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
9V 600mAh Li-Ion Rechargeable Batteries 9 Volt Lithium / 280mAh NiMH Battery lot | eBay