Realistic range with an 85, and dual chargers?

Realistic range with an 85, and dual chargers?

I commute 200 miles round trip, Milwaukee to Chicago 3-5 days per week. Usual cruising speeds about 75-80mph in my ICE car. Would I be able to make this trip on the 85kwh battery?

And what about using climate control in the warm and cooler months?

Also, since I'm usually only home for 5-6 hours to sleep each night, I figure I must get the dual chargers.. The threads I've read leave me with the impression that most people aren't getting them, so are they not worth it? Should I?

Thanks guys.. sorry if these questions have been asked a million times already, I didn't see a search button to do the research on my own first.

DouglasR | June 20, 2013

On the coldest days with a warm cabin, you may want to go a bit slower or find a place to plug in at work (even 110V will help), but generally it shouldn't be a problem.

TFMethane | June 20, 2013

I get 240 miles range on my standard 85 with 19" wheels, and using the air conditioner (in a not terribly hot environment), driving 75-80 mph.
Larger wheels, cold weather, speed, reduce range.

My guess is that you would be cutting it close in the colder months due to reduced battery performance (cold reduces the efficiency of chemical reactions that power batteries). You'd probably make it every time, but it might give you a little range anxiety just before you get home.

If there is a charger of any kind at or near your work, you could charge there during the day. Even a couple hours of charging per day at work would make this trip pretty safe and comfortable. At 200 miles, you're close to the edge of reliability in extreme conditions, though. You could always just drive slower in colder months.

Also note that you would be charging your battery to "max range" (100%) every time, which would tend to shorten the life of the battery. Lithium ion batteries like to be charged around 50% for ideal performance and life. There is a $12K battery protection plan in case your battery dies at 9 years (right after the warranty period). You have to buy the protection plan at the time of purchase... no changing your mind later.

wholland | June 20, 2013

If you really have 200mi to commute, I would say you're cutting it close and definitely will have to modify your driving habits (i.e. drive slower, use less creature comforts, etc.)or be willing to stop and charge for an hour or so. 200 mi at 75 - 80 mph is iffy, even if your route is primarily flat. Throw a few hills in there and you will be having to deal with range anxiety through the whole trip. If you know the charge station locations by heart, and they are bountiful on your route, then much less anxiety.

TFMethane | June 20, 2013

clarify: a couple of hours on a standard J1772 charger would be enough. If you plugged in to 110V, you should charge it all day at work.

Docrob | June 20, 2013

My first thought is if it were me id rent a cheap apartment in Chicago and stay there during the week. However if commuting is your thing then the trip you describe is doable but will likely be tight particularly in the winter months and as the battery ages. Knock 5 miles per hour off your speed or find any sort of plug whatseover even 110v and it all becomes a breeze even in the depths of winter. With that commute you will likely save close to %10k a year on gas so even if there are a few compromises it's well worth it

froggytown | June 20, 2013

I take that trip occasionally in my S85. One trip, I charged for hours on a J1772 and only made it back to Chicago with 9 miles left. I drove 75+ most of the way. If you drive 60-65 youll have 40-50+ left.

In cold weather, Id be afraid if I didn't have a 50AMP charging option. It takes too long to charge with the others and we Midwesterners don't have superchargers yet.

Brian H | June 20, 2013

200 mi round trip commute? You a) live, or b) work in the wrong place. Pick one.

TFMethane | June 20, 2013

Give him a break, guys... He said it's 3 days/week. sometimes. He probably works at two different sites, and has reasons to stay where he's at. The consensus here is that the range for this commute is too far to be comfortable without some kind of charging option at work.

TFMethane | June 20, 2013

About the home charging. for quick turnaround, you would need to get the dual chargers ($1K extra, I believe), and a high powered wall charger ($1200, I believe), and have 100 Amp conduit run from your breaker box to your garage or driveway where you install the high-powered wall charger. That can cost you anything from a few hundred bucks (if your breaker box is in your garage) to $2500 if your breaker box is 100+ feet away and all kinds of trenching and conduit-placement have to be done).

With the HPWC, you can charge fully in about 4 hours. Anything less (like a 50 AMP Nema 14-50 dryer plug), and you won't get a full charge with that little turnaround time, so you won't make it to work.

pgiralt | June 20, 2013

Don't know exactly where, but the Supercharger map shows one going in around Milwaukee. Even a brief 10 minute stop should give you more than enough to make it back with plenty of juice to spare.

DouglasR | June 20, 2013

@TFM - I would say "without some kind of charging option at work or other compromises, particularly during the cold season."

I really think he could get by with just slowing down, particularly after they fix the vampire load problem.

TFMethane | June 20, 2013

@Doug good point. I wouldn't want to slow down on that long of a commute, though. Although the drivers' seat of my Model S is the most comfortable place in my life these days.

I need to buy a new bed.

Holyhippie | June 20, 2013

Can you charge at work and at home? If so, this sort of commute should be no problem whatsoever, even if all you can find for charging is 30A J1772 stations.

zero mpg | June 20, 2013

I live in chicago and spend a good deal of my P85 time (11,000 miles) between 65 and 90. You will not get 200 miles if you charge to 230-240 mi range. Driving *slower* in this car without some constraint like traffic would require the self control and discipline of a Buddhist monk. My best factor was .78 and at a 265 mi charge you be at 206 left without accounting for the elapsed time in chicago. As others have stated, parking garages downtown have free hookups and you can expect to recover 18-20 mi/hr. Four hours probably gets you anxiety-free return trip.

PatT | June 20, 2013

Hmm! 5 days times 200 miles times 52 weeks times 8 years -- that's further than a round trip to the moon. Yeah; buy the battery guarantee; put a NEMA 14-50 at work and you won't even need the HPWC in your garage.