Amazon.com: EBL 9V Rechargeable Batteries NiMH Everyday 280mAh 9V Battery for Smoke Alarm Detector, 4-Packs : Health & Household
Fischer Amps 9V NIMH Accu - 300mAh – Thomann United States
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