12 Volt 5 ah Fire Alarm Battery replaces 4ah NP4-12
Amazon.com: NPP 12V 4Ah F2 12Volt Rechargeable Sealed Lead Acid Long Life UPS Battery with F2 terminals DSC Security Panel, Power Patrol for Security Systems, Electronic Scale, Electric Toys : Automotive
Amazon.com: Yuasa NP4-12 Battery 12 Volt 4 Amp Sealed Lead Acid Battery (2) : Automotive
12 V 4 AH Sealed Lead Acid Battery SLA NP4-12 Rechargeable by GE Medical (4pc) | eBay