DALY 100BAL SMART BMS 4-8S 40A

The DALY BMS 4-8S 40A 100BALANCE is an advanced Smart Active Balance Battery Management System designed to support 4S to 8S lithium-ion or LiFePO4 battery packs. With a 40A continuous discharge current and smart balancing technology, it’s ideal for e-bikes, powerwalls, energy storage systems, robotics, and other compact but performance-driven battery applications.

Key Features

• Smart Active Cell Balancing

The BMS intelligently transfers charge from high-voltage cells to lower-voltage ones, ensuring optimal balance and extended battery life.

• Wide Compatibility (4S–8S)

Designed to manage between 4 and 8 battery cells in series, making it versatile for many DIY and commercial battery setups.

• High-Precision Protection

Built-in protection against overcharge, over-discharge, short circuit, over-current, and thermal overload.

• Compact & Durable Design

Engineered with a blue anodized aluminum enclosure for durability, effective heat dissipation, and space efficiency.

• UART & CAN Smart Monitoring

Easily connect the BMS to an external monitor, data logger, or control system to view real-time battery diagnostics.

Applications

• Electric Bicycles & Scooters
• Home Energy Storage Systems (ESS)
• Battery Pack Development (DIY/Commercial)
• Portable Power Stations
• Off-Grid Solar Setups

Due to the battery capacity, internal resistance, voltage and other parameter values are not completely consistent, this difference causes the battery with the minimum capacity to be easily overcharged and discharged during charging, and the smallest battery capacity becomes smaller after damage, entering a vicious cycle. The performance of single cell directly affects the charge and discharge characteristics of the whole battery and the deduction of battery capacity. BMS lack of balance function is only a data collector, which is hardly a management system. The active equalization function can realize the maximum continuous 1A equalization current. Transferthe high-energy single cell to the low-energy cell, or use the whole group of energy to supplement the lowest single cell. During the implementation process, the energy is redistributed through the energy storage link, so as to ensure the battery consistency to the greatest extent, improve the battery mileage and extend the battery life.