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Ridiculous battery drain, this can't be right?
- Thread starter BittermanAndy
- Start date
Thanks. I just got the car and dropped it off and have no idea about all these stuffs.
This is no different that if you had a desktop PC running off of your car's battery all the time. With sentry, the computer is on, the cameras are on, and image processing is running. As others have pointed out, Sentry consumes about a mile of range per hour... so if you really intend to leave it on 24/7, you're going to "lose" 24 mi of range every day to do that.
And at about 250W and the national average electricity rate ($0.13/kWh), Sentry costs about you about $0.0325 per hour to have sentry on... that's just under $0.80/day
Also, sentry turns off if you batt drops below 20%
SupraDude
Member
AlanSubie4Life
Efficiency Obsessed Member
While driving, no, not in any significant way. When you're driving the computer is on anyway so you already have that overhead.
Wooloomooloo
Member
He's in the UK, so the cost is more like 15 pence per kW/Hr. Let's do that math again:
15 pence per kW/h. Divide by 1000 and then *250 for hourly rate, then multiply by 24 is 90 pence a day. That's 27 GBP per month for standing still or a little over $30.
Another way to look at it is it's the equivalent of a 90% charge each month or almost 10% overhead on someone doing 20k miles a year.
It's still a lot cheaper than petrol, but it does eat into the savings Tesla claim you get from switching quite considerably. That's the point he was making.
TimothyHW3
Active Member
Since op is not responding I would suggest to redirect him to the other 5-10 posts on the subject. I think it is time to have a mamuth post where we explain the basics of EPA rated miles.
OP, if you want to understand what is going on with the car, please read the forum. Here is a good start and you can move from there to the other posts I commented on.
Lost 40 miles range on a 11mile regular journey?? New Model 3
OP, if you want to understand what is going on with the car, please read the forum. Here is a good start and you can move from there to the other posts I commented on.
Lost 40 miles range on a 11mile regular journey?? New Model 3
davewill
Active Member
Wouldn't think so since it needs to run the computer and cameras for all the regular safety systems in the car.
garth_angst
Member
Did you see Ferris Beuler's Day Off?
Definitely not flooring it, driving it like it's on eggshells at the moment, it's all brand new! Mainly rainy but not too cold.
Well, since Sunday evening when I unplugged (so 96 hours or so?), I've driven to work and back three times - 90ish miles of driving. Battery dropped from 281 miles to 40 miles, and I've now plugged in (from now on I'll plug in most nights). That's crazy high compared to what I was expecting.
A bunch of people on this thread seem to be trying to talk down to me about this (I've largely avoided responding to that kind of rudeness directly). The only talk about range online is how Tesla have solved the "range problem" of EVs. But... I've just got 90 miles out of a full charge. That is not what I was led to believe in advance.
OK, I can turn off Sentry Mode except when I need it, but when is "when you need it"? I won't know in advance when someone intends to bump into my car while parking, or break in, or...
Happily, at home, I can do this. When, say, I visit my parents over Christmas, I'll be staying with them for a week and I'll want Sentry Mode on as it'll be parked at the side of the road. Effectively that's not a realistic option. I thought it would be.
Thanks for the suggestions, very useful.
Another way to look at it: Running Sentry Mode 24/7 would increase energy use by 80% for a typical 10k-mile-per-year driver.
Yeah, that's about what I'm looking at I guess. This is not widely discussed.
Yeah, exactly this. And to emphasise, this is all quite unexpected to me as a new owner. There might be other threads on this subject here, but that's out of thousands on the forum so pardon me to those who thought it fun to criticise me for missing them. And the news sites and blogs don't seem to mention it - go check them out now, they'll all have something on there about "SENTRY MODE CATCHES VANDAL" and nowhere in that article will it say "by the way, if you actually use Sentry Mode, you'll run out of battery three times as quickly". Again, some here are talking like I should just magically know that somehow. Well, I didn't.
I guess now I do.
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davewill
Active Member
Wet roads will significantly degrade efficiency. I'd suggest using the energy screen to see how your efficiency is at different parts of your commute. I feel that you can find your way to getting closer to the rated range.
Ive had the exact same issue bought the car this weekend had 260 miles drove 30 miles gone down to 146 miles yes i do have sentry mode on I have to have it on its different in uk lost extra 84 miles in 2 days if this is the case might have to invest in dash cam but it wont cover all three ends can anyone help
TimothyHW3
Active Member
Well, your fossil car never had sentry on, did you suffer from it? Sentry mode uses the cameras and sensors While parked and will drain your battery. You can have the dash cams on, but disable sentry, these are two separate things. As for lost range, there have been many discussions, you can read my posts and comments. Drive with chill on, AC disabled and HVAC set to manual blowing, and don't do crazy accelerations and you will get more miles than rated(I do)
And if you want to understand phantom drain while parked have a look here
Tesla Model 3 Vampire Drain (aka loosing mileage when stationary)
And if you want to understand phantom drain while parked have a look here
Tesla Model 3 Vampire Drain (aka loosing mileage when stationary)
Thanks will have a look but switching everything off ? If I checked my diesel car on app it does not drain any battery and dash cams no battery lost so sentry mode should not be draining battery like mad we should be able to challenge these ice cars at the moment am losing with my sons car he gets better range hence more money for charging and no I don't want to drive like learner .I never expected all this I hope tesla fixed quickly
There is really nothing to "fix" . The car did not even ship with sentry mode. it was added after the fact to help address window break ins. Your diesel car did NOT have "sentry mode". If it did, point out which car you had. It might have had a dash cam that you added after market, hooked up to the battery.
If you didnt "drive like a learner" your diesel car likely didnt get its rated miles ei
as people have said, sentry mode drains an average of 1-2 miles PER HOUR. So, 24-48 miles PER DAY. If you "have to have it on" then you will either need to deal with that drain, or buy an after market dash cam. I would not expect it to get much better, because the sentry mode does not let the car sleep, so all systems are awake.
Dont expect it to get significantly better., so plan accordingly.
If you didnt "drive like a learner" your diesel car likely didnt get its rated miles ei
as people have said, sentry mode drains an average of 1-2 miles PER HOUR. So, 24-48 miles PER DAY. If you "have to have it on" then you will either need to deal with that drain, or buy an after market dash cam. I would not expect it to get much better, because the sentry mode does not let the car sleep, so all systems are awake.
Dont expect it to get significantly better., so plan accordingly.
jerseygirl18
jersey girl
jerseygirl18
jersey girl
since it appears you are quite knowledgeable on the sentry mode...i have a question.
what exactly does sentry do ..i have no USB loaded so i'm just wondering. Thanks in Advance
jerseygirl18
jersey girl
yes good info, but is there an internal flash drive OR does one have to add that optionally?
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