My traction battery discharges at night.

Discussion in 'Gen 3 Prius Technical Discussion' started by Seymour1, Jun 20, 2025 at 9:21 PM.

  1. Seymour1

    Seymour1 Member

    Joined:
    Feb 8, 2024
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    Location:
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    Vehicle:
    2010 Prius
    Model:
    Three
    I park it in the evening with the battery showing almost fully charged. Then in the morning, it is almost fully discharged. It also shows a low MPG reading for the first 10 minutes of morning driving (bar graph). What would partially discharge my battery overnight?
     
  2. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
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    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    Battery wearing out . My generation 2 with very new dealer batteries get parked green errynight in am at start green . But quickly to blue