Device Detection Major Update: Chevy Electric Vehicles - 10/11/18


We did solar and EV in unison as well. I can honestly say I can’t imagine purchasing an ICE car again.


EV’s appeal to geeks, early adopters, the environmentally conscious, and the financially savvy…with disposable income.

I strongly suspect that Sense appeals to many of the same groups. :wink:

I don’t find the correlation surprising, honestly.

On another topic, I have not yet seen either of or Volts get detected yet. Patiently waiting.


excited. still waiting for my 2017 to be detected


Monday the ELR was detected and yet today it’s back to Other? :frowning:


How about a conversion, VoltsRabbit conversion done in 1994, with Zivan K2 120V charger? I’ll bet Sense users don’t have many conversions, but that was the main thing going on 15-30 years ago. However, mine is only charging to top off the batteries once a month until I get around to fixing the balky main contactor. Another charger I have been known to use rarely is an auto-transformer (variac) with bridge rectifier. I’ll bet Sense will never identify these chargers :laughing:


One vote for the Tesla Model 3!


Another vote for model 3. I believe this should be an area of stronger focus for Sense, because as others have pointed out, there are many sense users who also have an EV and the EV is going to be one of the primary loads at the house and thus is key to realizing full utility of the Sense product. In my case 78% of my usage is unknown and the great majority of that unknown is charging the model 3.


One more thing, The link shows EV sales for 2018, it supports my desire for Model 3, but I think also likely helps create the overall priority list for EV detection when you look back in time at EV adoption.

Maybe Sense has already done this research or better…


The Volt has been around since 2011 so there’s lots of them out there still…and they have been remarkably consistent in their hardware makeup, probably offering a consistent dataset for which Sense can detect from.

I believe Tesla, on the other hand, likes to switch up their hardware quite often, so the electronic signature of many of their models may not only be different on a model to model basis, but possibly even a model AND year basis, perhaps making detection much more difficult.

That having been said, I’m still waiting for our Sense to pickup either of our Volts. Both have been charging at separate times of day for over a week now, putting around 22KW/day through our panel. Fingers crossed it picks them up soon, as needless to say our “Other” usage is putting a huge bell curve in my stats. :wink:


I think we all want our EVs to be discovered, as I’m sure Sense is aware. One month of sales does not make a sample though especially if production just kicked up. All time Volt (and bolt) was the best selling all time it makes sense to focus on that.

Personally I hope they are looking at the all time and going after number 2…

  • Leaf owner :wink:


EVs are definitely a strong focus for us, but they’re incredibly challenging devices for a few reasons (one of those reasons happen to be a lack of data, despite their growth in popularity). On top of that, they all look different so each one needs a custom detection model. This is a lot of work and is only compounded when we don’t have buckets of data like we do for refrigerators or ovens. While the model 3 may be surging in popularity, we still don’t have many online in our userbase, and without data from wide-ranging contexts, we can’t crowdsource detection models quickly. It’s also not a matter of getting a few model 3s in the office and testing them (though, can’t say I’d mind that…). We need to see them in real-life contexts, with real-life patterns of usage, and we need to see these patterns many times over. This is mostly true for all devices, but especially so for EVs.

And like @oshawapilot noted, Teslas in particular are complicated. We’re pretty good at detecting S and X, but but not all S and X due to subtle changes in the load profile over the model’s history. It’s a tough nut to crack, but we’re working on it.


Totally agree that it’s not just 2018 sales to look at!


How do you guys know how many Model 3’s you have in your database, given the difficulty in detecting them? As another person waiting for this detection, I would love to have my account flagged to test any Model 3 models against.


I’ve seen you mention this before in previous responses, as well as mentioning that the long duration/heavy draw signature also complicates detection.

Can you explain why they’re so hard to detect?

From my perspective, simply watching the live display it’s blatantly obvious when someone plugs in one of our Volts - the wattage climbs quickly but is noticeably stepped as it ramps up to the ~3.3kw our gen Volts charge at. The entire duration of the charge seems very steady. Towards the end of the charge a notable ramp-down can be easily seen on the live display, slowly but consistently ramping down to somewhere in the 1kw range, and then it suddenly kicks off.

This “signature” on both the ramp up, duration, and ramp down seem like it would lend itself towards easy detection, not difficult detection.

What am I missing?

At least on our Volts every charging cycle seems to follow that exact scenario in both cars. The only exception is if the car is charging but incomplete and someone unplugs the car to drive somewhere, in which case the consumption goes from ~3.3KW to zero in a split second.


Excited for additional EV device detection. I charge our Ford CMax Energi over 110V daily and would love for the car to be discovered.


I got a “New mystery device found” this morning and Sense suggested it may be a pump of some sort. Really had no idea what it was, but I turned on notifications to see when it was firing. Low and behold when I got home tonight and plugged in my Volt, Sense threw a push notification at me that my mystery device had turned on, and then turned off a few seconds later. A spike was indeed registered on the consumption data.

I tested a few times, and yep, it’s my Volt. But not my ENTIRE Volt - my car doesn’t even start charging until 2AM usually as per it’s programming, but apparently when doing the initial plug-in there’s a pump or something (battery/electronics cooling or heating perhaps) that runs for a few seconds right afterwards.

When my wife came home and plugged in her Volt, same thing.

So, my actual charge cycle hasn’t been detected yet, but this portion thereof has been.


Still no detection on my 2013 Volt, and I charge daily off my 240 charger.


Still nothing here yet either. It’s still detecting something when I first plug in to the EVSE, but none of my actual charging cycle yet.

1 car charging from 7PM to 10:30PM or so every night, and the second car is charging from around 1AM to 4:30AM or so.


Given the immense complexities of device detection, it’s possible that something is happening somewhere that is preventing detection in both of your cases. Or, and this is a better problem to have, Sense just still needs to see more data. I’d recommend giving it another couple of weeks and if you still have nothing, shoot a ticket to Support.


I am using a Seimens 240V charger to charge a Volvo XC90 T8. I did some basic math by watching Sense see the “other” category go up. I was kind of shocked to see how much power it uses but its stilll nice to know its something that may be able to be detected at some point.