Product Name

8S-14S 30A Li-ion Battery Management System (BMS) Protection Board 24V-48V with Cell Balancing Function

Product Overview

The Maxkgo 8S-14S 30A Li-ion Battery Protection Board is designed for medium-voltage lithium-ion battery packs requiring reliable safety protection and battery management.

Supporting 8S, 10S, 12S, and 14S Li-ion battery configurations, this compact BMS provides comprehensive protection functions including overcharge protection, over-discharge protection, over-current protection, short-circuit protection, temperature protection, and cell balancing.

With a 30A continuous discharge capability, low power consumption, and compact PCB design, it is suitable for applications such as electric mobility systems, robotics, DIY battery packs, portable power solutions, and custom lithium battery projects.

Key Features

Wide Battery Configuration Support

Compatible with multiple Li-ion battery pack configurations:

• 8S Li-ion battery pack
• 10S Li-ion battery pack
• 12S Li-ion battery pack
• 14S Li-ion battery pack

Voltage range:

24V – 48V lithium battery systems

Charging voltage:

Number of battery cells × 4.2V

Comprehensive Battery Protection

The integrated BMS provides multiple layers of battery safety protection.

Overcharge Protection

Protects battery cells from excessive charging voltage.

Protection Parameters:

• Detection voltage:
  25 ± 0.025V
• Release voltage:
  15 ± 0.05V
• Detection delay:
  1000 ± 500ms

Over-Discharge Protection

Prevents battery cells from deep discharge damage.

Protection Parameters:

• Detection voltage:
  75 ± 0.1V
• Release voltage:
  0 ± 0.1V
• Detection delay:
  1000 ± 500ms

Over-Current Protection

Provides protection against excessive discharge current.

Parameters:

• Continuous discharge current:
  30A
• Current protection:
  50 ± 8A
• Detection voltage:
  50 ± 15mV
• Detection delay:
  1000 ± 500ms

Cell Balancing Function

Built-in balancing function helps maintain voltage consistency between battery cells and improves battery pack performance.

Balancing Parameters:

• Balance detection voltage:
  15 ± 0.025V
• Balance current:
  42 ± 5mA
• Detection delay:
  100 ± 50ms

Short Circuit Protection

Fast response protection against accidental external short circuits.

Parameters:

• Trigger condition:
  External short circuit
• Detection delay:
  300μs
• Recovery condition:
  Disconnect the load

Temperature Protection

Integrated temperature monitoring protects the battery system during charging and discharging.

Parameters:

• Over-temperature protection:
  55°C
• Recovery temperature:
  75°C
• Recovery condition:
  Normal operating temperature restored

Technical Specifications

Applications

This 8S-14S BMS protection board is suitable for:

• Electric skateboard battery systems
• E-bike battery packs
• Robotics platforms
• AGV/AMR battery applications
• DIY high-voltage lithium battery packs
• Portable power systems
• Custom Li-ion energy storage solutions
• RC and hobby battery projects

Product Advantages

Compact High-Voltage Battery Protection Solution

Small PCB footprint allows easy integration into limited installation spaces.

Multiple Safety Protection Functions

One board integrates:

✓ Overcharge protection
✓ Over-discharge protection
✓ Over-current protection
✓ Cell balancing
✓ Short circuit protection
✓ Temperature protection

Low Standby Power Consumption

• Working consumption:
  <35μA
• Sleep consumption:
  <10μA

Helps reduce unnecessary battery drain during standby operation.

Package Includes

• 1 × 8S-14S Li-ion BMS PCBA Protection Board
• 1 × HY2.0 Single-head 7P Cable
• 1 × HY2.0 Single-head 8P Cable