BMS and why you should set display to %

So I own a Model 3 P , a year of ownership,  25000 kms done.

Like everyone at the begining i was worrying on max range displayed, and how it was going down.

So I decided to gather data overtime to sort it out a little, and it seems that there could be a huge difference in max SOC displayed due to outside temperature, battery temperature.  current SOC... and so on. 

I think it might help new owners, and convince them to switch to % :-)

About the data : sometimes the max SOC is 500 km, so  311 miles , and can be seen on my car as low as 231 miles too... We can see clearly that around 25°C ( 77°F ) , range is displayed around 310 miles or so, so as advertised by Tesla.

But when temp goes down, Range displayed goes down, and this is not degradation.

Screen shot last week, car in my Garage at 25°C :  max SOC displayed  311 miles : 

But now check this out: today it reads only 231 miles !!

After yesterday night ( car slept in the street ) I started charging after lunch at 10 Amps , temp  32° F :  Max SOC : 231 miles  and you can see the blue line showing battery is freezed.

Same day, after 45 minutes charging at 10 Amps ( at work)  : Max SOC : 261 miles

    Battery is warming up

Next is also BMS calibration.

I have the habit when i reach 10% SOC to let it sit a few hours like that, and then only charge it up to 90%. It helps BMS to calibrate and have a better max range display.

Hope this helped you, current owners of M3.

Not an owenr yet, but ready to place an order for a Tesla and earn some free supercharging miles? 

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Cleaner Cars from Cradle to Grave

Found an article on Forbes from 2015 already stating at that time  that as long as people are buying and driving cars, Teslas are excellent choices regarding carbon emissions. 

The article refers to a detail study comparing for example an average midsize midrange BEV with an average midsize gasoline-powered car :   it takes just 4,900 miles of driving to “pay back” !!

A very good summary is provided with this chart  :

 

Lets talk about numbers:  

1- manufacturing of a full-sized Tesla Model S rear-wheel drive car with an 85 KWH battery was equivalent to a full-sized internal combustion car except for the battery, which added 15% or one metric ton of CO2 emissions to the total manufacturing.

2-before anyone says "But electricity is generated from coal!", they took that into account too --> it's included in the 53% overall reduction.

3-what happens to the battery at end of lifecycle?  Answer: Tesla recycles it, recovering 70% of the carbon, as Umicore’s factory plants are able to recycle their batteries into completely reusable materials and substantially reduce the carbon footprint of manufacturing Lithium-ion batteries.

 

 

Convinced ? Ready to place an order for a Tesla and earn some free supercharging miles? 

--> use my refferal to order your Tesla  :  https://www.tesla.com/referral/emmanuel31121 

 

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