21S 100A Lithium Battery Protection Board High Current BMS for E-bike ESS Customizable

BAKTH-021S100A-0019 is a high-performance 21S lithium battery protection board (BMS) designed for high current applications. It offers comprehensive safety protections including overcharge, over-discharge, overcurrent, short circuit, and temperature protection. Ideal for e-bikes, solar energy systems, and energy storage stations. Customization is supported.

Specifications

Key Features

• High current load capacity supports continuous 100A discharge, ideal for high-power applications such as electric bikes and energy storage.

• Built-in protections for over-voltage, under-voltage, short-circuit, over-current, and temperature to ensure safe battery operation.

• Supports active balancing function to extend battery pack life and improve consistency.

• Modular design for easy integration, suitable for various industrial and solar system applications.

Application Scenarios

• Energy Storage Systems (ESS)

• Electric Power Tools
• E-scooters, E-bikes, Electric Motorcycles
• Home Solar Battery Systems
• DIY Custom Li-ion Battery Packs

Competitive Advantages

• Authentic 21S support – full compatibility with 72V systems

• Stable 100A discharge with robust thermal design

• Smart communication protocol integration (CAN, UART)

• Fast customization: wiring, interface, size

• PC software for live monitoring and firmware updates

Warranty & Support

• 12-month warranty with lifetime technical support

• 100% tested before shipment to ensure safety and reliability

• Dedicated account manager and technical support with 48-hour response

Manufacturing & QC

• Automated SMT + DIP plug-in manufacturing process
• Multi-step electrical tests: short-circuit, current surge, thermal rise
• Each BMS undergoes over 8 hours of full-load burn-in test
• Anti-static packaging and secure logistics to ensure safe delivery

FAQ

Q: What battery types are supported?
A: Supports various lithium chemistries including NCM and LiFePO4. Custom configurations available.

Q: Is customization supported for series count or current?
A: Yes, supports 3S–36S and 10A–300A with optional communication modules like UART, RS485, or CAN.

Q: What warranty and after-sales support are provided?
A: 12-month warranty with lifetime tech support and return/exchange for quality issues.