Battery
Battery technology	Sealed Lead Acid (VRLA)
Features
Battery voltage	72 V
Number of batteries included	12 pc(s)
Product colour	Black
Logistics data
Harmonized System (HS) code	85044095
Total carbon footprint (kg of CO2e)	243.14
Operational conditions
Operating temperature (T-T)	-15 - 40 °C
Operating relative humidity (H-H)	0 - 95%
Packaging data
Package width	600 mm
Package height	240 mm
Package depth	800 mm
Package weight	53.1 kg
Weight & dimensions
Weight	42.5 kg
Width	438 mm
Height	86 mm
Depth	632 mm

The APC Easy UPS On-Line SRV 72V Rackmount Battery Module, type SRV72RLBP-9A, is an external battery pack for Uninterruptible Power Supplies (UPS) of the SRV series. It is designed to extend runtime during power outages and is specifically intended for the 2kVA and 3kVA Tower models with extended runtime. The module is used in rack installations and provides stable power supply for critical IT and network equipment. The battery technology is based on sealed lead-acid (VRLA), which is maintenance-free and designed for use in enclosed spaces. The total voltage is 72 V, achieved by series connection of 12 individual battery units. The module is finished in black and has a compact design with a width of 438 mm, height of 86 mm, and depth of 632 mm. The total weight is 42.5 kg.

Applications
This battery module is intended for professional applications in data centers, server rooms, and IT infrastructures where continuous power supply is of high priority. It is operated indoors and must not be exposed to direct sunlight, excessive dust, or humidity. The operating temperature ranges from -15 °C to 40 °C, with relative humidity up to 95 % permitted. Adherence to these environmental conditions is crucial for battery lifespan. The ventilation openings of the module must not be blocked; a minimum clearance of 20 cm on all four sides is required to ensure proper cooling.

Functions and Equipment in Detail
The module extends the runtime of the connected UPS, enabling critical devices to continue operating during prolonged power outages. The batteries are of sealed lead-acid (VRLA) type, meaning they require no maintenance under normal operating conditions and do not suffer electrolyte loss. Battery lifespan is affected by environmental conditions such as high temperatures, poor power quality, or frequent discharges. The manufacturer recommends replacing the batteries at least every five years. When installing additional battery modules or replacing a module, all battery modules older than one year must be replaced to avoid damage to the system and injury risks.

Technology Explained Simply
This prevents leakage and allows safe installation in rack systems. The 72 V voltage is achieved by series connection of the 12 individual batteries, each with a nominal voltage of 6 V. The batteries are designed for use in stationary UPS systems and are not suitable for mobile or external applications. The warranty is two years, and the batteries are not intended for private use in the EU.

Compatibility and Accessories
The module is compatible exclusively with the 2kVA and 3kVA Tower models of the APC Easy UPS On-Line SRV series with extended runtime. It is used as an external rackmount battery module and must be connected to a compatible UPS. Use with other UPS models or in other configurations is not intended. Installation requires adherence to safety regulations, particularly avoiding contact with liquids and ensuring sufficient ventilation.

Mounting and Installation
Mounting is performed in a rack system using the designated mounting points. Adherence to the minimum clearance of 20 cm on all sides is essential to ensure adequate air circulation. Installation should be carried out by qualified personnel familiar with battery handling. During installation, care must be taken to avoid electrical short circuits. Connection to the UPS system is made via the integrated connection cables within the module.

Operational Advantages
The module enables significant extension of runtime during power outages, increasing the availability of critical systems. The maintenance-free sealed lead-acid (VRLA) technology reduces maintenance effort. The compact design and rack mounting facilitate integration into existing IT infrastructures. High operational safety and compliance with safety regulations ensure reliable operation in professional environments. The two-year warranty provides additional security for the operator.