Prius PHV battery

Discussion in 'Prime Technical Discussion' started by PiotrLe, Jan 18, 2020.

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  1. PiotrLe

    PiotrLe New Member

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    Fully charged my battery on Thursday night and the car was not used on Friday. On Saturday, I noticed the battery is empty again which means the batter lost all charge in less than 48 hours. Is this normal?
     
  2. schja01

    schja01 One of very few in Chicagoland

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    Not normal.
    Could be a bad battery or something is putting an unwanted drain(parasitic) on the battery.
     
  3. Bob Comer

    Bob Comer Active Member

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    Definitely NOT normal. I've had my car sit for a week and it not lose any of the charge.
     
  4. bisco

    bisco cookie crumbler

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    any chance you left the car on?
     
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  5. FuelMiser

    FuelMiser Senior Member

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    If the car's in READY mode, it will keep the traction battery at least viable in the HV portion of the SOC. No way it would run all the way down.
     
  6. FuelMiser

    FuelMiser Senior Member

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    Did you leave the charger plugged in the entire time?
     
  7. jerrymildred

    jerrymildred Senior Member

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    Welcome. You didn't give us a lot to go on there. Several questions come to my mind to help figure out what happened since those batteries don't self discharge like that. And one comment.

    The comment is that it's wise to pay attention to the owner's manual when it says that it's not good for the battery to leave it fully charged for long periods. If you want it to last as long as possible, charge it right before you use it.

    Questions.
    Have you had the car for a while and are you familiar with the charging scheduler?
    Are you absolutely certain it actually did charge?
    When you plugged the EVSE into the car's charging port, did the green light in the port blink several times and then go out or did it just come on and stay on. The former indicates that it's going to wait till the next scheduled charge while the latter says it's charing immediately.

    I ask because until you get familiar with the system, it's super easy to assume that it will charge but then it doesn't because of some oversight in the scheduling or other assumption.
     
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  8. schja01

    schja01 One of very few in Chicagoland

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    Could the OP be referring to the 12volt battery?
     
  9. bisco

    bisco cookie crumbler

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    i thought he meant 'empty of wall charge', sorry.

    sonds like a trip to the dealer for recharging.
     
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