APC BACK-UPS ES 500VA BE500 Battery Replacement - UB1250 Universal Sealed Lead Acid Battery (12V, 5Ah, 5000mAh, F1 Terminal, AGM, SLA) - Includes TWO F1 to F2 Terminal Adapters - Walmart.com
NEW UPG UB1250 12V 5AH Universal Sealed Lead Acid Battery | eBay
12-Volt 5 Ah Sealed Lead Acid Rechargeable Battery Universal Power Group-UPG UB1250
3-Pack UB1250 Universal Sealed Lead Acid Battery (12V, 5Ah, F1 Terminal, AGM, SLA) Replacement - Compatible with Ademco 4110XM, Securitron PB2, Powersonic PS-1250 Health & Household
UB1250 (D5741) Universal Power replacement SLA Battery (12V 5AH)