-
Want to remove ads? Register an account and login to see fewer ads, and become a Supporting Member to remove almost all ads.
2017 Tesla model s 75d only showing 58kwh added after full charge
- Thread starter barneysbmw47
- Start date
ucmndd
Well-Known Member
ResHacker
Member
75D should have 72,6kWh usable when new. You have always substract approx 1-2kWh when normal usage (not the laboratory testing), so around 71 in real life conditions when new. Is your pack voltage top-capped to only 4,1V cell top charge level? If yes, substract another 10% of capacity. And you didn't mention your mileage, there will be for sure some degradation. I'd also say pretty normal 
done a few tests on my 2017 75d I charged from 3% to 53% to check the lower end of my battery it held 35 kWh very happy with that but its the 50 % to 100% is where the problem is .I also checked the battery health in Tessie it shows battery health 96.1% and yes before anyone asks I have my car set to charge to 100%
ElectricIAC
Good-Natured Rascal
Could be fuzzy BMS. Next time you drain it really low let it sit for a time before going to charge it so it knows where the bottom is.
Most likely you have around 62-63kWh usable based on average degradation over 5 years.
just done the same test again charged from 3% to 97% and this time my Tesla added just over 65 kWh so I am happy enough with 94 % of my capacity being just over 65 kWh.One thing I am not happy about is my charging speed drops off after 90% and takes around 2 hours to go from 90 to 99 %
ElectricIAC
Good-Natured Rascal
vcor
Tech Specialist
Also normal for all EVs with Lithium-Ion NMC-style cells. Small electric devices often ignore this and charge at full speed to 100% which is why those batteries only last a couple of years. The slow charge from 90 to 100% greatly extends the life of the battery. Also, if you don't need 100%, don't leave it at 100%. That also reduces longevity over time. Use it for long trips, but otherwise, leave the charge < 90% if you want the best battery life.
On trips, you travel the fastest by going down to low SOC at the Supercharger and then leaving at around 80% where charging slows down quite a bit.
ResHacker
Member
11kW...don't mess kWh (energy) with kW (power). But overall it seems weird as I used to have the gained SOC % pretty consistent against kWh added..
ResHacker
Member
Just use kW (kilo watts) to describe the power. And yes, this power delivers energy of 11kWh in one hour
zoomer0056
Active Member
Just use kW (kilo watts) to describe the power. And yes, this power delivers energy of 11kWh in one hour
My home wall connector charges at 11kW. The number to the right of that (0kWh since charging session just started) shows how much has been added to the battery. Tessie says to usable capacity of the battery is 92.6kWh.
Similar threads
- Locked
- Marketplace listing
