I'm not much concerned because of where I live, ride, and park. But, if I ventured out, I'd be much more concerned because of how expensive it would be to replace the battery on my loved, reliable 6-year-old ebike, IF I were able to replace it at all. It would very possibly mean I'd have a mostly-useless, still-45-pound bike left sitting in my garage. ...I'm getting more concerned as I write...