Lithium Iron Phosphate 48V Telecom Battery Backup Rack Mounted
The SOETECK SY-Li Series Rack-Mounted 48V Lithium Iron Phosphate (LiFePO4) Battery is a high-performance, space-efficient power solution built for modern critical power infrastructure, and a superior upgrade to conventional 48V lead-acid battery banks. Optimized for 19-inch standard server rack installations, it delivers reliable performance for data centers, telecom base stations, edge computing facilities and industrial UPS systems alike.
Equipped with premium automotive-grade LiFePO4 cells and an integrated intelligent BMS, it features a 48V nominal voltage (51.2V full charge) with configurable capacities of 100Ah to 500Ah, and allows parallel expansion up to 16 units for scalable energy storage needs. With an exceptional cycle life of 4000+ cycles (80% DOD), rapid 0.5C charging that recovers 80% capacity in 2 hours, and a completely maintenance-free design, it achieves a 50% TCO reduction compared to 48V lead-acid batteries across a 10-year service life. It also delivers dramatic space and weight savings, with 60% less rack footprint and a 70% lighter profile for streamlined deployment.
Product Family
| Model | Nominal Voltage | Rated Capacity | Length | Width | Height |
|---|---|---|---|---|---|
| SY-LI-48050 › | 48V | 50Ah | 442mm | 400mm | 130mm |
| SY-LI-48100 › | 48V | 100Ah | 442mm | 400mm | 130mm |
| SY-LI-48150 › | 48V | 150Ah | 442mm | 450mm | 177mm |
| SY-LI-48200 › | 48V | 200Ah | 442mm | 490mm | 222mm |
Product Features

Intelligent BMS & Multi-Layer Safety Protection
Integrated high-precision BMS (Battery Management System) with real-time monitoring of cell voltage, current, temperature, and SOC (State of Charge). Provides multi-layer protection: overcharge/over-discharge protection (42V cut-off / 58.4V cut-off), overcurrent/short-circuit protection, overtemperature/undertemperature protection (-20°C to 60°C), and cell balancing to ensure uniform charging/discharging. Supports RS485/Modbus/CanBus communication for remote monitoring and control via central management systems.
Fast Charging & Wide Temperature Adaptability
Supports 0.5C fast charging (e.g., 50A charge current for 100Ah battery), recovering 80% capacity in 2 hours and 100% capacity in 3 hours (3x faster than 48V lead-acid). Operates reliably in extreme temperatures (-20°C to 60°C discharge, 0°C to 45°C charge), suitable for outdoor telecom base stations and harsh industrial environments. Low self-discharge rate (<1%/month at 25°C), no regular charging required during storage.

FEATURED serieS OF Power Distribution SOLUTIONS
Focus on the core power delivery demands of high-density data center deployments, where our full range of premium products leverages advanced technological advantages to reliably safeguard continuous, efficient, and stable operation.
Reliable & Cost-Effective
Basic PDUs
Robust rack-mount power distribution featuring 2.00mm thick profiles and high-purity red copper bars. Ensures low temperature rise (<3°C) and superior structural stability for general IT equipment.
Customized / 0U Vertical
Functional PDUs
Tailored for high-density environments with customized vertical 0U installation. Features high-power air circuit breakers and hot-swappable modules to support flexible and safe power expansion.
Networked / Monitored
Smart PDUs
Advanced Smart-K series for remote management. Monitors voltage, current, and energy in real-time while integrating environmental sensors (temp/humidity) to optimize PUE and ensure mission-critical uptime.
Intelligent / Centralized
Precision PDCs
Intelligent Power Distribution Cabinets designed for modular data centers. Integrates precision circuit monitoring, isolation transformers, and smart management for central power control and safety.
APPLICATIONS
From remote outdoor fields to high-density AI computing centers, our prefabricated and modular designed data center solutions deliver rapid deployment and optimal PUE across diverse industries.
FAQ
1. What is the key difference between 48V rack-mounted lithium battery and 48V lead-acid battery?
2. What is the cycle life and service life of 48V rack-mounted lithium battery?
3. What are the charging requirements for 48V rack-mounted lithium batteries?
4. How to install and expand 48V rack-mounted lithium battery systems?
5. What communication protocols does the BMS support and how to monitor the battery?
6. What applications are 48V rack-mounted lithium batteries suitable for?
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