Baterie Long 6V, 4,5Ah olověný akumulátor F1 - Topbattery.cz
akumulátor Alarmguard CJ6-2,8 (6V/2,8Ah)
Amazon.com: Interstate Batteries Power Patrol 6V 4Ah Fire & Security Battery (FAS0905) Sealed Lead Acid Rechargeable SLA AGM (F1 Terminal) Fire Alarms, Security Systems : Health & Household