Hello, Asking in another thread about Jupiter 9 lens, you nice people recommend me to get camera for that lens instead EOS adapter. So, I got one Zenit TTL two days ago, on flea market, with standard Helios 58mm/f2 lens. For 20 USD. But, there is no battery in it. So, my question is, which type of battery goes in that Zenit, or where to find manual for it. Any of those responses will solve my question. I know how to work with Zenit (this one and I worked with one few years ago), so manual is not must. Camera is in perfect working condition, even in very nice cosmetic condition, so battery type in only issue I need to solve. Thank you.