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Thread: Lithium cell tests

  1. #191

  2. #192
    is it true that with these batterys you cant stay in after a fight for another one?

    my dad said something like it but hes prob trying to get me not to buy any lol

    when robot wars is back on tv ill def get some

    but at shows i like to just stay in fights if i can fight in the next fight??

  3. #193
    as with any batterries it depends on the capacity of your pack.

  4. #194
    thats if its still working LJ

    normaly now days its stops mind you the sidwinder has done 7 events now a record
    just gotto sort flipper out and marios sorted that bit

  5. #195
    Ok,

    I have a question, and i wonder if someone can answer it if they know.

    I run 2 x 24v Nicads in Ripper.
    If i Swap to These new batteries what will i gain?

    How much will they cost?
    How much are the chargers / balancers going to cost?
    I believe my voltage will go up to 30v, correct ?
    What will be my weight saving?
    will I need more space?

    I am starting to think about the Uk champs and getting my hardox armour on ripper, but it means a drastic diet to get it in weight, thats why i am asking.

    I know that we havent got any thing finalised, but if someone knows approx values so i know.


    John

  6. #196

  7. #197
    2 bosch 750, 10.5:1 ratio, roboteQ

    Replacing 2 x 24v 3amp nicads

    JOhn

  8. #198
    I normally calcualte the A123 as 3.3V 2Ah (even though they are a bit more). They weigh 70 grams each cell.

    so 24V/3.3V = 7.2 cells, so 8 cells would do 26.4V nominal, 28.8V peak (3.6V per cell).

    8*70 grams=560 grams, with shrinkwrap and balancing leads and 4mm2 wire say 650 grams.

    3 of these packs will easily get you through a fight, so 650 * 3 = 1950 grams or 2 kg.

    With 8 cells you have the advantage that you can use the cheap unitedhobby charger with integrated balancer.

  9. #199

  10. #200
    how much does a 24v nicad pack weigh?

    Thanks for the info.

    John

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