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I find that my new Model 3 is loosing about 1 mile of charge per day. I do very little driving so most of the time the car is just sitting in its underground parking stall. It's disconcerting to watch the charge drop day after day. Has anyone else measured their Model 3 charge leakage?

"Monster" is not a scientific term. Please don't use "click bait" on this forum.

Well, I vote for the smaller car, the station wagon. When I was in high school station wagons had wood paneling and were called "woodies".

What the heck is the difference between a "sports wagon" and a "SUV"?

The compact is still too big. Need to reduce it's ass.

That would depend on the retention time of the fast charging system. IF the retention time (say 8 hours) is longer than the time to charge the battery THEN that would work. Good thought.

... and do you just give away the old battery?

Thank you. I just read up on Wikipedia about "boost converters". I should have said constant power (20kW).

Sorry but I don't know anything about "boost converters". Do you mean DC to AC conversion? I thought modern converters could handle a wide range of voltages. I assumed a *constant* DC current to yield a 300 mile range from 100kWh supercapacitor.

Based on E = 1/2 CV^2 I find the capacitance necessary for an energy of 100kWh at 400V to be 4500 F. When the voltage drops to 350V the remaining energy is 76.56 kWh. A Tesla model S gets about 3 miles per kWh and its range is about 300 miles. Driving at 60 miles per hour takes 5 hours to...

They make a profit by the cost difference between supercapacitor and battery.

They still make a profit when the cost of the supercapacitor is far less than the cost of the battery. The battery is repackaged as a powerpack and resold.

My worry is the retention time which is not mentioned in any of the reports I have read. High charge and discharge rates mean nothing if the energy leaks away in a few seconds or a day.

Not the same case. Phone technology and battery technology are different. If a massively cheaper supercapacitor does hit the market then I would expect phone companies will adopt it. But a phone is far cheaper than a car so replacing the battery rather than buying a new phone does not make...

I agree with Elon. It seems that Rolls Royce, however, has stolen the show and opted to be the one to evaluate the technology.

When writing to a general audience one uses familiar benchmarks. That is not claiming the energy densities of lead acid and lithium ion are similar.

Wikipedia says for Lithium ion 100–265 W·h/kg Charge and discharge times for the supercapacitor are far greater than for battery and it is non flammable, conditions one would definitely want in an electric vehicle.

Agreed. However, Rolls-Royce is not going to accept anything that does not work. I trust that they will do rigorous testing. I would like to enlist a commitment from Elon that as technology advances Tesla will upgrade existing battery packs, at no cost to the current owner. For low cost...

Elon has done work with supercapacitors and has said they will be the future of electrical storage. The future is here now, at least according to a UK company Superdielectrics Ltd. (SDL). SDL is a spinoff of the Universities of Bristol and Surrey, UK. The claim is their dielectrics can attain...

Ah, well, since I am deaf the cars could sound like braying donkeys and I wouldn't notice!

I just spent about 10 minutes sitting in a Model 3 at the Stanford Shopping Center Tesla store. I am slightly disappointed but for some very mundane reasons. I am single and retired. The car is actually too big for me. I don't really need all that space. Secondly I hit my spine when I...

I am also interested in the iPod Touch and whether it ACTUALLY can run the Tesla app. Does any one have actual experience with an iPod Touch?

How is the invite delivered? By email or do you need to log into the Tesla site?

What phone? Not everybody has a smartphone. I am deaf and do not own a smartphone. I am hoping they implement the Tesla App on an iPod Touch.

I agree! There is a sentence "Note: In addition to smart phones, you can also pair Bluetooth-enabled devices (such as an iPod Touch, iPad, Android tablet, etc.) to stream music (see Pairing a Bluetooth Phone on page 94)." which is ambiguous without having access to page 94.

Having never used a smart phone I worry about $$. Not the purchase price but the monthly connect charges. What is the cheapest service provider? Do I even need one if all I want to do is control the Model 3?

How will one "fetch" their model 3 with a key card? Is that even possible? How will one get out of the car and let it park itself? With a key fob those are possible for the model S, but for the model 3? I do not own a smart phone (I am deaf) so will not be able to use a phone to control the...

Great posts guys! Also, still waiting ...