AJC Replacement for Simplex 20819275 — 12V 18Ah Alarm Battery (Sealed Lead Acid AGM)

Product overview: AJC replacement for Simplex model 20819275 — a 12V (12 Volts), 18Ah sealed lead acid (AGM) battery tailored for alarm and backup applications. This unit is built as a drop-in replacement to match OEM fit and performance. Technical 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 replacements: AJC offers cost-effective, high-quality replacement batteries compatible with thousands of devices. These batteries are manufactured to meet OEM dimensions and installation requirements so they fit precisely. Millions of AJC batteries have been sold worldwide, and this product is a UL recognized component. Purchase protection includes simple 30-day returns and a 12-month warranty. Care and storage tips for SLA/AGM batteries: - Recharge after each use to maintain capacity and extend service life. - Avoid fully discharging the battery whenever possible. - Inspect terminals occasionally for corrosion or other wear that could lead to failure. - Keep the battery fully charged during long-term storage. - Store in a cool, dry location (68°F/20°C recommended). - Recycle used batteries properly; do not dispose in regular trash. Disclaimer: Our products are not affiliated with or authorized by Simplex.