What Are the Specifications of 19 Rack Mount Li-Ion Battery 3U 48V 50Ah?
A 19″ rack mount Li-Ion battery 3U 48V 50Ah delivers about 2.56 kWh with a compact 3-unit (133 mm) height. It features LiFePO₄ prismatic cells, integrated BMS with CAN/RS485/RS232, charge/discharge currents up to 50 A, and weighs around 25–28 kg—ideal for telecom, UPS, or energy storage racks.
How is the voltage defined for the 19″ 3U 48V 50Ah Li-Ion battery?
The nominal voltage is around 48 V (typically 51.2 V when using 16-series LiFePO₄ cells). Operating voltage ranges from 44.8 V to 57.6 V, ensuring consistent performance across charging and discharging cycles with thermal and voltage margin included.
What is the energy capacity and form factor of the battery?
The battery delivers approximately 2.56 kWh of energy and packs into a 3U rack form factor (about 300 × 133 × 428 mm), optimizing space in energy storage cabinets or telecom racks.
| Specification | Value |
|---|---|
| Energy Capacity | ~2.56 kWh |
| Rack Height (U) | 3U |
| Dimensions (mm) | ~300 × 133 × 428 |
Which cell chemistry and configuration does it use?
These batteries employ LiFePO₄ (lithium iron phosphate) prismatic cells, arranged as 16 cells in series (16S1P), balancing energy density, safety, and thermal performance.
Why does integrated BMS matter for this rack battery?
An advanced BMS is crucial—it actively monitors voltage, current, temperature, and SOC, provides protection (overcharge, over-discharge, short circuit), and supports communication via RS232, RS485, or CAN for system integration and health diagnostics.
Where can this battery be deployed effectively?
Ideal for applications like telecom backup systems, UPS cabinets, solar off-grid/storage, microgrids, and data centers where space-saving, modular energy storage is needed.
Does it support scalable and parallel installations?
Yes, units can be connected in parallel to expand capacity seamlessly. Each module comes with communication capabilities (like Bluetooth, Wi-Fi, CAN) enabling stack monitoring and management across systems.
Has safety certification and enclosure quality been addressed?
These batteries often come in rugged, full-metal enclosures with safety mechanisms like circuit breakers and conform to standards like IEC 62133, UN38.3, CE. Built for high cycle life (up to 6000 cycles) with maintenance-free operation.
Can performance be monitored remotely?
Yes, many units offer smart monitoring via Bluetooth or Wi-Fi alongside traditional RS232/485 or CAN interfaces. Mobile app or PC access allows real-time status tracking—helpful in integrated RackBattery systems.
RackBattery Expert Views
“Rack-mounted energy storage demands precision and reliability. A 19″ 3U Li-Ion battery 48V 50Ah offers compact density, smart BMS, and modular expandability—qualities essential for modern energy systems. By aligning with these specifications, RackBattery continues delivering versatile power solutions for telecom, microgrids, and backup applications.”
Conclusion
The 19″ rack mount Li-Ion battery 3U 48V 50Ah combines efficient energy density (≈2.56 kWh), compact design, LiFePO₄ safety, and smart BMS into a modular form. Its balance of performance, scalability, and reliability makes it an ideal component for RackBattery-powered systems, delivering robust and flexible energy storage for telecom, renewable integrations, and critical infrastructure.
FAQs
1. What is the weight of a 3U 48V 50Ah rack battery?
Typically ranges from 25 kg to 28 kg, depending on enclosure and components.
2. What are typical charge/discharge currents?
Standard currents are around 25 A; peak currents may reach 50 A.
3. Can multiple units be paralleled?
Yes—parallel configurations expand capacity, with each unit managed securely via BMS and communications interfaces.
4. Is remote monitoring available?
Yes—many models support Bluetooth/Wi-Fi, RS232/485, or CAN for remote monitoring.
5. What safety features are included?
Integrated BMS with protections, circuit breakers, and metal casing provide robust safety and long cycle life.


