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The RB1290X3L UPS Replacement Battery Cartridge restores life to CyberPower UPS systems that have weak or completely depleted internal batteries. The RB1290X3L contains one 12V/9AH battery, certified to meet or exceed original manufacturer specifications. This leak-proof, sealed lead-acid battery never requires replacement fluid. The pre-assembled cartridge installs easily in your CyberPower UPS system and is shipped with reusable packaging for delivering expired batteries to a suitable recycling center. The RB1290X3L comes with instructions, recycling information, and an eighteen-month warranty.
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 3 years
- Limited Warranty period (labor): 3 years
- Read full details
Return Policies
- Contact Manufacturer for Assistance
- This item is covered by Newegg.com's Manufacturer Warranty Only Return Policy.
- Read full return policy for details.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-877-297-6937
- Support Website
- View other products from CyberPower
The CyberPower RB1290X3L is a pre-assembled, user-replaceable sealed lead-acid battery cartridge for restoring backup power in compatible CyberPower OL1000RTXL2U and OL1500RTXL2U UPS systems. It suits owners replacing weak or depleted internal batteries.
Recommended For
- Owners of a CyberPower OL1000RTXL2U or OL1500RTXL2U whose UPS reports a weak or depleted battery and needs its compatible replacement cartridge.
- IT or server-room operators maintaining an existing OL1000RTXL2U or OL1500RTXL2U who want to replace the battery cartridge rather than replace the UPS.
- People servicing a compatible UPS who prefer a preassembled, user-replaceable sealed lead-acid cartridge over sourcing and assembling individual batteries.
- BP36V60ART2U owners replacing its battery set, provided they also obtain the required RB1290X3R cartridge.
Real-World Use Scenarios
- When a compatible OL1000RTXL2U or OL1500RTXL2U reports weak or depleted batteries, replace its cartridge to restore battery backup instead of continuing to rely on a UPS with reduced backup capability.
- For a rack supporting servers or networking equipment, replacing a worn cartridge helps the existing UPS continue providing battery backup during a power interruption; actual runtime depends on the connected load and battery condition.
- During planned UPS maintenance, a user can replace the pre-assembled cartridge in a compatible system and return the UPS to service, following CyberPower’s battery-replacement instructions and safety precautions.
- If the compatible UPS is otherwise serviceable, replacing its battery cartridge can extend the usefulness of the installed UPS rather than requiring replacement of the entire unit.
- When servicing a BP36V60ART2U extended battery module, this cartridge is one required part; the module also requires the matching RB1290X3R, so the RB1290X3L alone is not a complete replacement for that module.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Replacing depleted batteries in compatible CyberPower OL1000RTXL2U and OL1500RTXL2U UPS systems; BP36V60ART2U compatibility also requires the RB1290X3R |
| Battery Type And Configuration | Sealed lead-acid, user-replaceable battery configuration rated at 12V/9Ah, with 3 batteries |
| Battery Life | Average battery life is 3 years |
| Dimensions And Weight | 7.6 × 13.1 × 3.2 inches; weighs 18 lb |
| Model Identifiers | CyberPower RB1290X3L replacement battery cartridge |






