Douglas Guardian DG12-18J 12V 18Ah UPS Battery — AJC Brand Replacement

Product overview: AJC® replacement for the Douglas Guardian DG12-18J UPS battery. Designed as a drop-in substitute with the same electrical and physical specifications as the original unit. Specifications: - Voltage: 12V (12 Volts) - Capacity: 18Ah - Terminals: NB - Chemistry: Sealed Lead Acid (AGM) - Dimensions: 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 Douglas Guardian. Why choose AJC® replacements: - High-quality, cost-effective replacements suitable for thousands of devices. - Manufactured to match OEM form, fit, and function so installation is straightforward. - Millions of batteries sold worldwide. - UL recognized component. - Comes with easy 30-day returns and a 12-month warranty. SLA battery care tips: - Recharge the battery after each use to avoid reduced performance. - Do not allow the battery to become fully discharged. - Inspect terminals periodically for corrosion or wear that could lead to failure. - Store batteries fully charged when not in use. - Keep stored batteries in a cool, dry place (68°F/20°C recommended). - Recycle used batteries properly; do not dispose of them in household trash.