They should work...weird that it's not...what is it not doing?
Perhaps stretching the spring on the battery cap might help it seat better, but I don't know why a button top wouldn't work..very odd
Silly question though...there is an ON/OFF battery switch, is it off??
P.S. If you find the switch (which I cannot find a picture of it anywhere) can you post a picture to help others in case that was the issue