CyberPower RB1290X4J

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.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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