No they have not. My 2021 iPhone does not have triple the energy density of the 2010 iPhone.
The battery cells have improved but that is a packaging improvement, not battery improvement. Other companies are doing pouches for example. And then there is the question of cooling, do you include it in the weight calculations?
From what we know a Tesla model S in 2020 does not have triple the capacity of the model s of 2012. We only saw an increase from 85kwh to 100kwh in 2020. That is 20% increase not 300%.
Would you have been OK with GP saying 2X instead of 3X?
That is again not even close to 300% increase
I am looking at apples documentation. Not sure where you folks are coming up with your imaginary numbers.
https://web.archive.org/web/20191007202842/https://www.apple....
iPhone 3g: 4.5 Wh / 0.0335 kg = 134 Wh/kg
iPhone 11: 11.91 Wh / 0.047 kg = 253 Wh/kg
For a 1.9X improvement.
Agreed, consumers aren't seeing 3X. But they should be seeing better than 20%.
That in 2010 something dramatic happened in the battery technology world and they doubled in density overnight. Hint: No they did not.
I was pretty skeptical when Tesla announced the Semi but the trend lines are there if not on Elons over promise timeline.
I agree it will be some time before they are viable for long haul, but a lot due to charging infrastructure.
Weight is the big question mark, I am anxious to see the Tesla semi battery weight and final capacity to see how viable it is. My guess is around 10,000lbs and a megawatt-hour capacity for 500 mile range. I imagine them trying to do a structural battery to try and make up for its weight. The equivalent diesel drivetrain is under 5000lbs including engine and can have up to 2000 miles range.