Understanding Battery Help

Discussion in 'General Electronics Chat' started by Casual_Engineer, Jun 14, 2014.

  1. Casual_Engineer

    Thread Starter New Member

    Jun 13, 2014
    11
    0
    I'm a little confused about some data about Lithuim ion batteries. For example, when reading this, it mentions that it's rated for 12.6aH but it's rated for 2C.

    Does this means that you can get 25.2a (2*12.6) out of this battery? Would there be a sigificant voltage drop if you're drawing that much current? Also, does that mean that if you're drawing 25.2a continuously then you're battery life will be cut in half (assuming 100% efficiency)?
     
  2. #12

    Expert

    Nov 30, 2010
    16,355
    6,852
    Basically, yes.
    Internal resistance at .014 ohms will be the limiting factor.
    25.2A x .014 = .3528 volts of internal loss during a 2C discharge rate.
     
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