I had the same issue with them reporting low battery, replacing batteries, and have they just continue to say low battery. I followed instructions in the forum and still no go. I haven't had time to mess with them further. Unfortunately, I mounted mine in not super easy to get at places in my basement so they are a pain to mess with. I believe they batteries lasted 3 months so rather than mess with them, I'd prefer something with better battery life. It's my understanding that some early units had this problem as a bug and units were swapped for replacement.