Ultralife 9V 9V, 6LR61 Lithium Smoke Alarm Battery - 1 Pack - LITHU9VL-X at Batteries Plus
B1 hand-held Battery Smoke Machine
5pk 9V Battery | 9 Volt Heavy Duty Batteries | 6F22 PP3 Smoke Alarm Zinc Carbon 5055566990949 | eBay
Amazon.com: MGGZXR 9v Lithium Battery Rechargeable 1000 mAh, 2/Pack,9 Volt USB Rechargeable Batteries 10 Years Over 2500 Cycles for Smoke Detector Fire Alarm,Metal Detector,Multi-Meter,Garage Keypad,Ride Toys : Health & Household
These 3 9V batteries are the BEST for smoke detectors & alarms | Battery Products