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Battery range - not looking like 310
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jgd108
Member
SageBrush
REJECT Fascism
Straw man.
I accept that Tesla writes for the majority and convenience may trump efficiency. I have no problem paying attention to my battery SoC and charging as needed.
YMMV
SageBrush
REJECT Fascism
chronopc
Active Member
SpudLime
Active Member
Is it possible the OP didn't close a door all the way or left a key card in the car? If the A/C was on and the door wasn't closed or the car didn't shut down, it could cause a lot of drain on the battery.
I know there's been one or two times where we didn't close the door all the way (Model S) and the car didn't shut down and we didn't notice until hours later when we went back to the garage and found the lights on and A/C still running.
I know there's been one or two times where we didn't close the door all the way (Model S) and the car didn't shut down and we didn't notice until hours later when we went back to the garage and found the lights on and A/C still running.
jgd108
Member
Yeah the M3 doors need a good push to close, many times my wife and I have left a door open in the garage and it drains pretty quickly! At a minimum the car should detect nobody is sitting on the seats and turn off lights and climate controls..
No that's not the culprit. Sounds like I just need to get used to normal battery drain when the car is parked over a weekend and not plugged in.
chronopc
Active Member
jgd108
Member
I guess losing charge to safeguard battery pack's life is a good tradeoff.. heard the Nissan Leafs had lots of degradation over time since no battery management system.
That vampire drain has a cost here at 23 cents / KWH at super off peak though.
That vampire drain has a cost here at 23 cents / KWH at super off peak though.
chronopc
Active Member
Wow you pay 23 cents/KwH during off peak? I thought I was paying at lot at 13 cents.
No, that warning comes on if you've set the car at 100% charge for three days in a row. It does NOT come on at 90%. I kept my Model S charged to 90% for five years, and now my Model 3, and only got the warning on either car when we were on trips and I kept the charge set at 100%. By the way after five years of routinely charging to 90%, and to 100% when on trips, my Model S only lost 5% of range. Chill out about the battery, and enjoy the car.
I want to comment on reasons other than vampire drain. I had talked to Tesla about this while obsessing over my MX battery consumption and had done some analysis using my actual driving data.
Things that can increase your consumption while driving:
1. Elevation changes e.g. driving uphill on average consumes more
2. Speed. The faster you go, the higher the drag. In fact if you're driving towards a supercharger while running out of battery, you'll get warning messages "please drive under 55 mph if you want to reach your destination" (and the number keeps going down !). I think the penalty is a nonlinear one.
3. Windy conditions (if driving against the wind
)
4. Air Conditioning and heater usage. (In my car, heater seems to consume more than A/C cooling). If you call Tesla and ask, they are actually tracking consumption of your car separately for driving vs. A/C/heating
5. Spirited driving. When you turn on your energy consumption meter (I think it's on by default on M3) you can see how many kW you are consuming (or regenerating) any given moment. The regen can only regenerate up to xx kW (~60 on my mX) but while accelerating you can consume much more than that, so if you frequently accelerate quickly and then decelerate, the regen can't ever make up for all of the losses
6. Ambient temperatures if the battery pack needs to be heated/cooled
7. Total weight. More passengers, heavy cargo should increase consumption
8. Stop and go. While driving in traffic should theoretically give you lower avg consumption (because of more regen and less top speed), getting the car to start moving from a complete stop takes a lot of energy initially. Personally I also think the A/C consumption overall is higher the longer you're driving, so slower speeds = more A/C consumption as % of total consumption
They had told me speed is the biggest factor but I've ranked them by what I believe to be the right order
EPA rating is done going 50 mph on cruise control on a flat road with no wind and the A/C off, and under normal ambient temperature conditions (is what Tesla told me)
The sound system uses the 12V battery so shouldn't affect consumption much.
There's a website called A Better Routeplanner where, among other things, they estimate some of these factors on top of just rated mileage into your trip planning
Things that can increase your consumption while driving:
1. Elevation changes e.g. driving uphill on average consumes more
2. Speed. The faster you go, the higher the drag. In fact if you're driving towards a supercharger while running out of battery, you'll get warning messages "please drive under 55 mph if you want to reach your destination" (and the number keeps going down !). I think the penalty is a nonlinear one.
3. Windy conditions (if driving against the wind
)4. Air Conditioning and heater usage. (In my car, heater seems to consume more than A/C cooling). If you call Tesla and ask, they are actually tracking consumption of your car separately for driving vs. A/C/heating
5. Spirited driving. When you turn on your energy consumption meter (I think it's on by default on M3) you can see how many kW you are consuming (or regenerating) any given moment. The regen can only regenerate up to xx kW (~60 on my mX) but while accelerating you can consume much more than that, so if you frequently accelerate quickly and then decelerate, the regen can't ever make up for all of the losses
6. Ambient temperatures if the battery pack needs to be heated/cooled
7. Total weight. More passengers, heavy cargo should increase consumption
8. Stop and go. While driving in traffic should theoretically give you lower avg consumption (because of more regen and less top speed), getting the car to start moving from a complete stop takes a lot of energy initially. Personally I also think the A/C consumption overall is higher the longer you're driving, so slower speeds = more A/C consumption as % of total consumption
They had told me speed is the biggest factor but I've ranked them by what I believe to be the right order
EPA rating is done going 50 mph on cruise control on a flat road with no wind and the A/C off, and under normal ambient temperature conditions (is what Tesla told me)
The sound system uses the 12V battery so shouldn't affect consumption much.
There's a website called A Better Routeplanner where, among other things, they estimate some of these factors on top of just rated mileage into your trip planning
Nah, think it just continues to drain every day. I've never had it over 90%. Either way, it's way off, not just by 1-2%.
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