YES. You can easily overcharge your EV battery, so you must be extremely careful during the task. There are some EVs where you can set your charging limit, which will prompt you as soon as that battery level is reached. Keeping the battery level above 90% and below 10% harms your battery in the long run. Thus, you need to be careful. The upcoming EVs will be much smarter for such tasks and will be able to handle them more intelligently.