Some time ago, my battery died, and I haven't replaced it. Now, the cover (the part that covers the battery) is also missing, and I'm not sure if I'll be able to find it. Do I need that piece to keep the battery in, or will I be able to simply replace the battery? Can I get the battery anywhere, or is it a "Polar" battery such that I'll need to contact the company?
Thank you so much to anyone who can help!