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Picking Options - Twin Charging?

Finally took the plung and have my reservation number. Very excited!!!

Before I make my final options selections I was hoping to get some feedback from 60 kWh owners around true range and recharge rate.

For the most part I don't expect that I would travel more than 90 miles per day, so I opt'd for the 60 kWh battery. However, I'm trying to make the decision of whether to get the twin charging for the 1% of the times when I would have to travel >200 miles. I called some RV parks and found out that they have 220v 50amp outlets. However, my understanding is that I would only be able to use these if I had a high power connector and twin chargers.

1) Seems like most public charging stations are 30 amp? If that's true, is it everyone's experience that the recharge rate is ~23 mi/hr?
2) Is there a "mobile" high power connector that would allow me to take advantage of the 50amp draw at RV parks?
3) Does anyone have any experience/suggestions on how to get the best recharge rate when on a road trip?

If not, looks like even with twin charging I would only get the 31 mi/hr recharge rate when on road trips (not getting the supercharging option).

@Brian - Actually the second charger is $3,600 plus tax to add later, but only $1,500 (no tax for me) if ordered with the car.

Yow. Big diff.

Yup. Parts plus labor for the install. Much cheaper to have it installed while the car's being put together than to have to tear it apart all over again later! ;-)

The rep at the Tesla store told me that the price($2000) for the SC option on a 60kw model would be the same pre- or post-delivery. Was she incorrect?

I opted for the twin chargers for future possibilities, not for current needs. My roughly 30 miles per hour charge in my garage will completely charge the car overnight even if I run the batteries to their low limit. I live in the Houston area, and would take the car to Dallas, San Antonio and Austin if I was comfortable that I could pick up a few quick miles by stopping and briefly charging somewhere along the way. Currently no superchargers in Texas (hopefully some by the end of the year), but if an 80 to 100 amp charging station is within easy access of a highway, then the twin chargers will come in handy. I also thought they might have some value if I decide to sell the car sometime in the future (although I can't envision ever selling the car since I love driving it).

I have a real world driving story I'd like to share. I have a 60 and I did a LA to San Diego Trip just yesterday. On google, my total mileage from LA to SD was 160 miles. I did a max charge and ended up with 202 miles to start from my house. Started the trip in the morning and heading to SD. I usually drive about 80 mph and have the radio blasting and AC at 70 degrees. We did 1 stop for a rest room break that was right off the freeway. At one destination we got lost and probably wasted 3 miles max. The last point of the trip was to go to the Tesla Store in San Diego to charge up while we had dinner. I was supposed to have around 40 miles left when I got to Tesla but I got there with 2 miles left.

Bottom line, even the rated range in real world driving conditions won't give you the real mileage. It might if we all drove 55 but I doubt anyone really drives 55 these days. Especially in this car.

If I was to do it all over again, I would of paid the extra 10k for the 85kwh. I worked out the math and it would of been about an extra 166 a month which I definitely could of afforded. I was trying to figure what I would need at the most and 60 was plenty. But it wasn't enough for my road trip.

Worst part of this story was the end. Tesla closed at 9 and I didn't have enough energy to get home. Stopped in Irvine to charge and the GE charging station would not work. Ended up taking a taxi home and coming back the next day to charge at a car dealership @17 mph.

Moral of the story. If you can afford the payment, get the 85kwh. I wish I did.

would have
could have

The "margin of error" with a 60 is less, so your experience is not a surprise. Imagine the difference, though, as SCs become more common. Your problem may go away.

It was sort of a surprise. I'm just saying, get the biggest battery pack you can afford. The day to day use with this car is awesome. Nothing in the world like it and I love my car. Just wish I got a bigger pack.

If configured with supercharging, can you add the twin charger later and have both supercharging and twin charging?

@shilo - Yes you can but it's quite a bit more expensive to add the second on board charger (the "twin") than it is to add it during the build. All cars come with the supercharger hardware installed. It's just a software "switch" to activate it. The twin charger is actually a second onboard charger and is not on every car. You have to ask for it.

There seems to be quite a bit of confusion out there regarding the supercharger and the twin charger. Yes there is a difference folks! Do some more research on the car before purchasing!

@chicago.ev - That's a good question. I thought I read somewhere that they were charging more to turn on the supercharging after delivery but I may be wrong.


I opted both for the Twin Chargers and the HPWC and I am REALLY happy that I did. First off, I do not drive that much during the week. I typically travel between 30-40 miles/day. Well within the range of a normal charging setup. Moreover, I can charge my car at work and typically do so home charging isn't that necessary. However, I do occasionally travel far (we live in the south bay, just recently did a trip all the way up to Napa). Weekends also tend to be really busy schlepping the kids to soccer, etc.

Where the HPWC has come in super handy for me is when I need a quick charge, or when I am just stupid and forget to charge. It is 3x faster than the charging stations at work and 2x faster than the fastest setup on the mobile connector. That helps me recover range really quickly and it gives me a lot more flexibility. The other day for example, I had 90m of range. I was planning to head out from work in the afternoon for a longer trip and at 17milescharged/hr, it meant my best case scenario was that I would have 190miles after 6 hrs charging at work. I plugged my car in before taking a shower, got 45 mins of charging before heading to work, and that meant I could leave work 2.5 hrs earlier.

Key point is that HPWC enables flexibility, just like the larger battery does. I also believe that the twin chargers could be useful in the future with more model-S on the road.

Anyway, hope that helps

Smart summary.

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