Hi everyone, I want to ask if battery degradation is higher than what I expected.
I own a Euro spec (Belgium) Tesla Model Y 2022, made in China. I charge it mostly at home, around 99% of the time. I keep my charge limited to 80% and charge every 3 to 4 days.
I have regen set to max and use DC fast charging about once every 3 to 4 months, which isn’t very often. In the past 2 years, I’ve charged to 100% maybe 3 times.
I also might put it on climate control; where I live, summer temperatures reach 35-40°C (95-104°F) and winter can go down to -20°C (-4°F).
Do you all notice similar ~4% degradation each year?
emma said: @MAKENA
State of health can be misread if you’re not charging correctly.
That could be true. I’m unsure about the methodology used.
If he can’t read his own owner’s manual, how does he know the difference? Haha. In 2 years, he charged to 100% 3 times with an LFP battery. It could be in trouble.
izael said: @emma
Does that really harm the battery, or just affect the display of state of charge?
Improper charging can damage a battery. If you’re down to 12% on the display, you might actually be at a real 0%. You definitely risk harming the battery. Does that make sense?
izael said: @emma
Does that really harm the battery, or just affect the display of state of charge?
It mainly affects the display. LFP batteries have a lower cell voltage, so they’re less damaged at high state of charge, but they still prefer lower states of charge like any lithium-ion battery.
@abidemi
Right, but more importantly, you might be running your battery down to 0% faster than you realize. When you see 10% on your screen, it could be a real 0%. Congrats on running your battery to a real 0%. (LOL)
Mileage would be helpful info too. I’m not too familiar with Teslas, but does this model have an LFP battery? I’ve heard they need a full charge about once a week for accurate range estimates. Not sure if this affects state of health readings as well.
@diallo
Yeah, those LFP owners following the 80% rule are often ending up on the side of the road at 12% battery… They need to recalibrate how the gauges read the battery’s state of charge.
emma said: @diallo
Yeah, those LFP owners following the 80% rule are often ending up on the side of the road at 12% battery… They need to recalibrate how the gauges read the battery’s state of charge.
emma said: @diallo
Nah, he just needed to read his owner’s manual.
This is why I’m cautious about used EVs.
I’m not worried about used EVs. If you do your research before buying and maybe get a warranty, what’s there to worry about? Most manufacturers cover batteries for up to eight years now. No gas car does that for the powertrain.
@diallo
Eh, I mean yes, but you’re still taking a risk… There’s no way to check if the previous owner charged it correctly. You might have a better chance with someone who regularly changed their oil.
@emma
I’d agree more about that for PHEVs. But with EVs, getting a battery certificate and a state of health reading is usually enough. It’s not a headache.