AJC® Replacement for APC 90P4831 12V 18Ah UPS Battery

Overview: AJC® replacement battery compatible with APC 90P4831 UPS units. This sealed lead acid (AGM) battery delivers 12V (12 Volts) at 18Ah capacity with NB terminals. For a complete replacement you will need 2 batteries. Disclaimer: Not affiliated with or authorized by APC. Key specifications: - Voltage: 12V (12 Volts) - Capacity: 18Ah - Terminals: NB - Number of batteries required for full replacement: 2 - 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: High-quality, cost-effective substitutes engineered to match OEM form and fit. AJC batteries are sold worldwide in large volumes and are a UL recognized component. Purchases are supported by straightforward 30-day returns and a 12-month warranty. SLA battery care tips: Recharge after each use to maintain performance; avoid letting the battery reach a full discharge. Inspect terminals periodically for corrosion or wear. Store the battery fully charged in a cool, dry place (68°F/20°C). Recycle used batteries—do not dispose of them in household trash.