Terrible battery life

We bought this monitor after much research. We live in the city and were concerned with interference from other monitors and cordless phones in our neighborhood. Although, it accomplishes that, I have hated this monitor since my son was a month old. It beeps randomly and continually. The battery runs out in less than an hour after being fully charged over night. In addition, when the electricity goes out and comes back on, like during thunderstorms, it shuts off and doesn't turn back on. Finally, I can't even stand in my front yard and have it work properly (remember I live in the city, so my yard is tiny and my son's room is in the front of the house.) I would not recommend this monitor. We put up with it for 8 months before buying another brand's monitor.