Product Description
LT-B0502 | 3S‑5S 12V 30A LiFePO₄ / Li‑ion BMS
NTC Thermal Sensors | Temperature Switch | Over‑Current/Voltage/Temperature Protection
The LT-B0502 Battery Management System (BMS) is a compact, high‑reliability solution designed for 3S to 5S lithium‑ion and LiFePO₄ battery packs (12V nominal). With a 30A continuous output current, integrated NTC thermal sensors, a temperature switch, and comprehensive protections (over‑current, over‑voltage, over‑temperature), it ensures safe and efficient operation for a wide range of applications — including solar energy storage, RV house batteries, marine systems, backup power, and portable devices.
⚙️ Key Features
🔋 Wide Battery Compatibility
Supports 3S, 4S, and 5S configurations for both Li‑ion (12V–18V) and LiFePO₄ (9.6V–16V) chemistries, making it versatile for many 12V applications.
⚡ 30A Maximum Continuous Current
30A continuous output capability supports high‑power 12V systems, including inverters, pumps, lighting, and other DC loads.
🌡️ NTC Thermal Sensors & Temperature Switch
Integrated NTC thermistors monitor battery temperature in real time. The temperature switch triggers protection when thresholds are exceeded, preventing overheating and thermal runaway.
🛡️ Comprehensive Protections
Over‑current protection (OCP) prevents excessive discharge/charge currents.
Over‑voltage protection (OVP) stops charging at unsafe voltage levels.
Over‑temperature protection (OTP) safeguards the pack from extreme heat.
🔌 Optimized for 12V Systems
Ideal for drop‑in replacement of lead‑acid batteries in solar storage, RVs, boats, UPS, and portable power stations.
📊 Technical Specifications
- Model: LT-B0502
- Cell Series Support: 3S – 5S (Li‑ion / LiFePO₄)
- Nominal Voltage: 12V (3S LiFePO₄), 12.6V–18V (Li‑ion)
- Maximum Continuous Output Current: 30A
- Temperature Sensing: NTC thermistors + temperature switch
- Protections: Over‑current (OCP), over‑voltage (OVP), over‑temperature (OTP)
- Balancing: Passive balancing (maintains cell voltage uniformity)
- Operating Temperature: -20°C to 70°C
- Applications: Solar storage, RV, marine, backup UPS, portable power, 12V lithium battery packs
🔋 Applications
☀️ Solar Energy Storage
Perfect for 12V LiFePO₄ battery banks in off‑grid and hybrid solar systems, providing reliable protection and temperature monitoring.
🚐 RV & Camper Van Power
Manage 12V lithium house batteries with confidence, ensuring safe charging/discharging and overheating prevention.
⚓ Marine & Boat Systems
Ideal for trolling motors, fish finders, and onboard electronics where temperature extremes are common.
🔌 Backup & UPS Systems
Suitable for small backup power units, medical devices, and telecommunications equipment requiring 30A current handling.
We offer OEM/ODM services for the LT-B0502 platform – customize current ratings (up to 30A), cell series (3S‑5S), and physical layout. Contact our engineering team for sample requests, technical documentation, and volume pricing.
Primary: 3S BMS · 4S BMS · 5S BMS · 12V BMS · 30A BMS · LiFePO₄ BMS · LT-B0502 · NTC sensor · temperature switch · over‑current protection · over‑voltage protection · lithium battery management
Performance: 30A continuous discharge · 3S‑5S support · passive balancing · over‑temperature protection · compact design · 12V lithium battery · 12V LiFePO₄ pack
Applications: solar energy storage · RV battery · marine battery · backup power · UPS · portable power station · 12V Li‑ion · 12V LiFePO₄
