Been following a number of threads on TMC related to best practices for charging your Tesla EV (mostly for model S and X, but would similarly apply to model 3).
Most of the key questions have been like :
a) Should I charge daily or every couple days?
b) What should i set the maximum charge level to? 90%? 70%? 50% ? ... etc
c) How low can i deplete the battery without significant long term degradation of the battery?
d) Should I connect the wall connector even if i really don't need a charge?
e) Is it better to charge in small bits many times, or just wait and do big charges?
Mostly along those lines.
So I decided to do some research, and found a deluge of information, lots of opinions, but not much in the way of actionable intelligence. Like most engineering problems, there is no simple one-answer-fits-all answer. The correct answer requires proper context. In my research i identified the following key factors impacting long term battery performance a) temperature of battery b) State-of-charge (SoC) or level of battery charge c) Depth of discharge (DoD) ... how much of battery capacity you use d) Charging voltage
Luckily Tesla has taken care of a) Battery Temparature - by actively managing the temperature/condition of the battery. They also handle d) via the on-board charging electronics.
So the one area left to Tesla owners are b) SoC and c) DoD
Optimal practices for managing these are directly related to the owners daily range requirement. So depending on how many miles you need out of your EV daily there is an 'optimal' setting you should be using to achieve the best long term battery life. I've put links to the research that underpins this (on tool page), but also have created a tool where you can specify your specific context and get a recommendation for what the best settings for you are.
Have a look and all feedback is welcome!
model3guru.com / optimal-charging
model3guru.com/optimal-charging
Most of the key questions have been like :
a) Should I charge daily or every couple days?
b) What should i set the maximum charge level to? 90%? 70%? 50% ? ... etc
c) How low can i deplete the battery without significant long term degradation of the battery?
d) Should I connect the wall connector even if i really don't need a charge?
e) Is it better to charge in small bits many times, or just wait and do big charges?
Mostly along those lines.
So I decided to do some research, and found a deluge of information, lots of opinions, but not much in the way of actionable intelligence. Like most engineering problems, there is no simple one-answer-fits-all answer. The correct answer requires proper context. In my research i identified the following key factors impacting long term battery performance a) temperature of battery b) State-of-charge (SoC) or level of battery charge c) Depth of discharge (DoD) ... how much of battery capacity you use d) Charging voltage
Luckily Tesla has taken care of a) Battery Temparature - by actively managing the temperature/condition of the battery. They also handle d) via the on-board charging electronics.
So the one area left to Tesla owners are b) SoC and c) DoD
Optimal practices for managing these are directly related to the owners daily range requirement. So depending on how many miles you need out of your EV daily there is an 'optimal' setting you should be using to achieve the best long term battery life. I've put links to the research that underpins this (on tool page), but also have created a tool where you can specify your specific context and get a recommendation for what the best settings for you are.
Have a look and all feedback is welcome!
model3guru.com / optimal-charging
model3guru.com/optimal-charging