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Re: Bricked

Posted: Thu May 09, 2019 4:52 am
by spazzman90
LOL regarding the model 3 as a 'better' 12 volt management system.

In short, there is no 12 Volt management system. It is always running, and it uses a lot of power especially in temps lower than 50 degrees ambient. The car would never survive a month parked in cooler temps by itself. It loses 5% per day, just sitting. One of the more annoying aspects of Tesla ownership. Bolt, Spark EV, Kia Soul EV, even Leaf. I can leave sit for a couple weeks and the traction battery doesn't lose anything, and the car is generally ready to go. One more thing. Lose 12 Volts in anything but a Tesla, and you can use your jump pack and go. Lose 12 Volts in your Tesla, and it gets super annoying really quick.

-Jeff

Re: Bricked

Posted: Sun May 12, 2019 9:38 pm
by mrdrmorgan
iwatson wrote:Although I guess I understand your issue, a month is a long time to leave any car. The Bolt certainly has the possibility of a work around for your unique situation. The Bolt has the ability to be remote started from an app on your phone. On a long trip as you describe, you could start your car up once or twice a week and let it run for 10-15 minutes, which should keep the 12v system charged.

Once started the car will run for 20 minutes and shut-off automatically, but I'm not suggesting you let it rip until it shuts off automatically. If memory serves you can only initiate two (2) remote starts under this condition. However if you remotely start it, then remotely shut it down after 10-15 minutes, you may be able to get the multiple start ups that your situation requires.

If you decide to test this out, please report your findings, as there may be others that fall into this unique operating condition.

This may sound "dumb' BUT, understanding that the 12 volt AGM battery can go dead if the car is parked and not used for long periods of time and no 110 VAC is available for a trickle charger, why not just disconnect the negative battery cable when you leave and reconnect it when you return?

Re: Bricked

Posted: Mon May 13, 2019 12:37 am
by YamanoteMaui
Yes, silly me, thinking that large high voltage full charged battery was sufficient to keep by Bolt going!

Re: Bricked

Posted: Mon May 13, 2019 2:10 am
by mrdrmorgan
YamanoteMaui wrote:Yes, silly me, thinking that large high voltage full charged battery was sufficient to keep by Bolt going!

With the ignition turned off and the key FOB removed from the car, I am wondering if the 12-volt battery charging function is also powered down and the HV battery does not charge the 12-volt AGM battery. I say this because whenever I use my AGM 12-volt battery charger, the display shows the 12-volt battery in both of my Spark EVs only have a 50% charge. However, Some functions must remain powered up. Otherwise, the key FOB, Onstar, etc. would not work.

Re: Bricked

Posted: Thu May 16, 2019 2:20 am
by SparkEVPilot
mrdrmorgan wrote:
YamanoteMaui wrote:Yes, silly me, thinking that large high voltage full charged battery was sufficient to keep by Bolt going!

With the ignition turned off and the key FOB removed from the car, I am wondering if the 12-volt battery charging function is also powered down and the HV battery does not charge the 12-volt AGM battery. I say this because whenever I use my AGM 12-volt battery charger, the display shows the 12-volt battery in both of my Spark EVs only have a 50% charge. However, Some functions must remain powered up. Otherwise, the key FOB, Onstar, etc. would not work.

In another post I made on this forum, I reported that the 12 volt AGM battery appears to be trickle-charged when the car is plugged in and, when the car is powered up, the HV battery then provides the main charging of the 12 volt battery.