BMS 4-8S 40A 100BALANCE (R24TK1A) (7635)

DALY Smart Active Balance BMS 4-8S 40A 100BALANCE (R24TK1A)

Product Data Sheet

The DALY BMS 4-8S 40A 100BALANCE (R24TK1A) 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.

Technical Specifications

• Product Name: Smart Active Balance BMS
• Model Number: R24TK
• Cell sampling voltage range: 1.5V-4.9V
• Operating voltage range: >10V
• Balance method: Active Balance
• Working power consumption: ≤1.25W
• working temperature -40°C~85°C
  Unlike traditional BMS systems that only rely on passive balancing, the 100Balance active technology optimizes the charge distribution between cells—enhancing battery lifespan, performance, and thermal safety.

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.