Universal Power 6 Volt 4.5 Ah (UB645) 6V 4Ah Alarm Replacement ULTRAMAX Battery
With this battery, you can ensure that your device operates at peak performance without worrying about its condition. Ultramax NP4.5-6, 6v 4.5Ah Sealed Lead Acid - AGM - VRLA Battery. 6v 4.5ah (as 4ah, 4.2ah & 5ah).