Product Description
12V 120A 4S LiFePO₄ Smart BMS
Bluetooth & UART Communication | 120A Continuous Discharge | Over‑Temperature Protection | Optional Heating Module
The 12V 120A 4S LiFePO₄ Smart BMS is a high‑performance Battery Management System designed for 4S (12V) LiFePO₄ and lithium‑ion battery packs. With a massive 120A continuous discharge current, integrated Bluetooth and UART communication, over‑temperature protection, optional LCD display for SOC/voltage/current, support for series and parallel connections, and an optional heating module for cold environments, this smart BMS offers unparalleled control, safety, and flexibility. Ideal for solar energy storage, RVs, marine systems, golf carts, power stations, and industrial battery packs.
⚙️ Key Features
🔋 4S LiFePO₄ / Li‑ion Support
Specifically designed for 4S (12V) battery packs – compatible with both LiFePO₄ and standard lithium‑ion chemistries.
⚡ 120A Continuous Discharge
120A continuous current capability handles high‑power inverters, motors, and heavy‑duty applications – suitable for 12V systems up to 1500W+.
🌡️ Over‑Temperature Protection
Integrated thermal sensors provide real‑time temperature monitoring and automatic protection against overheating, ensuring safe operation.
📱 Bluetooth & UART Communication
Bluetooth connectivity allows monitoring and parameter adjustment via a smartphone app. UART interface enables PC configuration and integration with external systems.
📊 Optional LCD Display
An optional LCD screen can display real‑time battery data – SOC (State of Charge), voltage, current, and temperature – for easy on‑site monitoring.
🔗 Series & Parallel Support
Multiple BMS‑protected 12V packs can be connected in series (for higher voltage) or parallel (for higher capacity), offering scalable system design.
❄️ Optional Heating Module
For cold environments (below 0°C), an optional heating module can be integrated to warm the battery before charging, preventing low‑temperature damage.
🛡️ Comprehensive Protections
Over‑charge, over‑discharge, over‑current, short circuit, and over‑temperature protections ensure maximum safety and battery longevity.
📊 Technical Specifications
- Battery Chemistry: LiFePO₄ / Lithium‑ion (4S)
- Nominal Voltage: 12.8V (LiFePO₄) / 14.4V (Li‑ion)
- Continuous Discharge Current: 120A
- Charge Current: Configurable (up to 120A)
- Communication: Bluetooth (App) + UART (PC)
- Temperature Sensing: NTC thermal sensors (over‑temperature protection)
- Optional Display: LCD (SOC, voltage, current, temperature)
- Series/Parallel Connection: Supported
- Optional Heating Module: For low‑temperature environments
- Protections: Over‑charge, over‑discharge, over‑current, short circuit, over‑temperature
- Balancing: Passive balancing
- Applications: Solar storage, RV, marine, golf carts, power stations, industrial batteries
🔧 BMS Assembly & Safety Notices
- Qualified personnel only – BMS assembly requires expertise in electrical systems and control wiring.
- Compliance with regulations – ensure all local building codes and safety standards are met.
- System design & planning – define component locations, wiring, and integration with other systems (e.g., solar, inverter, HVAC).
- Documentation & labeling – maintain clear wiring diagrams and component labels for future troubleshooting.
- Wiring & connections – follow manufacturer guidelines; secure connections, use proper insulation, avoid loose strands.
- Power & grounding – use appropriate circuit breakers/fuses and proper grounding techniques.
- Testing & commissioning – thoroughly test continuity, sensor operation, and communication after assembly.
- Maintenance – schedule regular inspections, preventive tasks, and software updates; keep detailed records.
- Training & user support – provide user manuals and training for operators; offer ongoing assistance.
- Always consult the manufacturer’s specific documentation for each BMS component.
We offer OEM/ODM services – customize current ratings (up to 120A), heating modules, LCD options, and physical dimensions. Contact our engineering team for sample requests, technical documentation, and volume pricing.
Primary: 4S BMS · 12V BMS · 120A BMS · LiFePO₄ BMS · smart BMS · Bluetooth BMS · UART BMS · battery management system · over‑temperature protection · series parallel BMS · heating module · LCD SOC display
Performance: 120A continuous discharge · Bluetooth app monitoring · UART configuration · passive balancing · over‑charge protection · over‑discharge protection · over‑current protection · short circuit protection · optional heating · optional LCD
Applications: solar energy storage · RV battery · marine battery · golf cart · power station · 12V lithium battery · industrial backup · custom battery pack
