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    1. #17
      Join Date
      Sep 2010
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      Lilydale
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      373

      Default

      Lower the resistance of the cells, higher the rate they can be charged at

      4.19v and charging at 2c works for me

      The higher the charge rate, the lower the resting voltage will be

      Most chargers terminate when cells are balanced and the current drops to a predetermined percentage of user inputted charge current (most are 1/20 or 1/10c and the good ones are adjustable)

      With a 1/10c termination

      5 amp charge rate - 0.5 amps when charge cycle terminates
      10 amp charge rate - 1 amp when the charge cycle terminates

      5 amp charged pack will have slightly higher resting voltage

      Cheers
      Last edited by crusey; 17-02-2012 at 09:21 PM.
      Scott Cruse
      Yarra Valley Chef
      Spektrum DX6i Mode 2
      Eflite Blade 400, 120SR, MSR

    2. #18
      Join Date
      Jan 2006
      Location
      Adelaide
      Club
      SARCH
      MAAA #
      39057
      Style
      Beginner
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      10,609

      Default

      Quote Originally Posted by TomC View Post
      So it seems we should all be charging our packs to 4.18v (~90%).

      Cheers,
      TomC
      4.18 is around 97% charged - so unlikely to cause much change in your flight time.
      TSA 700N Platinum | HZ-R 105 | HENSELEIT TDR | Scorpion 4525 Ultimate | OUTRAGE VELOCITY 90 | HZ-R 3D HZ-R 105 | TT AGUSTA RAPTOR 90 | VMAX | HZ | JR12X | Futaba 14SG

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    3. The Following User Says Thank You to Costas For This Useful Post:

      TomC (22-02-2012)

    4. #19
      Join Date
      May 2011
      Location
      Geelong
      Club
      MRCHC / GMAA
      MAAA #
      75850
      Style
      Stick Banging Maniac
      Posts
      1,232

      Default

      So could you set the icharger to lilo instead of lipo? I think it's lilo
      WWW.COMPASSHELI.COM.AU

    5. #20
      Join Date
      Sep 2010
      Location
      Lilydale
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      Beginner
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      373

      Default

      No reason to do that

      The Icharger range lets you set the lipo termination voltage (4.00 to 4.30) and the balance speed / termination current (1/5, 1/10 or 1/40c)

      Cheers
      Last edited by crusey; 17-02-2012 at 09:33 PM.
      Scott Cruse
      Yarra Valley Chef
      Spektrum DX6i Mode 2
      Eflite Blade 400, 120SR, MSR

    6. #21
      Join Date
      Jun 2007
      Location
      Perth WA
      Club
      WMHC
      Style
      Sport/Aerobatic
      Posts
      541

      Default

      Costas,

      You could be right about the charging rate of these modern Lipo's. I have test charged some smaller KongPower Lipo's at just under 15C, with no appreciable change in temp during charging and no noticeable change to the packs at the time. It would just naive to think that TP lipo's are any different.

      And you are certainly right about the ill effects of discharging below 3.3V, which can be about 3.6 at rest. The other one is leaving lipo's fully charged for extended periods of time.

      I can't wait to give these New KongPower 65C Lipo's a run in our demo Gaui X7,... should be a big smile generating combination !

      .

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