max charge vs standard

max charge vs standard

I am about 240 miles from my closest service center. Might anyone know the added range from a max charge vs a standard charge?

Darmok | March 31, 2013

In a 60 kWh battery it adds about 10%, from 190 to around 208.

shilo_js | March 31, 2013

10% added range in the 85, too.

cosmomusic | March 31, 2013

I believe the Ranger service would be a way to go if in doubt.

Tâm | March 31, 2013

Max Range:
85 kWh 265 EPA rated, 300 Ideal miles
60 kWh 208 EPA rated, 230 Ideal miles

Standard Charge:
85 kWh 240 EPA rated, 275 Ideal miles
60 kWh 190 EPA rated, ??? Ideal miles

bsimoes | April 3, 2013

My car shows that it is fully charged at 233 miles and I have the 85 kWh. 70 miles seems like a lot of cushion. Is this typical?

DouglasR | April 3, 2013

@bsimones - It's not 70 miles. If you are thinking range charge is 300+ miles, that is true only if you have "units" set to "ideal" rather than "rated" miles (Controls/Settings/Units -- or something like that). With units set to rated miles, a range charge will give you about 265 miles.

Also, your car probably gets fully charged sometime during the night, then loses rated miles by morning. If you watched it all night, you would probably see it get up to 240+ miles, which is about 90% of 265.

lov2krz | April 3, 2013

The few times I've charge to full charge (rated range) my battery shows full and 265 miles in my 85kWh MS. Since the car doesn't go to sleep it loses ~0.5 miles/hour sitting. I charge after 9pm and my morning rated range on standard charge is usually 237-240 miles on the dash.

Hope that helps.

bsimoes | April 3, 2013

DouglasR--thank you. I will go out and play around with that. I would be happier if I saw something closer to 265 vs. 230 miles. It is still cold here, dropping below freezing overnight, but I am planning a roadtrip with a bunch of friends in a few weeks, for which I will max charge it, but being there are no Chargepoints or Superchargers along the way, I'm beginning to feel a little anxiety.

bsimoes | April 3, 2013

lov2krz, you must have been typing while I was typing and sending to DouglasR. Thank you, too. The mileage is more than enough for most every occasion, but looking ahead a few weeks to the trip to Portsmouth, NH, it will be very close. I should be fine if I just charge it at max range. Once there, there is a charging station in the parking garage, so driving around and the return trip will also be fine. I appreciate your help.

DouglasR | April 3, 2013

bsimoes, one suggestion: the night before your long trip, dial back the amps so that the car's estimated time of charge completion is around the time you intend to leave (you could also charge at full amps, but just start charging later). If you dial back the amps, the car's estimated completion time is fairly accurate, although it sometimes takes 15 or 20 minutes for the estimate to zero in on the time. Use your smartphone app to check, and adjust as necessary. That way you will get all 265 miles. I have actually seen that number go above 270.

hfcolvin | April 3, 2013

Make sure you search for RV parks with 50 amp service. I use Good Sam camping on my iPhone. It would be unusual not to find 1 or 2 along any route you plan. Call before you go on your trip. I'm currently on a beach trip with the family. Arrived with 12 miles on the battery when I dropped it off at a campground 1 mile from the house we're staying in. Walked a mile along the beach back home, next morning jog back over and Voila! car fully charged!

jat | April 3, 2013

I usually get 241 rated miles with a standard charge (and the streaming API shows that as 92% state of charge), and 271 with a max-range charge. As others have mentioned, it will draw down the charge between the time it finishes charging and the morning. I continuously log the data from the streaming API, so I can see exactly when it finishes charging and what the reported range was at that point.

The state of charge percentage doesn't quite match up, but that may be based on a standard capacity value rather than what the battery actually holds.

Robert22 | April 3, 2013

Was noodling a little more about DouglasR's comment above. If given the choice of a slow all night charge at low amperage or a burst charge at higher amperage closer to morning, which will you choose? Might we eke out a slightly increased battery life after years of overnight slow charging or is that wishful thinking? Advantages to burst charging might be less susceptibility to power failures that could potentially interupt charging as well as improved readiness for potential emergencies requiring range mode driving.