I agree to that the miles shown on the dash aren’t real miles. They drop fast at the beginning and change depending on weather. This has always been true for us, even when the car was newer. Range is lower in the cold. So your assumptions about the battery life now aren’t necessarily accurate.

Anonymous wrote:

Anonymous wrote:I have a 2013 EV. The max has declined but not that much. I don’t think it will matter for local driving.

What make and model, and how many miles have you put on it? What are your charging habits? Do you try to keep the battery change in the optimal range between 50% and 80%?

2013 Leaf. I make no special efforts at all. Charge when I feel like it or when it’s low.

A friend got and older EV and after two years replaced the battery with a used battery. Was cheap!

Anonymous wrote:I'd like to buy a used EV for daily usage in the inner suburbs, for trips that are rarely more than 15 miles round-trip.

Suppose that a particular used EV now has a range of 150 miles on a full charge, and that the range when the car was new was 200 miles. So the battery has lost 25% of its capacity.

With this information, is there any way to make a guess as to the remaining lifetime of the battery? I only drive about 3K miles a year. Given this low mileage, would I even need to worry about battery life, assuming that the battery presently operates at 75% of its original capacity?

What kind of data is available that describes how rapidly (or slowly) EV batteries lose their storage capacity? Is the deterioration primarily a function of miles driven, or is it a function of years-since-production? Which of the two variables is the most important?

Is that what the dash shows? That’s just an estimate based on a number of factors including how it was driven by the previous owner. For example, if the previous owner has been driving it on the interstate at 70 mph with the ac blasting, the estimated range will drop. If you start driving around town at 35 mph with a lot of coasting and stops the estimated range will increase.

Anonymous wrote:I have a 2013 EV. The max has declined but not that much. I don’t think it will matter for local driving.

What make and model, and how many miles have you put on it? What are your charging habits? Do you try to keep the battery change in the optimal range between 50% and 80%?

I have a 2013 EV. The max has declined but not that much. I don’t think it will matter for local driving.

I don't have EV but if my iphone has 75% of capacity left, i'd not get that. i thought EVs use Li batteries too?

Anonymous wrote:If you Google your question, like I just did, you will find a wealth of information from reputable sites.

OP here. I did a search before I posted the question. I found very little other than manufacture's claims that a new battery is capable of "X" years and "Y" miles in total. These are little more than very rough guesses, and I don't find them very helpful. Some studies say something to the effect that there still isn't enough data to create credible estimates of battery life.

If you have located a good study, please send me the URL. Thanks in advance.

If you Google your question, like I just did, you will find a wealth of information from reputable sites.

I'd like to buy a used EV for daily usage in the inner suburbs, for trips that are rarely more than 15 miles round-trip.

Suppose that a particular used EV now has a range of 150 miles on a full charge, and that the range when the car was new was 200 miles. So the battery has lost 25% of its capacity.

With this information, is there any way to make a guess as to the remaining lifetime of the battery? I only drive about 3K miles a year. Given this low mileage, would I even need to worry about battery life, assuming that the battery presently operates at 75% of its original capacity?

What kind of data is available that describes how rapidly (or slowly) EV batteries lose their storage capacity? Is the deterioration primarily a function of miles driven, or is it a function of years-since-production? Which of the two variables is the most important?