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 Post subject: Traction battery goes to LO when sitting a few days
PostPosted: Wed Feb 28, 2018 1:22 pm 
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Joined: Mon Aug 07, 2017 4:55 pm
Posts: 196
Location: Duvall, Wash.
I use my RAV4EV as a daily commuter, mostly. The two times I've been away on vacation etc., I've been careful to leave the traction battery in a semi-discharged state, ie not fully charged.

I have been away for a week, and this time I noted a 20 mile GOM before leaving; upon return, it was 'LO' again.

I do have a Pre-Climate schedule set, but I had assumed that it would not be triggered due to SOC under 50%.

Should I be doing something additional to prepare the RAV4 for not being used for a few days (five days for this last trip; two weeks in December)? It seems unusual that the traction battery would discharge so much when not being driven.

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Al Savage
2014 Rav4 EV, Shoreline Blue Pearl, #2609, first use 04Jun2014, 49k miles (Aug2017), OpenEVSE 40A. First DU replacement May2018 59k.
2018 Model 3 LR AWD, blue. 9.6kw solar
1999 E300 on B100 (sold Sep2018)
http://nissandiesel.dyndns.org


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 Post subject: Re: Traction battery goes to LO when sitting a few days
PostPosted: Wed Feb 28, 2018 6:11 pm 
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Joined: Thu Jan 17, 2013 11:13 pm
Posts: 1828
Location: Los Altos, CA
When I leave my car for more than a week, I put the 12V on a tender and make sure all the conditioning events are turned off. I also don't charge the car before I leave, so it's between 25% and 75% SOC. I have seen a couple spurious LO readings on the GOM, even when fully charged, but they all went away after a few moments or a single power cycle of the Start/Stop button.

The traction battery SOC should not change when parked unless there is conditioning active.

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2012 Shoreline Blue #1462 w/JdeMO | 2018 Tesla Model 3 LR | 4.32kW Motech/Enphase PV Solar + 2x Powerwall 2 AC| Leviton EVB40 40A & Jesla Home Charging | 2015 e-Golf LE (returned)


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 Post subject: Re: Traction battery goes to LO when sitting a few days
PostPosted: Thu Mar 01, 2018 4:39 am 
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Joined: Mon Aug 07, 2017 4:55 pm
Posts: 196
Location: Duvall, Wash.
Hmmm. Next time I go away and return days later with a 'LO', I'll have to try to actually drive it and see if it changes. So far, I've been plugging it in and charging it -- that fits my usage pattern, starting the next morning with a "full tank".

Thanks for the feedback.

_________________
Regards,
Al Savage
2014 Rav4 EV, Shoreline Blue Pearl, #2609, first use 04Jun2014, 49k miles (Aug2017), OpenEVSE 40A. First DU replacement May2018 59k.
2018 Model 3 LR AWD, blue. 9.6kw solar
1999 E300 on B100 (sold Sep2018)
http://nissandiesel.dyndns.org


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 Post subject: Re: Traction battery goes to LO when sitting a few days
PostPosted: Thu Mar 01, 2018 7:03 am 
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Joined: Mon Feb 24, 2014 8:51 pm
Posts: 628
Takes about 8 seconds to switch the timer off and immediate charge on to stop the climate system.
Then a few more seconds to re-enable the timer upon return.


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 Post subject: Re: Traction battery goes to LO when sitting a few days
PostPosted: Thu Mar 01, 2018 12:54 pm 
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Joined: Mon Aug 07, 2017 4:55 pm
Posts: 196
Location: Duvall, Wash.
Well, sure, but Pre-Climate isn't supposed to come on if the SOC is low, right? So, why bother?

I leave the SOC well below 50% when I go out of town.

_________________
Regards,
Al Savage
2014 Rav4 EV, Shoreline Blue Pearl, #2609, first use 04Jun2014, 49k miles (Aug2017), OpenEVSE 40A. First DU replacement May2018 59k.
2018 Model 3 LR AWD, blue. 9.6kw solar
1999 E300 on B100 (sold Sep2018)
http://nissandiesel.dyndns.org


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