Opti BT825 / 825BT 12V 12Ah UPS Battery — AJC® Replacement

AJC® replacement for Opti BT825 (825BT) — 12V 12Ah sealed lead-acid (AGM) UPS battery engineered as a direct-fit alternative. This unit matches the original specifications for reliable power backup without modification. Disclaimer: AJC products are not affiliated with or authorized by Opti. Technical specifications: - Voltage: 12V (12 Volts) - Capacity: 12Ah - Chemistry: Sealed Lead Acid (AGM) - Terminals: F2 - Length: 5.94 in - Width: 3.9 in - Height: 3.78 in - Weight: 8.3 lbs Why choose AJC® replacement batteries: - High-quality, cost-effective replacements for thousands of devices - Exact OEM-style fit for easy installation - UL recognized component - Millions of units sold worldwide - Backed by simple 30-day returns and a 12-month warranty Care and storage recommendations: - Recharge after each use to maintain performance - Avoid fully discharging the battery - Inspect terminals periodically for corrosion or wear - Store fully charged in a cool, dry place (68°F/20°C) - Recycle used batteries; do not dispose in household waste