How to make battery last longest?

Discussion in 'Prime Care, Maintenance and Troubleshooting' started by idahohacker, Apr 4, 2019.

  1. idahohacker

    idahohacker Junior Member

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    I read online that lithium ion batteries last longest between 25-75%. So should I try to keep it in that range to make the battery have the longest lifespan if I plan on keeping the car for 35 years?
     
  2. schja01

    schja01 One of very few in Chicagoland

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    The car does that for you. What you see is really the 25/75 percent levels.
    Or maybe 20/80. Close enough IMO.
     
    #2 schja01, Apr 4, 2019
    Last edited: Apr 4, 2019
  3. mikey_t

    mikey_t Active Member

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    35 years?? I admire the ambition and passion for cost effectiveness.
     
  4. bisco

    bisco cookie crumbler

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    the problem with keeping the car that long compared to a gasser is that the tech is changing so rapidly, it won't be worth it.
     
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  5. Skylis A

    Skylis A Senior Member

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    If I recall, ScanGauge II reads:

    83% SOC when battery is fully charged
    14% SOC when it gets to 0.0 miles and enters hybrid mode
     
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  6. Salamander_King

    Salamander_King Senior Member

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    Hummm, 35 years. I may not be alive, and my kids (or grand kids) probably do not want rusted junk car even if the battery is still good. lol :D

    Yeah, as others chimed in, the car takes care of it for most part.
     
  7. lextoy

    lextoy Active Member

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    To make it last longer...
    Never store battery completely full, so that means as soon as it's done charging, you should start using the battery. Use the departure time charger setting to optimize this.
    Set max amps to 8 for charging.it will take longer, but less strain on battery while charging.
    Do not leave car in hot sun.heat degrades the battery.garage storage is best. extreme cold not good either, but unlikely you are anywhere cold enough that that will be an issue.
    Only charge when battery is down to HV mode, don't top off.
    Drive economically, severe Drain on the battery for excessive acceleration or excessive charging from hard braking heat up the battery.heat= bad
    Change transaxle fluid at 25k and then at 75k intervals after that. This lubricates and protects and cools your major electric drive transmission system.You want this system to be working optimally.
    Oil at regular intervals, and other fluids at every 100k or ten years.
     
  8. jb in NE

    jb in NE Senior Member

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    How do you know this? Depending on battery chemistry, slow charges might not be best.

    Two points - 1. If it's at 15%, I'm not going to not charge it and run out of EV on my next trip. 2. I don't think top-offs affect battery life. It's the accumulated bits and pieces over time, so two half charges are likely not worse for battery life than a full charge.
     
  9. padroo

    padroo Senior Member

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    No matter what you do I doubt the original battery will last 35 years. Batteries have a lifespan that can be lengthened or shortened but still will not make it 35 years. Start saving for a new battery now.
     
  10. bruceha_2000

    bruceha_2000 Senior Member

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    Pretty sure the car won't last 35 years either. Then again, neither will I, at least not 35 more!
     
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  11. Tha_Ape

    Tha_Ape Member

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    I do not know, there are some classic 80's cars out there today. Prius is an iconic name and the Prime would be one of the first that was plug-in. In a future world of electric cars, it may be super rare and coveted. OK... I'll take my tinfoil hat off.
     
  12. m8547

    m8547 Active Member

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    Keeping the battery cool probably provides the most benefit of anything you can do. You can do that by parking in the shade, using the charge timer to charge overnight when it's cool, and avoiding hard acceleration and long regen braking braking.
     
  13. Tha_Ape

    Tha_Ape Member

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    If you have a garage, leave the windows down to help ventilation (this negates using pre conditioning after scheduled charging)
     
  14. buenavides1

    buenavides1 New Member

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    Here are some of the answers from the internet:

    Limit Short Rides
    Keep Your Battery Tightly Fastened
    Turn Off All the Lights When You Exit
    Control the Corrosion
    Test Your Battery Often
    Don’t Use Electronics While Idling
    Care for Your Whole Car
     
  15. Peng Xiao

    Peng Xiao Junior Member

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    There are from the manual,
    Avoid parking the vehicle in areas with a high temperature under direct sunlight when the hybrid battery in fully charged.
    Avoid accelerating and decelerating frequently and suddenly when EV driving.
    Avoid frequent driving near the top speed for EV driving.
    Leave a low level of charge in the hybrid battery when leaving the vehicle undriven for a long period of time.
    Use the charging timer function as much as possible in order to fully charge the hybrid battery immediately before starting off.
     
  16. m8547

    m8547 Active Member

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    I wonder if a solar powered fan would help, since the inside of the car is often much hotter than the outside even if I leave the windows slightly open. But all the cheap ones are bad. Good Idea done Badly, Auto Cool Solar Powered Car Vent, Issue 12, Page 5

    Does anyone have a suggestion for a good reflective shade for the windshield? The one I have is too small for the giant windshield.
     
  17. vvillovv

    vvillovv Active Member

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    Drive it once a month in EV mode. Drive it once every 6 months in HV mode.

    That should get ya out 35 years worth, easy.
     
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  18. Mendel Leisk

    Mendel Leisk 'Orrible Oracle

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    Yes and no. Unless the car becomes unroadworthy for some technical reason, I'd say mostly no. If it's just due to lack of infotainment or similar, an emphatic no. On the other hand, say all cars on the road were mandated to have some centralized navigation system, then a reluctant yes. Maybe...

    Still, 35 years is pretty ambitious.
     
  19. bisco

    bisco cookie crumbler

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    i'm thinking more along the lines of battery improvement and etc.

    2055? like a paradigm change more than once.

    otoh, you aint gonna do nuthin that will make a battery last that long
     
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  20. Roy2001

    Roy2001 Active Member

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    Prime reserves close to 30% unused.

    I assume it is more close to 20-90% as it needs to keep some charge for HV mode.
     
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