GP CR-V9 / 6FR61 / 9V E-Block Lithium Batterij (1 stuk) GP 123accu.nl
Amazon.com: EBL 4 Pack 1200mAh 9V Lithium Batteries, Non-Rechargeable Batteries - High Performance 9 Volt Lithium Metal Battery Longer Lasting Constant Volt for Smoke Alarm Detector : Health & Household