Product Description
B1403 Classic Model BMS | 14S 52V 25A with NTC Balance for Electric Bicycles
Supports 7S‑14S Li‑ion / LiFePO₄ / Li‑polymer | Balancing & Temperature Sensing | Optional Shells
The B1403 Classic Model BMS is a versatile, high‑reliability Battery Management System designed for 7S to 14S lithium‑ion, LiFePO₄, and Li‑polymer battery packs, with a maximum configuration of 14S 52V 25A. Featuring a balance function, NTC temperature sensor, 25A continuous discharge capacity, and optional extra shells for enhanced protection, it delivers exceptional performance and safety. Ideal for electric bicycles, pedelecs, scooters, tricycles, and other electric vehicles.
📊 Key Features & Benefits
🔋 Versatile Battery Support
Compatible with 7S‑14S Li‑ion, LiFePO₄, and Li‑polymer batteries – provides flexibility for various chemistries and applications.
⚖️ Balance Function
Ensures optimal cell voltage balance, prolonging battery life and enhancing overall performance.
🌡️ NTC Temperature Sensing
Integrated NTC thermistor enables accurate temperature monitoring for effective thermal management and over‑temperature protection.
⚡ 25A Continuous Discharge
25A continuous current capability provides reliable power output for demanding e‑bike, scooter, and tricycle applications.
🛡️ Optional Extra Shells
Additional protective shells available for enhanced durability and physical protection, ensuring long‑term safety.
🔧 Wide Application Range
Trusted in electric bikes, pedelecs, scooters, tricycles, and other electric‑powered vehicles – a popular choice for transportation solutions.
📋 Technical Specifications
- Model: B1403 Classic BMS
- Cell Series Support: 7S – 14S (Li‑ion / LiFePO₄ / Li‑polymer)
- Maximum Configuration: 14S 52V
- Continuous Discharge Current: 25A
- Balance Function: Passive balancing (maintains cell voltage uniformity)
- Temperature Sensing: NTC thermistor (over‑temperature protection)
- Protections: Over‑charge, over‑discharge, over‑current, short circuit, over‑temperature
- Optional Accessories: Extra protective shells (for added durability)
- Applications: Electric bicycles, pedelecs, scooters, tricycles, light EVs
🚲 Applications
🚴 Electric Bicycles (E‑Bikes)
Perfect for 36V‑52V e‑bike battery packs, providing reliable balancing and temperature protection.
🛴 Pedelecs & Scooters
Ideal for 36V‑52V scooter batteries requiring compact BMS with balance function.
🛺 Electric Tricycles
Suitable for 48V‑52V packs in cargo or passenger electric tricycles.
🔋 Custom Battery Packs
Great for DIY builders seeking a classic, reliable BMS for 7S‑14S Li‑ion or LiFePO₄ projects.
📦 Important BMS Assembly Notices
- Qualified personnel only – BMS assembly requires expertise in electrical systems and control wiring.
- Compliance – ensure all local building codes, regulations, and safety standards are met.
- System design & planning – define component locations, wiring, and integration with other systems.
- Documentation & labeling – maintain clear wiring diagrams and component labels for future troubleshooting.
- Wiring & connections – follow manufacturer guidelines; secure all connections, insulate properly, avoid loose strands.
- Power & grounding – use appropriate circuit breakers/fuses and proper grounding techniques.
- Testing & commissioning – thoroughly test wiring continuity, sensor operation, and communication after assembly.
- Maintenance – schedule regular inspections, preventive tasks, and software updates; keep detailed records.
- Training & support – provide user manuals and training for operators; offer ongoing assistance.
- Always consult the manufacturer’s specific documentation for each BMS component.
If you require higher continuous discharge current, please refer to LT-B1407. For OEM/ODM customization of the B1403 platform (current ratings, cell series, protective shells), contact our engineering team for sample requests, technical documentation, and volume pricing.
Primary: 14S BMS · 52V BMS · 25A BMS · B1403 BMS · e‑bike BMS · Li‑ion BMS · LiFePO₄ BMS · NTC sensor · balancing function · electric bicycle battery management · pedelec BMS · scooter BMS
Performance: 25A continuous discharge · 7S‑14S support · passive balancing · over‑charge protection · over‑discharge protection · over‑current protection · short circuit protection · over‑temperature protection · optional extra shells
Applications: electric bicycle · pedelec · e‑scooter · electric tricycle · 52V lithium battery · custom battery pack
