Thoth1987 wrote: ↑
Fri Oct 04, 2019 7:27 pm
Hi all, I'm a very fresh EV owner. I've had mine for about 4/5 months and have put just over 15000 kms on it so far. 2017 S 30kwh. Loving it to pieces. The temp outside has gotten to 6-12 degrees Celsius regularly over the last week here[live in BC Canada]and I've noticed my drive to work typically took about 23% to do, but now takes about 35%. Even when I used the AC and occasionally the heater for the whole trip it was still 22-25% per trip. So now instead of about 50% for the whole day it's closer to 65%. I use a level 1 charger at home so I'm going to have to use the chargers a block or 2 away from work every 2nd or 3rd day now. Really not a problem, still much better than our outrageous gas prices but I'm really curious as to why. Does a 10 degree drop in weather really cause this much power loss? It's also been raining a fair bit but ever when it's not the range is still poop. And if the temp drop is the main culprit - does that mean when it gets to -5 - -10 Celsius that it'll be even worse?
I've also got 17" winter tires on now, switched from the factory M+S 16" wheel/tire combo. Current tires are at 36psi and are just a good set of generic winter tires, nothing 'ev specific'. Could that also be a factor?
Thanks in advance
As Leftie said, since you have an S model(as do I) even using the heat sparengly it will really kill your range, a Leaf with a heat pump heater and temps you described will basically effect range similar to the A/C, IOW very little. Again like Leftie said, once you get into the single digits and colder(F) the heat pump Leaf will be basically like our S models. Moderate use of heat really kills your range when using the regular resistive heater(S model heater and heat pump heater in single-digit(F) and colder temps) even when new it made my 70 mile Leaf barely able to make 60 miles(I have the old 24 kWh battery). The more you use your heater the more it will affect your range. What I do but you really need a L2 EVSE to make it work is to preheat my Leaf whenever the temps are going to drop below say 20F. Starting out with a 80F interior lets you just use the heater while driving minimally, increasing your range, otherwise not a whole lot you can do if you like heat or even need heat to defrost your windshield.
Another thing no one touched on(well Chris did slip in before my post, while I was composing it
) were your tires, they can make a BIG difference and if you were going from very low rolling resistance(LRR) to snow tires, which are inherently much higher RR, that will also make a big difference on your range. If you had Bridgestone Ecopias(about lowest RR as you can find) and switched to a set of generic snows, that would be a BIG hit.
I personally was looking into snows for my '12SL, Michelin X-ICE3 are supposed to be somewhat low RR, nothing like Ecopias but good for snows but now I'm pretty sure I'm going to go with a good set of "winter rated"(mountain peak icon on the tire) all seasons. I like the Michelin Cross Climates but I'm also looking into the Firestone Weathergrips as I'm thinking I can get them for roughly $43USD less(per tire) than the Michelins.......so far I haven't found a good site comparing the RRs of either of these "winter rated" all seasons, that will also affect my decision but yes, tires make a BIG difference on range. Oh and lastly, I'd personally suggest near the max inflation pressure on whatever tire you get, I usually run 44psi on my Ecopias, which I believe is near max, this also helps range and I personally don't feel it affects the ride all that much.