ADT Security Alarm 804302 Battery Replacement - UB1250 Universal Sealed Lead Acid Battery (12V, 5Ah, 5000mAh, F1 Terminal, AGM, SLA) - Includes TWO F1 to F2 Terminal Adapters - Walmart.com
DIY Alarm System Battery Replacement
ADT® | Official ADT Security Smart Home Touchscreen Panel
How to change the battery in an ADT window or door sensor - The Smart Home Secrets
How to Replace the Battery in your Window or Door Sensors | ADT®