I friggin hate design engineers! They made this remote to take a battery that is darn near impossible to find! The battery is a CR 2450N. You can get a CR 2450 at any Wal-mart, but it won't work, must be a CR 2450N. Whats worse, they even embossed the back of the remote with the wrong information, the back of the remote says replace with CR 2450. I finally found them online, had to have a minimum order of $20, so I have eight on the way.