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| Categories | BMS PCB PCM |
|---|---|
| Brand Name: | BAKTH/OEM/Neutral |
| Model Number: | BAKTH-021S100A-0019 |
| Certification: | CE / RoHS |
| Place of Origin: | Guangdong, China |
| MOQ: | 1-200PCS |
| Price: | USD10.00-USD15.00/PCS |
| Payment Terms: | ,T/T |
| Supply Ability: | Daily Delivery Capability: Approx. 1,800 units/day |
| Delivery Time: | 5-8 working days |
| Packaging Details: | Standard Export Packing |
| Battery Type: | Li-ion |
| Series Supported: | 21S (customizable from 3S to 24S) |
| Continuous Discharge Current (A): | 100A |
| Balancing Type: | Active Balancing / Passive Balancing (Optional) |
| Over charge detection voltage(Cell): | 4.250V±0.050V |
| Over Discharge Detection Voltage(Cell): | 2.750V±0.050V |
| Application: | Solar Energy Storage, E-bike, Power Tools, Inverter Packs |
| Dimensions: | Length 138 mm Width 88 mm Height 12 mm |
| Customization Available: | Yes |
| Warranty: | 12 months |
| Company Info. |
| Shenzhen BAK Technology Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
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.
Application Scenarios
Energy Storage Systems (ESS)
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
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
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.
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