AJC Replacement for ADT 420615 — 12V 18Ah SLA (AGM) Alarm Battery

Overview: AJC® replacement battery compatible with ADT 420615. This sealed lead acid (AGM) unit provides 12V (12 Volts) output and 18Ah capacity for alarm and backup applications. Specifications: - Voltage: 12V (12 Volts) - Capacity: 18Ah - Terminals: NB - Chemistry: Sealed Lead Acid (AGM) - Length: 7.09 in - Width: 3.03 in - Height: 6.57 in - Weight: 12.1 lbs Why choose AJC®: High-quality, cost-effective replacements designed to match OEM dimensions and fit precisely. AJC batteries are UL recognized components and have been sold in the millions worldwide. Purchase protection includes an easy 30-day return policy plus a 12-month warranty. SLA battery care: To maintain performance, recharge after each use and avoid fully discharging the battery. Inspect terminals periodically for corrosion or wear. Store the battery fully charged in a cool, dry location (68°F/20°C). Recycle used batteries — do not dispose of them in regular trash. Disclaimer: Our products are not affiliated with or authorized by ADT.