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On using TeslaFi, I disagree. Sleep settings are configured properly, I am only reporting the sleep period here.
On the "blue" battery slice... Let me list all relevant events.
Park ended at 313km range, battery still warm.
Sleep for 12h, ended at 284km.
Park with precondition for 14 minutes, ends at 272km
Drive for 4.6km, range after drive of 274km.
Yes, there is some freezing/thawing but there is still significant loss in the night. If you assume 50% efficiency for my drive so add back 9km of range from 274 you get 283km. That's still 30km of range lost since previous evening. I assume after my drive my battery didn't have the snowflake anymore. I don't remember for sure but am pretty sure.
Cabin overheat only works for 10 hours or so after exiting car, FWIW.
FYI:
A good indicator of cooling is looking at regen limit. If you parked with full regen and looked in the morning and had no regen then your battery cooled quite a bit and might show more loss than you'd like to see.
It is somewhat downhill but I know I typically do no better than 50% efficiency even then because of the stop-go. With that said, you're right, there's a lot of information missing and I did not add back preconditioning. I still think there was a bigger loss on a cold night parked outside than when I leave my car in my heated garage. I just can't quantify it properly. I was trying to let camalaio know he's not aloneYou did not count (add back in) the precondition usage! (Was probably 16+km not 12km, in reality, due to warming.)
And really hard to say on your drive without trip meter info - could have been all downhill!
Also know that the higher your state of charge the quicker you will see impacted regen from cooling.
Hey folks,
I know, I know. Another range loss thread. Another vampire drain thread.
Here's a possibility, what if the 12v battery is weak (and now even weaker due to the cold), and the charging system is constantly have to charge it? Is there an easy way to gauge the health of the 12v battery?
Hi Fred. My sleep settings in Teslafi make for no drain. I’m going to check COH and keep climate on. Smart Summon standby is off. Thanks for the tip.Check all of your settings, I noticed after a firmware update that some of my settings I normal have off were on again, “Cabin overheat protection” and “Keep Climate On” those were on when I always keep them off, also when away and parked somewhere turn off Data Sharing as well.
Shouldn’t lose anything in 12 hours or maybe 1 mile. The Obvious ones Sentry mode, Teslafi, summon and Dashcam will get ya.
ScanMyTesla app will show all voltages and drains as well as the 12 volt battery.
Fred
I couldn’t figure out the sleep setting in Teslafi so I got rid of it completely. Also you can have A Better Route Planner log into the car as well. Make sure this is also disconnected.Hi Fred. My sleep settings in Teslafi make for no drain. I’m going to check COH and keep climate on. Smart Summon standby is off. Thanks for the tip.
On using TeslaFi, I disagree. Sleep settings are configured properly, I am only reporting the sleep period here.
On the "blue" battery slice... Let me list all relevant events.
Park ended at 313km range, battery still warm.
Sleep for 12h, ended at 284km.
Park with precondition for 14 minutes, ends at 272km
Drive for 4.6km, range after drive of 274km.
Yes, there is some freezing/thawing but there is still significant loss in the night. If you assume 50% efficiency for my drive so add back 9km of range from 274 you get 283km. That's still 30km of range lost since previous evening. I assume after my drive my battery didn't have the snowflake anymore. I don't remember for sure but am pretty sure.
Connectivity issues from the app to your car - is there no cell service?
Once you resolve those issues: The way to tell the car’s sleep status is to use the widget on the iPhone. If it says it is Parked consistently, it is not sleeping. You can’t trust the “last updated” time if it says it is asleep, though.
Try shutting the cabin overtemp off. Problem is it may wake the car periodically and run the fan to circulate the air to get an accurate temp reading regardless of how warm or cold it is.
Thread owner, I chat with Tesla support on the other day , they told me that losing 25km per night (12hrs) period in a covered garage with temperature sub zero C is perfectly normal. So nothing you can do, even if you take your car to the service they will tell you the same
Ok, so I looked at TeslaFi to find one night where I parked outside and it was cold (-15C). In 12h, and the car was really asleep, I lost 28.54km of range, or 3.89kWh of energy. I guess it is normal... I had not realized since I'm normally in my garage.
