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Fusion 50 LiFePO recommendation...

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  • #1

    Fusion 50 LiFePO recommendation...

    I've got a trio of LiFePO4's (which i've for now put up for sale) since i maidened the Fusion today and a 4ish minute flight was pulling almost 50% out of the 2100mah lifepo pack.

    I was hoping for more like 2 - 3 flights per pack (say around a 500mah draw per flight) but clearly not.

    Running vbar w/ sats, 3x MKS 980's on cyclic and 950 on tail (non-hv) ....

    So what mah pack do i need realistically for the fusion?
    Gaui X4 II VBar - Trex 500 efl Pro VBar
    Spektrum DX9
    Proud Member of Phoenix Rotors heli club
    My Helifleet
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  • #2
    I'm using a zippy 2x1100mah on mine and get a good 8 flights out of that.
    Running bls451
    254
    TotoalG
    Oxy4+, tgy servos, hw60a, spirit fbl on 6s 🤓


    sigpic - Team pilot

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    • #3
      Something is not right if you are pulling that much in one flight. Is that measured on a meter, or the amount put back in a charge? Li-Fe cells are not good for checking on battery monitors.
      Cheers,
      Simon
      --------------------------------------------
      Trex 700N & E
      Futaba 18mz and some planks !!

      x 2

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      • #4
        Yeah ... think i found that out

        Just recharged the pack that read 56% following flight and i've only put back 314mah into it
        The 3 packs are all reading different on the meter (between 86%- 97% when full) so dunno ... might be just a terrible meter ... just nervous if i don't have a reliable means to check packs how do you tell when they're below safe charge levels?
        Gaui X4 II VBar - Trex 500 efl Pro VBar
        Spektrum DX9
        Proud Member of Phoenix Rotors heli club
        My Helifleet

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        • #5
          Battery checkers are no good with these cells. The only reliable method is to monitor how much you are putting back in. I have a 2100mah in my 600efl and I'm happy with 3 flights. Could probably get more, but I never tried. I have a 3000mah pack on my 700, and it will easily do 4 flights with a lot of capacity to spare.

          Most of my flights take about 300-400 mah out of the pack, so I think your set up sounds spot on.
          Cheers,
          Simon
          --------------------------------------------
          Trex 700N & E
          Futaba 18mz and some planks !!

          x 2

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          • #6
            My batts read about 85% even fully charged !
            Do a flight and see how much gos back in, then take 30% off the total pack mah So that leaves you with about 1470mah to play with
            Oxy4+, tgy servos, hw60a, spirit fbl on 6s 🤓


            sigpic - Team pilot

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            • #7
              Thanks everyone.... put my mind at rest that i've not bought useless packs
              Gaui X4 II VBar - Trex 500 efl Pro VBar
              Spektrum DX9
              Proud Member of Phoenix Rotors heli club
              My Helifleet

              Comment

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