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  1. #1
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    Charging question

    Is it possible to charge two lipos or two traxxas power packs at the same time with the onyx 230 charger? Thanks for your help
    keep your mouth closed and let your eyes listen

  2. #2
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    Not lipo, buy MAYBE 2 NiMH if they are in parallel.

    Please correct me if I am wrong.
    HPI Savage LOSI Mini/MicroT, MRC Traxxas Revo VXL

  3. #3
    RC Turnbuckle Jr.
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    Quote Originally Posted by H towns finest
    Is it possible to charge two lipos or two traxxas power packs at the same time with the onyx 230 charger? Thanks for your help
    Lipo's you can but it's only a 50 watt charger so i wouldn't recommend it..
    Plus you would also need 2 blinky's.
    Keep flex'in those forum keyboard muscles.

  4. #4
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    Quote Originally Posted by got_nitro
    Lipo's you can but it's only a 50 watt charger so i wouldn't recommend it..
    Plus you would also need 2 blinky's.
    so I can charge dual traxxas packs?
    keep your mouth closed and let your eyes listen

  5. #5
    RC Turnbuckle Jr.
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    Quote Originally Posted by H towns finest
    so I can charge dual traxxas packs?
    I dont see why not..


    Also, as long as your lipos don't go more than 7000 mah combined you can charge them in parallel but ya need 2 blinky's..

    EDIT:: Example, if you have 2 2200 mah lipo packs, set the charger for 2's 4400 mah or 4.4 amps and charge them in parallel..
    Last edited by got_nitro; 07-13-2009 at 05:28 PM.
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  6. #6
    RC Turnbuckle Jr.
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    Quote Originally Posted by H towns finest
    so I can charge dual traxxas packs?
    With NiMh you have to make sure that one of the packs is not lower than the other in voltage. You could over charge a pack or a cell. Nimh packs do not have balancers..
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  7. #7
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    Oh, that makes sense.
    So if you charge 2 lipos together in parallel, couldn't you then balance them individually at different times using the same balancer. But I suppose if you want to be that patient, you might as well just charge them individually through the balancer.
    HPI Savage LOSI Mini/MicroT, MRC Traxxas Revo VXL

  8. #8
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    any other input from other members?
    keep your mouth closed and let your eyes listen

  9. #9
    RC Racer
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    please read below link on nimhs

    http://www.powerstream.com/NiMH.htm

    nimhs should be charged seperatly
    the onyx 230 can only charge 2 or 3 cell lipos so no charging of dual lipos
    you need a charger which will charge 6-8 cells and use a double balance board for say 2x 3 cell lipos = 6 cell and split the charge supply to both batteries

  10. #10
    RC Turnbuckle Jr.
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    Quote Originally Posted by tectic
    please read below link on nimhs

    http://www.powerstream.com/NiMH.htm

    nimhs should be charged seperatly
    the onyx 230 can only charge 2 or 3 cell lipos so no charging of dual lipos
    you need a charger which will charge 6-8 cells and use a double balance board for say 2x 3 cell lipos = 6 cell and split the charge supply to both batteries
    ^^ Exactly..
    Quote Originally Posted by got_nitro
    With NiMh you have to make sure that one of the packs is not lower than the other in voltage. You could over charge a pack or a cell. Nimh packs do not have balancers..

    This makes these cells and batteries difficult to charge in parallel. This is because you can't be sure that each cell or pack is the same impedance (or resistance), and so some will take more current than others even when they are full. This means that you need to use a separate charging circuit for each string in a parallel pack, or balance the current in some other way, for example by using resistors of such a resistance that it will dominate the current control.
    Keep flex'in those forum keyboard muscles.

  11. #11
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    well I guess ill have to charge 1 battery at a time=(
    keep your mouth closed and let your eyes listen

  12. #12
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    you can use two low cost nimh chargers off 1 power supply at the same time to charge 2 batteries

  13. #13
    RC Turnbuckle Jr. Carbonrevo33's Avatar
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    yea, i just discovered that i can charge 2NiMh packs at teh same time. Should be much better.

  14. #14
    RC Racer
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    What is a "blinky"?

  15. #15
    RC Turnbuckle Jr.
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    Quote Originally Posted by JatoTheRipper
    What is a "blinky"?
    A lipo balancer..

    http://www3.towerhobbies.com/cgi-bin...&I=LXMRZ9&P=ML
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