1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Hybrid battery discharging over night

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by sp00ky, Oct 14, 2012.

  1. sp00ky

    sp00ky Junior Member

    Joined:
    Sep 28, 2012
    23
    2
    0
    Location:
    Sweden
    Vehicle:
    2010 Prius
    Model:
    N/A
    Hi all,

    I notice at hybrid battery is discharging over night (usually between 1 and 3 parts on battery monitor). Is that normal or should I call mr. T and make appointment :) ?
     
  2. Paradox

    Paradox Prius Enthusiast / Moderator
    Staff Member

    Joined:
    Sep 22, 2005
    29,110
    8,590
    201
    Location:
    USA
    Vehicle:
    2014 Prius v wagon
    Model:
    Five
    Normal, a visit to the dealer would quite honestly be a waste of time. Don't worry about the level of charge displayed, it really doesn't matter much. The car will manage everything as necessary.
     
  3. sp00ky

    sp00ky Junior Member

    Joined:
    Sep 28, 2012
    23
    2
    0
    Location:
    Sweden
    Vehicle:
    2010 Prius
    Model:
    N/A
    I was at Mr.T from some other reasons and I have mention this battery drain "issue" and they just confirm your words Paradox.
    Prius automatically manage hybrid battery level.
     
  4. David Barton

    David Barton Junior Member

    Joined:
    Jun 25, 2012
    29
    5
    0
    Location:
    Bremerton, Washington
    Vehicle:
    2012 Prius
    Model:
    II
    Probably from the temperature change from being charged and discharged while you are driving the battery will warm up thus making voltage increase which will cause the meter to appear higher to the car and as the battery cools the voltage goes down making the car think the battery has a lower charge. Somebody double check me here I could be backwards in my thinking I just know you have to temperature compensate for voltage on the submarine im on when we are doing a battery charge or discharge just cant remember which way it goes.