Lars
Well-Known Member
Best charging practices, how to maximize EV battery life.
Source: These slides were ‘snipped’ from a ZOOM meeting held by the EV Society Canada.
(https://evsociety.ca/)
The guest speaker was Dr. Jeff Dahn ( https://www.dal.ca/diff/dahn/people/jeff_dahn.html) one of most knowledgeable people in the world about EV batteries. The images summarize his presentation and will provide a guide how to maximize battery life.
Quick review:
#1 Charging frequently with short DOD (Depth of Discharge) cycles is good. Fewer deep DOD charges are not good.
#2 The makeup of the battery in your car, single crystal positive electrodes and moderate nickel content are the best. Problem: Getting this info very difficult. One would expect the sales people would know the answer but they don’t. The ICE equivalent question would be “and what type of engines can I have this car with? 4 – 6 or 8 cylinders?
#3 For long battery life if one has a Long Range EVs with high nickel content (>75N in NMC) it should be charged only to 75%.
Summary: Since one likely does not know the makeup of the battery, operating the car between 70% and 45% SOC would be ideal.


Source: These slides were ‘snipped’ from a ZOOM meeting held by the EV Society Canada.
(https://evsociety.ca/)
The guest speaker was Dr. Jeff Dahn ( https://www.dal.ca/diff/dahn/people/jeff_dahn.html) one of most knowledgeable people in the world about EV batteries. The images summarize his presentation and will provide a guide how to maximize battery life.
Quick review:
#1 Charging frequently with short DOD (Depth of Discharge) cycles is good. Fewer deep DOD charges are not good.
#2 The makeup of the battery in your car, single crystal positive electrodes and moderate nickel content are the best. Problem: Getting this info very difficult. One would expect the sales people would know the answer but they don’t. The ICE equivalent question would be “and what type of engines can I have this car with? 4 – 6 or 8 cylinders?
#3 For long battery life if one has a Long Range EVs with high nickel content (>75N in NMC) it should be charged only to 75%.
Summary: Since one likely does not know the makeup of the battery, operating the car between 70% and 45% SOC would be ideal.





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