IBM 90P4831 12V 18Ah UPS Battery — AJC® Replacement

AJC® replacement for IBM 90P4831 UPS systems. This sealed lead acid (AGM) battery provides 12V with an 18Ah capacity and is designed as a direct OEM-fit replacement. 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 Please note: Our products are not affiliated with or authorized by IBM. Why choose AJC® replacements: High-quality, cost-effective batteries suitable for thousands of applications. AJC batteries are engineered to match OEM dimensions and fit precisely. Millions of batteries sold globally. UL recognized component. Purchase is protected with easy 30-day returns and a 12-month warranty. SLA battery care tips: Recharge after every use to avoid loss of capacity and do not allow the battery to discharge completely. Inspect terminals periodically for corrosion or wear. Store the battery fully charged in a cool, dry environment (68°F / 20°C). Recycle batteries properly — do not dispose of in household trash.