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Turning off AC at stops OK?

Discussion in 'Gen 2 Prius Main Forum' started by pasadena_commut, Jul 27, 2022.

  1. pasadena_commut

    pasadena_commut Senior Member

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    The traction battery in our 2007 is long in the tooth. It is still fine for most driving, but it just is not happy running the A/C for long when the car has come to a stop and the motor has turned off. The displayed SOC pretty rapidly descends and soon the motor comes on. To avoid this I have of late been turning the A/C off when the car stops, and then turning it back on before driving off. Even though it has been quite hot lately, with the car set to recirculate it does not heat up all that much at a 45s light, and the SOC does not descend at all with the A/C off.

    That is certainly easier on the big battery, but is it hard on the A/C, especially the compressor?
     
    #1 pasadena_commut, Jul 27, 2022
  2. PriusCamper

    PriusCamper Senior Member

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    A/C isn't going to be an issue. But reconditioning your battery pack needs to be done if you want to maximize it's lifespan because nickel-based batteries loose capacity due to crystallization and need three rounds of deep cycling to break that up and restore capacity every 18 months once they get old. You can learn more here: FAQ (Frequently Asked Questions) | Hybrid Automotive

    And if you want to build your own battery maintenance gear you can save alot of money. Learn more here: Build Hybrid Battery Maintenance Gear For Under $100 | PriusChat
     
    #2 PriusCamper, Jul 27, 2022
  3. Doug McC

    Doug McC Active Member

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    To answer your question in simple terms: no it won’t.
    Heck, I do that with my new 2022 Gen4 (however, mine has an electric a/c compressor), but it won’t hurt either one of them.
     
    #3 Doug McC, Jul 27, 2022
  4. PriusCamper

    PriusCamper Senior Member

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    You'll have to find a better way to brag about your new Prius because Gen2 Prius also "has an electric a/c compressor."
     
    #4 PriusCamper, Jul 28, 2022
    Ernie stires and Doug McC like this.
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