EEMB 4PCs er14505 3.6V AA battery 14505 AA non-rechargeable battery 2600mAh lithium batteries for gas meter alarm sensor - AliExpress
Amazon.com: 100Pack EEMB ER14250 1/2AA 3.6V Lithium Battery Li-SOCL₂ Non-Rechargeable Battery XL-050F SB-AA02 LS14250 TL-5902 TL-2150 for Dog Collar Meter Sensor Movement Monitor/Home Security System/Alarm System : Health & Household