OEM replacement battery RBC6-RS *compatible with RBC6*

For those who need a dependable power backup without the premium price of original cartridges, the APC RBC6-RS OEM replacement battery cartridge delivers the same core performance as the RBC6 but with a focus on value and straightforward installation. Built around two 12V 12Ah sealed lead-acid batteries wired in series, this 24V pack is a direct fit for many APC UPS models that call for the RBC6 cartridge. The absorbed glass mat (AGM) construction keeps the electrolyte immobilized, so the pack is spill-proof, leak-proof, and safe to mount in any orientation inside your UPS. Whether you are refreshing an older unit or keeping a spare on the shelf, this cartridge gives you a practical, cost-effective way to restore full runtime and protect connected equipment from unexpected outages.

Highlights

• Exact replacement for APC RBC6 cartridge – no adapter plates or rewiring needed
• 24V nominal output from two 12V 12Ah AGM batteries connected in series
• Maintenance-free, valve-regulated design eliminates watering and acid checks
• F2 spade terminals (6.35 mm) match the original wiring harness for a secure connection
• Spill-proof and leak-proof construction allows vertical or horizontal mounting
• Wide operating temperature range from -15°C to 50°C for stable performance in varied environments
• Low self-discharge rate (less than 3% per month at 25°C) keeps the pack ready during storage
• Includes both batteries, pre-wired harness, and connectors – everything needed for installation

In daily use

Once installed, the RBC6-RS behaves like any quality UPS battery: it charges efficiently, holds its capacity through repeated discharge cycles, and delivers clean, stable power when the mains fail. The AGM technology ensures that even after months of standby, the pack retains enough charge to support your equipment during brief interruptions. Because the batteries are sealed, there is no risk of acid spills or corrosive fumes, making this cartridge safe for office, home, or light industrial use. The F2 terminals accept the standard spade connectors found on most APC RBC6-compatible UPS models, so the swap is usually a matter of disconnecting the old pack and plugging in the new one. For users who prefer to replace batteries proactively every three to five years, this cartridge offers a predictable maintenance schedule and minimal downtime.

Full specifications

• Battery type: Sealed Lead-Acid (SLA), Valve Regulated Lead-Acid (VRLA) / AGM
• Nominal pack voltage: 24 V
• Nominal pack capacity: 12 Ah
• Number of cells: 2 (each 12 V, 12 Ah)
• Terminal type: F2 (spade, 6.35 mm wide)
• Maintenance: Maintenance-free
• Rechargeable: Yes
• Expected service life: 3–5 years in standby use
• Operating temperature: -15°C to 50°C (5°F to 122°F)
• Self-discharge rate: Less than 3% per month at 25°C
• Construction: Spill-proof, leak-proof
• Compatibility: APC RBC6 (Replacement Battery Cartridge #6)
• Application: Uninterruptible Power Supply (UPS) systems
• Certifications: CE, ISO9001
• Electrolyte: Absorbed Glass Mat (AGM)
• Included components: 2x 12V 12Ah batteries, wiring harness, connectors

Final note

This OEM replacement cartridge is a practical choice for extending the life of your APC UPS without compromising on safety or reliability. With its drop-in design and proven AGM chemistry, the RBC6-RS keeps your critical equipment powered when it matters most.