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If a 6 cell nimh loses it's punch or can't sustain current to move my E-savage at...

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    If a 6 cell nimh loses it's punch or can't sustain current to move my E-savage at...

    7.55V, does that mean that my batteries are dying? They are stock 3300mah nimh batteries.

    My setup is a 12cell stock nimh + mamba max + Feigao 3511KV brushless motor.

    Any insight?
    Modded Esavage + 4S lipo + KB45 2300KV + HW150A
    Brushless Esky Lama with dual swash
    Esky Dauphin
    Walkera Lama 2
    Walkera 5G6
    Sparrowhawk XB + 2S lipo + 60A brushless esc + 6000kv motor.
    Brushless Mini LST + single servo mod
    Brushless Micro-T

    #2
    Originally posted by LittleGiant
    7.55V, does that mean that my batteries are dying? They are stock 3300mah nimh batteries.

    My setup is a 12cell stock nimh + mamba max + Feigao 3511KV brushless motor.

    Any insight?
    I may be wrong but I remember getting 12-13v on my fully charged Nimh SubCs, 6 cell.........GP3000 i think.....

    Comment


      #3
      Originally posted by Lerlo
      I may be wrong but I remember getting 12-13v on my fully charged Nimh SubCs, 6 cell.........GP3000 i think.....

      How did u managed to charge your nimh over 2 volts per cell?

      I tot nimh cells can only peak at slightly over 1.4v per cell? Some brands do peak at over 1.5V(but that's the high voltage cells).

      I didn't check the battery voltage under load. And I don't have a decent charger that can count the capacity of the batteries. But I seriously think that my batteries are dying. Kinda sad now..... haiz. The runtime is getting shorter and shorter.
      Modded Esavage + 4S lipo + KB45 2300KV + HW150A
      Brushless Esky Lama with dual swash
      Esky Dauphin
      Walkera Lama 2
      Walkera 5G6
      Sparrowhawk XB + 2S lipo + 60A brushless esc + 6000kv motor.
      Brushless Mini LST + single servo mod
      Brushless Micro-T

      Comment


        #4
        Originally posted by LittleGiant
        How did u managed to charge your nimh over 2 volts per cell?

        I tot nimh cells can only peak at slightly over 1.4v per cell? Some brands do peak at over 1.5V(but that's the high voltage cells).

        I didn't check the battery voltage under load. And I don't have a decent charger that can count the capacity of the batteries. But I seriously think that my batteries are dying. Kinda sad now..... haiz. The runtime is getting shorter and shorter.
        Haha, I dunnoe leh, last time I had an EX14 and a Team Orion Charger and they all show 12-14v when fully charged, always wondered why.
        NiMH and Nicad Peak detection uses a voltage drop to determine the full capacity of the Battery.

        What im trying to say is this, your charger will charge and the voltage will increase, but when peak is reached, Voltage will drop a little, lets say 0.05V..then it will stop charging. For Nimh I think the peak detection should be 0.03V if I remember correctly.
        Anyway, poorly maintained or old bats will always give fake voltage drops along its charge so you gotta set peak detection higher to say 0.07v?
        Last time when I played car always had this problems, especially niCad.
        So for all you know your charger could be detecting peak when bat is not full yet?
        Try to get a Charger that can cycle Batteries, that normally helps.
        PS. Sometimes one battery in the whole pack can decide to die too, bringing down the voltage, experience that before too.

        Comment

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