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Single 12V 9Ah sealed lead-acid battery in plastic casing

RefurbUPS

RefurbUPS RB1290 12V 9A UPS Replacement Battery Kit

SKU CH-TNX8-PVT36

A 12 V 9 A sealed-lead-acid battery kit designed to restore runtime to compatible CyberPower UPS units

  • Product typeKit/Package
  • Product weight7
  • 12 V 9 Ah SLA battery powers compatible CyberPower UPS units
  • Single-cartridge kit simplifies swap-out without extra parts
  • Factory-fresh cells deliver reliable high-rate discharge performance
  • Step-by-step installation guide included for confident DIY replacement
  • Ready-to-ship availability minimises downtime during maintenance

Compatible 12 V 9 Ah UPS battery kit

This kit supplies one 12 V 9 Ah sealed lead-acid battery built to match the CyberPower RB1290 cartridge. It is intended for administrators maintaining CyberPower UPS units that require this specific voltage and capacity. The package arrives factory fresh and ready for immediate installation.

Sealed lead-acid chemistry runs without liquid

The absorbed glass mat design prevents leaks and allows operation in any orientation. Self-discharge remains low during storage so the cell holds charge until the next power event. Normal float charging keeps the unit ready without generating audible fan noise or measurable heat.

Kit includes illustrated replacement instructions

Terminals follow the standard F2 blade layout used by the original cartridge, so no adapter cables are required. The rigid plastic housing fits the existing battery bay without modification. Buyers needing higher capacity or a different voltage should verify their UPS specifications before ordering.

How it compares

Measured against everything we stock in UPS Replacement Batteries, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 83% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand nameCyberPower
Product lineCyberPower RB Replacement Batteries
Product typeKit/Package

Questions about this item

How do I install the 12V9A SLA battery in my UPS and what step do people often miss?

Power off and unplug the UPS, open the battery compartment, disconnect the old battery noting polarity, connect the new battery matching red to positive and black to negative, secure it, close the cover, then power on and let the UPS charge fully before relying on backup runtime.

What maintenance or replacement will the 12V9A SLA battery need later?

The sealed lead-acid battery requires no watering or routine maintenance; plan to replace it every three to five years or when the UPS reports a battery fault or reduced runtime during self-tests.

What limit appears first on the 12V9A SLA battery during sustained backup use?

Under continuous discharge the 9 ampere-hour capacity is the limiting factor; once the stored charge is depleted the UPS will shut down, so runtime is finite and determined by the connected load.

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