Battery Internal Resistance

Discussion in 'General Electronics Chat' started by Malcolm Sanders, Jun 21, 2014.

  1. Malcolm Sanders

    Thread Starter New Member

    Jun 21, 2014
    1
    0
    A battery as a source is often represented by its O/C voltage in series with its internal resistance. When it is being charged can it be represented in the same manner with the same IR or does the internal resistance change when it is being charged??
     
  2. MrCarlos

    Active Member

    Jan 2, 2010
    400
    134
    Hi Malcolm Sanders

    If the battery is half loaded, has a lower impedance* than when it is fully charged.

    So the impedance* changes as you go charging.

    But if it is loaded by means of a current regulator. that is another roll.

    * internal resistance
     
  3. crutschow

    Expert

    Mar 14, 2008
    13,003
    3,232
    The battery apparent internal resistance does change some with the state of charge, going down as the charge goes up, but is basically the same whether it is being charged or discharged (for a given state of charge).
     
  4. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
    1,066
Loading...