"but nothing is different in the settings compared to when we're at home with a 1% drain. No sentry mode"
Are you using the location specific setting for Sentry, so you're Home doesn't use sentry, but when you're away, Sentry turns on?
Here's a possibility, what if the 12v battery is weak (and now even weaker due to the cold), and the charging system is constantly have to charge it? Is there an easy way to gauge the health of the 12v battery?
Check all of your settings, I noticed after a firmware update that some of my settings I normal have off were on again, “Cabin overheat protection” and “Keep Climate On” those were on when I always keep them off, also when away and parked somewhere turn off Data Sharing as well.
Shouldn’t lose anything in 12 hours or maybe 1 mile. The Obvious ones Sentry mode, Teslafi, summon and Dashcam will get ya.
ScanMyTesla app will show all voltages and drains as well as the 12 volt battery.
Fred
Exactly. And now our turn to beg you for all the details you left out and re-read your post 20 time to see if anything there. No thanks.
I won't say I know every thread, but what I've seen:
1) Imprecise data leads to exaggeration
2) The large drains come from driving the car and use of HVAC (heading/cooling). Just "a little bit wasn't worth mentioning".
3) Posters are very defensive and ungrateful when confronted about their perception.
While you're right that I could have provided more info in the initial post (please excuse my panic given the situation and lack of charging options), I think the rest of the thread makes it clear that I have somewhat of an idea of energy management with the car already, thanks to people providing great feedback despite the numerous times the topic comes up. In fact, every time it comes up fresh, we seem to get more of an idea how things work. I've observed @AlanSubie4Life 's knowledge and helpfulness for example has greatly increased in the past few months. I applaud folks like him for trying to genuinely help out in each case despite how repetitive it might be. Turns out, we all have a lot to learn. And if nothing else, the darn car's behaviour seems to change every few months as well. Last winter season's knowledge can be misleading compared to today's updates!
And I can't imagine some average A-to-B commuter driving this car, yikes. No wonder people stick to gas if you need to know all this stuff and continue learning as information develops.
That’s an excellent Theory.
And it does appear based on other posts the 12V batteries don’t have the longest life span.
Sure would be nice to know how much 12V charging is going on. I wonder if the CANBus scanner apps can get that.
Last night I forgot something in the car and went to it an hour after we parked it to discover that climate control was running (confirmed via app before I got to the car). All doors were closed, car was locked, and the climate control in the car was not set to on/dog/camp when I got inside it. It wasn't that warm in the car (but definitely warmed), so I'm not sure if it had just turned on a few minutes prior or if opening the app triggered it (it shouldn't, right?). I'm not ruling out that I hit the climate button by accident, but I of course will doubt it. I got my stuff, closed the door, locked the car (confirmed), went back inside and checked the app again and the climate control was still on. Finally turned it off from the app. If it had been doing this on the colder nights, it would certainly be draining a lot!
And I can't imagine some average A-to-B commuter driving this car, yikes. No wonder people stick to gas if you need to know all this stuff and continue learning as information develops.
It sure would!
And if you went back to your car and opened the door, the climate might turn on and dump 5-10% of energy into HVAC to warm the cabin. Actually, that is what happened.
In this case, it was not on while you were not there, rather it turns on when you open the door. You need to turn off HVAC before leaving the car or upon entering in this case. It turns off when you leave, but not after draining 10% battery (in extreme climate), and possibly even more if the doors were open for an extended time w/ climate on.
New technology has its pros and cons. Back in the 60s it was common for people to work on their cars, change oil, brakes, etc. You are just expecting that your ICE knowledge and expertise will transfer over. The problem is worse the older you are.
People experienced with ICE cars still leave the lights on and they wake up in the morning complaining about "vampire drain". If they don't know how to charge a battery, they certainly have friends/relatives who helped them and educated them.
You are an "early adopter" so your friends+family will be of no help. In 10 years they will be asking you these questions.