TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC

Long term Storage effects on battery

Discussion in 'Roadster' started by philmall, Jan 30, 2018.

Tags:
  1. philmall

    philmall New Member

    Joined:
    Jan 30, 2018
    Messages:
    2
    Location:
    australia
    Hi - (potentially) new roadster owner here ... The problem is I need to store the car for a year or so, before I export it to Australia ... I am worried that the long period of inactivity will damage the battery.

    Would anyone know of ways to ensure the battery stays in good nick during this time```?

    The next problem, assuming we solve that, is what happens during the long voyage (6-7 weeks minimum) ? Is there a way of preserving the battery ?
     
  2. Stefan T

    Stefan T Member

    Joined:
    Jan 31, 2015
    Messages:
    280
    Location:
    Sweden
    take out the ESS plug
     
    • Like x 1
  3. widodh

    widodh Model S 85kWh

    Joined:
    Jan 23, 2011
    Messages:
    5,832
    Location:
    Middelburg, The Netherlands
    Plug it in and put it in storage mode.

    And regularly check if it is still connected!

    Before it goes on a ship, charge it to 95%
     
  4. philmall

    philmall New Member

    Joined:
    Jan 30, 2018
    Messages:
    2
    Location:
    australia
    Thanks.... any hints on what an ESS plug is and why this resolves the problem ?
     
  5. Jonathanm

    Jonathanm Member

    Joined:
    Dec 7, 2014
    Messages:
    181
    Location:
    Monaco

    Its inside the left rear wheel well. It totally isolates the battery from the car. Its an orange plug with a lever to lift up and then remove. You will also have to do disconnect the 12V battery right side fwd. of front wheel well. I had mine disconnected for 6 months and the loss of charge was negligible...so you can rest peacefully knowing you don't need power. However give your battery a charge to around 70% before you disconnect and you should be fine.

    I have 1 question however...Is it possible to remove the service disconnect with the car in tow mode so the car can still be pushed around? My feeling is that it is not possible?
     
    • Informative x 1
  6. hsull8915

    hsull8915 Member

    Joined:
    Aug 7, 2017
    Messages:
    92
    Location:
    Fort Worth, TX
    I feel as if I’ve read several times that range charging then letting a Roadster sit is discouraged. Can someone verify this?
     
  7. gregd

    gregd Active Member

    Joined:
    Dec 31, 2014
    Messages:
    1,887
    Location:
    CM98
    It is true.

    I guess the question is whether it's better to stress the battery by letting it sit at high charge, or risk having the battery hit zero and get bricked. But, the difference between a standard charge (83%) and Range charge (94%) is not that huge, and if it's going to be that close to running out of charge, perhaps change the means of shipment instead of stressing the battery to mitigate the risk. My car looses about a mile or so per day, just sitting in the garage. If your car is similar, that means your 7-8 weeks shipment is fine, but you don't have a huge margin for delays or for the battery heater to kick in if it gets really cold. (So, time of year for the shipment could be a factor too.)
     
    • Informative x 1
  8. slcasner

    slcasner Member

    Joined:
    Feb 20, 2011
    Messages:
    705
    Location:
    Sunnyvale, CA
    Greg, you are right that the car can lose a mile or so per day of range when sitting, but it is not linear to zero. I observe that if I have driven it down to 50% or so then it may not lose any more, or lose at a slower rate. It also depends upon the temperature. I don't know what temperature the car would likely experience in shipment to Oz.
     
  9. gregd

    gregd Active Member

    Joined:
    Dec 31, 2014
    Messages:
    1,887
    Location:
    CM98
    Ha, good to know. I've only left mine unplugged for about a week or so, so don't have any long-term experience. Shipment to Oz will be interesting, since the car will be swapping seasons. Ship in summer, and it lands in winter. Could be an important factor. I'm also presuming that high temps won't be as much of a factor, but that should be checked as well. What is the trigger for active cooling? 30c, or is it higher?

    Just curious, what does Tesla recommend, both in terms of car preparation and choice of shipper?
     
  10. Drewflux

    Drewflux Member

    Joined:
    Aug 25, 2015
    Messages:
    272
    Location:
    Australia
    @philmall intrested to hear more on this plan. Are you planing to register it here when landed? As you are going to store it for 12 month, are you bringing it as a personal import? I wonder if a USDM vehicle will meet requirements for the Raws/sves. Or if it would need to be converted to RHD.
     
  11. slcasner

    slcasner Member

    Joined:
    Feb 20, 2011
    Messages:
    705
    Location:
    Sunnyvale, CA
    It is a combination of SOC above a certain level combined with temperature; sorry I don't have those numbers memorized. The active cooling is just running the coolant pump, which does not really cool the battery, so it just runs until the SOC gets below the threshold.
     
  12. gregd

    gregd Active Member

    Joined:
    Dec 31, 2014
    Messages:
    1,887
    Location:
    CM98
    Isn't there a trigger temperature where the car turns on the AC too? I know it does that while charging or driving, but I thought it also could do it if the car was just sitting in the sun long enough on a hot summer day.
     
  13. slcasner

    slcasner Member

    Joined:
    Feb 20, 2011
    Messages:
    705
    Location:
    Sunnyvale, CA
    AFAIK, no. That is the motivation for the OVMS features for initiating a cooldown operation.
     
  14. Mark77a

    Mark77a Member

    Joined:
    Jul 7, 2012
    Messages:
    361
    Location:
    Poole, Dorset, UK
    One more data point:....... I know a very experienced Tesla Engineer, who has been with the company since the start, and qualified to totally rebuild roadster ESS', as well as having full access to all Tesla Engineering records and databases .. ...

    This guy, also owns a pristine 8 year old Roadster 2.0 with only a few miles on it.

    And whilst the consensus is to store Li-ion batteries, at c 50%, ...... he keeps his Roadster stored permanently plugged in, in standard mode. I now do the same (7+ year old original ESS) .. I've tried both ways and see much bigger drops in health (CAC) when in storage mode Vs standard mode.

    Now (with hindsight !! ) I also rarely charge to 100% SOC in range mode, but still drive in range mode. I also avoid pulling many amps/watts below 30% SOC.
    I try and charge before a drive to balance and have higher SOC when giving the batteries a 'work out' :)
     
    • Informative x 2
    • Like x 1

Share This Page

  • About Us

    Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.
  • Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


    SUPPORT TMC