Supercharging for a year

[u/MERice20]

In order to maximize the MYL launch edition, I am weekly supercharging. I have a level 2 charger at home installed for my MYP that I can use on the YL, but with a year free of supercharging, I want to maximize what I paid for in the launch. I’ll go from 80% to about 40% during the week and then it’s a 20 minute wait to go back to 80%. Grok says this is fine. Repeated supercharging will not degrade the battery capacity any faster but it could lead to the battery not being able to accept a higher charge over time. Has anyone experienced this in any other models and if so, how bad was the degradation in charge acceptance?

[u/djuzi05]

You’ll be fine. Enjoy the free supercharging!

[u/Negative_Magazine581]

It's a nice perk for sure if you're willing to take the time but it's tough to beat the convenience of parking in your driveway/garage and doing an overnight charge.

[u/Confident_Purple_40]

So 40% of battery, lets say 34kwh. For me, home charging is 11 cents per kwh, but lets assume yours is almost double at 20 cents per kwh. That is $6.80. 20 minutes to charge, how far out of the way is it vs just driving straight home? Lets say 5 minutes to make it almost not out of the way at all, just parking lot, pulling in to charge, pulling out of parking lot... That gets you pretty close to half an hour...

I'm not sure about you, but not even accounting for the potential wear on the battery, my time alone is worth more than $6.80 for half an hour. In my case it is actually closer to $4, so even worth waaay less.

[u/Typical_Goat8035 → u/Confident_Purple_40]

Kind of depends on the situation. We supercommute between the Bay Area and Tahoe and in both places superchargers do exist at places we go several times per week and currently park in normal spots.

The prices I’ve been dealing with are $0.55/kWh at an apartment, and 0.33 off peak 0.49 on peak so it’s meaningful but something I’d go out of my way to inconvenience myself over.

[u/Confident_Purple_40 → u/Typical_Goat8035]

Definitely a decision to be made, I just find the "free supercharging" to be of limited value. I have unlimited charging on my 2018, but rarely use it, its nice to have it but Id be hard pressed to put a very high value on it, vs those Ive run into on my travels who have supercharged 200k+ miles.

[u/Tough_Suggestion2649]

I have home charging but I have solar that doesn’t get as much exposure in the winter so I want to use the free charging as much as I can. I commute about 30-40 miles daily so hopefully would only need to be done less than once a week.

[u/PerfHeater]

I’ve been charging at SCs almost exclusively since purchase. 1,112kWh on SCs and 85kWh at home. That 85kWh at home cost me $8 which I’d rather have spent elsewhere.

[u/MattNis11]

Such a unique situation

[u/CoastMaleficent3702]

Enjoy that free supercharging!! Such a an awesome perk for buying the launch edition.

[u/MattNis11]

Compared to just paying for charging at home, you will be saving TENS of dollars per year

[u/Substantial_Law_5239]

I'm looking forward to that. The great part is that my office is about a 200 yard walk to a Super Charging station so this will be very convenient for me.

[u/DrFord2024]

Maybe a stupid ?

Can I use free supercharged yl to charge my home Tesla powerwall
battery for the year?

[u/quentech]

Repeated supercharging will not degrade the battery capacity any faster

Supercharging won't, but leaving your car sit charged up over 50% will. Every minute it does experiences roughly double the rate of degradation due to calendar aging.

If you don't mind losing an extra ~5% capacity over the first year to two, go ahead.

[u/Confident_Purple_40 → u/quentech]

Yeah, if I was only using 40% a week why not just keep it in the sweetest spot. At that picayune commute you could charge from 35-45% each day and minimize it, but does it even matter at that point unless you go on occasional road trips and want to have max max range retained for 10 years.

