It does seem to fix the battery problem, but on my BP, there is no announcement at all when the sleep timer is set to 30 and it expires. The unit simply shuts off. It does announce when set to 5 minutes. I didn't have time to test the settings in between.=20 -- Walt Smith Technical Writer Freedom Scientific BLV 11800 31st Court North St. Petersburg, FL 33716-1805 Phone: (727) 299-6111 or (800) 444-4443 Ext. 1014 Email: WSmith@xxxxxxxxxxxxxxxxxxxxx Check out our webpage! http://www.FreedomScientific.com =20