltage high at the microsecond level.

    Now, I admit I'm just guessing here - I haven't tried measuring this with an oscilloscope or data logger. I really want to, so I can get a better idea of what the conditions are around the time that the controller decides to reset, so that I can get the bike working with the motor controller as is. I'd rather not buy a new controller and have no idea whether it's actually going to fix the problem.

    Does this kind of application of capacitors make sense?

    Thanks in advance,

    Paul

  9. #39
    Ghost Rider Allen_okc's Avatar
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    it just pisses me off that the industries havent come up with better solutions with a realistic price for EV's that the working folks could afford - to have to seek alternatives likes this is crazy, especially when they have the technology to do better... someone throw us bone will ya
    The Greatest thing about a EV, is the Song of the Terrain...

  10. #40
    Member PaulWay's Avatar
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    I think they're working on as fast as they can There's massive quantities of R&D money being thrown at battery and ultracapacitor research. The problem is that it just takes time to filter down to us.

    Consider that ten years ago, lithium-ion rechargeable batteries were scarce, tiny things used in mobile phones and cameras and specialised equipment. As a private EV builder, getting your hands on them was impossible. NiMH had been locked down by patents, lead acid was just too heavy... and yet people were still attempting it.

    In just the three years since I started looking into building an EV, batteries have come a long way, capacities have doubled, and cells which were rumoured and semi-mythical are now easily available (e.g. pouch cells).

    We're getting there

    Have fun,

    Paul

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