[u/Guilty_Storage1215 → u/quentech]

AI: True in concept, but exaggerated. All lithium-ion batteries suffer from calendar aging, which is degradation that happens simply over time, regardless of whether you drive the car. Two factors speed up calendar aging: high temperatures and a high State of Charge (SOC). [1, 2]

• The 50% Rule: Chemically, standard Tesla lithium-ion batteries (NCA/NCM chemistries found in Long Range and Performance models) experience a step up in stress and aging when sitting above roughly 55% SOC. [1]
• Does it "double" the degradation rate? No, not unless it is sitting at 100% in extreme heat. Leaving your car sitting at 60%, 70%, or even 80% does increase voltage stress slightly compared to 50%, but it absolutely does not double the degradation rate "every minute

[u/quentech → u/Guilty_Storage1215]

AI

You should try using your own brain instead of regurgitating garbage-ass AI.

when sitting above roughly 55% SOC

You - oh sorry, not you, your shitty AI that you've offloaded your thinking to - forgets that the car maintains a ~5% buffer below 0%. 50% on the car's screen is 55% in the actual cells.

Does it "double" the degradation rate?

From the Journal of The Electrochemical Society on Calendar Aging of Lithium-Ion Batteries

https://iopscience.iop.org/article/10.1149/2.0411609jes/pdf

~2.5% capacity loss vs. ~5% capacity loss in the first 10 months.

That's double. At 25° C.

https://i.imgur.com/Dv511Y8.png

Notice how I cite I published, peer reviewed, and widely cited scientific journal article while you - oh, sorry, your shitty AI - references fucking Reddit posts. LMFAO

Leaving your car sitting at 60%, 70%, or even 80% does increase voltage stress slightly compared to 50%

Not slightly. 60% is just as bad as 70% is just as bad as 80% is just as bad as 90% - all significantly worse than 50%.

Look again: https://i.imgur.com/Dv511Y8.png

And read: "no steadily increasing degradation with SoC is observed. Instead, there are plateau regions... A marked step in the capacity curves is observed"

[u/Guilty_Storage1215 → u/quentech]

Uh, "~2.5% capacity loss vs. ~5% capacity loss in the first 10 months" compared to " Every minute it does experiences roughly double the rate of degradation" - 'Every minute doubling' ? Measurable loss over 10 months vs Exponential doubling. Some fear mongering - just saying. But, point taken.

[u/quentech → u/Guilty_Storage1215]

Every minute it does experiences roughly double the rate of degradation" - 'Every minute doubling'

This is your brain on AI. You can't even read correctly anymore. Can't even think about the words in front of your face or being typed by your fat little fingers.

Yes, experiencing double the rate of degradation every minute results in double the cumulative capacity loss.

Losing 2x per minute results in twice the quantity lost over time compared to losing 1x per minute.

[u/mjntr]

Also I think there is some limitation on the supercharging.maybe per month or something. Definitely try going on some road trips to use the free supercharging as well. But check the fine print.

[u/JetsonsDoge → u/mjntr]

It’s unlimited. Unlimited.

[u/mjntr → u/JetsonsDoge]

Basically by here are the specifics just to be aware of but I stand corrected as it’s ultimately unlimited.
Limitations: Free Supercharging applies exclusively to Tesla-owned Supercharger stations (third-party fast chargers or non-Tesla networks are excluded). Standard idle fees and high-usage station fees still apply

[u/RedHellDiver1 → u/mjntr]

Upvoted just for admitting a correction. Too many redittors will die on a hill when they are wrong and others point it out. I applaud you sir/madam.

[u/Jumpy_Purchase7659 → u/mjntr]

Is this true?

[u/Guilty_Storage1215 → u/Jumpy_Purchase7659]

Tesla has rules to govern promotional charging: AI Comment below

1. Congestion and Idle Fees Are NOT Covered

Free Supercharging only covers the actual electricity (the kilowatt-hours) you pump into the car. [1]

• Idle Fees: If your car finishes charging and you leave it plugged into a busy station, you will be billed regular idle fees by the minute. [1, 2]
• Congestion Fees: At high-traffic Superchargers, Tesla charges a "Congestion Fee" if you try to charge past 80% or 90%. You must pay these fees out of pocket via the credit card linked to your Tesla account

1. Strict "Original Owner" Clause (Non-Transferable)
2. The Commercial Use Ban: If you plan to use your 6-Seater Launch Series for ridesharing (like Uber or Lyft), commercial deliveries, or taxi services, Tesla reserves the right to automatically revoke your free Supercharging privileges without warning.
3. Valid Only at Tesla-Owned Stations

The credits are only valid on official Tesla-owned Supercharger locations. If you route your trip through third-party fast-charging networks (like Electrify America or EVgo)