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  1. #1

    Join Date
    Feb 2011
    Location
    , NY
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    Batteries and Chargers

    Last time I was in the hobby was 1991. I recently sold all my old stuff, and would like to get new. I'm leaning towards the Duratrax Evader EXT2 to get started.

    My question is with batteries and chargers. Last I remember, we only had 1200mah Ni-Cds and 15 minute timer charges. I don't want to spend a lot, so plan on buying a ni-mh battery. I'm thinking of going with an Onyx 7 cell 3000mah, 6 cell is same price but less performance. What do you guys think?

    As for chargers, is there a way to determine charging times? I see most of the lower end charges from Tower are in the 2-4amp range. How long would it take to charge a 7 cell 3000mah battery at 2, 3, or 4 amps? Does it take longer to charge a 7 cell battery over a 6 cell battery with the same mah capacity?

    Also, how much run time should I expect with a 3000mah battery?




  2. #2

    Join Date
    Mar 2003
    Location
    LaGrange, OH
    Posts
    14,856

    RE: Batteries and Chargers

    I've always figured that if one was buying a charger and batt then going lipo was the best idea. The 7 cell 3000 is ok too. For charger currents it can be thought of like this:
    2 amps = 2 ah (per hr)
    3 amps = 3 ah (per hr)
    4 amps = 4 ah (per hr) or (2 ah pre half hr) Twice as fast as 2 amps.

    At the same current , the voltage of the pack is irrelavent. With some chargers you are interested in the current will be less on 7 cells than 6 cells thus making it slower..

    and airplanes were in


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