CyberPower RB1290X4J 12V/9Ah UPS Replacement Battery Cartridge

Overview

The CyberPower RB1290X4J is a replacement battery cartridge designed to restore the runtime and reliability of compatible CyberPower UPS systems. It contains four sealed lead-acid batteries, each rated at 12 volts and 9 amp-hours, assembled into a single module for easy installation. This cartridge helps maintain uninterrupted power for critical devices such as servers, network switches, and workstations, ensuring protection against power outages and voltage fluctuations.

Key features

• Preassembled battery module that slides into place, eliminating the need to handle individual cells or cables
• Leak-proof sealed lead-acid batteries that require no fluid maintenance, reducing upkeep and risk
• Restores original factory runtime to supported CyberPower UPS models, keeping your equipment protected as intended
• Reusable packaging included to facilitate safe and responsible recycling of spent batteries
• Compact design fits easily into UPS compartments without modification
• Backed by an 18-month warranty covering materials and workmanship for added confidence

Key specs

• Battery type: sealed lead-acid
• Voltage per battery: 12 V
• Capacity per battery: 9 Ah
• Number of batteries: 4 (prewired in a single cartridge)
• Dimensions: approximately 8.2 x 2.6 x 12.4 inches
• Weight: about 24 pounds
• Warranty: 18 months from CyberPower

Installation and setup

Replacing the battery cartridge is straightforward and tool-free, as the module is designed to slide into the UPS exactly as the original did. This reduces downtime and simplifies maintenance, allowing you to quickly restore full backup power capacity without dealing with loose cables or individual battery cells.

Ideal uses and environments

This battery cartridge is well suited for environments where continuous power is critical, such as small business server closets, point-of-sale systems, and home offices with sensitive electronics. It supports UPS units that protect equipment from unexpected power loss and voltage spikes, helping to avoid data loss and hardware damage.