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Oh the irony

Discussion in 'Model 3' started by Puddles, Jun 2, 2017.

  1. Puddles

    Puddles Member

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    Does anyone else find it funny that even though we are/will be driving around with the hugest and most tricked out rechargeable battery ever made, we're of no use to our neighbor whose pickup's battery has died and needs a jump.

    I suppose we could use one of those cigarette lighter booster gizmos. Will my Model 3 even have one of those?
     
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  2. bakerboy

    bakerboy Member

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    The day I picked up my 2013 CPO MS, I went back to work and right before I was going to leave for the day a co-worker stops by and asks if I can give him a jump, I looked right at him and said: "I can't, I don't have a battery, well I do but I it's not reachable" him knowing that I had a Toyota Camry just looked at me with a blank stare. I then told him I just picked up my new/old car, a Tesla!!! LoL
     
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  3. slipnslider

    slipnslider Member

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    I also find it funny that cars with massive batteries still need a separate 12v battery to start and function.
     
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  4. Firewired

    Firewired Member

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    Something has to provide power to switch the contactor and engage the main battery. Otherwise high voltage from the main battery would be live even when the car is off, if I am to understand correctly.
     
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  5. Haxster

    Haxster Member

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    In a way, it's kind of a shame that the 12V batteries on the MS and MX aren't more accessible and easy to change. From what I've been reading, they don't seem to last any longer than batteries in ICE cars. But at least they're smaller and cost more.o_O
     
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  6. Puddles

    Puddles Member

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    Surely there's a way to tap in safely.
     
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  7. BradWI

    BradWI Supporting Member

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    Would have been nice if there was a way to use the car's main battery to power household items in the case of a power outage.
     
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  8. slipnslider

    slipnslider Member

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    The new electric WORKHORSE truck has a big utility outlet so that it can be used to power tools on a construction site.
    And the chevy volt can be used to do exactly what you're describing, but I think it might require a little rigging.
     
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  9. EV-lutioin

    EV-lutioin Active Member

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    Of course they would not need a jump if they owned an EV ;)
     
  10. BluestarE3

    BluestarE3 Active Member

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    I had a similar encounter many years ago with my Prius when someone asked if I could jump-start his car. Rather than try to explain and show that the 12v battery is tucked away in the trunk and inaccessible without tools, I just said the hybrid's high voltage battery is incompatible and would fry his car's battery if we attempted a jump start. I suggested he check with other car owners in the parking lot or the auto parts store at the corner of the mall.
     
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  11. timk225

    timk225 Member

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    In today's very annoyingly politically correct world, they are no longer called "cigarette lighters", they are now "12 volt power outlets".
     
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  12. timk225

    timk225 Member

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    Yeah, rly. How hard could it be to tap 12 volts off the main battery?
     
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  13. trm2

    trm2 Member

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    You need a simple inverter for the Volt. That really puts that 1.5l generator to good use.
     
  14. Puddles

    Puddles Member

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    Here's the exact thing! Why buy a powerwall, if your car can run the place in the evening, then recharge after you go to bed?
     
  15. Chuq

    Chuq Member

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    Doesn't sound unreasonable, considering that's exactly how they've been used for the last decade.
     
  16. Chuq

    Chuq Member

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    The powerwall can charge up from solar during the day while you're at work?

    Alternatively, those who are lucky enough to be able to charge at work will no doubt reduce in number as employers find they are not only covering their employees travel but also their employees' families' homes!
     
  17. ProphetM

    ProphetM Member

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    2 to 3 decades, really.
    In fact cars often don't even come with a cigarette lighter anymore (nor an ashtray), they're just an empty socket or have a cap. And some cars like minivans have multiple outlets. "12 volt power outlet" is an accurate descriptor.
     
  18. ikjadoon

    ikjadoon Member

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  19. nwdiver

    nwdiver Active Member

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    .... yeah... like firewired said...

    there's a relay for the contactor to engage the main battery. Otherwise high voltage from the main battery would be live even when the car is off, if I am to understand correctly.

    There's a DC-DC converter that unless it's been redesigned does a pretty poor job of maintaining the voltage on the 12v. Accurately controlling ~400v => ~12v is apparently challenging. If there is a new DC-DC converter that does a better job then I want one because the one I have now is crap.
     
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  20. JeffK

    JeffK Well-Known Member

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    Elon said they wanted to get rid of the 12V in Model Y. That doesn't help us Model 3 reservation holders though.

    Just an FYI: Using the Tesla HV battery as a stationary power source voids the warranty.
     

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