21S 100A Lithium Battery Protection Board High Current BMS for E-bike ESS Customizable
Brand Name:BAKTH/OEM/Neutral
Certification:CE / RoHS
Model Number:BAKTH-021S100A-0019
Minimum Order Quantity:1-200PCS
Delivery Time:5-8 working days
Payment Terms:,T/T
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Verified Supplier
Location:
Shenzhen Guangdong China
Address:
RM 2201, Longshenghengbo Center, Jianshe East Road and Bulong Road Intersection, Longhua District, Shenzhen, Guangdong, China
Supplier`s last login times:
within 22 hours
Product Details
Company Profile
Product Details
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
| Battery Type | Li-ion | Continuous Discharge Current | 100A |
| Over charge detection voltage(Cell) | 4.250V±0.050V | Dimensions | Length 138 mm Width 88 mm Height 12 mm |
| Over Discharge Detection Voltage(Cell) | 2.750V±0.050V | Compliant certification standards | IEC62133 |
| Over Current Discharge | 135A±20A | Type of Protective Board | 20S lithium battery protection board |
Over Current Charge | 40A±10A | Protection | OV, UV, OC, SC, OT, Balance |
| Discharging Temperature | -20~70℃ |
| -0~65℃ |
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.
21S 100A Lithium Battery Protection Board High Current BMS for E-bike ESS Customizable
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