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Maximum Current Draw vs. State of Charge

Discussion in 'Battery Discussion' started by rolosrevenge, Dec 15, 2009.

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  1. rolosrevenge

    rolosrevenge Dr. EVS

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    So I have an interesting question. I know that the Roadster can charge with different maximum amp cables (15, 20, 40, 50, 70) but how is the maximum amperage that the battery can draw affected by the current state of charge. I know it isn't flat, but is it flat within a specific range (10%-90%)? I have been wondering this for awhile now. Does anyone know where this sort of information can be found?
     
  2. mpt

    mpt Electrics are back

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    Warren, New Jersey, United States
    Me too.

    I've heard that max performance is only available at full charge with a warm but not hot battery.
     
  3. rolosrevenge

    rolosrevenge Dr. EVS

    Joined:
    Feb 7, 2009
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    I am looking more specifically how much current the battery can pull when it is charing. I know it tapers off as it reachs full, but what does it look like.
     
  4. TEG

    TEG TMC Moderator

    Joined:
    Aug 20, 2006
    Messages:
    19,461
    Non-Tesla Li-Ion charging articles:

    Challenges in Li-ion charging - Electronic Products
    Microcontroller-Based Mixed-Signal Battery Charger Adapts to Multiple Chemistries Page of
    807PET22-battery-charger-Figure01.jpg

    Proper Care Extends Li-Ion Battery Life Page of
    804li-ion-battery-life-Figure01.jpg

    Current, voltage and temperature govern Li-Ion battery charging - Part 2
    Fig18.jpg
     

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