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question about battery charge capacity

Discussion in 'Prime Plug-in Charging' started by varmonter, Mar 27, 2021.

  1. varmonter

    varmonter Junior Member

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    Im new here. Ive read in several threads about using the "Departure time" charging function on my new prime.
    The reason being its better to
    not let the battery sit at full charge for hours b4 you use it.
    But ive also read toyota builds in
    wiggle room into its charging structure. It only charges to 80%
    or discharges down to 10%.
    These numbers are from memory. (im old so may be wrong ha) But anyway why do we
    worry about a full battery charge if its not actually a full charge.
    Seems Toyotas engineers have
    solved this for us??
     
    #1 varmonter, Mar 27, 2021
  2. bisco

    bisco cookie crumbler

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    read your manual. toyota states 'not to leave it fully charged for long periods of time'

    they don't define time, it's different for every person:cool:
     
    #2 bisco, Mar 27, 2021
  3. fotomoto

    fotomoto Senior Member

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    One big reason to not let a battery sit fully charged is heat. OP is in Vermont so this is not a big deal like it is for someone in Texas or AZ, etc.
     
    #3 fotomoto, Mar 27, 2021
  4. sam spade 2

    sam spade 2 Senior Member

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    But not significantly better over short periods like you are talking about.

    It seems that a lot of hybrids sold include infecting the new owner with OCD as a free accessory.
    :)
     
    #4 sam spade 2, Mar 27, 2021
  5. jerrymildred

    jerrymildred Senior Member

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    I wouldn't say "solved," but maybe "somewhat mitigated." I don't mind having mine finish charging a couple hours early. It lets it cool down a bit from the charging if it needs to. But if it's all day or overnight, I'm more comfortable with it at 50% or lower.

    I presume that Toyota doesn't give precise time limits for sitting all charged up because someone most certainly will let theirs sit for just under that limit day in and day out and then sue Toyota when their battery fails just after the warranty expires.
     
    #5 jerrymildred, Mar 27, 2021
  6. varmonter

    varmonter Junior Member

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    Thanks i tried last night to setup
    the departure time for 9am .
    i also set the climate on.
    i saved it..its recorded..it didnt charge or heat. the chargeport light was blinking..So i dont know
    whats up with that. Theres alot of features i cant seem to get to work on this car..mostly software
    related. I may have to go to the
    stealership and have them prove me dumb. I did manage to get
    toyota-alexa to work. 2021 pp le
    325 miles on the odo. i cant seem
    to get the connect features to work. and last night the departure
    time charge didnt work. Its a nice car as is ive put 300+ miles in 4 days and put 2 gal of gas in today. So im diggin that for sure.
     
    #6 varmonter, Mar 27, 2021
  7. jerrymildred

    jerrymildred Senior Member

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    Check the easy stuff first. Is the clock correct? It's very easy to have it off by 12 hours.
     
    #7 jerrymildred, Mar 28, 2021
  8. varmonter

    varmonter Junior Member

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    Well it was set for Sat at 9am.
    pretty sure the clock in the car is right but ill double chk. also ill chk
    the calendar settings..
    That wouldccertainly answer alot
    of questions..LOL.
     
    #8 varmonter, Mar 28, 2021
    jerrymildred likes this.
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