Extreme Download Avis EXCLUSIVE
Pok Gramby
Between order and delivery, Tesla decided to change all SR+ batteries to the LFP chemistry they were using in China. I did some research and discovered they performed worse than NCA in the cold, so I contacted my sales advisor with concerns. My SA reassured me that Canada would not be getting the LFP packs, and I was satisfied. Well, come delivery day, I did get a car with an LFP pack. I was a bit disappointed, but have enjoyed it so far in the summer and fall, but I wanted to let people know how it performs in the extreme cold (eg: -40c/f), as cold weather reviews online (including Youtubers in Norway) have typically reviewed at temperatures just below freezing (0 to -10c). Now, I'm not saying that's not cold, but it's not extreme cold, so here is my judgement now after over a week at -40, due to the recent (and continuing) arctic front over much of North America.
Charging: As I don't drive that much, I am typically satisfied with Level 1 charging at home. I usually can charge 20% of my battery overnight. At -40c however, the car doesn't charge at all when I get home. So I heat my garage a bit and get the temperature just a bit above freezing, and I wait 2 or 3 hours for the battery to warm a bit, and the battery starts charging at about -5 degrees at a rate of 1kW, or 6.7km/hr. In the summer I usually get 8.2km/hr charging, but this is insignificantly different. As an experiment, I drove to the supercharger to see how it would perform, and here I had a surprise: it would not charge. With an ice-cold battery, sitting outside all day, even with a full 20 minute climate precondition (through the app) before driving, and then a 10 minute "precondition for fast charging" on the way there, the charge rate at the supercharger was zero. It drew from 3-10kW from the charger, but spent 20 minutes heating the battery to charge but it was ineffective. After 25 minutes I gave up and went home, warmed the battery in the garage, and it charged normally. So, this was a big lesson for me: the LFP battery does not charge at all when it is extremely cold. However, it is possible it may have been the charger itself, and not the car, but I would have to do further testing. The charger did appear to be functioning normally, and no errors were present. Another day I went to the supercharger with a warmish (0 deg c) battery from the garage, and it charged at 50kW before gradually slowing to 22kW. Another time, at -25C, it charged at 20kW and gradually increased to 50kW. But overall, charging speed has ranged from 55kW to "not at all." I think anyone looking to buy an EV who lives in a cold temperature climate should either make sure they have a backup ICE vehicle, avoid LFP, or plan on not doing any highway driving at all below -30C. A winter road trip is out of the question, as I would have to charge every hour for approximately an hour, meaning an 8 hour drive would take 16 hours at bare minimum... So, this is not the car for long-distance winter travel. I think it would also be inadequate if you were a taxi or delivery driver, as at these temperatures you would be unable to perform your job for long periods of time due to reduced range and long charging times.
Other things: The cold weather has created a few other little foibles that I think people should be aware of. One thing that surprised me is that the motor that moves the windows up and down struggles in the cold and partially fails. When I leave the car the windows are supposed to close up that final little bit, but somehow they move down which leaves the windows open. You get a "window open" alert on the app and when you press it, the windows open further. Here is a photo. Very strange behaviour. You have to go into the car and press the "window up" button on the driver door and you can hear the motor struggle as it very, very slowly closes. I have tried the "reset window" trick by rolling it all the way open/close/and open again for five seconds at a time thing, but it does not work. However, the other issues with the car in extreme cold are no different than for regular cold: disable mirror auto-fold, wipe snow off the hood especially the frunk, chip ice off the charging port, and remember to constantly clean the rear camera.
Overall I am still very happy with my car, but I wanted to just get this post out there in case anyone else from very cold climates is looking to get a Model 3 and wonders how the LFP pack performs. I would say I am still happy with it, but I would really have preferred the old NCA pack (and the faster motor it came with). But in the meantime I need to say this: if you are looking to buy one and you do not have off-street charging, especially an indoor garage for when it is -40, you are going to be in a lot of trouble. If you cannot charge your car from an extension cord, and you cannot charge it at the supercharger either, it does become a security issue. Maybe in the future when we have $/kWh billing in Canada instead of $/minute it might become feasible to leave your car at the supercharger for an hour and maybe it will get warm enough to charge, but you would be looking at being plugged in for hours, which is far too expensive under the current system. Anyway, for anyone that searches for "Tesla Model 3 LFP pack extreme cold weather performance" on Google and gets a Reddit result as the top search, I hope you find this helpful. I am absolutely still satisfied with my Model 3, but I am just lucky I have a heated garage. Take care out there.
Yes, I am extremely skeptical that the "extreme" measures taken by this device are beneficial. I think it is "extremely" likely that when someone spends $30K they expect to hear significant improvements and it is well proven we often hear what we want to or expect to hear. I will wait for further explanation, but it does raise the the "extremely" logical question about expectation bias.
If possible, can you please compare your impressions to the Innuos Statement, if you are familiar with that server too. Those two and the Pink Faun and W20 seem like the heavy hitter servers right now, however, this one truly seems the most "extreme" of the bunch.
As you can see, the bandpass allowance for this filter is extremely (pardon the pun) selective. This is fantastic if you enjoy high-contrast images of bright emission nebulae, but less useful if your imaging projects include broadband galaxies or reflection nebulae.
I have been using the L-enhance for some time with great results. The L-extreme looks great but as a fellow user of the L-enhance would you consider the L-extreme a worthwhile upgrade? I am not so sure!
The best cool/cold weather leather backpacking boots I've ever owned. Very comfortable boots from the first trip (after break-in at home) that are extremely durable too. The stiff shank can easily handle heavy loads on steep and uneven terrain.
I've got may pair before an Ibex hunt in southern Turkey 5 years ago and I've hiked many miles in them. The most extreme day was a 14-hour hike up and down mountains chasing Ibex through a rain storm (it rained 12 hours straight) and my feet were warm and dry.
On the other hand, if the intention is to use it for extreme overclocking, past experiences have shown that Kryonaut is indeed an excellent option, with no issues such as cracking or the thermal paste limiting the maximum CPU frequency with LN2.
As for the cost, Kryonaut can be found for about 12 USD for a 1g tube and Kryonaut Extreme for approximately 30 USD for 2g. These are certainly high prices and can only be justified for extreme overclocking, where a larger quantity of thermal paste will be necessary than just 1g or 2g.
The increasing importance of consumer ratings raises the question of whether people adjust for potentially fake or biased extreme opinions when judging products. Two studies tested treatments that trimmed the extremes of rating distributions. Neither removing extreme ratings while preserving the mean, nor flagging suspicious extreme ratings, nor priming individuals about review manipulation significantly affect judged product quality on average. However, judgments for specific distributions may be made less extreme by flagging or trimming. On average, it is difficult to override usage of the mean rating as the strongest proxy for product quality. When a weighted-mean model is fitted, the estimated weighting profile is hump-shaped and asymmetric. Consumers appear to discount 5-star ratings but are particularly susceptible to being misled by disingenuous 1-star ratings. The weights suggest that there is a binary bias with an inflection point at 2-stars for product ratings, meaning that any rating above this broadly sends an equally strong positive signal of quality. Further theoretical work is required to understand how people form weights for ratings, and applied work should continue to search for decision aids that could help consumers to better adjust for review bias. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
More advanced models, like AXIL GS Extreme earbuds, do things a little differently and use sound compression technology instead of simply turning off the amplifier when loud noises are detected. This allows the user to still hear all sounds in the environment around them, but reduces extremely loud noises to safe levels.
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