I had the same problem with the Apple mouse. The two AA batteries lasted about a month at best. I've had the M185 for 9 months now and it's still got the origi

I had the same problem with the Apple mouse. The two AA batteries lasted about a month at best. I've had the M185 for 9 months now and it's still got the original single AA battery in it! I threw a single AA in my bag in a ziplock in case of emergencies. I wouldn't go back to wires after that mouse.