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  1. #1

    Join Date
    Mar 2007
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    2S 7.4v LiPo OK For RX and Digital Servos?

    Hi Bax,
    Is it OK to use a 2S 7.4v LiPo battery for the receiver and digital servos (not the High Voltage servos)? Is it necessary to use a voltage regulator for this?
    Regards
    JC

    I don't always fly R/C...but when I do I fly FASST. Fly well my friends.
    Regards
    JC

  2. #2
    Moderator
    Join Date
    Apr 2002
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    Champaign, IL
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    RE: 2S 7.4v LiPo OK For RX and Digital Servos?

    Check the servo's specs. If the servo is OK for 6V, then a 2S Lithium battery pack won't hurt it.
    Bill Baxter, Manager Hobby Services/Futaba Service/North America
    3002 N. Apollo Dr. Ste. 1 Champaign, IL 61822 USA
    Service Phone: 217 398-0007
    Email: hobbyservices@hobbico.com

  3. #3

    Join Date
    Aug 2008
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    Athens, GREECE
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    RE: 2S 7.4v LiPo OK For RX and Digital Servos?

    I would like to make a comment here. When a servo is specified for 6 volts nominal power supply (5 cells NIMH or NiCad) the only type of lithium based chemistry batteries that may be used, without a regulator, is 2S LiFePO battery with a voltage range similar to a 5 Cells NIMH battery pack.
    A 2S LiPO battery has 7.4 volts nominal voltage (higher than maximun voltage of a fresh-charged 5 cells NIMH) peaking at 8.4 volts when fresh-charged. That means if somone uses 2S LiPO without a regulator to power supply a non HV servo, the servo is going to get fried very soon. Only HV servos may be power supplied with a 2S LiPO.


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