Has anyone else with an Air Dream Experienced Reduced Charging Capacity?

[momo3605]

First, the bad news: it won't work.

Now, the good news: it won't work.

One of the earlier studies of battery pack longevity in real-world use was with the fleet of 167 Tesla Model S's the Amsterdam airport acquired in 2014. The cars operated round the clock, were charged with 60kW L3 fast chargers up to 100%, and then often driven down to very low percentages. In 2018, the airport retired the fleet and switched to roomier Model X's. The retired Model S's had accumulated 155-188,000 miles on each car, and their batteries still retained over 90% of their original capacity.

It's worth remembering two things: (1) 2014 is ancient history in EV and battery management development, and (2) the engineer who oversaw the development of the battery packs and their management systems in those early Model S's was Peter Rawlinson, the CEO and CTO of Lucid.

As a few of us Air owners have learned, the battery packs can suddenly fail (as mine did in a 2015 Model S, too). But I think they're going to be very difficult to wear out.

Yea, I'm aware of the Tesla studies, and why i think it's weird that people here keep saying it's normal to lose 10% on their brand new 1yr old lucids because the fastest degradation happens in the beginning.. I'm pretty sure that number in the API is flat out wrong and not based on total capacity. Every new Touring/Pure shows 88kwh.

 

[hmp10]

. . . I think it’s a little crazy that so many people here are ok with losing 5-10% of their battery capacity on brand new cars.

. . . people here keep saying it's normal to lose 10% on their brand new 1yr old lucids because the fastest degradation happens in the beginning . . .

One year old is not exactly brand new when it comes to cars. And it has a lot more to do with mileage and charging patterns, which can vary widely between owners, than calendar age.

Also, there are people on this thread reporting lower than 10% battery degradation over longer periods periods. For example, @SaratogaLefty reported 8% loss after two years. @hydbob is reporting 9% loss on a car that is nearing the three-year mark. Remember that most studies are based on owner survey data and not direct measurements, and they reflect average losses. That seems reflected in the variance in reports on this thread.

 

[Sandvinsd]

Not sure what to make of the “test my code” results. Lucid had called me 6 weeks ago to have my Lucid Grand Touring brought in because of some voltage fluctuations. Because of that, they were going to replace the battery. My battery gave a 104.15 capacity using that program before the car was delivered to the service center. The battery was replaced and I have rerun that program. It now says the capacity is 107.96. It should have a battery capacity of 112. Does Lucid keep some of the battery capacity in reserve? Service center has charged the battery to 100%. The program says that the full battery has 105.49 kWh in it with a range of 826 km (513 miles) or about 4.86 miles/kWh. I have always used 112 kWh capacity with an EPA range of 4.6 miles /kWh for the 516 EPA range. These numbers on that testmycode.cc program thus indicate something different.

Also, if a new battery on a GT is only 108 kWh instead of 112, then it changes the degradation numbers everyone has been reporting. My 2-year old battery would have lost 7% of capacity if I use the 112 as the starting capacity, but only 3.5% if the actual number was 108.

Thoughts on all of this?

 

[segbrk]

Not sure what to make of the “test my code” results. Lucid had called me 6 weeks ago to have my Lucid Grand Touring brought in because of some voltage fluctuations. Because of that, they were going to replace the battery. My battery gave a 104.15 capacity using that program before the car was delivered to the service center. The battery was replaced and I have rerun that program. It now says the capacity is 107.96. It should have a battery capacity of 112. Does Lucid keep some of the battery capacity in reserve? Service center has charged the battery to 100%. The program says that the full battery has 105.49 kWh in it with a range of 826 km (513 miles) or about 4.86 miles/kWh. I have always used 112 kWh capacity with an EPA range of 4.6 miles /kWh for the 516 EPA range. These numbers on that testmycode.cc program thus indicate something different.

Also, if a new battery on a GT is only 108 kWh instead of 112, then it changes the degradation numbers everyone has been reporting. My 2-year old battery would have lost 7% of capacity if I use the 112 as the starting capacity, but only 3.5% if the actual number was 108.

Thoughts on all of this?

I think what we're seeing is all the trims report 4kWh less than the advertised capacity. Couldn't tell you why, but it does seem like a reserve or something. Also keep in mind we really don't even understand what that value actually is - how it's measured, what factors are accounted for, etc. We may understand it better over time, as those of us running Home Assistant are recording the value's change over time.

 

[Lucken]

Not sure what to make of the “test my code” results. Lucid had called me 6 weeks ago to have my Lucid Grand Touring brought in because of some voltage fluctuations. Because of that, they were going to replace the battery. My battery gave a 104.15 capacity using that program before the car was delivered to the service center. The battery was replaced and I have rerun that program. It now says the capacity is 107.96. It should have a battery capacity of 112. Does Lucid keep some of the battery capacity in reserve? Service center has charged the battery to 100%. The program says that the full battery has 105.49 kWh in it with a range of 826 km (513 miles) or about 4.86 miles/kWh. I have always used 112 kWh capacity with an EPA range of 4.6 miles /kWh for the 516 EPA range. These numbers on that testmycode.cc program thus indicate something different.

Also, if a new battery on a GT is only 108 kWh instead of 112, then it changes the degradation numbers everyone has been reporting. My 2-year old battery would have lost 7% of capacity if I use the 112 as the starting capacity, but only 3.5% if the actual number was 108.

Thoughts on all of this?

I agree, as I’ve said before, I don’t think anyone knows 100% what these numbers mean. Educated guess yes, 100% certainty no.

 

[Adnillien]

I think what we're seeing is all the trims report 4kWh less than the advertised capacity. Couldn't tell you why, but it does seem like a reserve or something. Also keep in mind we really don't even understand what that value actually is - how it's measured, what factors are accounted for, etc. We may understand it better over time, as those of us running Home Assistant are recording the value's change over time.

I am wondering if there is a reserve at the bottom end. Is anyone adventurous enough to drive it below zero SOC and see what the Home Assistant says for remaining range and kwhr in the battery?

 

[SaratogaLefty]

Didn't Tom Molougney do that way back with a Dream R???

 

[SM_NCarolina]

Log In - Unofficial Lucid API

What is this about?

 

[Shuasha]

Not sure what to make of the “test my code” results. Lucid had called me 6 weeks ago to have my Lucid Grand Touring brought in because of some voltage fluctuations. Because of that, they were going to replace the battery. My battery gave a 104.15 capacity using that program before the car was delivered to the service center. The battery was replaced and I have rerun that program. It now says the capacity is 107.96. It should have a battery capacity of 112. Does Lucid keep some of the battery capacity in reserve? Service center has charged the battery to 100%. The program says that the full battery has 105.49 kWh in it with a range of 826 km (513 miles) or about 4.86 miles/kWh. I have always used 112 kWh capacity with an EPA range of 4.6 miles /kWh for the 516 EPA range. These numbers on that testmycode.cc program thus indicate something different.

Also, if a new battery on a GT is only 108 kWh instead of 112, then it changes the degradation numbers everyone has been reporting. My 2-year old battery would have lost 7% of capacity if I use the 112 as the starting capacity, but only 3.5% if the actual number was 108.

Thoughts on all of this?

I'm in the same situation as you, brand new battery and it lists 108.3kWh. I didn't check before the battery replacement tho.