CYBERPOWER 

CYBERPOWER RB1290X3B REPLACEMENT BATTERY 3 X 12V/9AH BATTERIES 18-MONTH WTY

Mfg Part Number:  RB1290X3B  
Image may not reflect the actual item.
Price: $198.65 + Free Shipping
Quantity:
In Stock/Mfg Direct Ship
Last Updated: Mar 13, 2026
No Sales Tax except these states
, PO and Wire.

The RB1290X3B UPS Replacement Battery Cartridge restores life to CyberPower UPS systems that have weak or completely depleted internal batteries. The RB1290X3B contains three 12V/9Ah batteries, 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 into your CyberPower UPS system and is shipped with reusable packaging for delivering expired batteries to a suitable recycling center. The RB1290X3B comes with instructions, recycling information, and an eighteen-month warranty.

Main Specification
General Information
Manufacturer CyberPower Systems, Inc
Manufacturer Part Number RB1290X3B
Manufacturer Website Address https://www.cyberpowersystems.com/
Brand Name CyberPower
Product Series UPS Replacement Batteries
Product Model RB1290X3B
Product Name RB1290X3B Replacement Battery Cartridge
Product Type UPS Battery Pack
Technical Information
Battery Characteristics Sealed
Battery Characteristics Leak Proof/User Replaceable
Battery Chemistry Lead Acid
Battery Capacity 9000 mAh
Output Voltage 12 V DC
Environmental Conditions
Maximum Operating Temperature 104°F (40°C)
Physical Characteristics
Height 4.1"
Width 5.9"
Depth 7.8"
Weight (Approximate) 17.73 lb
Miscellaneous
Package Contents
  • RB1290X3B UPS Battery Pack
  • Installation Guide
  • Recycling Information
Additional Information
  • Battery Quantity : 3
  • Battery Size : 12 V / 9 Ah
  • Battery Type : Sealed Lead-Acid Battery
  • User Replaceable Battery : Yes
  • Physical Dimensions - (WxHxD) (cm) : 15.09 x 10.49 x 19.81 (cm)
  • Physical Dimensions - (WxHxD) (in) : 5.94 x 4.13 x 7.80 (in)
  • Physical Dimensions - (WxHxD) (mm) : 151 x 105 x 198 (mm)
  • Weight (kg) : 8.04
  • Weight (lb) : 17.73
  • Shipping Dimensions - (WxHxD) (cm) : 20.32 x 21.59 x 24.77 (cm)
  • Shipping - Dimensions (WxHxD, in) : 8.0 x 8.5 x 9.75 (in)
  • Shipping - Dimensions (WxHxD, mm) : 203.2 x 215.9 x 247.65 (mm)
  • Shipping - Weight (kg) : 4.42
  • Shipping - Weight (lb) : 9.75
  • USB Charge Port : No
  • Package Includes : Battery Kit and Installation Guide
  • Operating Relative Humidity : 0 - 90 % (non-condensing)
  • Operating Temperature : 32 - 104 °F (0 - 40 °C)
  • Models : M1100XL
  • UPS Models : M1100XL
  • Product Warranty : 18 Month Limited Warranty
    		•
    Compatibility CyberPower M1100XL UPS
    Country of Origin China
    Warranty
    Limited Warranty 18 Month
    product information
    WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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