Ideal charge %?

[Killlbox]

I have the truck charging to 80% in the garage. It’s what the Tesla folks set it at when we got it.

Is that the correct number, should I change it to something else?

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[KenErickson]

Daily driving is 80%

 

[Outdoors]

Just enough to get the wife in labor to the hospital. Then to the bar, and back to hospital. That's how I calculate it. Set then forget it.

 

[Chris9702L]

Daily driving is 80%

Nope. Kyle from Out of Spec says 50% if you get away with it to prolong battery life.

 

[Killlbox]

Just enough to get the wife in labor to the hospital. Then to the bar, and back to hospital. That's how I calculate it. Set then forget it.

I am the wife and having kids is a hard pass. ?

 

[darkfyre]

Tesla has access to literally millions of data points with respect to keeping batteries healthy. If they say 80%, that's what I'm doing. Unless you are going on a trip or something. We keep our cars at 80%. Battery degradation IS a thing. But following Tesla recommendations has never steered me wrong so far.

Hope this helps.

 

[carsly]

80% is the highest recommended value for daily charging.

For battery longevity you can charge to a lower % that you're comfortable with. I find with the larger battery of the Cybertruck (compared to the Model S and Model X that I owned previously) that charging to 70% daily gives me plenty of available range. 70% x 123 kwh battery = 86.1 kwh x 3 mi/kwh actual efficiency = 258 miles of real-world daily range available.

I'll probably trim back to 60-65% for daily charging since if I'm driving 200+ miles in a day I usually know in advance. Worst case is I make a quick 10 min pit stop at a Supercharger.

The other part of this is to schedule your charging, ideally during off-peak hours with a set departure time if you have a regular schedule. For me I aim to have it finish charging by 8am daily so it typically doesn't start charging until 3-4am. Net result? The average state of charge the batteries sit at is lower for a longer period of time as it's just topping up for the day before I unplug and take off. Also helps to warm the batteries during those cold NJ winters aiding efficiency.

 

[Killlbox]

Tesla has access to literally millions of data points with respect to keeping batteries healthy. If they say 80%, that's what I'm doing. Unless you are going on a trip or something. We keep our cars at 80%. Battery degradation IS a thing. But following Tesla recommendations has never steered me wrong so far.

Hope this helps.

Thanks, that was my understanding too. There’s another thread here that mentions 50% so I got curious.

 

[SCTesla]

Thanks, that was my understanding too. There’s another thread here that mentions 50% so I got curious.

50% is the best for the longest term battery health, but 80% is the Tesla recommendation for daily use to get the most range and least battery degradation.

 

[carsly]

50% is the best for the longest term battery health, but 80% is the Tesla recommendation for daily use to get the most range and least battery degradation.

To be clear, 80% is the highest recommended value for daily driving, it is not the recommended value.

Daily charging to a lower limit, based on your use cases, will extend battery life as common wisdom seems to be that Lithium Ion cells prefer to live around 50% state of charge plus/minus. LFP (lithium iron phosphate) perform better over time when daily charged at/near 100%.

All that said, I daily charged my Model S Plaid to 80% for a year with the occasional 90-100% charge before a longer trip and I lost one mile of range in that 12 month period. The car was garaged year-round, and I'm sure that played no small part in it either.

 

[mitochondria]

100%. Battery degradation is minimal in cold climates.

 

[cybertruckwaldo]

I was doing 80% from March to about late July. I noticed that at 80% my total avail range dropped from 255 to 253 so now I only do 65% ?. I could probably get away with doing 50%-60% for daily.

I am a first time EV owner so my range anxiety was really high back in March. It has since calmed down a lot and I can admit 80% is way too much for my daily driving habits.

 

[CyberGus]

• Use the middle of the range as much as possible. Lower is better.
• Charge every day.

 

[JCERRN]

Thanks, that was my understanding too. There’s another thread here that mentions 50% so I got curious.

the 50% thing basically comes from the idea that the lower the state of charge the battery is kept at, the more cycles it can undergo without significant degradation. There was a graph i read somewhere a while ago that describe the ideal SOC of a Li Ion battery is something like 30-70% daily, the study found that batteries that were kept in that SOC range could undergo many many more cycles without significant degradation.

tesla has put a whole lot of resources into Battery Management, and so they have determined that if your goal is to achieve maximum longevity from the battery, but also maximize useful range, the best balance between the two is 80%

if you only drive like 100 miles a day however, you can further increase battery longevity (cycles before significant degradation) by keeping the battery at a lower SOC range.

hope this helps.

 

[Jow]

i do 90%

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