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  1. #1

    Join Date
    May 2011
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    field charging lipos

    Hi all, I want to be able to charge my Lipo batteries at our field. We have no power there. 12v or 24v deep cycle batteries are what I want to use. I don’t want a genset, tough. I have a 730i Hyperion charger.



    What works? And, how do you figure out how many batteries can be safely charged from a deep cycle battery?>>



  2. #2

    Join Date
    Jul 2007
    Warner Robins, GA

    RE: field charging lipos

    The PB battery has a watt hour rating. That is the basic limiting factor. The deep cycle battery just means that you can discharge it a bit further than a conventional automotive battery.
    The charger comes into play because it may be able to charge a LiPo battery to a higher voltage than the power source battery. My chargers can do this, and use standard automotive electrical systems as a power source. (~13-14 Vdc) in, and about 22vdc out (6 Lipo cell packs) to be charged.
    Lets say that I have a 5000mah lipo to charge. It should not be completely discharged, so I'd guess 3000-4000mah as the needed charge.
    Then there is some loss in the charger, and if a balance charge is done. So, I'd go back to 5000mah as more or less the maximum expected
    energy needed from the power source battery. A small lawn tractor battery might be a 24AH battery, and I'd expect to get about four or so charges
    before it needs charging.

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