axehandler wrote: ↑
Fri Sep 27, 2019 8:06 pm
The car is reporting 12 bars, 43,294 miles and was sitting at 94% charge on the dash when I took this - what does this info tell me?
The SOH is 86.84%, which means you're about to lose your first bar (~85% SOH). Overall, your battery appears healthy, as the cells are within 20mv of each other. If you want to do a full analysis, you could run the car to the Very Low Battery Warning (--- on dash) and get that same screenshot. That will show you which cells are the weakest. However, unless you're planning on opening up the battery pack and replacing them, there's not really a good reason to do that.
Anytime you do a charge to 100%, the on board charger in the Leaf will automatically balance out the battery cells. It's not something you need to do.
Because your SOH is 86.84%, this means that you've lost 14.16% of the battery capacity. Given you're in the Pacific NW with a cool climate, I suspect the car's previous owner lived somewhere hotter to cause that range loss. You could continue to track your SOH on a monthly basis to see how your battery is degrading. Keep in mind, however, that SOH varies with temperature and seasonal fluctuations, so really, you can only compare SOH on a yearly basis. Do not start freaking out if the SOH drops or rises by a few percent as it gets cold, as that trend may reverse in the spring.
In short, your car is healthy and doing well, with roughly a 15% range lost from when it was new. Drive and enjoy the car, and expect with a 20 mile commute to get at least another 8 good years out of it (probably much longer). I was able to make a 20 mile commute in the winter with the heat blasting with a 55% SOH battery pack.