BMS 4S 10A 14.8V NMC Protection Module | Pro Tronix

Product Description

The 4S 10A Li-ion Battery Protection BMS Module is a high-reliability protection circuit designed specifically for 4-series lithium-ion and NMC (Nickel Manganese Cobalt) cell configurations (14.8V nominal / 16.8V full charge). Specially calibrated for 3.7V nominal cells, this module provides comprehensive protection against overcharge, over-discharge, over-current, and output short circuits, preserving cell capacity and extending overall battery pack lifespan.

Featuring low internal resistance MOSFETs and precision voltage sensing ICs, it delivers up to 10A continuous discharge current. This makes it an essential safety component for 14.8V/16.8V battery builds powering portable audio systems, power tools, custom robotics, and DIY power banks.

⚠️ Wiring & Safety Tip: Wire your cells strictly in sequence: B- (0V ground), B1 (3.7V tap), B2 (7.4V tap), B3 (11.1V tap), and B+ (14.8V/16.8V positive). Always check that all 4 individual NMC cells are balanced in voltage before assembling them into a series pack.

Technical & Architectural Highlights

• Calibrated for 3.7V NMC / Li-ion Chemistry: Optimized voltage thresholds specifically tuned for standard 3.7V nominal / 4.2V max NMC cells.

• Full Multi-Protection Safety Suite: Built-in safeguards against overcharging, deep discharge, continuous over-current, and short circuits.

• 10A Continuous Output Capability: Handles continuous discharge currents up to 10A smoothly with minimal heating.

• Ultra-Compact Footprint: Small PCB size allows clean integration inside 3D-printed enclosures and cylindrical battery holders.

🧰 Recommended Batteries & Power Accessories

Completing your custom 4S NMC battery pack or power project? Add these matching batteries and power management essentials to your order:

1. Lithium Battery Protection Boards (BMS): Explore various voltage configurations and current ratings for custom pack assembly: Pro Tronix BMS Modules Collection

2. 18650 & Cylindrical Lithium-Ion Batteries: High-capacity rechargeable cells ideal for building custom 4S power packs and battery banks: Pro Tronix Lithium Batteries Collection

3. Lithium Polymer (LiPo) Batteries: Compact single and multi-cell LiPo packs for lightweight portable electronics: Pro Tronix LiPo Batteries Collection

4. 1S – 2S Lithium Battery Charger Modules: Dedicated charging boards and step-up/down power modules for lithium chemistry: Pro Tronix Lithium Charger Collection

5. Battery Holders & Connectors: Secure 18650 battery holders, nickel strips, and wire leads for clean pack assembly: Pro Tronix Battery Holders Collection

Technical Specifications

Applications

• DIY 4S NMC Battery Packs: Building custom 14.8V / 16.8V power packs using 18650/21700 NMC cells.

• Portable Audio & Bluetooth Speakers: Safe power supply management for high-power 12V–16V amplifier boards.

• Robotics & RC Equipment: Reliable battery protection for field robotics, drones, and DC motor drivers.

What’s in the Box

• 1 x BMS 4S 10A 14.8V/16.8V Li-ion NMC Battery Protection Module.

All your electronics components and prototyping accessories are available with fast shipping across Egypt from Pro Tronix!