HX-4S-F100A 4S 14.8V 100A Li-ion Battery Protection Board BMS

The HX-4S-F100A 4S 14.8V 100A Li-ion Battery Protection Board (BMS) is a high-performance, heavy-duty battery management system designed to monitor and protect 4-cell Lithium-ion or Lithium Polymer battery packs. Operating at a nominal voltage of 14.8V (16.8V fully charged), this BMS is engineered to handle massive continuous discharge currents of up to 100A. It features an integrated passive cell balancing circuit that ensures each cell in the pack is charged equally, significantly extending the overall cycle life and performance of your custom battery packs.

This battery protection board is highly recommended for high-power DIY projects, including electric vehicles (E-bikes, electric scooters), high-capacity solar energy storage systems, heavy-duty power tools, and custom robotics. It utilizes a split-port (separate port) design for charging and discharging, which optimizes thermal management and enhances safety. Equipped with a robust aluminum casing that acts as a highly efficient heatsink, the board remains cool even under demanding loads. It is fully compatible with standard 3.7V nominal cells like 18650, 21700, and Li-Po pouch cells, making it a versatile choice for engineers and makers alike.

Features:

• High Current Capacity: Supports up to 100A continuous discharge current, ideal for high-power motor drives and inverters.
• Integrated Cell Balancing: Onboard passive balancing circuitry ensures uniform cell voltages during charging.
• Comprehensive Protection: Built-in safeguards against overcharging, over-discharging, overcurrent, and short circuits.
• Split-Port Design: Separate charge (C-) and discharge (P-) connections for safer operation and better thermal efficiency.
• Heavy-Duty Heat Dissipation: Features a thick aluminum plate heatsink to prevent overheating under heavy loads.
• Easy Interfacing: Comes with a high-quality 5-pin JST-XH balance wire harness for quick and secure cell connection.

Package Includes:

1 x HX-4S-F100A 4S 14.8V 100A Li-ion BMS Board

1 x 5-Pin JST-XH Balance Cable