Product Description
SmartLi 48V 100A Telecom Backup BMS
with Bidirectional DC-DC Converter | LiFePO4 Battery Management System
SmartLi 48V 100A Battery Management System (BMS) is an advanced telecom backup power solution integrating a bidirectional DC-DC converter and intelligent voltage boosting in a compact 3U form factor. Designed for 5G base stations, telecom shelters, and energy storage systems, it supports up to 32 parallel battery units, delivers 4800W rated output, and achieves 98.5% peak efficiency — dramatically reducing OPEX while ensuring uninterrupted power.
📡 Product Overview
This SmartLi BMS system combines a Battery Management Unit (BMU) and a Bidirectional DC-DC Converter (BDC) in one enclosure. The BMU handles voltage/temperature monitoring, SOC calculation, and communication, while the BDC enables intelligent voltage boosting, current sharing, and seamless integration with lead-acid or lithium batteries. It supports 15S and 16S LiFePO4 battery packs and provides comprehensive protection against overcharge, overdischarge, overcurrent, overtemperature, short circuit, and reverse connection.
⚙️ Technical Specifications
| Product Size | 442.6 × 129.5 × 50 mm (19-inch rack mountable) |
|---|---|
| Heat Dissipation | Natural convection (fanless, silent) |
| Working Modes | Normal mode · Charging current limit mode · Discharge current limit mode · Discharge boost mode · Maintenance mode |
| Operating Voltage | 36V ~ 60V DC |
| Rated Output Power | 4800W (bidirectional, parameter adjustable, ≤ ±2%) |
| Boost Output Setting | 54V DC (settable, ≤ ±0.5%) |
| Operating Power Consumption | ≤ 8W |
| Battery-side Static Dormancy Current | ≤ 0.2 mA |
| Voltage Detection Channels | 15 channels (single cell: 2 ~ 4.5V DC, ≤ ±10mV accuracy) |
| Current Detection Range | -180A ~ +180A (≤ ±2% accuracy) |
| Temperature Detection | 8× battery temp + 2× MOS temp + 1× ambient temp (NTC 10kΩ/3950, ≤ ±2°C) |
| Cell Balancing | Passive discharge equalization, 100mA ±20% at Vcell=3.6V |
| Dry Contact | 1 input (48V DC/1A) · 2 outputs (normally open, 48V DC/1A) |
| Heating Control | 48V DC/2A (automatic heating based on temperature threshold) |
| LED Indicators | 4× SOC + 4× status (Running, Alarming, Charging, Discharging) |
| SOC Accuracy | ≤ ±5% (per YD/T2344.1-2011) |
| Isolation Withstand Voltage | 707V DC / 500V AC |
| Data Storage | ≥100,000 historical records |
| Parallel Capability | Up to 32 units parallel with current sharing |
| Communication | RS485, CAN, optional 4G wireless, Bluetooth |
✨ Key Features & Advantages
🔋 Intelligent Voltage Boosting
Integrated bidirectional DC-DC converter enables constant voltage discharge and active current balancing. Supports mixed use of new/old batteries and seamless integration with lead-acid systems without changing original management strategies.
📈 High Efficiency & Scalability
98.5% peak efficiency minimizes energy loss. Up to 32 units in parallel expand capacity effortlessly — ideal for growing telecom sites.
🌐 Smart Monitoring & Control
RS485/CAN communication, plus optional 4G wireless and Bluetooth for remote monitoring via GUI. Real-time data includes voltage, current, temperature, SOC, and alarm logs.
🛡️ Comprehensive Protection
Overcharge, overdischarge, overcurrent, overtemperature, short circuit, reverse polarity, and module-level fire extinguishing (optional). UL/IEC-compliant safety design.
🔧 Easy Maintenance & Deployment
19-inch rack-mountable, natural cooling, fanless, silent operation. Supports multiple activation methods, forced power-off, and automatic address assignment.
💡 Long Lifespan & Cost Savings
LFP cells deliver ≥5050 cycles at 80% DOD. Smart BMS reduces routine O&M costs by 81% and saves 72% footprint compared to traditional solutions.
🔄 Three Discharge Modes
Follows system bus voltage (48V-52V with temp compensation / 48V-54V without). Enables priority discharge of lithium battery when mains fails, with settable DOD (default 90%). Seamless hybrid operation with lead-acid batteries.
Communicates with switching power supply. Constant voltage can be set from 48V to 57V, maintaining output at set value. Improves site power capacity — recommended for standalone lithium systems.
Output voltage equals battery voltage (similar to ordinary BMS). Overcurrent triggers DCDC current limiting instead of direct protection. Supports parallel connection with lead-acid batteries for synchronous discharge.
📊 Product Advantages
✅ Reliable
- Highly stable LFP cells, no fire after thermal runaway
- Cycle life up to 5050 cycles
- Multi-level BMS + module-level fire extinguishing
✅ Efficient
- Smart BMS reduces routine O&M costs by 81%
- High power density saves 72% footprint
- 98.5% peak efficiency
✅ Simple & Flexible
- Active current balance supports new/old battery mixing
- Parallel up to 32 units, automatic grouping
- Smart active voltage balance — strings of different numbers can be paralleled
📞 Customization & Support
Model: TP-BMSP48100B2-15S (15S 48V 100A BMS for Telecom)
Applications: Telecom base stations, 5G micro cells, data centers, energy storage systems
Extended Functions: Wireless 4G communication, gyroscope anti-theft, Bluetooth module, OTA upgrades
Certifications: CE, RoHS, UN38.3, YD/T2344.1-2011 compliant
We offer full OEM/ODM services. Contact our engineering team for custom voltage/current ratings, communication protocols, and mechanical integration.
Primary: SmartLi BMS · 48V telecom backup power · LiFePO4 BMS · bidirectional DC-DC converter · 48V 100A BMS · telecom base station battery · battery management system
Performance: 4800W output · 98.5% efficiency · 32 parallel units · voltage boosting · active current balance · passive equalization · CAN bus · RS485 · 4G monitoring
Applications: 5G base station · telecom shelter · energy storage system · backup power · hybrid lithium-lead-acid system · micro cell · data center UPS
