Actual risk to charge everyday at 100%?

[pricedm]

Been driving electric for many moons and its always been a recommendation to normal charge to 80%, but its OK to charge to 100% on road trips.
…

Yes, agree. I should have tagged OP and others with this perspective.

I did a 260 mile mountain segment recently (Denver - Winter Park- 80 miles south of Moab UT) in my 2023 Model Y. 260 miles from home to Parachute CO Supercharger via off-route Winter Park. I skipped several Superchargers as I charged to 95% at home due to distance, elevation change, and time constraints, then immediately departed after charging session.

Charging to 100% only works from a time perspective when you’re starting out for the day on a road trip. A charging session to 90%+ mid trip makes little sense, due to excessive charging time

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[CYBRTGR]

Engineering Explained YouTube channel summarized Jeff Dahn's work / results down to 13 minutes on charging limits and battery degradation. I now set my charge to 60% for daily driving but charge to 95% for trips over 250 miles.

 

[sakabaro]

> Engineering Explained YouTube channel summarized Jeff Dahn's work / results down to 13 minutes on charging limits and battery degradation. I now set my charge to 60% for daily driving but charge to 95% for trips over 250 miles.

I don't know. In the video, it's hard to believe after only 100 days of doing 100% to 0%, you have only 50% of battery capacity left.

 

[tmeyer3]

I charge it to 95 every night, I'll be taking the depreciation hit, let the next owner deal with the battery issues lol

Wow... I will now be ensuring battery degradation values are considered before appraising EVs for folks if that's the community's attitude. I've never really needed 95%+ for anything, including road trips, but I don't like sitting for 3 hours at a time either.

 

[Idrenak]

Somewhat related to this thread, Recurrent allows you to track your battery health over time. Sadly they don't support the Cybertruck (yet), but I've had it monitoring my Model Y for over a year and I like having access to the data. I generally keep mine set to 70% for daily driving, bump it to 80%-90% right before longer trips, and do have to charge to 100% occasionally (towing my camper). It plots where your battery pack health is in relation to others based on several factors including charge cycles.

https://www.recurrentauto.com/for-owners#how-does-it-work

It looks like they do now.

 

[rlhamil]

Is there a way to quantify that pull between a 80% and a 100% charge? Is it just around 20% worse or like exponentially worse?

The thing that is confusing is that we never have to worry about this for laptops and phones. Despite being the same lithium-ion technology. You charge it up to 100% and accept the battery degradation.

My Mac and iPhone and Apple Watch and even AirPods prefer to charge only to 80% or so, although one can change a setting to override that either for a day, or permanently, on most of them.

 

[TyPope]

I'm going to throw this out there: Brakes. Efficiency.

When you charge to 100%, you can't regen until the battery drops down some. So, for the first little while, you are using physical brakes instead of regen. This goes into efficiency. Those first few percentages do not travel as far as all the other percentages (weird way to say it but I think it works). You will not travel as far using the 99-100%s as you will in the mid-ranges because you are turning your momentum into heat via physical brakes rather than turning your momentum into electricity via regen.

horse beaten.

You'll also go through brake pads faster.

 

[igs]

I don't know. In the video, it's hard to believe after only 100 days of doing 100% to 0%, you have only 50% of battery capacity left.

It's 60% after 200 days at 50 degrees celsius. Misquoting is how misinformation spreads.

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