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Electronics Li-Po battery pack charging

Discussion in 'Modding' started by LuitvD, 20 Dec 2006.

  1. LuitvD

    LuitvD What's a Dremel?

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    I've seen many questions about charging Ni-MH and Li-Ion batteries, but I recently bought a Li-Po battery pack, and I wondered how I should charge it... What voltage I should use, the maximum charge current... I don't want to ruin a perfectly good battery :p

    about the Li-Po pack:
    Voltage: 7,4V
    Capacity: 2,2Ah
    Maximum discharge current: 10C/22A (continuous), 15C/33A (peak)

    I think the cells can be charged separately, there is an extra 3-pin connector, and I can't think of any other use... :D

    but what voltages, and charge currents... :wallbash:
     
  2. ConKbot of Doom

    ConKbot of Doom What's a Dremel?

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    lithium Ion is actually easier to charge then ni-mh, it just is a lot more dangerous when done incorrectly :p

    it is typically done with a constant current-constant voltage charge. Constant current (.5C I believe, I would double check that, and all of this, I'm bringing it back from memory), and then once it reaches a certain voltage, it switches to constant voltage... once the current drops to a certain level, charging is complete.
     
  3. LuitvD

    LuitvD What's a Dremel?

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    that's lithium-ion.. is that any different from lithium-polymer? (and a constant-current of 0,5C is not much... would take 2 hours to charge completely then right?)
     
  4. ConKbot of Doom

    ConKbot of Doom What's a Dremel?

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    well a quick google and I found this...
    http://www.powerstream.com/li.htm

    :thumb:

    and yes, ideally, at .5C it would take 2 hours to charge... but allowing for the constant voltage portion of the charge takes time, also.
     
  5. LuitvD

    LuitvD What's a Dremel?

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    cheers, this really helped :)

    (should have googled some more I guess...)
     
  6. deiol

    deiol What's a Dremel?

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  7. LuitvD

    LuitvD What's a Dremel?

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    wow, that looks nice :)

    cheers, sampling that product :D
     

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