Shenzhen BAK Technology Co., Ltd.
| 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 |
| Brand Name | BAKTH/OEM/Neutral |
| Model Number | BAKTH-021S100A-0019 |
| Certification | CE / RoHS |
| Place of Origin | Guangdong, China |
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Product Specification
| 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 |
| Brand Name | BAKTH/OEM/Neutral | Model Number | BAKTH-021S100A-0019 |
| Certification | CE / RoHS | Place of Origin | Guangdong, China |
| High Light | 100A Lithium Battery Protection Board ，E-bike ESS High Current BMS ，Customizable Lithium Battery Protection Board | ||
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.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2002
Total Annual:
15000000-20000000
Employee Number:
100~199
Ecer Certification：
Verified Supplier
Shenzhen BAK Technology Co., Ltd. founded in 2002, with more than 22 years experience in design and production of battery packs and PCB/BMS. BAKTH has its own R&D team, advance production & testing facilities. A fully automatic SMT line was introduced in 2021, further enhanced BAKTH producti... Shenzhen BAK Technology Co., Ltd. founded in 2002, with more than 22 years experience in design and production of battery packs and PCB/BMS. BAKTH has its own R&D team, advance production & testing facilities. A fully automatic SMT line was introduced in 2021, further enhanced BAKTH producti...
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