Information

• 12V SLA AGM | Premier OEM Replacement Battery by AJC®
• Maintenance-Free AGM Technology: No need to add acid or water, ever.
• Guaranteed to Fit: Engineered for an exact, easy installation.
• UL Recognized Component: Certified for safety and performance.
• Buy with Confidence: Backed by easy 30-day returns and a 12-month warranty.
• IMPORTANT: You MUST re-use your existing cabling and hardware. These are replacement batteries only.
• NOTE: It is your responsibility to verify the batteries being ordered match the batteries in your unit prior to purchase. We are not responsible for incorrect orders.

Disclaimer: Our products are not affiliated with, authorized by, manufactured by, or sold by CyberPower.SpecificationsFor AJC Battery Compatible with CyberPower RB1290X4K 12V 9Ah UPS Battery

• Brand: AJC® Replacement Batteries
• AJC Part #: AJC-D9S
• Replaces Part #: RB1290X4K
• Voltage: 12V (12 Volts)
• Capacity: 9Ah
• Terminal Type: F2
• Batteries Required for Full Replacement: 4
• Chemistry: Sealed Lead Acid (AGM)
• Length: 5.94 in.
• Width: 2.56 in.
• Height: 3.7 in.
• Weight: 5.8 lbs

Why You'll Love This Battery

• Unbeatable Value: Premium, long-lasting performance without the premium price.
• Perfect Fit, Zero Hassle: Exact OEM replacement designed for quick, easy installation.
• Ready to Go: Sealed AGM technology means maintenance-free—no adding water or acid, ever.
• Confidence Guaranteed: Backed by a 12-month warranty and hassle-free 30-day returns.
• Trusted Worldwide: Millions of customers count on AJC® for reliable, high-quality power.