Description
BMS NMC 10-14S 20A SMART JBD (SP14S004) (7d41)
The BMS NMC 10–14S 20A Smart JBD (SP14S004) (7d41) is a versatile and compact Smart Battery Management System designed for 10S–14S (36V–52V nominal) lithium-ion or NMC battery packs. It features intelligent monitoring, active balancing, and multiple protection circuits, ensuring safe and reliable operation of your lithium battery pack.
Perfect for E-bikes, scooters, solar energy systems, UPS, and DIY battery projects, this JBD Smart BMS supports real-time data monitoring through UART / RS485 / optional Bluetooth connectivity. It provides professional-grade protection in a small, efficient package.
⚙️ Key Features
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✅ Supports 10S to 14S (36V–52V) lithium-ion / NMC battery configurations
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⚡ 20A continuous discharge current | Charge current: up to 10A
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🔋 Active cell balancing for even voltage distribution across cells
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🔒 Full protection system:
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Overcharge / Over-discharge
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Overcurrent / Short Circuit
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Temperature Protection
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Balance Function
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🧠 Smart communication: UART / RS485 / Bluetooth (optional)
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📲 Real-time data monitoring via mobile app or PC software
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🌡️ Operating temperature: -20°C ~ +70°C
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🔌 Compact, efficient MOSFET design for reduced heat and better performance
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💡 Lightweight and easy to install in compact battery packs
⚡ Applications
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Electric Bicycles (E-Bikes)
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Electric Scooters
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Portable Power Packs
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Solar Energy Storage Systems
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Backup Power (UPS)
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DIY Lithium Battery Packs
🌟 Why Choose JBD BMS (SP14S004) (7d41)?
The BMS NMC 10–14S 20A Smart JBD is a smart, reliable, and efficient BMS for small to medium lithium battery systems. Its lightweight and compact design, combined with intelligent protection and Bluetooth monitoring, makes it an excellent choice for modern battery management.
This BMS ensures each cell operates within safe limits, enhancing battery life and performance — a perfect balance between performance, safety, and affordability.
📦 Package Includes
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1 × JBD Smart BMS (SP14S004) (7d41)
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1 × Balance Wire Harness
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Optional Bluetooth / RS485 Module
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Wiring Diagram / User Manual
⚠️ Installation Notes
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Verify your battery configuration (10S–14S) before connecting.
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Follow the correct wiring sequence to prevent short circuits.
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Ensure proper ventilation during operation.
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Bluetooth / RS485 modules sold separately.





