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I've had ours for little over 3 years. Total range is at 297....
65 miles we get about 290
75 miles we get about 275
80 miles we get about 260
Seems normal. You likely started at about 78kWh (if you really never saw more than 309 and really tried to get to 100% when new, then you started with a low capacity battery with closer to 75.7kWh - quite low; there were definitely owners who started over 77kWh based on screen captures posted here from SMT) so it's more like 12% from the best case, or 9.5% from your actual starting point.Had the fortunate chance to access the diagnostics briefly due to the "dynotest" bug and spotted this:
View attachment 706868
2019 AWD LR with Performance Boost - 37k miles
I assume this is a "real" reading and that any of the "balancing" methods aren't going to necessarily change this. Does anyone know if that's true?
Unfortunately that's ~9% loss so far, real world - a 100% charge sees about 280 (vs the 309 at pickup) so the numbers are about right on.
2021 M3 LR here, is it ok to leave the battery at 90% for day to day use or should I set it lower? I know I shouldn't go to 100% unless for a long trip.
And if I leave the car plugged in, it seems to drain from the battery rather than the charger and cycle battery charging. Are repeated small charging cycles a problem?
How do you see the KWh capacity? The car only reports range or percentage.id set it lower in Australia, especially in summer. i.e. 80 to 85% should be ok. In winter it doesnt matter. We get enough range here coz less heating needed and speeds are lower.
I actually hit a calibration event yesterday. Left my car sitting at 20% overnight and hit a recalibration event which took another 9km off me.
capacity went from 69.1kwh to 68.4kwh. Great. With that I am essentially having less range than model 3s with 200k kms on them on teslafi.
I guess if it continues at that rate ill be getting a new battery in a few years.
How do you see the KWh capacity? The car only reports range or percentage.
Does keeping it slightly lower reduce battery wear? So for around town 80% limit may be fine? Maybe in Canberra in winter it could use a little more.
Had the fortunate chance to access the diagnostics briefly due to the "dynotest" bug and spotted this:
View attachment 706868
2019 AWD LR with Performance Boost - 37k miles
I assume this is a "real" reading and that any of the "balancing" methods aren't going to necessarily change this. Does anyone know if that's true?
Unfortunately that's ~9% loss so far, real world - a 100% charge sees about 280 (vs the 309 at pickup) so the numbers are about right on.
Yes completely normal. In fact you are doing slightly better than averagei bought my model 3 in aug 2018. After the software upgrade I only got 316 miles when charged to 100%. Last night I got only 312 miles from 5% SOC to 100%. A 4% degradation within 10 months? Have others degraded similarly?
The hard thing with the 2170L cell is to know the "Real capacity" to start the calculation from. I dont know it the old 2170 was like that.To be fair, you started at 79.2kWh or so, so it's "only" 4%. Which is certainly not ideal in the timeframe you have experience it, and well outside the norm in that timeframe. They are estimates though, and there is in a SHORT timeframe a chance that the estimate will bounce back (though of course the overall trend will definitely be down). It can take some time to adjust back from a low CAC estimate.
Or, it's possible your initial 79.2kWh reading was optimistic, and it is just adjusting down the estimate to the "correct" value with time (hard to know without the specifics).
I think you could use 80.8kWh or something like that as a starting point instead of 82.1-marked size?(you had the E3LD, right ?)No my friend .. SMT is reading the BMS directly. That is the actual capacity of the battery. That is the actual loss.
The rated range starts decreasing once the actual capacity goes below the 100% threshold capacity. So, yes, I lost 2% rated range, but I lost 5% from the battery capacity ... and this is bad, in my opinion. If is gonna stay like this for the next 6 months or so, good ... but I highly doubt it. It is never a good sign when the battery capacity is plummeting, especially as new.
.. my quick takeaway for those of use without LFP batteries, is if we can keep shallow discharges, we can minimize deg.
Well, it's "OK" to keep it at 90%, but the data shows lower SOCs is better for less degradation.So more frequent but shallower charge cycles are best? Is it OK to keep it at 90% or should it be lower to reduce degradation?
I try not to keep it at 90% for a long time either. I will charge it to 90% at work sometimes but then I’ll use it within a few hours to get home. So when I’m at home it’s never higher than 80% sitting over night. I like to use the chargers at work as much as I can as they are free. My understanding is it is fine if you charge it to 90% (or even 100%) as long as you use it within a few hours and not let it sit for a while.Well, it's "OK" to keep it at 90%, but the data shows lower SOCs is better for less degradation.
Or in short, it makes little difference?My takeaway is that degradation at SOC of ..