Right.joeriv wrote:If you read the study, the conclusion:
"The final conclusion from this study is that there is a huge potential for prolonging the battery lifetime by avoiding high SOC values. Additional prolonging of the lifetime can also be reached by only charging the battery with the needed energy, using a small DOD, and to do this just before the driving. This strategic planning of the charging will limit the impact from the calendar ageing."
For those of us who use a BEV for local driving, keeping the battery at something like 30-60% SOC and charging only as much is needed to maintain this range will significantly increase battery life. It also suggests, all things being equal, the larger the battery the better.
The suggestion to charge before driving is another way of saying that letting the battery stew at a high SoC is best to avoid. This is particularly true as ambient temps increase, as the data shows.