https://electrek.co/2016/11/01/tesla-battery-degradation/ says Tesla got 500K miles before significant degradation.

Basically varies with how often you fast charge, temperature, and surprisingly with depth of discharge.

A misconception (I think) is that battery university's cycle count is always the cumulative full cycle count, when it's likely a count of partial cycles at the given depth of discharge. The chart below shows the result assuming partial cycle count. Wow, they really do mean a full or 80% cycle. So, you can get 200K+ miles out of an electric car. Dang…

http://batteryuniversity.com/learn/article/discharge_methods

https://docs.google.com/spreadsheets/d/18R2bb_8SURcnsdMu4_F4lGl29HvkHXD_QN5MCYe3bSw/edit?usp=sharing

Specifically for Spark EV, but probably pretty general.

• My manual is saying when you plug it in, leave it enough time to do a full charge?? (better for range?)
• Plug in when below 32F or above 90F. For maximum range, plug it in anyway to have batteries at optimum temperature.