APC RBC55 UPS battery Lead acid 816 Wh Black 24.3 kg

The APC RBC55 UPS battery is a lead acid replacement battery with a nominal energy capacity of 816 Wh designed for uninterrupted power supply systems. Its compact footprint—142 mm wide and 173 mm high—and a weight of approximately 24.3 kg make it compatible with a range of APC UPS models that accept this battery form factor. The unit is finished in black and intended to restore or extend runtime performance for supported UPS units.

Advantages

This lead acid battery provides a stable and predictable discharge profile suitable for standby and backup applications. With an energy capacity of 816 Wh it offers extended runtime compared with smaller replacement cells, while the robust construction supports safe installation and handling. The standardized dimensions simplify replacement procedures and the black housing resists dirt and abrasion in typical IT and infrastructure environments.

Suitable for

• Replacing end-of-life batteries in compatible APC UPS units
• Short-term power backup for network equipment, servers, and storage
• Maintenance and emergency power testing of UPS systems

Key specifications

• Battery technology: Lead Acid
• Energy capacity: 816 Wh
• Weight: 24.27–24.3 kg
• Colour: Black
• Dimensions (W×H approximate): 142 mm × 173 mm

How to use

Ensure the UPS is powered down and isolated according to the manufacturer's safety instructions before replacing the battery. Remove the depleted battery pack from the compatible APC UPS and install the RBC55 replacement, confirming proper seating and connector alignment. After installation, follow the UPS startup procedure and allow the system to perform any automatic battery detection and calibration routines. Dispose of the removed battery according to local regulations for lead acid battery recycling.

Usage recommendations

Store and operate the battery within the environmental limits specified by the UPS manufacturer. For longest service life, keep the battery charged when not in active use, avoid prolonged deep discharge cycles, and schedule periodic runtime tests. Use authorized replacement batteries and follow APC guidance for safe handling, transport, and recycling of lead acid batteries.