Amazon.com: Tenergy Premium 9V Batteries Rechargeable High Drain 250mAh NiMH 9V Square Battery for Smoke Alarm/Detector, 4 Pack : Health & Household
Tenergy 9V Batteries 600mAh 10PCS Li-ion 9 Volt Rechargeable Batteries with 10-Slot Li-ion 9V Battery Charger for Smoke Alarm/Detector
Amazon.com: Tenergy 9V NiMH Battery, High Capacity 250mAh Rechargeable 9 Volt Batteries for Smoke Detector/Alarms, TENS Unit, Metal Detector, and More (4 Pack) : Automotive
Amazon.com: Tenergy 9V NiMH Battery, High Capacity 250mAh Rechargeable 9 Volt Batteries for Smoke Detector/Alarms, TENS Unit, Metal Detector, and More (4 Pack) : Automotive